•~ 7•CA 4026917 - Review of QA-scope flow restricting devices at PBNP.

Following the October 2002 event with the ORO-04008 flow orifice associated with the OP-38B MDAFW Pump, PBNP conducted a review of all flow restricting devices that perform a QAscope function. During this event particles from the pumps discharge became lodged in the flow restrictor and limited the flow through the line to below what was normally seen. These flow restrictors use a multi-stage anti-cavitation trim package installed in the body of a globe valve to limit flow. This type of flow restrictor uses very small holes in each stage along with a torturous path to limit flow and reduce the affects of cavitation.

A printout of the CHAMPS database was used as a starting point to determine the population of QA-scope flow restrictors installed in the plant. Next, a review of the plants P&IDs was conducted to determine if any orifices were installed in Safety-Related systems that did not have CHAMPS Ids. Finally, a limited plant walkdown and interviews were conducted to come up with a total population of 61 components that function as flow restriction devices in QAscope applications (see attached Excel spreadsheet). Forty-eight of these are in safety-related applications.

The attached Excel spreadsheet also includes five components (1/2MS-279/283 and ORO-SA001). The MS components are actually valves; however, they have a similar trim design to that used in the AFW pump recirc flow restrictors. The ORO-SA-001 components is of a similar design to the AFW Pump recirc piping flow restrictors. These five valves are installed in nonQA-scope applications. While these components have experienced some plugging problems in the past, the fact that they perform no safety-related function results in these problems not challenging the plant's nuclear safety.

The Safety Injection System (HHSI, RHR, and CS) pumps all have flow restriction devices installed in their recirc lines; however, none are similar to that installed in the AFW pumps recirc lines. The HHSI pumps have multi-staged off-center orifice plates installed in their recirc lines; whereas, the RHR and CS pumps have capillary type (extended length small bore pipe) flow restrictors. These types of flow restrictors are not as susceptible to clogging as the anti-cavitation trim packages used in the AFW system. In addition, they pass primary system water as opposed to the CST and Service Water seen in the AFW system.

As can be seen in the attached Excel spreadsheet, PBNP also utilizes standard orifice plates in a large number of safety-related applications. These flow restrictors are not susceptible to small particle clogging like the trim sets installed in the AFW lines. The same is true for the large bore capillary tube style flow restrictors used at the PBNP. In addition, no capillary type flow restrictors were found installed in any safety-related applications that were not controlling primary system water flow.

The review of PBNP's flow restriction devices found only four applications (PBI/2 RO-04003, ORO-04008, and ORO-04015) where anti-cavitation trim packages were used in safety-related application. These are the flow restrictors installed in the recirc piping associated with the four AFW pumps (PBI/2 P-29 and OP-38A/B). None of the other safety-related flow restriction devices were found to have this same susceptibility to small particle clogging.

I~ •= mpe tJDE ' e,•.-. R &It:Lbcatlon- • .,:', I QAI SR - .' . ; ,,,,,'Equipment NamePB1 _RO-00198A PBi RO-0198B PB1 RO-00199A P61i RO-00199B iFBI RO-00498 P61 RO--045

F§1 RO.0048 PB1 RO-00487 VB• f F--.oo

Pgi R'O0:6900A PB1 RO-00900B P-1 IRO-00900C

FB i kO 6k 2 RO-00198A

PB2 RO-00198B PB2 RO-00199A i•b iR5o-099c PB2 RO-00199C

P__- RO-0O487 P8•2 RO-00488

I,- RO-00900A

Pi2 R- Oi60509 PB2 RO-00900D i01P2 RO-04003 P-0 RO-03362A

PB0 R6O-03363A

SRO-03363B IPB0 RO-03989A • R-O-03i9B9 WP60 RO-04008

PBO- RO-04015

'P.~ RO-02909

PB2 RO-04105 Pib0 IRO-01005A

PB0 IRO)-.ldOO6A PB0 'IO-01006B

Capillary (2) c.!!ary (2) capiar Capillary Capillary

.Orific Plate (2) Orifice Plate (2)

€_aPi!arY (2) C apillary (2) Orifice Plate Cap ilary (2 )~ Orifice Plate Capillary (1) .

Valve/rlrm/AdJ caprifi2lat Capillary (2)

Capillary CapIlary-__.

