2011/02/24 areva epr dc - draft response to u.s. epr design … · 2012-12-04 · areva np inc....
TRANSCRIPT
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ArevaEPRDCPEm Resource
From: WELLS Russell (AREVA) [[email protected]]Sent: Thursday, February 24, 2011 5:53 PMTo: Tesfaye, GetachewCc: DELANO Karen (AREVA); ROMINE Judy (AREVA); BRYAN Martin (EXTERNAL AREVA);
GUCWA Len (EXTERNAL AREVA); HALLINGER Pat (EXTERNAL AREVA); BALLARD Bob (AREVA); RANSOM James (AREVA); BROWNSON Doug (AREVA)
Subject: DRAFT Response to U.S. EPR Design Certification Application RAI No. 434, FSAR Ch. 6, Questions 06.02.02-69, 06.02.02-71, 06.02.02-72, 06.02.02-73, 06.02.02-74, 06.02.02-76, 06.02.02-78, 06.02.02-79
Attachments: Draft RAI 434 Supplement 2 Response US EPR DC.pdf
Getachew, Attached is a draft response for RAI No. 434, FSAR Ch 6, Questions 06.02.02-69, 06.02.02-71, 06.02.02-72, 06.02.02-73, 06.02.02-74, 06.02.02-76, 06.02.02-78, 06.02.02-79 as shown below in advance of the final response dates shown below. Let me know if the staff has questions or if this can be sent as a final response. Thanks, Russ Wells U.S. EPR Design Certification Licensing Manager AREVA NP, Inc. 3315 Old Forest Road, P.O. Box 10935 Mail Stop OF‐57 Lynchburg, VA 24506‐0935 Phone: 434‐832‐3884 (work) 434‐942‐6375 (cell) Fax: 434‐382‐3884 [email protected]
From: WELLS Russell (RS/NB) Sent: Thursday, February 24, 2011 5:11 PM To: 'Tesfaye, Getachew' Cc: DELANO Karen (RS/NB); BENNETT Kathy (RS/NB); ROMINE Judy (RS/NB); BRYAN Martin (External RS/NB); GUCWA Len (External RS/NB) Subject: Response to U.S. EPR Design Certification Application RAI No. 434, FSAR Ch. 6, Supplement 2 Getachew, AREVA NP Inc. (AREVA NP) provided a schedule for a technically correct and complete response to RAI 434 on November 15, 2010. AREVA NP submitted Supplement 1 to the response on January 26, 2011 to provide a revised response schedule. To provide an opportunity for additional interaction with the NRC staff, AREVA NP is providing a revised schedule for responding to Questions 06.02.02-70, 06.02.02-75 and 06.02.02-77. The schedule for the remaining questions is unchanged. The schedule for a technically correct and complete response to these questions is provided below. Question # Response Date
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RAI 434 — 06.02.02-69 March 16, 2011 RAI 434 — 06.02.02-70 March 31, 2011 RAI 434 — 06.02.02-71 March 25, 2011 RAI 434 — 06.02.02-72 March 25, 2011 RAI 434 — 06.02.02-73 March 16, 2011 RAI 434 — 06.02.02-74 March 16, 2011 RAI 434 — 06.02.02-75 March 31, 2011 RAI 434 — 06.02.02-76 March 16, 2011 RAI 434 — 06.02.02-77 March 31, 2011 RAI 434 — 06.02.02-78 March 16, 2011 RAI 434 — 06.02.02-79 March 16, 2011 Sincerely, Russ Wells U.S. EPR Design Certification Licensing Manager AREVA NP, Inc. 3315 Old Forest Road, P.O. Box 10935 Mail Stop OF‐57 Lynchburg, VA 24506‐0935 Phone: 434‐832‐3884 (work) 434‐942‐6375 (cell) Fax: 434‐382‐3884 [email protected]
From: BRYAN Martin (External RS/NB) Sent: Wednesday, January 26, 2011 12:16 PM To: 'Tesfaye, Getachew' Cc: DELANO Karen (RS/NB); ROMINE Judy (RS/NB); BENNETT Kathy (RS/NB); GUCWA Len (External RS/NB) Subject: Response to U.S. EPR Design Certification Application RAI No. 434, FSAR Ch. 6, Supplement 1
Getachew, AREVA NP Inc. provided a schedule for technically correct and complete responses to the 11 questions in RAI No. 434 on November 15, 2010. To allow additional time to finalize the responses and interact with the NRC, a revised schedule is provided. The schedule for providing a complete response to the remaining questions has been revised as indicated below. Question # Response Date RAI 434 — 06.02.02-69 March 16, 2011 RAI 434 — 06.02.02-70 March 16, 2011 RAI 434 — 06.02.02-71 March 25, 2011 RAI 434 — 06.02.02-72 March 25, 2011 RAI 434 — 06.02.02-73 March 16, 2011 RAI 434 — 06.02.02-74 March 16, 2011 RAI 434 — 06.02.02-75 March 16, 2011 RAI 434 — 06.02.02-76 March 16, 2011 RAI 434 — 06.02.02-77 March 25, 2011
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RAI 434 — 06.02.02-78 March 16, 2011 RAI 434 — 06.02.02-79 March 16, 2011 Sincerely, Martin (Marty) C. Bryan U.S. EPR Design Certification Licensing Manager AREVA NP Inc. Tel: (434) 832-3016 702 561-3528 cell [email protected]
From: BRYAN Martin (External RS/NB) Sent: Monday, November 15, 2010 4:58 PM To: 'Tesfaye, Getachew' Cc: DELANO Karen (RS/NB); ROMINE Judy (RS/NB); BENNETT Kathy (RS/NB); GUCWA Len (External RS/NB); 'Miernicki, Michael' Subject: Response to U.S. EPR Design Certification Application RAI No. 434, FSAR Ch. 6
Getachew, Attached please find AREVA NP Inc.’s response to the subject request for additional information (RAI). The attached file, “RAI 434 Response US EPR DC.pdf,” provides a schedule since a technically correct and complete response to the 11 questions is not provided. The following table indicates the respective pages in the response document, “RAI 434 Response US EPR DC.pdf,” that contain AREVA NP’s response to the subject questions.
Question # Start Page End Page RAI 434 — 06.02.02-69 2 2 RAI 434 — 06.02.02-70 3 3 RAI 434 — 06.02.02-71 4 5 RAI 434 — 06.02.02-72 6 6 RAI 434 — 06.02.02-73 7 7 RAI 434 — 06.02.02-74 8 8 RAI 434 — 06.02.02-75 9 9 RAI 434 — 06.02.02-76 10 10 RAI 434 — 06.02.02-77 11 11 RAI 434 — 06.02.02-78 12 12 RAI 434 — 06.02.02-79 13 13 A complete answer is not provided for 11 of the 11 questions. The schedule for a technically correct and complete response to these questions is provided below. Question # Response DateRAI 434 — 06.02.02-69 January 26, 2011 RAI 434 — 06.02.02-70 January 26, 2011 RAI 434 — 06.02.02-71 January 26, 2011 RAI 434 — 06.02.02-72 January 26, 2011
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RAI 434 — 06.02.02-73 January 26, 2011 RAI 434 — 06.02.02-74 January 26, 2011 RAI 434 — 06.02.02-75 January 26, 2011 RAI 434 — 06.02.02-76 January 26, 2011 RAI 434 — 06.02.02-77 January 26, 2011 RAI 434 — 06.02.02-78 January 26, 2011 RAI 434 — 06.02.02-79 January 26, 2011 Sincerely, Martin (Marty) C. Bryan U.S. EPR Design Certification Licensing Manager AREVA NP Inc. Tel: (434) 832-3016 702 561-3528 cell [email protected]
From: Tesfaye, Getachew [mailto:[email protected]] Sent: Friday, October 15, 2010 11:11 AM To: ZZ-DL-A-USEPR-DL Cc: Ashley, Clinton; Jackson, Christopher; McKirgan, John; Carneal, Jason; Colaccino, Joseph; ArevaEPRDCPEm ResourceSubject: U.S. EPR Design Certification Application RAI No. 434 (4897), FSAR Ch. 6
Attached please find the subject requests for additional information (RAI). A draft of the RAI was provided to you on August 6, 2010, and discussed with your staff on September 24, 2010. No changes were made to the draft RAI as a result of that discussion. The schedule we have established for review of your application assumes technically correct and complete responses within 30 days of receipt of RAIs. For any RAIs that cannot be answered within 30 days, it is expected that a date for receipt of this information will be provided to the staff within the 30 day period so that the staff can assess how this information will impact the published schedule.
Thanks, Getachew Tesfaye Sr. Project Manager NRO/DNRL/NARP (301) 415-3361
Hearing Identifier: AREVA_EPR_DC_RAIs Email Number: 2588 Mail Envelope Properties (1F1CC1BBDC66B842A46CAC03D6B1CD4104049A9C) Subject: DRAFT Response to U.S. EPR Design Certification Application RAI No. 434, FSAR Ch. 6, Questions 06.02.02-69, 06.02.02-71, 06.02.02-72, 06.02.02-73, 06.02.02-74, 06.02.02-76, 06.02.02-78, 06.02.02-79 Sent Date: 2/24/2011 5:53:13 PM Received Date: 2/24/2011 5:53:17 PM From: WELLS Russell (AREVA) Created By: [email protected] Recipients: "DELANO Karen (AREVA)" <[email protected]> Tracking Status: None "ROMINE Judy (AREVA)" <[email protected]> Tracking Status: None "BRYAN Martin (EXTERNAL AREVA)" <[email protected]> Tracking Status: None "GUCWA Len (EXTERNAL AREVA)" <[email protected]> Tracking Status: None "HALLINGER Pat (EXTERNAL AREVA)" <[email protected]> Tracking Status: None "BALLARD Bob (AREVA)" <[email protected]> Tracking Status: None "RANSOM James (AREVA)" <[email protected]> Tracking Status: None "BROWNSON Doug (AREVA)" <[email protected]> Tracking Status: None "Tesfaye, Getachew" <[email protected]> Tracking Status: None Post Office: AUSLYNCMX02.adom.ad.corp Files Size Date & Time MESSAGE 7388 2/24/2011 5:53:17 PM Draft RAI 434 Supplement 2 Response US EPR DC.pdf 438702 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:
Response to
Request for Additional Information No. 434(4897), Supplement 2, Revision 0
10/15/2010
U.S. EPR Standard Design Certification AREVA NP Inc.
Docket No. 52-020 SRP Section: 06.02.02 - Containment Heat Removal Systems
Application Section: 6.3
QUESTIONS for Containment and Ventilation Branch 1 (AP1000/EPR Projects) (SPCV)
DRAFT
nch 1 (APnch
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 2 of 40
Question 06.02.02-69:
Follow-Up to RAI 310, Question 06.03-14 and RAI 363, Question 06.02.02-43:
US EPR FSAR Tier 2, Section 6.3.3.3 “NPSH Evaluation” states the SIS pump NPSH evaluation for LBLOCA events is performed using the maximum pump flow head-capacity curves. The response to RAI 310, Question 06.03-14, indicates the design basis maximum flow through one sump is 3447 gpm (MHSI and LHSI combined flow). In the response to RAI 363, Question 06.02.02-43, the flow through the sump used for strainer qualification is 3284 gpm. It appears that strainer qualification flow does not bound the design basis maximum flow. Therefore, provide a detailed discussion of AREVA's approach to selecting the plant ECCS flow rate used for strainer qualification and justify the described approach.
Response to Question 06.02.02-69:
The U.S. EPR safety injection system (SIS) design basis maximum flow rate of 3447 gpm (combined medium head safety injection (MHSI) and low head safety injection (LHSI) flow through one sump) is based on the following conservative assumptions:
• Increased pump performance.
• Reduced pipe friction (i.e., decreased pressure drops).
• No debris loss across strainers.
The strainer qualification test procedure was revised to reflect the higher flow rate of 3447 gpm.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFTmaximum flow ramaximum
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 3 of 40
Question 06.02.02-71:
Follow-up to RAI 363, Question 06.02.02-43 item 11:
Analysis of the most challenging postulated accident with regard to sump performance during long-term core cooling involves selection of the most limiting pipe break size, location, and debris combination within containment. RG 1.82 position C.1.3.2.3 states that a sufficient number of breaks in each high pressure system that relies on recirculation should be considered. The NEI 04-07 GR states that the objective of the break selection process is to identify the break size and location which results in debris generation that produces the maximum head loss across the sump screen.
For the US EPR, ANP-10293 indicates there are two main paths for debris to enter the IRWST and potentially transport to the sump strainer. The two main paths for debris to enter the IRWST are from the heavy floor and the annular floor. The flow from these floors is filtered by debris interceptors called retaining baskets. Flow from the heavy floor to the IRWST is filtered by a large basket. Flow from the annular floor to the IRWST is filtered by a small basket.
The retaining basket performance is critical for analyzing and measuring strainer performance because the basket is designed to capture debris and keep it from reaching the strainer. However, the basket can overflow and as a result, debris can bypass the retaining basket and transport to the strainer. Therefore, in order to assess what causes the maximum head loss across the sump screen, a complete understanding of basket performance is necessary. Since the maximum head loss for US EPR is determined by testing, it is important to evaluate the performance of each debris flow path to the IRWST and their associated debris interceptors (retaining baskets).
AREVA's analysis and testing approach to date has focused on the large retaining basket. In RAI 363, Question 06.02.02-43 item 11, AREVA was asked how the small compartment retaining basket was bounded by testing for the large compartment retaining basket. In a June 17, 2010, phone call discussing this question and AREVAs response, AREVA indicated that the small compartment retaining basket no longer receives water from the annular floor due to a design change that redirected pressurizer room break flow from the annular floor to the heavy floor. It was also mentioned that the annular floor will only receive water from condensation and it will not fill up and spill into the small compartment basket located in the IRWST. Because this information is not be docketed and has not been fully explained , the staff requests AREVA to document the assessment of whether pipe breaks (consistent with RG 1.82 and NEI 04-07 guidance) can deliver water and/or debris to the annular floor. Provide a listing of potential systems that were considered and why they can or cannot deliver water to the annular region. If they can, then assess the impact on small basket performance and strainer head loss (debris generation, debris transport, and debris accumulation). As part of the discussion clearly define the purpose of the small retaining basket and document this discussion in ANP-10293.
In addition, the staff request that AREVA provide a complete assessment of the annular floor region and its water hold-up capacity in response to a design basis accident that requires recirculation. Include in the discussion the annular region water sources (pipe break, condensation), how high the water level can rise in the annular region, what limits the height of the water level in the annular region, identify any compartment(s) into which the water from the annular region spills, and describe any components (dampers, valves) that need to actuate/function/operate in order to allow the annular region to spill into another compartment
DRAFT
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 4 of 40
(e.g. IRWST). If condensation is the sole source of water collecting in the annular region, describe the method and approach used to assess the amount of condensate that could collect in the annular region.
Response to Question 06.02.02-71:
For a large break loss of coolant accident (LBLOCA), the annular space will receive water from condensation that spills into the small compartment of the double compartment retaining basket and into the single compartment retaining basket. The U.S. EPR design has two double compartment retaining baskets and two single compartment retaining baskets located in the IRWST. The small compartment is no longer used for fibrous material collection, except from latent debris.
Water entering the annular region will spill into the IRWST via seven openings. The openings are not controlled by any components and will begin spilling water into the IRWST when the level in the annular region rises above the four inch high weirs of the openings. The height of retained water in the annular region will be four inches plus a dynamic head height, which will vary depending on the flow of condensation into the annular region. Another factor which increases the dynamic head height is the width of the weir; a smaller width yields a larger dynamic head height. The total width of the openings is approximately 25 ft 7in; however, in the water retention analysis a conservative value of 20 ft is used.
In the long term, the primary water source in the annular region is condensation. However, during the blowdown phase of the LBLOCA there may be sufficient pressure difference between the equipment space and the service space to force water from the IRWST to the annular area. The exact amount of water displaced from the IRWST is dependent on a number of interrelated factors for each break scenario. Therefore, a bounding scenario that would allow the annular area to be filled up to the weir height by liquid from the IRWST in the first 18 seconds is applied.
The amount of condensation spilling into the annular region is determined by calculating a ratio of the surface areas for all compartments that spill condensate into the annular region and comparing the total internal surface area of the Reactor Building. This ratio is then applied to the total condensation rate of the Reactor Building. The total condensation rate is determined by using the total amount of energy absorbed by all of the heat structures in the GOTHIC multi-node model and the latent heat of vaporization at containment pressure saturated conditions. This method conservatively assumes that all energy absorbed by a heat structure relates to the condensing of steam and that the condensation rate is proportionally distributed in the Reactor Building based on the amount of surface area. A list of rooms that are assumed to spill condensate into the annular region is provided in Table 06.02.02-71-1.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFT
seven sevenwater into twate
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 5 of 40
Table 06.02.02-71-1—Rooms that Drain Condensate into Annular Region
Room Description Surface Area
(ft²) % of Total
SA UJA07013 Access Area 4214.29 1.00
UJA07014 Area for JND, JNG & JMQ (MHSI, LHSI, SAHRS) Pipe Penetrations 6858.78 1.62
UJA07015 Area for JND, JNG & JMQ (MHSI, LHSI, SAHRS) Pipe Penetrations 6986.92 1.65
UJA07016 Area for Hot Pipe Penetrations from UFA 7520.54 1.78 UJA07018 LCQ (SGBS) HX Room 3648.70 0.86 UJA11013 Loop 1 Annular Area 180-270 Deg 5601.81 1.33 UJA11014 Loop 2 Annular Area 270-0 Deg 3928.62 0.93 UJA11015 Loop 3 Annular Area 0-90 Deg 4287.86 1.02 UJA11016 Loop 4 Annular Area 90-180 Deg 5702.91 1.35 UJA11020 Access to Personnel Airlock 3778.52 0.89 UJA11021 FAL (FPPS) Valve Room 839.27 0.2 UJA11025 JND & JNG (MHSI & LHSI) Valve 1 Room 1210.21 0.29 UJA11026 JND & JNG (MHSI & LHSI) Valve 2 Room 1060.47 0.25 UJA11027 JND & JNG (MHSI & LHSI) Valve 3 Room 1060.47 0.25 UJA11028 JND & JNG (MHSI & LHSI) Valve 4 Room 1210.21 0.29 UJA11031 Access to Loop 1 & 2 Area 654.45 0.15 UJA11032 Access to Loop 3 & 4 Area 654.45 0.15 UJA15013 JNG13 (LHSI) Tank & Loop 1 Annular Area 3782.21 0.9 UJA15014 JNG23 (LHSI) Tank & Loop 2 Annular Area 4482.89 1.06 UJA15015 JNG33 (LHSI) Tank & Loop 3 Annular Area 4759.5 1.13 UJA15016 JNG43 (LHSI) Tank & Loop 4 Annular Area 4420.76 1.05 UJA15020 Access to Transfer Tube Compartment 1232.47 0.29 UJA15021 Transfer Tube Compartment 1087.95 0.26 UJA15023 Instrumentation Lances Storage Room 654.73 0.15 UJA15025 FAL (FPPS) Room 881.07 0.21 UJA18013 JNG13 (LHSI) Tank & Loop 1 Annular Area 3762.42 0.89 UJA18014 JNG23 (LHSI) Tank & Loop 2 Annular Area 4493.34 1.06 UJA18015 JNG33 (LHSI) Tank & Loop 3 Annular Area 4202.81 0.99 UJA18016 JNG43 (LHSI) Tank & Loop 4 Annular Area 3829.62 0.91 UJA23013 JNG13 (LHSI) Tank & Loop 1 Annular Area 5286.01 1.25 UJA23014 JNG23 (LHSI) Tank & Loop 2 Annular Area 5670.3 1.34 UJA23015 JNG33 (LHSI) Tank & Loop 3 Annular Area 5495.17 1.3 UJA23016 JNG43 (LHSI) Tank & Loop 4 Annular Area 5461.96 1.29 UJA23042 Instrumentation Measuring Cabinets Room 1786.31 0.42 UJA29013 Setdown Area, Operating floor 8444.62 2 UJA29014 Annular Area, 240-0 Deg 7751.37 1.83 UJA29015 Annular Area, 0-120 Deg 5728.13 1.36 UJA29016 Access to Equipment Hatch 6205.06 1.47 UJA29018 Access to Operating Floor 2476.75 0.59
UJA29022 KLA51/52 Compressor & KLA50 Filter (CBVS) Room 2822.09 0.67
UJA29023 Access to Emergency Airlock 2618.05 0.62
DHSI) Tank HSI) Tank DRAFTTT
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FTFTFTFT2 Room Roo 11FTFTFTFTe 3 Room Room FTFTFTFTalve 4 Room alve 4 Room
AFFFFAFea AF& Loop 1 Annular Area Loop 1 Annular Area
RAk & Loop 2 Annular Arek & Loop 2 Annu
RAank & Loop 3 Annular Aank & Loop 3 AnnulaRA) Tank & Loop 4 AnnulaTank & Loop 4 AnnulaRATransfer Tube Comparter Tube CompartRr Tube Compartment r Tube Compartm
DRumentation Lances Storaumentation Lances StoDR(FPPS) Room (FPPS) Room DR(LHSI) Tank & L(LHSI) Tank &DDI) TaI) TaDD
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 6 of 40
UJA34014 Annular Area, 240-0 Deg 6170.05 1.46 UJA34015 Annular Area, 0-120 Deg 8078.52 1.91 UJA34018 RPV Closure Head Storage Area 2136.58 0.51 UJA34022 JEG (RPS) Valve Room 1418.31 0.34 UJA40001 Dome 41306.5 9.78
Total 215664.01 51.05
Note: “Percent of total surface area (SA)” considers the total surface area for those structures inside reactor containment.
DRAFT
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 7 of 40
Question 06.02.02-72:
Follow-up to RAI 111, Question 06.02.02-8, and RAI 233, Question 06.02.02-29 Regarding Upstream Effects and water hold-up:
Upstream effects and water holdup is an important aspect of Generic Safety Issue (GSI) 191 and NEI 04-07, especially where curbs or weirs or flooding berms are used to hold up debris and water. In RAI 111, Question 06.02.02-8 responses, AREVA provides a discussion of the US EPR upstream effects and provides water hold-up information in the Supplement 4 response to RAI 233, Question 06.02.02-29. This information is an important design detail to support resolution of GSI-191 upstream effects and water hold-up. However, minimal upstream effects and water hold information is provided in the FSAR. In addition, ANP 10293 Rev 1, “US EPR Design Features to Address GSI-191”, assesses the US EPR design with respect to NEI 04-07 and RG 1.82 but provides a limited discussion on upstream effects and water holdup. The staff requests that AREVA document their upstream effects and water hold-up evaluation in ANP-10293 or the FSAR and include a summary of design information such as a table listing hold-up volumes and their location (floors, steam, condensate, trapped in compartments etc.).
Response to Question 06.02.02-72:
The mass of water holdup in the Reactor Building is examined during various phases of the transient: blowdown, refill/reflood, post reflood, peak containment pressure, peak IRWST temperature, and half peak containment pressure. There are several different categories analyzed for water holdup: condensate on walls and ceilings, water retained in steam and droplet phase within the containment atmosphere, and water retained on floors.
The tables below are based on condensation being the only source of water in the annular area. During blowdown there may be sufficient pressure difference between the equipment space and the service space to force water from the IRWST into the annular area. The exact amount of IRWST water that could be displaced is dependent on a number of interrelated factors for each break scenario. Therefore in the water retention analysis a worst case evaluation was made assuming that the annular area would instantly fill to the height of the weir with IRWST liquid. The total retained mass values only changed during the first three analyzed times as the annular area is already filled to the weirs in the remaining times. The results showed that the water hold up was still within the margin of allowable IRWST inventory for NPSH. The most limiting case in terms of NPSH was still at one hour.
Table 06.02.02-72-1 lists the wall condensation film thickness during each phase. The mass of condensation on walls in each compartment is listed in Table 06.02.02-72-2.
Table 06.02.02-72-3 lists the volume of condensation drops on ceilings per square foot. The mass of condensation on the ceiling of each compartment during each phase is listed in Table 06.02.02-72-4.
Table 06.02.02-72-5 lists the mass of water retained during the steam and droplet phase in the containment atmosphere. Table 06.02.02-72-6 lists the depths of flooding level within the lower annular region during the different phases. Table 06.02.02-72-7 lists the depths of flooding level on the heavy floor at the different phases. Table 06.02.02-72-8 lists the flooding depths of the compartments which will
DRAFT
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 8 of 40
flood due to curbs/doors. Table 06.02.02-72-9 lists the mass of water retained on floors in the annular region, heavy floor, and behind doors/curbs in other compartments.
The mass of retained water re-injected into the reactor coolant system (RCS) is calculated using the maximum flow of safety injection pumps in the beginning of the transient. After the end of reflood, the mass of retained water re-injected into the RCS is calculated based on the RCS volumes. The values of the mass of retained water re-injected into the RCS for each phase are listed in Table 06.02.02-79-10.
In the water retention analysis, it is assumed that one of the double compartment retaining baskets becomes clogged and is completely filled with water. Based on the volume of the retention compartments above the IRWST level, the retained mass for the clogged basket is 68,064 lbm. This mass is conservatively applied during each phase.
Table 06.02.02-79-10 lists the total mass of retained water in the Reactor Building for each analysis during a transient.
A summary of the water holdup evaluation will be provided in Revision 3 of Technical Report ANP-10293, “U.S. EPR™ Design Features to Address GSI-191,” which is scheduled to be submitted by March 31, 2011.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFT
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dens
ate
Para
met
er
Dur
ing
Blo
wdo
wn
Dur
ing
Ref
ill/R
eflo
od
Dur
ing
Post
R
eflo
od
Tim
e of
Pea
k C
ont.
Pres
sure
Tim
e of
Pea
k IR
WST
Tem
p Ti
me
of H
alf
Peak
Pr
essu
re
Tim
e (s
) 29
.18
60.0
9 60
0.10
36
00.1
1 12
304.
73
4012
2.71
C
onta
inm
ent P
ress
ure
(psi
a)
66.3
7 63
.44
65
.15
69.2
7 61
.63
41
.97
Li
quid
Con
duct
ivity
(B
tu/°F
·ft·h
) 0.
397
0.
398
0.39
7
0.39
7
0.39
8
0.39
8
Liqu
id V
isco
sity
(lbm
/ft·h
) 0.
443
0.44
7
0.44
5
0.43
9
0.45
2
0.50
4
Liqu
id D
ensi
ty (l
bm/ft
³) 57
.33
57.4
2 57
.37
57
.24
57.4
9
58.2
4
Vapo
r Den
sity
(lbm
/ft³)
0.15
32
0.14
68
0.15
05
0.15
95
0.14
29
0.09
96
Late
nt H
eat o
f Vap
oriz
atio
n (B
tu/lb
m)
910.
60
912.
69
911.
48
908.
52
914.
19
932.
9
Tsat
– T
s (°F
) 19
5.38
18
0.97
52
.93
17
.41
11
.39
9.64
H
eigh
t, L
(ft)
134.
2
134.
2 13
4.2
13
4.2
13
4.2
13
4.2
A
vera
ge F
ilm T
hick
ness
(ft)
0.00
157
0.
0015
4 0.
0011
3
0.00
086
0.00
077
0.00
075
DRAF
T6 TT0.39 TTTFT
445
0.
439
44
5
0.4 FTFTFTFT
57.3
7
57.2
457
.37
57
.2 FTFTFTFT0.
1505
0.
10.
1505
FTFTFTFT91
1.48
91
1.48
AFTFTFT AFT
7
52.9
3
52.9
3 AAAFFFAF
4.2
134.
2
134.
2 ARAAA
FRA
0.00
154
0.00
113
0.00
154
0.00
113
RARARARARARARA
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
10 o
f 40
Tabl
e 06
.02.
02-7
2-2—
Mas
s of
Con
dens
atio
n on
Wal
ls
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
0400
2Sp
read
ing
Area
23
90.9
215.
1521
1.71
155.
4111
7.27
106.
3510
4.95
UJA
0400
3IR
WST
53
.84.
844.
763.
502.
642.
392.
36U
JA04
004
KT (N
I DVS
) Sum
p R
oom
56
1.9
50.5
649
.76
36.5
227
.56
24.9
924
.67
UJA
0400
5Fl
oodi
ng D
evic
e C
ompa
rtmen
t 19
07.6
171.
6616
8.92
124.
0093
.56
84.8
583
.74
UJA
0400
6Fl
oodi
ng D
evic
e C
ompa
rtmen
t 19
07.6
171.
6616
8.92
124.
0093
.56
84.8
583
.74
UJA
0401
2El
evat
or
533.
948
.04
47.2
834
.70
26.1
923
.75
23.4
4U
JA04
013
Acce
ss A
rea
418.
837
.69
37.0
827
.22
20.5
418
.63
18.3
8U
JA07
001
Rea
ctor
Cav
ity
1709
.515
3.83
151.
3811
1.12
83.8
576
.04
75.0
4U
JA07
003
IRW
ST A
rea
2709
.524
3.82
239.
9317
6.12
132.
8912
0.52
118.
94U
JA07
004
KT (N
I DVS
) Sum
p R
oom
59
2.1
53.2
852
.43
38.4
929
.04
26.3
425
.99
UJA
0701
2El
evat
or
437.
139
.33
38.7
128
.41
21.4
419
.44
19.1
9U
JA07
013
Acce
ss A
rea
1986
.117
8.72
175.
8712
9.10
97.4
188
.34
87.1
8U
JA07
014
Pipe
Pen
etra
tions
27
51.5
247.
6024
3.64
178.
8513
4.95
122.
3912
0.78
UJA
0701
5Pi
pe P
enet
ratio
ns
2807
.525
2.64
248.
6018
2.49
137.
7012
4.88
123.
24U
JA07
016
Pipe
Pen
etra
tions
33
40.4
300.
5929
5.79
217.
1316
3.84
148.