Orifice Plate (2) Orifice Plate (2) dap-ifary -~

Capi.ry (1)

Valve/Trini/Adj

Orifice Plate Orif.c Plae" Orifice Plate Orifice Plate Orifice Plate

Valve/Trim Valve/Trif l

Orifice Plate Orifice Plate Inline Orifice IVinve/Orifice Inline Orifice

inline Orifice

1684J741-3 (D6) 684J741-3 (D8)

684J741-3 (H6).

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11PE017-3(D.)_ M-217-1 (136). 685J175-3 (D6) 685J175-3 (D8)

8 J-H6L68J7- H6685.1175-3 IH6•541 F445-1 (B_3) .541F445.-.1 (D8)L

541F441.2(F5)_ 541 F4 45-2 (G5) 110E& 5-3 (G5)

11OE035-3 (cs) 1 1OEO35-3_6L) M-217-i GS)_ M-227-1 (D10)___ M-227-2 (HIe) ]m--2,-27-1 (H8)_

4M-219-3 (G5) M•• 29-3 (E5) IM.-217-1(E_) M.207-4 (G 9) M-2207-2AB 7LG7 684J972-1 (B6)_

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66/U2C

U2C/T-1 PZR CUB/UPPER LEVEL 8/PAB 8/PAB

B/PAB

B/CCB!AFP RM 2P-29 CUB 50/DGB/G-03 RADTR RM 50/DGB/G-04 RADTR RM 50/DGB/G-03 RADTR RM !50/DGB/G-04 RADTR RM 28/DGB/IG-03 DAY TK RM

28/GB/G44 FOTP/DAY TK RM 8/CB/AFP RM P-38A CUB 81CBIAFP RM P-38B CUB 26/PAB/CENTRAL 26/PABICENTRAL 46/PAB/WG COMP RM 4r6_AB/dNG COMP RM 461PABJ.1WG COMP RM 46/PAB/VG COMP RM

Y Y Y Y Y Y Y Y ,Y Y Y

Y Y

Y Y Vy Vy

Y Y Y Y .Y lY Y Y ly

Y Y Y Y Y

Y Y Y Y Y Y Y Y Y Y

NY P-lA RCP #1 SEAL BYPASS ORIFICE Y P-1B RCP #1 SEAL BYPASS ORIFICE

"YL LE TDO-0W/N OR- -ICFI dEX- F, OII C-E Y LETDOWN ORIFICE B ORIFICE

Y LETDOWN ORi•ICF C ORIFICE Y RC LOOP A COLD LEG RTD MANIFOLD ORIFICE Y jRC LOOP B COLD LEG RTD MANIFOLD ORIFICE Y R-1 RV-HEAD VENT FLOW ORIFICE

:Y 'T-1 PZR VEINT FLOW ORIFICE Y IP-14A CONT SPRAY PUMP FLOW ORIFICE

I'•' IP-I4A CONT SPRAY PUMP RECIRC ORIFICE !y " ' .. .. P-.146 CONT SPRAY PUMP FLOW ORIFICE

Y 'P-1•B CONT SPRAY PUIMP RECIRC ORIFICE Y 1P-29 AFP MINI RECIRC ORIFICE

IP-IA RCA #1 SEýAL BYPASS ORIFICE SP-I•B RCP #1 SEAL BYPASS ORIFICE lY iLETDOWN ORIFICE A ORIFICE

,Y LETDOWN ORIFICE B ORIFICE

JY I LETDOWN ORIFICE C ORIFICE Y!RC L'OOP A COLDI5L-EG-1T MANIFOLD ORIFICE

IY RC LOOP B COLD LEG RTD MANIFOLD ORIFICE ,Y R RV HEAD VENT FLOW ORIFICE ;Y "T-1 PZR VENT FLOW ORIFICE IY P-14A CONT SPRAY PUMP FLOW ORIFICE IY P-14A CONT SPRAY PUMP RECIRC ORIFICE ;Y P14B CONT SPRAY PUMP FLOW ORIFICE ;Y P-14B CONT SPRAY PUMP RECIRC ORIFICE ,Y 2P-29 APP MINI RECIRC ORIFICE Y G-03 EDG HX-265A RADIATOR VENT ORIFICE ,Y G-04 EDG HX-265B RADIATOR VENT ORIFICE 'Y G-03 EDG HX-266A LUBE OIL COOLER VENT ORIFICE "Y G-04"EDG HX-266B LUBE Oi[ COOLER VENT ORIFICE Y IT-176A G-03 EDG DAY TANK INLET ORIFICE