5814
6.63
UJA
0701
7Ve
ntin
g Ar
ea fo
r Spr
eadi
ng
Com
partm
ent
547.
949
.30
48.5
235
.61
26.8
724
.37
24.0
5U
JA07
018
LCQ
(SG
BS) H
X R
oom
15
32.9
137.
9413
5.74
99.6
475
.19
68.1
867
.29
UJA
0702
0KT
(NI D
VS) F
loor
Dra
in a
nd T
ank
Roo
m
784.
870
.62
69.4
951
.01
38.4
934
.91
34.4
5U
JA07
021
KTA1
0 (N
I DVS
) HX
Roo
m
574.
851
.72
50.9
037
.36
28.1
925
.57
25.2
3U
JA07
022
KTA1
0 (N
I DVS
) Pum
ps R
oom
90
0.0
80.9
979
.69
58.5
044
.14
40.0
339
.51
UJA
0702
3KT
A10
(NI D
VS) F
loor
Dra
in a
nd
Tank
Roo
m
803.
172
.27
71.1
152
.20
39.3
935
.72
35.2
5U
JA07
024
KT (R
CD
T) T
ank
Roo
m
771.
869
.45
68.3
450
.17
37.8
534
.33
33.8
8U
JA07
026
KBA1
2 (C
VCS)
HX
Roo
m
713.
764
.22
63.2
046
.39
35.0
131
.75
31.3
3U
JA07
027
KBA1
1 (C
VCS)
HX
Roo
m
734.
266
.07
65.0
147
.72
36.0
132
.66
32.2
3U
JA07
028
KBA
(CVC
S) V
alve
Roo
m
740.
666
.64
65.5
848
.14
36.3
232
.94
32.5
1U
JA07
029
KBA
(CVC
S) V
alve
Roo
m
582.
452
.41
51.5
737
.86
28.5
725
.91
25.5
6U
JA11
001
JAA1
0 (R
PV) R
oom
10
95.9
98.6
297
.04
71.2
453
.75
48.7
548
.11
DRAF
T.7.7 4.76
4.7
T49
.76
49.
T16
8.92
68.9
212 T
666616
8.9292
124
FT8.
048.
0447
.28
3
FT37
.69
37.
37.0
8 FT15
3.83
53.8
315
1.38
AFT
5524
3.82.82
239.
9
AAF2.
1.153
.288
52 AAF43
7.11
39.3
339
.33
RAAF
1986
.117
8.72
178.
72
RAA2751
.527
524
7.60
2 RRA2807.5807252.
2 RRA3340.43340.4303 RRA547.
9
DRR1532.
153 DR
and
Tank
an
d
DRD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
11 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
1100
2JE
B10
(RC
P) O
il C
olle
ctio
n Ta
nk
Area
93
2.2
83.8
982
.55
60.5
945
.72
41.4
740
.92
UJA
1100
3JE
A10
(SG
) Sup
ports
Are
a 50
4.9
45.4
344
.71
32.8
224
.76
22.4
622
.16
UJA
1100
4JE
A20
(SG
) Sup
ports
Are
a 50
4.9
45.4
344
.71
32.8
224
.76
22.4
622
.16
UJA
1100
5JE
B20
(RC
P) O
il C
olle
ctio
n Ta
nk
Area
93
6.6
84.2
882
.94
60.8
845
.94
41.6
641
.11
UJA
1100
6JE
B30
(RC
P) O
il C
olle
ctio
n Ta
nk
Area
93
6.6
84.2
882
.94
60.8
845
.94
41.6
641
.11
UJA
1100
7JE
A30
(SG
) Sup
ports
Are
a 50
4.9
45.4
344
.71
32.8
224
.76
22.4
622
.16
UJA
1100
8JE
A40
(SG
) Sup
ports
Are
a 50
4.9
45.4
344
.71
32.8
224
.76
22.4
622
.16
UJA
1100
9JE
B40
(RC
P) O
il C
olle
ctio
n Ta
nk
Area
93
2.2
83.8
982
.55
60.5
945
.72
41.4
740
.92
UJA
1101
0So
uth
Stai
rcas
e 57
4.8
51.7
250
.90
37.3
628
.19
25.5
725
.23
UJA
1101
2El
evat
or
419.
837
.78
37.1
727
.29
20.5
918
.67
18.4
3U
JA11
013
Loop
1 A
nnul
ar A
rea
180-
270
Deg
24
88.9
223.
9722
0.39
161.
7812
2.07
110.
7110
9.25
UJA
1101
4Lo
op 2
Ann
ular
Are
a 27
0-0
Deg
18
20.4
163.
8116
1.20
118.
3389
.29
80.9
779
.91
UJA
1101
5Lo
op 3
Ann
ular
Are
a 0-
90 D
eg
1906
.517
1.56
168.
8212
3.93
93.5
184
.80
83.6
9U
JA11
016
Loop
4 A
nnul
ar A
rea
90-1
80 D
eg
2505
.022
5.42
221.
8216
2.83
122.
8611
1.43
109.
96
UJA
1101
7Ve
ntin
g Ar
ea fo
r Spr
eadi
ng
Com
partm
ent
724.
565
.20
64.1
547
.09
35.5
332
.23
31.8
0U
JA11
018
LCQ
50 (S
GBS
) Tan
k R
oom
21
46.5
193.
1619
0.07
139.
5310
5.28
95.4
894
.22
UJA
1101
9JE
G (P
RT)
Tan
k R
oom
15
37.2
138.
3313
6.12
99.9
275
.40
68.3
867
.48
UJA
1102
0Ac
cess
to P
erso
nnel
Airl
ock
1711
.615
4.02
151.
5611
1.26
83.9
576
.13
75.1
3U
JA11
021
FAL
(FPP
S) V
alve
Roo
m
591.
053
.18
52.3
338
.42
28.9
926
.29
25.9
4U
JA11
022
KBA
(CVC
S) V
alve
Roo
m
856.
977
.11
75.8
855
.70
42.0
338
.12
37.6
1U
JA11
023
KBA
(CVC
S) V
alve
Roo
m
1398
.412
5.84
123.
8390
.90
68.5
962
.20
61.3
8U
JA11
024
KBA1
0 (C
VCS)
HX
Roo
m
812.
873
.14
71.9
752
.83
39.8
736
.15
35.6
8
UJA
1102
5JN
D &
JN
G (M
HSI
& L
HSI
) Val
ve 1
R
oom
81
8.1
73.6
272
.44
53.1
840
.13
36.3
935
.91
UJA
1102
6JN
D &
JN
G (M
HSI
& L
HSI
) Val
ve 2
R
oom
74
7.1
67.2
366
.16
48.5
636
.64
33.2
332
.79
UJA
1102
7JN
D &
JN
G (M
HSI
& L
HSI
) Val
ve 3
74
7.1
67.2
366
.16
48.5
636
.64
33.2
332
.79
DRAF
T.7.7
44.7
144
.7
T82
.94
82.9
46
FT4.
284.
2882
.94
6
FT45
.43
4544
.71 FT
45.4
345
.43
44.7
1
AFT
2.2.2
83.8
983
.89
82 AAF57
4.88
51.7
251
.72
RAAF
419.
837
.78
37.7
8
RAA2488
.924
8822
3.97
2 RRA1820.41820163.
1 RRA1906.51906.5171 RRAeg
25
05.0
2505
.0
DRR724.
72 DRRoo
m
oom
21
414 DRDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
12 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
Roo
m
UJA
1102
8JN
D &
JN
G (M
HSI
& L
HSI
) Val
ve 4
R
oom
81
8.1
73.6
272
.44
53.1
840
.13
36.3
935
.91
UJA
1103
1Ac
cess
to L
oop
1 &
2 Ar
ea
478.
043
.01
42.3
331
.07
23.4
421
.26
20.9
8U
JA11
032
Acce
ss to
Loo
p 3
& 4
Area
47
8.0
43.0
142
.33
31.0
723
.44
21.2
620
.98
UJA
1500
1R
eact
or C
avity
14
46.8
130.
1912
8.11
94.0
470
.96
64.3
663
.51
UJA
1500
2JE
B10
Pum
p (R
CP)
Roo
m
1242
.311
1.79
110.
0180
.75
60.9
355
.26
54.5
3U
JA15
003
JEA1
0 (S
G) S
uppo
rt Ar
ea
1382
.212
4.38
122.
3989
.84
67.7
961
.48
60.6
7U
JA15
004
JEA2
0 (S
G) S
uppo
rt Ar
ea
1409
.112
6.80
124.
7891
.59
69.1
162
.68
61.8
5U
JA15
005
JEB2
0 Pu
mp
(RC
P) R
oom
13
03.6
117.
3111
5.43
84.7
463
.94
57.9
957
.22
UJA
1500
6JE
B30
Pum
p (R
CP)
Roo
m
1303
.611
7.31
115.
4384
.74
63.9
457
.99
57.2
2U
JA15
007
JEA3
0 (S
G) S
uppo
rt Ar
ea
1409
.112
6.80
124.
7891
.59
69.1
162
.68
61.8
5U
JA15
008
JEA4
0 (S
G) S
uppo
rt Ar
ea
1382
.212
4.38
122.
3989
.84
67.7
961
.48
60.6
7U
JA15
009
JEB4
0 Pu
mp
(RC
P) R
oom
12
42.3
111.
7911
0.01
80.7
560
.93
55.2
654
.53
UJA
1501
0So
uth
Stai
rcas
e 64
7.0
58.2
257
.29
42.0
631
.73
28.7
828
.40
UJA
1501
1N
orth
Sta
ircas
e 80
6.3
72.5
671
.40
52.4
139
.55
35.8
735
.39
UJA
1501
2El
evat
or
313.
328
.19
27.7
420
.36
15.3
713
.94
13.7
5
UJA
1501
3JN
G13
(LH
SI) T
ank
& Lo
op 1
Ann
ular
Ar
ea
2296
.220
6.63
203.
3314
9.26
112.
6210
2.14
100.
79
UJA
1501
4JN
G23
(LH
SI) T
ank
& Lo
op 2
Ann
ular
Ar
ea
2932
.426
3.88
259.
6619
0.61
143.
8313
0.44
128.
72
UJA
1501
5JN
G33
(LH
SI) T
ank
& Lo
op 3
Ann
ular
Ar
ea
3110
.027
9.86
275.
3920
2.15
152.
5413
8.34
136.
52
UJA
1501
6JN
G43
(LH
SI) T
ank
& Lo
op 4
Ann
ular
Ar
ea
2526
.522
7.35
223.
7216
4.23
123.
9211
2.38
110.
90U
JA15
017
Cor
e In
tern
als
Stor
age
Roo
m
426.
338
.36
37.7
527
.71
20.9
118
.96
18.7
1U
JA15
018
Spra
y Li
nes
Area
93
7.6
84.3
783
.02
60.9
545
.99
41.7
141
.16
UJA
1501
9Su
rge
Line
Are
a 11
24.9
101.
2399
.61
73.1
255
.17
50.0
449
.38
UJA
1502
0Ac
cess
to T
rans
fer T
ube
Com
partm
ent
793.
471
.40
70.2
651
.57
38.9
135
.29
34.8
3U
JA15
021
Tran
sfer
Tub
e C
ompa
rtmen
t 79
7.7
71.7
870
.64
51.8
539
.13
35.4
835
.02
UJA
1502
3In
stru
men
tatio
n La
nces
Sto
rage
50
3.8
45.3
444
.61
32.7
524
.71
22.4
122
.11
DRAF
T.4
4.4
442
.33
42.3
T42
.33
42.
T12
8.11
28.1
19
FT7979
110.
010180
FT4.
384.
3812
2.39
8
FT12
6.80
126
124.
781 FT
117.
3117
.31
115.
43
AFT
6611
7.31.31
115.
4
AAF9.
1.112
6.80
126.
8012
4
AAF38
2.22
124.
3812
4.38
RAAF
1242
.311
1.79
111.
79
RAA647.
064
58.2
2
RRA806.380672.
RRA313.3313.32 RRAAn
nula
r ar22
96.2
2 DRRop
2 A
nnul
ar
op 2
Ann
ular
29
393 DRp
3 An
nula
r p
3 A
DDAn
nula
r An
nula
r
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
13 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
Roo
m
UJA
1502
4Ac
cess
to R
eact
or C
avity
39
6.2
35.6
535
.08
25.7
519
.43
17.6
217
.39
UJA
1502
5FA
L (F
PPS)
Roo
m
564.
150
.76
49.9
536
.67
27.6
725
.09
24.7
6U
JA15
026
HVA
C
648.
158
.32
57.3
942
.13
31.7
928
.83
28.4
5U
JA15
027
HVA
C
648.
158
.32
57.3
942
.13
31.7
928
.83
28.4
5U
JA18
001
Rea
ctor
Cav
ity
2099
.218
8.90
185.
8813
6.45
102.
9693
.37
92.1
5U
JA18
002
JEB1
0 Pu
mp
(RC
P) R
oom
17
84.8
160.
6115
8.04
116.
0187
.54
79.3
978
.35
UJA
1800
3JE
A10
(SG
) Roo
m
1356
.412
2.06
120.
1188
.17
66.5
360
.33
59.5
4U
JA18
004
JEA2
0 (S
G) R
oom
13
95.1
125.
5412
3.54
90.6
868
.43
62.0
661
.24
UJA
1800
5JE
B20
Pum
p (R
CP)
Roo
m
1872
.016
8.46
165.
7612
1.68
91.8
283
.27
82.1
7U
JA18
006
JEB3
0 Pu
mp
(RC
P) R
oom
18
72.0
168.
4616
5.76
121.
6891
.82
83.2
782
.17
UJA
1800
7JE
A30
(SG
) Roo
m
1395
.112
5.54
123.
5490
.68
68.4
362
.06
61.2
4U
JA18
008
JEA4
0 (S
G) R
oom
13
56.4
122.
0612
0.11
88.1
766
.53
60.3
359
.54
UJA
1800
9JE
B40
Pum
p (R
CP)
Roo
m
1784
.816
0.61
158.
0411
6.01
87.5
479
.39
78.3
5U
JA18
010
Sout
h St
airc
ase
929.
083
.60
82.2
660
.39
45.5
741
.32
40.7
8U
JA18
011
Nor
th S
tairc
ase
1158
.310
4.23
102.
5775
.29
56.8
151
.52
50.8
4U
JA18
012
Elev
ator
58
6.7
52.8
051
.95
38.1
428
.78
26.1
025
.75
UJA
1801
3JN
G13
(LH
SI) T
ank
& Lo
op 1
Ann
ular
Ar
ea
3763
.433
8.66
333.
2524
4.63
184.
5916
7.40
165.
20
UJA
1801
4JN
G23
(LH
SI) T
ank
& Lo
op 2
Ann
ular
Ar
ea
4494
.440
4.44
397.
9829
2.14
220.
4419
9.92
197.
29
UJA
1801
5JN
G33
(LH
SI) T
ank
& Lo
op 3
Ann
ular
Ar
ea
4203
.737
8.28
372.
2427
3.25
206.
1818
6.98
184.
52
UJA
1801
6JN
G43
(LH
SI) T
ank
& Lo
op 4
Ann
ular
Ar
ea
3830
.234
4.67
339.
1624
8.97
187.
8617
0.37
168.
13U
JA18
017
Cor
e In
tern
als
Stor
age
Roo
m
1707
.315
3.63
151.
1811
0.98
83.7
475
.94
74.9
4U
JA18
018
Spra
y Li
nes
Area
17
23.5
155.
0915
2.62
112.
0384
.53
76.6
675
.65
UJA
1801
9Su
rge
Line
Are
a 17
23.5
155.
0915
2.62
112.
0384
.53
76.6
675
.65
UJA
1802
0C
orrid
or
1002
.290
.18
88.7
465
.14
49.1
644
.58
43.9
9U
JA18
021
Tran
sfer
Tub
e C
ompa
rtmen
t 10
88.3
97.9
396
.37
70.7
453
.38
48.4
147
.77
UJA
1802
3In
stru
men
tatio
n La
nces
Sto
rage
R
oom
11
89.5
107.
0410
5.33
77.3
258
.34
52.9
152
.21
DRAF
T.9
5.9
557
.39
57.3
T57
.39
57.
T18
5.88
85.8
813
FT6161
158.
040411
6
FT2.
062.
0612
0.11
8
FT12
5.54
125
123.
541 FT
168.
4668
.46
165.
76
AFT
0016
8.46.46
165.
7
AAF5.
1.112
5.54
125.
5412
3
AAF35
6.44
122.
0612
2.06
RAAF
1784
.816
0.61
160.
61
RAA929.
092
83.6
0
RRA1158.3158104.
1 RRA586.7586.75 RRAAn
nula
r ar37
63.4
3 DRRop
2 A
nnul
ar
op 2
Ann
ular
44
949 DRp
3 An
nula
r p
3 A
DDAn
nula
r An
nula
r
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
14 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
1802
6H
VAC
93
1.2
83.8
082
.46
60.5
345
.67
41.4
240
.88
UJA
1802
7H
VAC
93
1.2
83.8
082
.46
60.5
345
.67
41.4
240
.88
UJA
2300
1R
eact
or C
avity
19
14.0
172.
2316
9.48
124.
4193
.88
85.1
484
.02
UJA
2300
2JE
B10
Pum
p (R
CP)
Roo
m
1644
.914
8.02
145.
6610
6.92
80.6
873
.17
72.2
0U
JA23
003
JEA1
0 (S
G) R
oom
15
16.8
136.
4913
4.31
98.5
974
.40
67.4
766
.58
UJA
2300
4JE
A20
(SG
) Roo
m
1559
.814
0.36
138.
1210
1.39
76.5
069
.38
68.4
7U
JA23
005
JEB2
0 Pu
mp
(RC
P) R
oom
20
92.7
188.
3218
5.31
136.
0310
2.64
93.0
991
.86
UJA
2300
6JE
B30
Pum
p (R
CP)
Roo
m
2092
.718
8.32
185.
3113
6.03
102.
6493
.09
91.8
6U
JA23
007
JEA3
0 (S
G) R
oom
15
59.8
140.
3613
8.12
101.
3976
.50
69.3
868
.47
UJA
2300
8JE
A40
(SG
) Roo
m
1516
.813
6.49
134.
3198
.59
74.4
067
.47
66.5
8U
JA23
009
JEB4
0 Pu
mp
(RC
P) R
oom
16
44.9
148.
0214
5.66
106.
9280
.68
73.1
772
.20
UJA
2301
0So
uth
Stai
rcas
e 10
38.8
93.4
891
.99
67.5
250
.95
46.2
145
.60
UJA
2301
1N
orth
Sta
ircas
e 12
95.0
116.
5311
4.67
84.1
863
.52
57.6
056
.85
UJA
2301
2El
evat
or
655.
659
.00
58.0
542
.61
32.1
629
.16
28.7
8
UJA
2301
3JN
G13
(LH
SI) T
ank
& Lo
op 1
Ann
ular
Ar
ea
3781
.734
0.30
334.
8724
5.82
185.
4816
8.21
166.
00
UJA
2301
4JN
G23
(LH
SI) T
ank
& Lo
op 2
Ann
ular
Ar
ea
4111
.136
9.94
364.
0426
7.23
201.
6418
2.87
180.
46
UJA
2301
5JN
G33
(LH
SI) T
ank
& Lo
op 3
Ann
ular
Ar
ea
3843
.134
5.83
340.
3024
9.81
188.
4917
0.95
168.
70
UJA
2301
6JN
G43
(LH
SI) T
ank
& Lo
op 4
Ann
ular
Ar
ea
3829
.134
4.57
339.
0724
8.90
187.
8117
0.32
168.
08U
JA23
017
HVA
C
2993
.726
9.39
265.
0919
4.59
146.
8313
3.16
131.
41U
JA23
018
HVA
C
1437
.112
9.32
127.
2593
.41
70.4
963
.92
63.0
8U
JA23
019
JEF1
0 (R
CS)
Pre
ssur
izer
Roo
m
1966
.817
6.99
174.
1612
7.84
96.4
787
.49
86.3
3U
JA23
020
FAL
(FPP
S) V
alve
Roo
m
920.
482
.82
81.5
059
.83
45.1
440
.94
40.4
0U
JA23
021
Tran
sfer
Tub
e C
ompa
rtmen
t 12
16.4
109.
4610
7.71
79.0
759
.66
54.1
153
.39
UJA
2302
3In
stru
men
tatio
n La
nces
Sto
rage
R
oom
13
16.6
118.
4811
6.58
85.5
864
.58
58.5
657
.79
UJA
2302
6H
VAC
Duc
t 64
8.1
58.3
257
.39
42.1
331
.79
28.8
328
.45
UJA
2302
7H
VAC
Duc
t 64
8.1
58.3
257
.39
42.1
331
.79
28.8
328
.45
UJA
2303
1FA
L (F
PPS)
Pum
p R
oom
92
4.7
83.2
181
.88
60.1
145
.35
41.1
340
.59
DRAF
T.4
8.4
845
.66
45.6
T13
4.31
134.
T13
8.12
38.1
210
FT3232
185.
313113
6
FT8.
328.
3218
5.31
13
FT14
0.36
140
138.
121 FT
136.
4936
.49
134.
31
AFT
9914
8.02.02
145.
6
AAF8.
8.893
.48
93.4
891 AAF
295.
0011
6.53
116.
53
RAAF
655.
659
.00
59.0
0
RAA3781.7781340.
3 RRAnu
lar
ular
41
11.1
4111
1
DRRA
3 An
nula
r 3
Annu
lar
3843
.38
4 DRRoo
p 4
Annu
lar
oop
4 An
nula
r 3 DRD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
15 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
2304
1In
stru
men
tatio
n M
easu
ring
Tabl
e R
oom
91
7.2
82.5
481
.22
59.6
244
.99
40.8
040
.26
UJA
2304
2In
stru
men
tatio
n M
easu
ring
Cab
inet
s R
oom
12
40.1
111.
5910
9.81
80.6
160
.82
55.1
654
.44
UJA
2900
3JE
A10
(SG
) Roo
m
1174
.510
5.69
104.
0076
.34
57.6
152
.24
51.5
6U
JA29
004
JEA2
0 (S
G) R
oom
11
669.
210
50.0
710
33.3
075
8.51
572.
3551
9.06
512.
23U
JA29
005
JEB2
0 Pu
mp
(RC
P) R
oom
11
21.7
100.
9499
.33
72.9
155
.02
49.8
949
.24
UJA
2900
6JE
B30
Pum
p (R
CP)
Roo
m
1179
.810
6.17
104.
4776
.69
57.8
752
.48
51.7
9U
JA29
007
JEA3
0 (S
G) R
oom
11
66.9
105.
0110
3.33
75.8
557
.23
51.9
051
.22
UJA
2900
8JE
A40
(SG
) Roo
m
1174
.510
5.69
104.
0076
.34
57.6
152
.24
51.5
6U
JA29
011
Nor
th S
tairc
ase
1031
.392
.80
91.3
267
.04
50.5
845
.87
45.2
7U
JA29
012
Elev
ator
40
5.8
36.5
235
.93
26.3
819
.90
18.0
517
.81
UJA
2901
3Se
tdow
n Ar
ea, O
pera
ting
floor
40
21.8
361.
9135
6.13
261.
4219
7.26
178.
8917
6.54
UJA
2901
4An
nula
r Are
a, 2
40-0
Deg
36
99.9
332.
9432
7.62
240.
5018
1.47
164.
5816
2.41
UJA
2901
5An
nula
r Are
a, 0
-120
Deg
34
23.3
308.
0530
3.13
222.
5216
7.90
152.
2715
0.27
UJA
2901
6Ac
cess
to E
quip
men
t Hat
ch
2988
.426
8.92
264.
6219
4.25
146.
5713
2.93
131.
18U
JA29
018
Acce
ss to
Ope
ratin
g Fl
oor
1156
.210
4.04
102.
3875
.15
56.7
151
.43
50.7
5U
JA29
019
JEF1
0 (R
CS)
Pre
ssur
izer
Roo
m
1385
.512
4.68
122.
6990
.06
67.9
661
.63
60.8
2
UJA
2902
2KL
A51/
52 C
ompr
esso
r & K
LA50
Filt
er
(CBV
S) R
oom
15
67.4
141.
0513
8.79
101.
8876
.88
69.7
268
.80
UJA
2902
3Ac
cess
to E
mer
genc
y Ai
rlock
14
41.4
129.
7112
7.64
93.6
970
.70
64.1
163
.27
UJA
2902
5H
VAC
Sha
ft 48
3.3
43.4
942
.80
31.4
223
.70
21.5
021
.21
UJA
2902
6H
VAC
Sha
ft 48
3.3
43.4
942
.80
31.4
223
.70
21.5
021
.21
UJA
3400
3JE
A10
(SG
) Roo
m
1863
.416
7.68
165.
0012
1.12
91.4
082
.89
81.8
0U
JA34
004
JEA2
0 (S
G) R
oom
18
51.6
166.
6216
3.96
120.
3690
.82
82.3
681
.28
UJA
3400
5JE
B20
Pum
p (R
CP)
Roo
m
1072
.296
.48
94.9
469
.69
52.5
947
.69
47.0
7U
JA34
006
JEB3
0 Pu
mp
(RC
P) R
oom
11
28.2
101.
5299
.90
73.3
355
.34
50.1
849
.52
UJA
3400
7JE
A30
(SG
) Roo
m
1851
.616
6.62
163.
9612
0.36
90.8
282
.36
81.2
8U
JA34
008
JEA4
0 (S
G) R
oom
18
63.4
167.
6816
5.00
121.
1291
.40
82.8
981
.80
UJA
3401
1N
orth
Sta
ircas
e 86
2.3
77.6
076
.36
56.0
542
.29
38.3
637
.85
UJA
3401
2El
evat
or
344.
531
.00
30.5
122
.39
16.9
015
.32
15.1
2U
JA34
013
Setd
own
Area
, Ope
ratin
g flo
or
4969
.144
7.15
440.
0132
3.00
243.
7222
1.03
218.
12
DRAF
T10
9.81
109.
T10
4.00
104.
0
T77
1033
.30
1033
.30
758
FT9494
99.3
3372
FT06
.17
06.1
104.
47 FT10
5.01
105.
103.
331 AF
T10
5.69
05.6
910
4.00
AAF33
92.8
08091
.3
AAF05
.8.836
.52
363 AAF
4021
.8836
1.91
361.
91
RAAF
3699
.936
332.
9433
2.94
RAA3423.33423308.
05
RRA2988.4988268
2 RRA1156.21156.211 DRRA
om
1385
.5m
1 DRR
LA50
Filt
er
LA50
Filt
er
1567
156 DR
rlock
rlo
ck
14 DRDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
16 o
f 40
Roo
m
Des
crip
tion
Are
a of
W
alls
(ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
3401
4An
nula
r Are
a, 2
40-0
Deg
52
05.9
468.
4646
0.98
338.
3925
5.34
231.
5622
8.52
UJA
3401
5An
nula
r Are
a, 0
-120
Deg
41
89.7
377.
0237
1.00
272.
3420
5.49
186.
3618
3.91
UJA
3401
8R
PV C
losu
re H
ead
Stor
age
Area
14
31.7
128.
8312
6.78
93.0
670
.22
63.6
862
.85
UJA
3401
9Pr
essu
rizer
Hea
d &
Safe
ty R
elie
f Va
lves
Roo
m
879.
579
.14
77.8
857
.17
43.1
439
.12
38.6
1U
JA34
022
JEG
(RPS
) Val
ve R
oom
97
1.0
87.3
885
.98
63.1
247
.63
43.1
942
.62
UJA
3402
5H
VAC
Sha
ft 34
8.8
31.3
930
.89
22.6
717
.11
15.5
115
.31
UJA
3402
6H
VAC
Sha
ft 34
8.8
31.3
930
.89
22.6
717
.11
15.5
115
.31
UJA
4100
3JE
A10
(SG
) Roo
m
842.
975
.85
74.6
454
.79
41.3
437
.49
37.0
0U
JA41
004
JEA2
0 (S
G) R
oom
83
7.5
75.3
674
.16
54.4
441
.08
37.2
536
.76
UJA
4100
7JE
A30
(SG
) Roo
m
837.
575
.36
74.1
654
.44
41.0
837
.25
36.7
6U
JA41
008
JEA4
0 (S
G) R
oom
84
2.9
75.8
574
.64
54.7
941
.34
37.4
937
.00
UJA
4101
3Se
tdow
n Ar
ea, O
pera
ting
floor
70
00.5
629.
9561
9.89
455.
0434
3.36
311.
3930
7.29
UJA
4101
4An
nula
r Are
a, 2
40-0
Deg
55
97.8
503.
7349
5.68
363.
8627
4.56
249.
0024
5.72
UJA
4101
5An
nula
r Are
a, 0
-120
Deg
52
02.7
468.
1746
0.70
338.
1825
5.18
231.
4222
8.38
UJA
4000
1D
ome
2521
4.8
2269
.00
2232
.76
1639
.00
1236
.73
1121
.58
1106
.82
Sum
2721
7.19
2678
2.52
1966
0.19
1483
4.84
1345
3.65
1327
6.64
10%
Unc
erta
inty
Fac
tor
2721
.72
2678
.25
1966
.02
1483
.48
1345
.36
1327
.66
Tota
l 29
938.
9129
460.
7821
626.
2116
318.
3314
799.
0114
604.
30
DRAF
T.7
8.7
8
77.8
877
.
T85
.98
85.9
86
FT3939
30.8
98922
FT1.
391.
3930
.89
2
FT75
.85
7574
.64 FT
75.3
675
.36
74.1
6
AFT
5575
.36
.36
74.1
AAF2.
9.975
.85
75.8
574 AAF
7000
.5562
9.95
629.
9566
RAAF
5597
.850
3.73
503.
73
RAA5202
.752
046
8.17
4 RRA25
214.
821
422
69.
22 RRASumSum272272 RRRRARARARA%
Unc
erta
inty
Fac
tor
rtain
ty F
acto
r RRRRRRTo
tal
To DRDRDRRRDRDRDRR
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
17 o
f 40
Tabl
e 06
.02.
02-7
2-3—
Cei
ling
Con
dens
ate
Mas
s pe
r Squ
are
Foot
Para
met
er
Dur
ing
Blo
wdo
wn
Dur
ing
Ref
ill/R
eflo
odD
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
re
Tim
e of
Pea
k IR
WST
Tem
p Ti
me
of H
alf
Peak
Pre
ssur
e
Tim
e (s
) 29
.18
60.0
9 60
0.10
36
00.1
1 12
304.
73
4012
2.71
C
onta
inm
ent P
ress
ure,
(p
sia)
66
.37
63.4
4 65
.15
69.2
7
61.6
3
41.9
7
Surfa
ce T
ensi
on (l
bm/h
r²)
1.40
3e6
1.41
2e6
1.40
7e6
1.39
3e6
1.
419e
6 1.
502e
6 Li
quid
Den
sity
(lbm
/ft³)
57.3
3 57
.42
57.3
7 57
.24
57
.49
58.2
4 Va
por D
ensi
ty (l
bm/ft
³) 0.
1532
0.
1468
0.
1505
0.
1595
0.
1429
0.
0996
M
axim
um D
rop
Rad
ius
(ft)
1.32
9e-2
1.
332e
-2
1.33
0e-2
1.
325e
-2
1.33
4e-2
1.
363e
-2
Volu
me
of O
ne D
rop
(ft³)
4.91
2e-6
4.
947e
-6
4.92
8e-6
4.
872e
-6
4.97
4e-6
5.
307e
-6
Num
ber o
f Dro
ps p
er
Squa
re F
oot (
1/ft²
) 14
16.1
75
1409
.521
14
13.2
04
1423
.939
14
04.3
78
1345
.126
Volu
me
of D
rops
per
Sq
uare
Foo
t (ft³
/ft²)
6.95
7e-3
6.
973e
-3
6.96
4e-3
6.
938e
-3
6.98
6e-3
7.
138e
-3
DRAF
T33 69 TT6
1.39
3e6
6
1.3 TTTFT
37
37
57.2
4
57. FTFTFTFT
1505
0.
1595
1505
0.
159 FTFTFTFT
1.33
0e-2
1.
325
.330
e-2
FTFTFTFT4.
928e
-6
4.8
28e-
6 AFTFTFTFT
1413
.204
14
13.2
04 AFFF RAA
F-3
6.
964e
-3
6.96
4e-3
AAAF RARARARA
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
18 o
f 40
Tabl
e 06
.02.
02-7
2-4—
Mas
s of
Con
dens
ate
on C
eilin
g
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
0400
2 Sp
read
ing
Area
22
29.4
288
9.17
892.
6689
0.72
885.
3589
5.39
926.
83U
JA04
003
IRW
ST
1767
.61
704.
9870
7.75
706.
2270
1.95
709.
9173
4.84
UJA
0400
4 KT
(NI D
VS) S
ump
Roo
m
UJA
0400
5 Fl
oodi
ng D
evic
e C
ompa
rtmen
t U
JA04
006
Floo
ding
Dev
ice
Com
partm
ent
UJA
0401
2 El
evat
or
UJA
0401
3 Ac
cess
Are
a U
JA07
001
Rea
ctor
Cav
ity
UJA
0700
3 IR
WST
Are
a 41
02.5
316
36.2
316
42.6
616
39.0
916
29.2
016
47.6
717
05.5
3U
JA07
004
KT (N
I DVS
) Sum
p R
oom
78
.58
31.3
431
.46
31.4
031
.21
31.5
632
.67
U
JA07
012
Elev
ator
U
JA07
013
Acce
ss A
rea
1114
.17
444.
3744
6.12
445.
1544
2.46
447.
4846
3.19
UJA
0701
4 Pi
pe P
enet
ratio
ns
2053
.95
819.
1882
2.40
820.
6281
5.67
824.
9185
3.88
UJA
0701
5 Pi
pe P
enet
ratio
ns
2090
.56
833.
7983
7.06
835.
2483
0.20
839.
6286
9.10
UJA
0701
6 Pi
pe P
enet
ratio
ns
2090
.56
833.
7983
7.06
835.
2483
0.20
839.
6286
9.10
UJA
0701
7 Ve
ntin
g Ar
ea fo
r Spr
eadi
ng
Com
partm
ent
UJA
0701
8 LC
Q (S
GBS
) HX
Roo
m
1058
.20
422.
0542
3.70
422.
7842
0.23
425.
0043
9.92
U
JA07
020
KT (N
I DVS
) Flo
or D
rain
and
Ta
nk R
oom
34
2.33
136.
5313
7.07
136.
7713
5.95
137.
4914
2.32
U
JA07
021
KTA1
0 (N
I DVS
) HX
Roo
m
117.
3446
.80
46.9
846
.88
46.6
047
.13
48.7
8
UJA
0702
2 KT
A10
(NI D
VS) P
umps
Roo
m
361.
7014
4.26
144.
8314
4.51
143.
6414
5.27
150.
37
UJA
0702
3 KT
A10
(NI D
VS) F
loor
Dra
in a
nd
Tank
Roo
m
291.
7311
6.35
116.
8111
6.56
115.
8511
7.17
121.
28
UJA
0702
4 KT
(RC
DT)
Tan
k R
oom
32
9.41
131.
3813
1.90
131.
6113
0.82
132.
3013
6.94
U
JA07
026
KBA1
2 (C
VCS)
HX
Roo
m
184.
0873
.42
73.7
173
.55
73.1
073
.93
76.5
3
UJA
0702
7 KB
A11
(CVC
S) H
X R
oom
17
6.55
70.4
170
.69
70.5
470
.11
70.9
173
.40
U
JA07
028
KBA
(CVC
S) V
alve
Roo
m
153.
9461
.40
61.6
461
.50
61.1
361
.83
64.0
0
UJA
0702
9 KB
A (C
VCS)
Val
ve R
oom
12
2.72
48.9
449
.14
49.0
348
.73
49.2
951
.02
U
JA11
001
JAA1
0 (R
PV) R
oom
66
T7.
757.
75
TTTFFTFFTFFT AFFT
1636
.23
1642
.66
1 AFF31.3431.31.4
3 AAF RAAF
4.17
444.
3744
4.37 RAA
2053
.95
2053
.95
819.
1881
9 RAA20
90.5
620
90.5
683
3.79
833 RA
2090
.56
0.56
833.
833. RA DR1058.201058.20 DR
n an
d n
and
D342
3 D11 Dm
m
DD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
19 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
1100
2 JE
B10
(RC
P) O
il C
olle
ctio
n Ta
nk A
rea
UJA
1100
3 JE
A10
(SG
) Sup
ports
Are
a U
JA11
004
JEA2
0 (S
G) S
uppo
rts A
rea
UJA
1100
5 JE
B20
(RC
P) O
il C
olle
ctio
n Ta
nk A
rea
UJA
1100
6 JE
B30
(RC
P) O
il C
olle
ctio
n Ta
nk A
rea
UJA
1100
7 JE
A30
(SG
) Sup
ports
Are
a U
JA11
008
JEA4
0 (S
G) S
uppo
rts A
rea
UJA
1100
9 JE
B40
(RC
P) O
il C
olle
ctio
n Ta
nk A
rea
UJA
1101
0 So
uth
Stai
rcas
e U
JA11
012
Elev
ator
UJA
1101
3 Lo
op 1
Ann
ular
Are
a 18
0-27
0 D
eg
1556
.61
620.
8362
3.27
621.
9161
8.16
625.
1764
7.12
UJA
1101
4 Lo
op 2
Ann
ular
Are
a 27
0-0
Deg
10
53.8
942
0.33
421.
9842
1.06
418.
5242
3.27
438.
13
UJA
1101
5 Lo
op 3
Ann
ular
Are
a 0-
90 D
eg
1191
.68
475.
2847
7.15
476.
1147
3.24
478.
6149
5.41
UJA
1101
6 Lo
op 4
Ann
ular
Are
a 90
-180
D
eg
1599
.67
638.
0064
0.51
639.
1263
5.26
642.
4666
5.03
UJA
1101
8 LC
Q50
(SG
BS) T
ank
Roo
m
641.
5925
5.89
256.
8925
6.34
254.
7925
7.68
266.
73
UJA
1101
9 JE
G (P
RT)
Tan
k R
oom
47
2.58
188.
4818
9.22
188.
8118
7.67
189.
8019
6.46
U
JA11
020
Acce
ss to
Per
sonn
el A
irloc
k 10
33.4
441
2.17
413.
7941
2.89
410.
4041
5.05
429.
63
UJA
1102
1 FA
L (F
PPS)
Val
ve R
oom
12
3.80
49.3
849
.57
49.4
649
.16
49.7
251
.47
U
JA11
022
KBA
(CVC
S) V
alve
Roo
m
134.
5653
.67
53.8
853
.76
53.4
454
.04
55.9
4
UJA
1102
3 KB
A (C
VCS)
Val
ve R
oom
31
2.18
124.
5112
5.00
124.
7312
3.97
125.
3812
9.78
U
JA11
024
KBA1
0 (C
VCS)
HX
Roo
m
215.
3085
.87
86.2
186
.02
85.5
086
.47
89.5
1
UJA
1102
5 JN
D &
JN
G (M
HSI
& L
HSI
) Va
lve
1 R
oom
19
5.92
78.1
478
.45
78.2
877
.80
78.6
981
.45
UJA
1102
6 JN
D &
JN
G (M
HSI
& L
HSI
) Va
lve
2 R
oom
19
5.92
78.1
478
.45
78.2
877
.80
78.6
981
.45
U
JA11
027
JND
& J
NG
(MH
SI &
LH
SI)
157.
17
TTFTFFTFFT AFFTAAFF RAAFRAA
1556
.61
1556
.61
620.
8362
0 RAA10
53.8
910
53.8
942
0.42
0. RAg
1191
.68
1191
.64747
DR0 0
1599
.67
1599
. DRoo
m
641.
59oo
m
641.
59 DD472
4 D1010 DDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
20 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
Valv
e 3
Roo
m
62.6
862
.93
62.7
962
.42
63.1
265
.34
UJA
1102
8 JN
D &
JN
G (M
HSI
& L
HSI
) Va
lve
4 R
oom
19
5.92
78.1
478
.45
78.2
877
.80
78.6
981
.45
UJA
1103
1 Ac
cess
to L
oop
1 &
2 Ar
ea
88.2
735
.21
35.3
435
.27
35.0
535
.45
36.7
0
UJA
1103
2 Ac
cess
to L
oop
3 &
4 Ar
ea
88.2
735
.21
35.3
435
.27
35.0
535
.45
36.7
0
UJA
1101
7 Ve
ntin
g Ar
ea fo
r Spr
eadi
ng
Com
partm
ent
79.6
631
.77
31.9
031
.83
31.6
331
.99
33.1
2
UJA
1500
1 R
eact
or C
avity
U
JA15
002
JEB1
0 Pu
mp
(RC
P) R
oom
U
JA15
003
JEA1
0 (S
G) S
uppo
rt Ar
ea
UJA
1500
4 JE
A20
(SG
) Sup
port
Area
U
JA15
005
JEB2
0 Pu
mp
(RC
P) R
oom
U
JA15
006
JEB3
0 Pu
mp
(RC
P) R
oom
U
JA15
007
JEA3
0 (S
G) S
uppo
rt Ar
ea
UJA
1500
8 JE
A40
(SG
) Sup
port
Area
U
JA15
009
JEB4
0 Pu
mp
(RC
P) R
oom
U
JA15
010
Sout
h St
airc
ase
UJA
1501
1 N
orth
Sta
ircas
e U
JA15
012
Elev
ator
UJA
1501
3 JN
G13
(LH
SI) T
ank
& Lo
op 1
An
nula
r Are
a
UJA
1501
4 JN
G23
(LH
SI) T
ank
& Lo
op 2
An
nula
r Are
a
UJA
1501
5 JN
G33
(LH
SI) T
ank
& Lo
op 3
An
nula
r Are
a
UJA
1501
6 JN
G43
(LH
SI) T
ank
& Lo
op 4
An
nula
r Are
a U
JA15
017
Cor
e In
tern
als
Stor
age
Roo
m
UJA
1501
8 Sp
ray
Line
s Ar
ea
469.
3518
7.19
187.
9318
7.52
186.
3918
8.50
195.
12
UJA
1501
9 Su
rge
Line
Are
a 54
4.71
217.
2521
8.10
217.
6321
6.32
218.
7722
6.45
UJA
1502
0 Ac
cess
to T
rans
fer T
ube
Com
partm
ent
219
.61
87.5
987
.93
87.7
487
.21
88.2
091
.30
DRAF
TT5.
345.
34
T35
.34
35.3
4
T31
.90
31.8
FFTFFTFFT AFFTAFFAAF RAAFRAARAARARA DRDR
op 1
op
1
DRop
2
op 2
DD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
21 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
1502
1 Tr
ansf
er T
ube
Com
partm
ent
UJA
1502
3 In
stru
men
tatio
n La
nces
Sto
rage
R
oom
U
JA15
024
Acce
ss to
Rea
ctor
Cav
ity
55.9
822
.33
22.4
122
.37
22.2
322
.48
23.2
7 U
JA15
025
FAL
(FPP
S) R
oom
15
8.24
63.1
163
.36
63.2
262
.84
63.5
565
.78
UJA
1502
6 H
VAC
U
JA15
027
HVA
C
UJA
1800
1 R
eact
or C
avity
U
JA18
002
JEB1
0 Pu
mp
(RC
P) R
oom
U
JA18
003
JEA1
0 (S
G) R
oom
U
JA18
004
JEA2
0 (S
G) R
oom
U
JA18
005
JEB2
0 Pu
mp
(RC
P) R
oom
U
JA18
006
JEB3
0 Pu
mp
(RC
P) R
oom
U
JA18
007
JEA3
0 (S
G) R
oom
U
JA18
008
JEA4
0 (S
G) R
oom
U
JA18
009
JEB4
0 Pu
mp
(RC
P) R
oom
U
JA18
010
Sout
h St
airc
ase
UJA
1801
1 N
orth
Sta
ircas
e U
JA18
012
Elev
ator
UJA
1801
3 JN
G13
(LH
SI) T
ank
& Lo
op 1
An
nula
r Are
a
UJA
1801
4 JN
G23
(LH
SI) T
ank
& Lo
op 2
An
nula
r Are
a
UJA
1801
5 JN
G33
(LH
SI) T
ank
& Lo
op 3
An
nula
r Are
a
UJA
1801
6 JN
G43
(LH
SI) T
ank
& Lo
op 4
An
nula
r Are
a U
JA18
017
Cor
e In
tern
als
Stor
age
Roo
m
UJA
1801
8 Sp
ray
Line
s Ar
ea
544.
7121
7.25
218.
1021
7.63
216.
3221
8.77
226.
45U
JA18
019
Surg
e Li
ne A
rea
544.
7121
7.25
218.
1021
7.63
216.
3221
8.77
226.
45U
JA18
020
Cor
ridor
11
7.34
46.8
046
.98
46.8
846
.60
47.1
348
.78
UJA
1802
1 Tr
ansf
er T
ube
Com
partm
ent
DRAF
TT2.
412.
41
T63
.36
63.3
6
TFTFFTFFTFFT AFFTAFFAAF RAAFRAARAARARA DRDR
op 1
op
1
DRop
2
op 2
DD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
22 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
1802
3 In
stru
men
tatio
n La
nces
Sto
rage
R
oom
U
JA18
026
HVA
C
UJA
1802
7 H
VAC
U
JA23
001
Rea
ctor
Cav
ity
767.
5430
6.12
307.
3230
6.66
304.
8130
8.26
319.
09
UJA
2300
2 JE
B10
Pum
p (R
CP)
Roo
m
442.
4417
6.46
177.
1517
6.77
175.
7017
7.69
183.
93
UJA
2300
3 JE
A10
(SG
) Roo
m
UJA
2300
4 JE
A20
(SG
) Roo
m
UJA
2300
5 JE
B20
Pum
p (R
CP)
Roo
m
UJA
2300
6 JE
B30
Pum
p (R
CP)
Roo
m
UJA
2300
7 JE
A30
(SG
) Roo
m
UJA
2300
8 JE
A40
(SG
) Roo
m
UJA
2300
9 JE
B40
Pum
p (R
CP)
Roo
m
442.
4417
6.46
177.
1517
6.77
175.
7017
7.69
183.
93U
JA23
010
Sout
h St
airc
ase
UJA
2301
1 N
orth
Sta
ircas
e U
JA23
012
Elev
ator
UJA
2301
3 JN
G13
(LH
SI) T
ank
& Lo
op 1
An
nula
r Are
a 15
04.9
460
0.22
602.
5860
1.27
597.
6460
4.42
625.
64
UJA
2301
4 JN
G23
(LH
SI) T
ank
& Lo
op 2
An
nula
r Are
a 15
59.8
462
2.12
624.
5662
3.20
619.
4462
6.47
648.
47
UJA
2301
5 JN
G33
(LH
SI) T
ank
& Lo
op 3
An
nula
r Are
a 16
52.4
265
9.04
661.
6366
0.19
656.
2166
3.65
686.
96
UJA
2301
6 JN
G43
(LH
SI) T
ank
& Lo
op 4
An
nula
r Are
a 16
34.1
265
1.74
654.
3065
2.88
648.
9465
6.30
679.
35U
JA23
017
HVA
C
831.
0533
1.45
332.
7533
2.03
330.
0333
3.77
345.
49U
JA23
018
HVA
C
348.
7813
9.11
139.
6513
9.35
138.
5114
0.08
145.
00U
JA23
019
JEF1
0 (R
CS)
Pre
ssur
izer
Roo
m
540.
4021
5.53
216.
3821
5.91
214.
6021
7.04
224.
66U
JA23
020
FAL
(FPP
S) V
alve
Roo
m
103.
3441
.22
41.3
841
.29
41.0
441
.50
42.9
6 U
JA23
021
Tran
sfer
Tub
e C
ompa
rtmen
t
UJA
2302
3 In
stru
men
tatio
n La
nces
Sto
rage
R
oom
U
JA23
026
HVA
C D
uct
49.5
219
.75
19.8
319
.78
19.6
719
.89
20.5
9
DRAF
TTT30
7.32
307.
323 T
177.
1517
7.15
176
FTFFTFFTFFT AFFTAFFAAF
4417
6.46
76.4
61717
RAAFRAARAARA
1504
.94
1504
.96060
DRA
2 2 15
59.8
415
59.8
4 DRoo
p 3
oop
1652
16 D44
DD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
23 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
2302
7 H
VAC
Duc
t 49
.52
19.7
519
.83
19.7
819
.67
19.8
920
.59
U
JA23
031
FAL
(FPP
S) P
ump
Roo
m
93.6
637
.35
37.5
037
.42
37.1
937
.62
38.9
4
UJA
2304
1 In
stru
men
tatio
n M
easu
ring
Tabl
e R
oom
17
1.16
68.2
668
.53
68.3
867
.97
68.7
471
.16
UJA
2304
2 In
stru
men
tatio
n M
easu
ring
Cab
inet
s R
oom
27
3.43
109.
0510
9.48
109.
2410
8.58
109.
8211
3.67
U
JA29
003
JEA1
0 (S
G) R
oom
U
JA29
004
JEA2
0 (S
G) R
oom
U
JA29
005
JEB2
0 Pu
mp
(RC
P) R
oom
U
JA29
006
JEB3
0 Pu
mp
(RC
P) R
oom
U
JA29
007
JEA3
0 (S
G) R
oom
U
JA29
008
JEA4
0 (S
G) R
oom
U
JA29
011
Nor
th S
tairc
ase
UJA
2901
2 El
evat
or
UJA
2901
3 Se
tdow
n Ar
ea, O
pera
ting
floor
U
JA29
014
Annu
lar A
rea,
240
-0 D
eg
2025
.97
808.
0281
1.20
809.
4480
4.55
813.
6884
2.25
UJA
2901
5 An
nula
r Are
a, 0
-120
Deg
11
52.9
345
9.83
461.
6346
0.63
457.
8546
3.04
479.
30U
JA29
016
Acce
ss to
Equ
ipm
ent H
atch
U
JA29
018
Acce
ss to
Ope
ratin
g Fl
oor
659.
8926
3.19
264.
2226
3.65
262.
0626
5.03
274.
33U
JA29
019
JEF1
0 (R
CS)
Pre
ssur
izer
Roo
m
540.
4021
5.53
216.
3821
5.91
214.
6021
7.04
224.
66
UJA
2902
2 KL
A51/
52 C
ompr
esso
r & K
LA50
Fi
lter (
CBV
S) R
oom
62
7.60
250.
3125
1.29
250.
7524
9.23
252.
0626
0.91
UJA
2902
3 Ac
cess
to E
mer
genc
y Ai
rlock
58
7.77
234.
4223
5.34
234.
8323
3.42
236.
0624
4.35
UJA
2902
5 H
VAC
Sha
ft U
JA29
026
HVA
C S
haft
UJA
3400
3 JE
A10
(SG
) Roo
m
UJA
3400
4 JE
A20
(SG
) Roo
m
UJA
3400
5 JE
B20
Pum
p (R
CP)
Roo
m
UJA
3400
6 JE
B30
Pum
p (R
CP)
Roo
m
UJA
3400
7 JE
A30
(SG
) Roo
m
UJA
3400
8 JE
A40
(SG
) Roo
m
UJA
3401
1 N
orth
Sta
ircas
e 19
4.85
77.7
178
.02
77.8
577
.38
78.2
681
.00
DRAF
T8.
538.
53
T10
9.48
109.
4810
9
FTFFTFFTFFT AFFTAFFAAF RAAFRAARAA
2025
.97
2025
.97
808.
0280
8 RA11
52.9
32.
9345
9.45
9. RA DDR659.
8965
9. DRr R
oom
54
0.40
r Roo
m
540.
40 DR&
KLA5
0 &
KL62
7.60
627.
60 Dk
5k
5 DDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
24 o
f 40
Roo
m
Des
crip
tion
Cei
ling
Are
a (ft
2 )
Mas
s at
29
sec
(lb
)
Mas
s at
60
sec
(lb
)
Mas
s at
60
0 se
c (lb
)
Mas
s at
36
00 s
ec
(lb)
Mas
s at
12
304
sec
(lb)
Mas
s at
40
122
sec
(lb)
UJA
3401
2 El
evat
or
60.2
824
.04
24.1
424
.08
23.9
424
.21
25.0
6 U
JA34
013
Setd
own
Area
, Ope
ratin
g flo
or
UJA
3401
4 An
nula
r Are
a, 2
40-0
Deg
U
JA34
015
Annu
lar A
rea,
0-1
20 D
eg
1596
.44
636.
7163
9.22
637.
8363
3.98
641.
1766
3.68
UJA
3401
8 R
PV C
losu
re H
ead
Stor
age
Area
UJA
3401
9 Pr
essu
rizer
Hea
d &
Safe
ty R
elie
f Va
lves
Roo
m
540.
4021
5.53
216.
3821
5.91
214.
6021
7.04
224.
66U
JA34
022
JEG
(RPS
) Val
ve R
oom
22
3.91
89.3
089
.65
89.4
688
.92
89.9
393
.09
UJA
3402
5 H
VAC
Sha
ft U
JA34
026
HVA
C S
haft
UJA
4100
3 JE
A10
(SG
) Roo
m
UJA
4100
4 JE
A20
(SG
) Roo
m
UJA
4100
7 JE
A30
(SG
) Roo
m
UJA
4100
8 JE
A40
(SG
) Roo
m
UJA
4101
3 Se
tdow
n Ar
ea, O
pera
ting
floor
U
JA41
014
Annu
lar A
rea,
240
-0 D
eg
UJA
4101
5 An
nula
r Are
a, 0
-120
Deg
U
JA40
001
Dom
e 16
095.
7764
19.5
364
44.7
764
30.7
663
91.9
664
64.4
366
91.4
5
To
tal
2609
4.59
26
197.
18
2614
0.24
25
982.
50
2627
7.10
27
199.
88
Not
e: T
able
cel
ls c
onta
inin
g no
info
rmat
ion
repr
esen
t roo
ms
with
no
ceilin
gs.
DRAF
TT9.
229.
22
TT21
6.38
215.
9
FFT3030
89.6
5898 FFTFFT AFF
TAFFAAF RAAFRAARAARARA
1609
5.77
1609
5.7
641
641
DRTota
lTo
26
DDDRRRDDDRRRRDo
info
rmat
ion
repr
eso
info
rmat
ion
rep
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
25 o
f 40
Tabl
e 06
.02.
02-7
2-5—
Wat
er R
etai
ned
in S
team
and
Dro
plet
Pha
se
Para
met
er
Dur
ing
Blo
wdo
wn
Dur
ing
Ref
ill/R
eflo
odD
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
re
Tim
e of
Pea
k IR
WST
Tem
pTi
me
of H
alf
Peak
Pr
essu
re
Initi
al P
ress
ure
(psi
a)
15.9
6 15
.96
15.9
6 15
.96
15.9
6 15
.96
Initi
al T
empe
ratu
re °F
(°R
) 86
(546
)86
(546
)86
(546
)86
(546
)86
(546
)86
(546
)Ti
me
(s)
29.1
8 60
.09
600.
10
3,60
0.11
12
304.
73
4012
2.71
Con
tain
men
t Pre
ssur
e,
(psi
a)
66.3
763
.44
65.1
569
.27
61.6
341
.97
Con
tain
men
t Sat
urat
ion
Tem
p, °F
(°R
) 25
7 (7
16)
259
(719
)27
5 (7
35)
279
(739
)26
9 (7
29)
232
(692
)
Con
tain
men
t Fre
e Vo
lum
e (ft
3 ) 2,
827,
498
2,82
7,49
82,
827,
498
2,82
7,49
82,
827,
498
2,82
7,49
8
Vapo
r Par
tial P
ress
ure
(psi
a)
45.4
442
.42
43.6
847
.67
40.3
221
.74
Vapo
r Den
sity
(lbm
/ft³)
0.10
730.
1006
0.10
340.
1122
0.09
590.
0538
Tota
l Ste
am M
ass
(lbm
) 30
3,39
128
4,44
629
2,36
331
7,24
527
1,15
715
2,11
9To
tal D
ropl
et M
ass
(lbm
) 39
,208
2,82
724
881
336
Tota
l Ste
am a
nd D
ropl
et
Mas
s (lb
m)
342,
599
287,
273
292,
611
317,
326
271,
190
152,
125
DRAF
TT0 0
3, TT5.
155.
156 TTTFT
275
(735
)27
5 (
279
(727
9 FTFTFTFT2,
827,
498
2,82
7,49
82 FTFTFT AF
T2.
42.42
43.6
843
.68 AAAFFFAF
0.10
06060.
1034
0.10
34 AAAFFA28
4,44
6629
2,36
292,
36 AAARA2,82
72 RARARARA
928
7,27
328
7,27
3 RARARARRRRRARR
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
26 o
f 40
Tabl
e 06
.02.
02-7
2-6—
Dep
th o
f Ret
aine
d W
ater
in A
nnul
ar R
egio
n
Para
met
er
Dur
ing
Blo
wdo
wn
Dur
ing
Ref
ill/R
eflo
odD
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
re
Tim
e of
Pea
k IR
WST
Tem
pTi
me
of H
alf
Peak
Pr
essu
re
Tim
e (s
) 29
.182
1260
.093
5260
0.10
3536
00.1
112
304.
7340
122.
71To
tal C
onde
nsat
e M
ass
(lbm
) 13
243.
2424
433.
6389
316.
4021
6150
.85
3924
31.2
160
6627
.63
Con
dens
atio
n R
ate
(lbm
/s)
446.
7930
8.17
70.1
533
.17
15.7
44.
65To
tal C
onde
nsat
e Vo
lum
e (ft
³) 23
1.00
425.
5215
56.8
537
76.2
268
26.0
810
416.
00C
onde
nsat
e Vo
lum
etric
Flo
w
(ft³/s
) 7.
795.
371.
220.
580.
270.
08W
eir H
eigh
t (ft)
0.
333
0.33
30.
333
0.33
30.
333
0.33
3W
eir W
idth
(ft)
20.0
020
.00
20.0
020
.00
20.0
020
.00
Cal
cula
ted
Dyn
amic
Hea
d (ft
) 0.
229
0.18
10.
069
0.04
20.
025
0.01
1Ar
ea o
f Low
er A
nnul
ar R
oom
s (ft
²) 84
07.3
684
07.3
684
07.3
684
07.3
684
07.3
684
07.3
6D
epth
of W
ater
(ft)
0.02
70.
051
0.18
50.
376
0.35
80.
345
DRAF
TTT1515
TTTT6.
856.
8537 TTTT
1.22
TTTFT0.
333
333 FTFTFTFT
20.0
020
.0 FTFTFT AFT
810.
069
0 AAAFFFAF84
07.3
67.
3684
07.3
684
07.3
6 AAAFFFAF0.
05151
0.1
0.1 AAARARARARA
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
27 o
f 40
Tabl
e 06
.02.
02-7
2-7—
Ret
aine
d W
ater
Dep
th o
n H
eavy
Flo
or
Para
met
er
Dur
ing
Blo
wdo
wn
Dur
ing
Ref
ill/R
eflo
odD
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
re
Tim
e of
Pea
k IR
WST
Tem
p Ti
me
of H
alf
Peak
Pr
essu
re
Tim
e (s
) 29
.182
1260
.093
5260
0.10
3536
00.1
112
304.
7340
122.
71Pr
essu
re in
Con
trol V
olum
e 10
, PR
10 (p
sia)
66
.45
63.4
965
.22
69.3
361
.68
42.0
2Li
quid
Den
sity
(lbm
/ft³)
57.3
357
.42
57.3
757
.24
57.4
958
.23
Tota
l Con
dens
ate
(lbm
) 60
76.4
211
210.
9340
981.
2199
176.
8918
0059
.94
2783
40.0
7C
onde
nsat
ion
Rat
e (lb
m/s
) 20
5.00
141.
4032
.19
15.2
27.
222.
13Av
erag
e Br
eak
Efflu
ent
Enth
alpy
, hav
e (Bt
u/lb
m)
339.
0325
6.73
613.
270.
000.
000.
00Ev
apor
atio
n En
thal
py, h
fg(B
tu/lb
m)
910.
8191
3.04
911.
7390
8.71
914.
4493
1.75
Satu
rate
d Li
quid
Ent
halp
y, h
f (B
tu/lb
m)
269.
2526
6.13
267.
9627
2.18
264.
1723
9.26
Brea
k Ef
fluen
t Qua
lity,
X
= (h
ave-
hf)/
hfg
0.08
-0.0
10.
380.
000.
000.
00Br
eak
Mas
s Fl
ow, M
b (lb
m/s
) 93
12.6
755
65.3
025
4.58
0.00
0.00
0.00
Liqu
id B
reak
Mas
s Fl
ow
(lbm
/s)
= M
b·(1-
X)
8599
.17
5565
.30
158.
160.
000.
000.
00Sa
fety
Inje
ctio
n M
ass
Flow
(lb
m/s
) 0.
000.
000.
0022
3.95
624.
7362
7.23
Tota
l Flo
w o
nto
Hea
vy F
loor
(lb
m/s
) 88
04.1
757
06.7
019
0.35
239.
1763
1.95
629.
37To
tal V
olum
etric
Flo
w (f
t³/s)
15
3.57
99.3
93.
324.
1810
.99
10.8
1W
eir H
eigh
t (ft)
0.
1667
0.16
670.
1667
0.16
670.
1667
0.16
67W
eir W
idth
(ft)
66.3
66.3
66.3
66.3
66.3
66.3
Dyn
amic
Hea
d H
eigh
t (ft)
0.
6188
0.48
510.
0599
0.06
960.
1290
0.12
76R
etai
ned
Wat
er D
epth
(ft)
0.78
550.
6518
0.22
660.
2363
0.29
570.
2943
DRAF
T2222
TT7.
377.
3757 TTTFT
0981
.21
0981
9917
6.8
99 FTFTFTFT32
.199
1
FTFTFTFT61
3.27
613.
2 FTFTFT AFT
13.0
40491
1.73
11.7
3 AAAFFFAF26
6.13
2626
77 AAAF RA-0.01-0 RARARARRA67
5565
.30
5565
.30 RRRARARA DRRA
8599
.17
8599
.17
5565
.355 DRDRDRDRRDRR
0.00
DRDRDRDR4.
174.
17
DDDDD77DDDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
28 o
f 40
Tabl
e 06
.02.
02-7
2-8—
Dep
th o
f Wat
er b
ehin
d D
oors
and
Cur
bs
Dep
th o
f Ret
aine
d W
ater
(ft)
at T
ime
Roo
m
Floo
r Are
a (ft
²) 29
s
60 s
60
0 s
3600
s
1230
4 s
4012
2 s
UJA
0400
5 10
3.33
0.05
250
0.09
671
0.35
383
0.85
823
1.55
138
2.36
728
UJA
0400
6 10
3.33
0.05
046
0.09
294
0.34
005
0.82
480
1.49
096
2.27
507
UJA
0401
2 40
.90
0.09
946
0.18
322
0.67
034
1.62
595
2.93
915
4.48
488
UJA
1101
0 82
.88
0.04
229
0.07
789
0.01
610
0.00
361
0.00
081
0.00
007
UJA
1501
1 18
8.37
0.03
147
0.05
797
0.04
605
0.01
034
0.00
231
0.00
020
UJA
1502
0 21
9.58
0.01
132
0.02
085
0.00
810
0.00
182
0.00
041
0.00
003
UJA
2902
5 38
.75
0.02
406
0.04
432
0.16
213
0.39
326
0.71
088
1.08
475
UJA
2902
6 38
.75
0.02
406
0.04
432
0.16
213
0.39
326
0.71
088
1.08
475
UJA
3401
8 70
5.04
0.00
325
0.00
598
0.02
188
0.05
306
0.09
592
0.14
636
DRAF
T05
98
FT0.
1621
30
0.39
0.3 FT44
TTT61
061
00 TTTT
0460
504
605
0.01 TTTT
0.00
810
0.0
0.00
18 TTTFTFTFTFTFFT22
0.16
213
162
0.0 FFFTFTFTFFT0.
0218
80.
02 FFFTFTFT AFAFAFAFFTFF
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
29 o
f 40
Tabl
e 06
.02.
02-7
2-9—
Tota
l Mas
s of
Wat
er R
etai
ned
on F
loor
s
Ret
aine
d W
ater
on
Hea
vy F
loor
D
urin
g B
low
dow
n D
urin
g R
efill
/Ref
lood
D
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
reTi
me
of P
eak
IRW
ST T
emp
Tim
e of
Hal
f Pe
ak P
ress
ure
Pres
sure
, (ps
ia)
66.4
5 63
.49
65.2
2 69
.33
61.6
8 42
.02
Liqu
id D
ensi
ty (l
bm/ft
³) 57
.33
57.4
2 57
.37
57.2
4 57
.49
58.2
3 R
oom
N
ame
Floo
r Are
a (ft
²) M
ass
@ 2
9sM
ass
@ 6
0s
Mas
s @
60
0s
Mas
s @
3,6
00s
Mas
s @
12
,307
s M
ass
@ 4
0,12
2s
UJA
1100
2 71
0.5
31,9
9526
,592
9,23
89,
609
12,0
7712
,177
UJA
1100
3 73
7.4
33,2
0727
,599
9,58
89,
972
12,5
3412
,638
UJA
1100
4 73
7.4
33,2
0727
,599
9,58
89,
972
12,5
3412
,638
UJA
1100
5 62
8.7
28,3
1223
,530
8,17
48,
502
10,6
8610
,775
UJA
1100
6 61
7.9
27,8
2523
,126
8,03
48,
356
10,5
0310
,590
UJA
1100
7 73
7.4
33,2
0727
,599
9,58
89,
972
12,5
3412
,638
UJA
1100
8 73
7.4
33,2
0727
,599
9,58
89,
972
12,5
3412
,638
UJA
1100
9 77
2.9
34,8
0528
,927
10,0
4910
,452
13,1
3713
,246
UJA
1101
8 64
1.6
28,8
9324
,013
8,34
28,
677
10,9
0610
,996
UJA
1101
9 47
2.6
21,2
8217
,688
6,14
56,
391
8,03
38,
100
Subt
otal
(lbm
)30
5,94
025
4,27
288
,332
91,8
7711
5,47
811
6,43
6R
etai
ned
Wat
er in
the
Ann
ular
Are
a D
urin
g B
low
dow
n D
urin
g R
efill
/Ref
lood
D
urin
g Po
st
Ref
lood
Ti
me
of P
eak
Con
t. Pr
essu
reTi
me
of P
eak
IRW
ST T
emp
Tim
e of
Hal
f Pe
ak P
ress
ure
Liqu
id D
ensi
ty (l
bm/ft
³) 57
.33
57.4
257
.37
57.2
457
.49
58.2
4D
epth
of W
ater
(ft)
0.02
70.
051
0.18
50.
376
0.35
80.
345
Roo
m
Nam
e Fl
oor A
rea
(ft²)
Mas
s @
29s
Mas
s @
60s
M
ass
@
600s
M
ass
@ 3
,600
sM
ass
@
12,3
07s
Mas
s @
40,
122s
Low
er A
nnul
ar R
oom
s w
ith W
eir
UJA
0701
3 11
14.1
1,75
53,
238
11,8
3623
,960
22,9
4622
,366
UJA
0701
4 20
543,
235
5,96
921
,821
44,1
7342
,304
41,2
36U
JA07
015
2090
.63,
293
6,07
622
,210
44,9
6043
,057
41,9
71U
JA07
016
2090
.63,
293
6,07
622
,210
44,9
6043
,057
41,9
71U
JA07
018
1058
.11,
667
3,07
511
,241
22,7
5521
,792
21,2
42
DRAF
T9.
339.
3357
.24
57.2
Mas
s @
3,
Mas
TFT9,
238
9,23
9,60
FTFTFTFT9,
588
99
FT9,
58888 FT
8,17
48,
174 AF
T2626
8,03
48,
03 AF,5
99999,
588
588 AF
27,5
9999,
588
9,58
8
RAF
28,9
2728
10,0
40
04
RA24,0
1324
,08
RA17,6887,6 RA254,272254,272 RARARA DRA
Ret
aine
d W
ater
inta
ined
Wat
er in
DDDRRRng
ng
do
wn
dow
Dur
ing
urin
gR
efill
/Ref
loo
Ref
ill/R
eflo DDDRDD
57.3
357
.5 DDDRD
0.02
70.
027
D9s9s
Mas
Mas DDDDDD
AR
EV
A N
P In
c.
Res
pons
e to
Req
uest
for A
dditi
onal
Info
rmat
ion
No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
ign
Cer
tific
atio
n A
pplic
atio
n P
age
30 o
f 40
Oth
er A
nnul
ar R
oom
s w
ith a
Con
stan
t Uni
form
Dep
th o
f ½ in
ch
UJA
1102
0 10
33.4
2,48
82,
492
2,49
02,
484
2,49
52,
528
UJA
1501
3 14
86.6
3,58
03,
585
3,58
23,
574
3,59
03,
636
UJA
1501
4 15
50.2
3,73
33,
739
3,73
53,
727
3,74
33,
792
UJA
1501
5 16
50.3
3,97
43,
980
3,97
63,
967
3,98
54,
037
UJA
1501
6 18
94.6
4,56
24,
569
4,56
54,
555
4,57
54,
634
UJA
2901
3 44
24.3
10,6
5310
,670
10,6
6110
,636
10,6
8310
,822
UJA
2901
4 20
264,
878
4,88
64,
882
4,87
14,
892
4,95
6U
JA29
015
1152
.92,
776
2,78
02,
778
2,77
22,
784
2,82
0U
JA29
016
3217
.77,
748
7,76
07,
753
7,73
67,
769
7,87
1U
JA29
018
659.
91,
589
1,59
11,
590
1,58
61,
593
1,61
4U
JA29
022
627.
61,
511
1,51
41,
512
1,50
91,
515
1,53
5U
JA29
023
587.
81,
415
1,41
81,
416
1,41
31,
419
1,43
8U
JA34
014
964.
52,
322
2,32
62,
324
2,31
92,
329
2,35
9U
JA34
015
2292
.95,
521
5,53
05,
525
5,51
25,
536
5,60
9U
JA11
013
1556
.63,
748
3,75
43,
751
3,74
23,
759
3,80
8U
JA11
014
1053
.92,
538
2,54
22,
539
2,53
42,
545
2,57
8U
JA11
015
1191
.72,
869
2,87
42,
871
2,86
52,
877
2,91
5U
JA11
016
1599
.73,
852
3,85
83,
855
3,84
63,
863
3,91
3Su
btot
al (l
bm)
83,0
0094
,300
159,
123
250,
456
243,
108
239,
650
Ret
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d W
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Beh
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Doo
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Dur
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Dur
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ty (l
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a (ft
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3329
955
12,
016
4,87
98,
857
13,6
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40.9
023
343
01,
573
3,80
76,
911
10,6
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82.8
820
137
177
174
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188.
3734
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020
219.
5814
226
310
223
50
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2902
5 38
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5399
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1,58
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1,58
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877
82,
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416 FT
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324
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53030
5,52
55,
525 AF
3,75
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3,75
1
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2,54
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No.
434
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U
.S. E
PR
Des
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In
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Req
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No.
434
, Sup
plem
ent 2
U
.S. E
PR
Des
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Cer
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32 o
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Tabl
e 06
.02.
02-7
2-10
—To
tal M
ass
of R
etai
ned
Wat
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Rea
ctor
Bui
ldin
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Dur
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Tim
e (s
) 29
6060
03,
600
12,3
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,123
Stea
m P
hase
(lbm
) 30
3,39
128
4,44
629
2,36
331
7,24
527
1,15
715
2,11
9D
ropl
ets
(lbm
) 39
,208
2,82
724
881
336
Wal
l Con
dens
ate
(lbm
) 29
,939
29,4
6121
,626
16,3
1814
,799
14,6
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eilin
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onde
nsat
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m)
26,0
9526
,197
26,1
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,983
26,2
7727
,200
Ret
entio
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RB
Floo
rs (l
bm)
429,
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387,
011
280,
965
396,
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726
446,
178
Ret
entio
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Clo
gged
Bas
ket
(lbm
) 68
,064
68,0
6468
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68,0
6468
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68,0
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e-in
ject
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to R
CS
(lbm
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,270
134,
409
363,
825
363,
825
363,
825
363,
825
Tota
l Mas
s of
Ret
aine
d (l
bm)
961,
742
932,
415
1,05
3,23
11,
187,
662
1,17
3,88
11,
071,
996
DRAF
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TT24
824
8
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21,6
216 TTTFT
26,1
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25,9
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0,96
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0,96
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68,0
6468
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363,
8 AAAFFFAF93
2,41
5,4
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3,23
1 AAAFFFAAAAFF
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 33 of 40
Question 06.02.02-73:
ANP-10293 Rev. 1 Figures E.6-2, E.6-4 includes a note indicating basket head change due to flume water evaporation. Given that testing employed water level management controls (make-up and letdown); it is not clear why evaporation was a factor. Explain the reasons behind AREVAs conclusion that the head loss change was related to evaporation and not other causes. In the response, include any other test impacts or test observations associated with evaporation.
Response to Question 06.02.02-73:
The note indicating basket head change due to flume water evaporation was intended to explain the increase in measured retaining basket head loss between hours 33.9 and 37.4 during the Design Basis Debris Loaded Strainer Head Loss Test (Test 2) and hours 14.1 and 23.7 during the Thin Bed Test (Test 4). ANP-10293, Revision 1 shows the measured increases graphed in Figures E.6-2 and E.6-4 for Test 2 and Test 4, respectively.
The water management system consisted of two parts; water removal and water addition. As wetted debris was added to the flume, the volume of water within the flume increased. To maintain the prototypical strainer submergence, an overflow weir removed excess water from the flume.
The water addition system used a makeup water tank to add water to the test flume as required. As debris was inserted into the retaining basket, a debris bed formed on the retaining basket screen. This debris bed caused the water level in the retaining basket to increase above the water level downstream of the basket (surrounding the strainer). The water volume increase within the retaining basket reduced the water volume downstream of the retaining basket. As the volume of water downstream of the retaining basket decreased below prototypical levels, power was applied to the makeup water pump to add water to the flume downstream of the retaining basket.
Debris plugged the entire retaining basket screen during Test 2 and Test 4 creating an overflow condition within the retaining basket. The water addition system performed adequately during the debris addition portions of the test. After overflow, debris addition (and associated water volume) continued until all required debris constituents were applied to the flume and water addition was no longer necessary. The additional volume of debris laden water increased the water level to the prototypical strainer submergence level (at the overflow weir). The measured differential pressure (elevation head) across the retaining basket after the last debris addition to the test flume was approximately 7.3 feet during Test 2 and Test 4.
After all debris was added to the flume, the flume water was recirculated to observe changes in the measured strainer head loss created by debris addition until test termination criterion was met. During this period of approximately 3.5 hours, the 120°F water began to evaporate to the environment outside of the test flume. Because the water recirculates into the plugged retaining basket, the volume of water in the retaining basket remained unchanged. However, the volume of water downstream of the retaining basket began to slowly decrease. The measured head loss of the retaining basket 3.5 hours after all debris was inserted into the flume was approximately 7.4 feet for both Test 2 and Test 4. The increase in measured differential pressure across the retaining basket from approximately 7.3 feet to approximately 7.4 feet was not created by water increase within the retaining basket because the basket was already in an
DRAFT
and hoand he measurehe m
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e makeup water pump te makeup wat
entire retaining baskentire retaining etaining basket. etaining baske
ons of the ons of the requirequi
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 34 of 40
overflow condition. The increase in measured differential pressure across the retaining basket was created by the change in measured elevation head as the water in the vicinity of the strainer decreased by approximately 0.1 feet within the 3.5 hour period. Test 4 was continued 9.6 hours (overnight) after all debris was added to the test flume and the water addition system disabled after the basket overflow condition was reached. The final measured retaining basket head loss was approximately 7.7 feet due to evaporation; this was visually confirmed by the water level decrease in the vicinity of the test strainer. The decrease in strainer submergence was conservative and evaporation was not a factor to the test conclusions, merely an observation of the data.
FSAR Impact
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFT
oo
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 35 of 40
Question 06.02.02-74:
The U.S. EPR debris generation analysis uses a 2.4D zone-of-influence (ZOI) for assessing the amount of fiber insulation generated during the accident. This ZOI is for steel jacketed Nukon (fiber insulation) with Sure-Hold bands based on NEI 04-07 GR and NRC SE Table 3-2. The 2.4D ZOI was derived from testing for a specific insulation system. Therefore, in order to apply the 2.4D ZOI, the U.S. EPR fiber insulation system, fasteners, and associated components should be of a design that is equivalent or more robust than the tested Sure-Hold system (the BWROGs air jet impact testing is described in Volume 3 of the BWROGs Utility Resolution Guidance). Important design features of the testing include band spacing, pipe diameter, band fasteners, band width, jacket overlap (axial and circumferential), jacket material and thickness, etc. The staff requests that AREVA evaluate if their design specific application of the 2.4D ZOI is bounded by existing testing, with specific consideration given to differences in pipe diameters between the test and U.S. EPR design and minimum radius requirements for the fasteners. For those piping applications that are not bounded, the staff request that AREVA provide additional analysis or ITAAC to support the debris generation analysis (fiber insulation source term derived by application of a 2.4D ZOI). In addition, to assess the sensitivity of the U.S. EPR source term to the ZOI size, assuming that the 2.4D ZOI was increased to 17D (as listed in the NRC SE value corresponding to unjacketed Nukon or jacketed Nukon with standard bands), estimate how much additional fibrous insulation debris would be generated using break locations listed in ANP-10293 Rev. 1 Appendix C.
Response to Question 06.02.02-74:
The U.S. EPR debris generation calculation was revised to modify the debris source term. The revision changed the insulation of piping less than four inches in diameter from NUKON® jacketed with Sure-Hold® bands to Reflective Metal Insulation (RMI). The U.S. EPR design no longer incorporates NUKON® insulation on piping subject to loss of coolant accident (LOCA) jet blast effects. This change will be incorporated into Revision 3 of Technical Report ANP-10293, “U.S. EPR™ Design Features to Address GSI-191,” which is scheduled to be submitted by March 31, 2011.
FSAR Impact
The U.S. EPR FSAR will not be changed as a result of this question. DRAFT
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 36 of 40
Question 06.02.02-76:
Follow-up to RAI 111, Question 06.02.02-8:
In the Supplement 10 response to RAI 111, Question -6.02.02-8K6, AREVA indicated that fluid from a pressurizer surge line break reaches the pressurizer relief tank (PRT) room and is released through a door separating the PRT room and steam generator blowdown (SGBD) room. Flooding berms, associated with SGBD room doors and doorways, are mentioned as design features that prevent flooding of the annular space and serve to contain the fluids within the SGBD and PRT rooms. Also, wall openings are provided at four locations to route fluid out of the SGBD room and into the loop areas of the heavy floor.
Given that four openings are now provided to connect the SGBD room to the loop area heavy floor, describe the impact during a large break LOCA where fluid spills onto the loop area heavy floor. Will fluid from a break in the loop area flood the SGBD and PRT rooms? How is this volume considered in the water hold-up analysis? Describe the design of the four SGBD room wall openings and any devices installed at the opening that are required to actuate to permit/block fluid flow to/fm the loop area of the heavy floor through these openings. Also, describe how floor openings, wall openings, berms and doors permit fluid and debris, generated during a break near the pressurizer, to flow into and out of the PRT room and SGBD room (include assessment of break selection, debris generation, debris transport and upstream effects (water hold up or choke points) and provide details of debris types and quantities evaluated). In addition, provide a simple figure or discussion about where and how water is held up and how high a level is reached in the PRT and SGBD rooms in response to a pressurizer surge line break and a break in the loop area. Discuss height of curbs, openings, and flooding berms, and how doors are used to either release or contain water. A discussion of these important design features to address GSI-191 is expected to be included in technical report ANP-10293 or an appropriate FSAR Section.
Response to Question 06.02.02-76:
Wall openings are provided in the SGBD room walls at four locations, two in each wall to route the surge line break fluid out of the SGBD tank room and onto the heavy floor. During a large break loss of coolant accident (LBLOCA), water may flow from the heavy floor into the SGBD and PRT rooms. In the water retention analysis the SGBD and PRT rooms (UJA11018 and UJA11019) are considered to be flooded at the same depth as the heavy floor.
The four openings between the SGBD and PRT rooms and the loop areas are free openings (0.618ft² each). The minimum opening height from the floor for each 0.618 ft² opening is approximately 1.05 ft. There are no devices contained in the openings, therefore, bidirectional flow is allowable. A 20 inch (1.67 ft) high berm around the SGBD system tank will prevent flooding into the compartment below from occurring. The two doors leading into the annular regions from room UJA11018 will also contain a flooding berm of at least 20 inches (1.67 ft) high to preclude flooding into the annular area.
Debris generation is limited to reflective metallic insulation (RMI) and latent debris. There is no fibrous insulation used in the zones of influence in the containment of the U.S. EPR design. The maximum level of flooding on the heavy floor and the floors of the SGBD and PRT rooms in the water retention analysis is 0.7855 ft, which occurs during blowdown of a
DRAFT
id spillid spand PRT roand
be the design of tbe the desthat are required to athat are require
vy floor through these ovy floor through thess and doors permit fluids and doors permit fluid
and out of the PRT roond out of theris generation, debris traration,
d provide details of deb provide details ofe figure or discussion abure or discussion a
n the PRT and SGBD roRT and SGBD re loop area. Discuss hee loop area. Discu
to either release or con to either release oaddress GSI-191 is expaddress GSI-191 is ex
ppropriate FSAR Sectioopriate FSAR Sectio
on 06.02.02-76: on 06.02.02-76:
provided in the SGBDprovided in the Suid out of the Suid out of the
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AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 37 of 40
LBLOCA. The flooding level for a pressurizer surge line break was not evaluated as the LBLOCA, which is more limiting for water retention. The maximum level of water retention (0.7855 ft) is lower than the level of berms (1.67 ft); thus, no water will flood out to the annular space or to the room below the SGBD tank room. Operation of the doors in the SGBD tank room is also not needed to release or contain the water level as the flooding level 0.7855 ft from the LBLOCA is below the 1.67 ft height of the berms at each door. Additional information on the wall openings will be provided in Revision 3 of Technical Report ANP-10293, “U.S. EPR™ Design Features to Address GSI-191,” which is scheduled to be submitted by March 31, 2011.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question. stion.stion
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 38 of 40
Question 06.02.02-78:
Provide the density of latent particulate material and justify its selection in comparison with guidance
Response to Question 06.02.02-78:
The U.S. EPR strainer testing used latent particulate debris prepared by Performance Contracting Incorporated (PCI). PCI formulated their surrogate based on guidance provided by NEI 04-07, Volume 2 and NUREG/CR-6877. Section 3.5.2.3 in Volume 1 of NEI 04-07 recommends the use of 10 µm diameter grains as the debris characteristic for latent particulate debris. Volume 2 of NEI 04-07 considers the 10 µm diameter assumption as conservative and provides additional guidance in Appendix V to determine appropriate parameters for a mix of multiple fiber and particulate components. Section V.2.2 in Volume 2 of NEI 04-07 states that “plant debris characteristics pertinent to the specification of a recipe to create a suitable latent particulate surrogate include specific gravity and particulate-size distribution.” Section V.2.2 also states that debris characteristics were determined by the Los Alamos National Laboratory (LANL) report LA-UR-04-3970 2004a, which was published in July 2005 as NUREG/CR-6877.
NUREG/CR-6877 analyzed latent samples of five volunteer pressurized water reactor (PWR) plants and included the properties of material composition and hydraulic flow properties. These characteristic properties were analyzed by LANL and provided a surrogate latent particulate debris recipe for use in head-loss testing performed at the University of New Mexico (UNM). NUREG/CR-6877 guidance for surrogate latent particulate mass distribution was: 27.7 percent of debris between 500 µm and 2 mm, 35.2 percent of debris between 75 µm and 500 µm, and 37.1 percent less than 75 µm. Though some of the volunteer plant debris included materials larger than 2 mm, NUREG/CR-6877 removed this constituent and renormalized the distribution amongst the smaller particulates because visual inspection showed that material larger than 2 mm had very limited transport potential. The surrogate latent particulate distribution is again captured in Table V-2 in Volume 2 of NEI 04-07. The PCI latent particulate debris distribution used for testing was: approximately 27.3 percent of debris between 500 µm and 2 mm, approximately 35.3 percent of debris between 75 µm and 500 µm, and approximately 37.4 percent less than 75 µm as specified in PCI’s proprietary technical document, “Sure Flow Suction Strainer - Testing Debris Preparation and Surrogates” (ADAMS Accession No. ML090900476).
Page 3-37 in Volume 1 of NEI 04-07 recommends 100 lbm/ft3 as the particle density for latent particulate debris. This density was derived by the densities of “Earth,” dry and packed and “Sand.” Page 51 in Volume 2 of NEI 04-07 provides guidance to “assume that latent particulates are primarily geophysical in origin being composed of soil, sand, and dust.” Volume 2 of NEI 04-07 provides additional guidance to assume that latent particulate material has a nominal density of 2.7 g/cm3 (169 lbm/ft3). Page V-8 references the debris characteristic data provided by LANL as “well represented” with the specific gravity of 2.7 g/cm3 (an equivalent density of 169 lbm/ft3). Finally, bullet 8 on page V-11 in Volume 2 of NEI 04-07 summarizes particulate density by recommending 100 lb/ ft3 for the material density of latent particulate debris because this is conservative relative to the heavier densities (169 lbm/ft3) referenced in the LA-UR-04-3970 document. Actual plant analysis of particulate density was performed by LANL and documented in NUREG/CR-6877. The results of the LANL analyses showed that the particulate ranged in densities from 1.5 to 4.0 g/cm3 (93.6 to 249.7 lbm/ft3) with the median density of 2.7 g/cm3 (169 lbm/ft3). It is noted that the LANL data showed that the average
DRAFT
ume 2umea recipe to ca reci
te-size distributiote-size disby the Los Alamos Naby the Los Alam
blished in July 2005 as blished in July 2005
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Though some of the volThough some of thR-6877 removed this coR-6877 removed this c
ulates because visual intes because visual innsport potential. The sunsport potentia
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g Debris Pg Debris P
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 39 of 40
densities varied depending on debris size with the smaller debris being the densest and the largest debris being the least dense. NUREG/CR-6877 also determined that bulk densities of the latent particulate debris varied depending on the size distribution from 39 to 104 lbm/ft3specifying that the particulate recipe provided an approximate density between 63 to 75 lbm/ft3.
PCI provided the U.S. EPR test with a dirt and dust mix based on a size distribution that is similar to that provided by the guidance within NUREG/CR-6877. The density of the dirt and dust is related to the packing factor. Dirt and dust densities will vary; therefore, the size distribution and mass of tested surrogate dirt and dust are more justifiable for use during strainer qualification testing.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFT
estion. estion
AREVA NP Inc.
Response to Request for Additional Information No. 434, Supplement 2 U.S. EPR Design Certification Application Page 40 of 40
Question 06.02.02-79:
The retaining basket and strainer head loss testing for US EPR was designed to assess debris accumulation on the basket and strainer screens. During the July 2010 strainer test, after all the non-chemical particulate and fiber was added, the staff noted a potentially significant floating layer of fibrous debris, covering a large portion of the test tanks water surface. The staff was surprised by the amount of floating fibrous debris in the test. Based on observation, it appears that air bubbles generated by the impingement of the recirculation system jet and entrained in the water flow were interacting directly with debris to create floating masses.
The staff also noted that the test protocol and scaling were intended to conservatively or prototypically represent the fluid dynamic conditions at the screen and basket faces. The phenomena that are pertinent to debris floating do not appear to have been scaled conservatively or prototypically. For example, the test temperature was lower than in the plant, the debris concentrations were higher than in the plant, and the distances between the screens and the impingement of the recirculation jet were generally much shorter.
Therefore, the staff requests AREVA to evaluate the impact on strainer head loss if the floating fibrous debris had transported/accumulated on the strainer and address the following questions:
What are the principal phenomena that would contribute to debris floating? Were these phenomena modeled conservatively or prototypically in the test? Explain why it is acceptable for the test to permit floating as a debris removal mechanism given how the principal phenomena were scaled.
Response to Question 06.02.02-79:
The U.S. EPR test apparatus used several conservatisms to challenge the strainer design with regards to head loss. Throughout testing it has been observed that air bubbles generated by the impingement of the recirculation system jet entrain air into the flow of water. As the flow moves towards the strainer, tiny bubbles work their way to the surface, sometimes collecting fiber along the way. This is visually confirmed by the fact that fiber preparation removes air, yet there is air entrained within the fiber downstream of the retaining basket.
Air bubbles generated by the impingement of break flow from the heavy floor to the in-containment refueling water storage tank (IRWST) are prototypical; however, the flow towards the strainer was scaled slightly greater than plant conditions to enhance debris transport and prevent settling. To remedy any non-prototypical floating debris, floating debris will be documented with photographs, carefully removed with a filtering skimmer from the surface, and re-introduced into the test apparatus at an area downstream of the retaining basket. This process will be followed during future head-loss testing, and will be performed with extreme care to prevent any disturbances to strainer debris beds.
FSAR Impact:
The U.S. EPR FSAR will not be changed as a result of this question.
DRAFT
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