,Y T-1768 G-04 EDG DAY TANK INLET ORIFICE !Y" F8-8A AFP Ml-I"N RECIRC ORIFICE ;Y 1P-38B AFP MINI RECIRC ORIFICE :N ISW FROM HX-15A-D CONTVENT CLR MOV BYP ORIFICE N ISW FROM HX-1 5A-D CONT VENT CLR MOV BYP ORIFICE 'N- K l-A WG COMP SEAL WATER MAKEUP INBOARD FLOW ORIFICE N 'Kl-B WG COMP'SEAL WATER MAKEUP INBOARD FLOW ORIFICE 'N4 1KI-AWG COMP SEAL WATER MAKEUP FLOW ORIFICE 'N K-11B WG COMP SEAL WATER MAKEUP FLOW ORIFICE

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PBO RO-01009A

PBO RO-O0100B

PB0 RO-OIi04A

frBO RO-O1014B

PB0 RO-06306 PW U-nn-numib'eredP1 Un-nmbred PB1 Un-numbered P52 Un-_numbe-r• PB2 Un-numbered

0B2 U-nV6umbered

PB1 MS-00279 PB2 MS-00279 P82- iS-0028...

PB0 RO-SA-O01 P81 Z-275A

PB1 Z-275B P62 Z-275A Pa2 Z_-27B

- qNot e (1)

Orifice Plate Orifice Plate rfic Plate Orifice Plate

6rifice Plate Orifice Plate

C api'!ry (1)

Capillary (I)

52ý0p-ry 0) Staged Orif (1) SFaged Orif (1) Staged Orif (1) ,a3gg-iif (0)

Valve/Trim/AdI Valve/TiM/AI Qave/TrIm/Adj

Valv-e/Trimayjd] _ TjaFed" Cap (1) Tapered Cap (1) TapereA Cap (!) Tapered Cap (1)

Radiograph of

0684,1972-1G6) 684J972:1 (B_6) ..684J972-.1_(G)_

I684J9721 (B66 --. 1684J972- (H6) 1684J972-1 (C6)

M-209-3 (F8)

110EO18-1_ (138)

110E029-1 (C8) 110E029-1 (B8 110E017-2 (F8)

1110E017-2 (E8)

M-201-3 (F5)

M-2013Fl_ M-220T 1-3 PBM-227(~ 110E017-3 (F5).

11 OE6ý LF).. 1110E035-3 (C5)

4_6/PABIWG COMP RM 46/PABIWG COMP RM 46/PAB/WG COMP RM 46•PABfWG COMP RM

46/PAB/WG COMP RM

8ICB/AIR COMP RM 8/PAB/PIPEWAY #2 8/PAB/PIPEWAY #2 8/PABIPIPEWAY #3 8/PAB/PIPEWAY #3 8/PAB/SI PUMP AREA W 8/PABISI PUMP AREA W

8iPAB/SI PUMP AREA W 26/U1F

26/U2F

46/PAB

8/PAB 8/PAB 8/PAB

component avail lat SI Engineers office

Y IN K-1A WG COMP SEAL WATER FLOW ORIFICE YIN K-I WG COMP SEAL WATER FLOW ORIFICE "Y N K-1A WG COMP SEAL WATER MAKEUP FLOW ORIFICE Y IN K-1B WG COMP SEAL WATER MAKEUP FLOW ORIFICE Y IN K-1A WG COMP NITROGEN MAKEUP FLOW ORIFICE Y IN K-1B WG COMP NITROGEN MAKEUP FLOW ORIFICE

Y 1`4 T-33B/C IA RECEIVER CROSSTIE ORIFICE V JY 1P-iOARHRPumpRecirOrifice VY Y 1P-IOB RHR Pump Recir Orifice Y Y 2P-10A RHR Pump Recir Orifice

iY Y 2P-10B RHR Pump Recir Orifice 1Y Y IP-15A HHSI Pump ReclrOrifice :Y Y '1P-15BHHSI Pump Recir Orifice Y Y !2P-15A HHSI Pump Recir Orifice SY '2P-15B H•SI Pump Recir Orifice

N N •HX-18AI/2 SGBD HX OUT TO T-26 SGBD TANK IN THRTL 1N N HX-18131/2 SGBD HX OUTL"ET TO T-26 SGBD TANK THRTL N N HX-18A1/2 SGBD HX OUT TO T-26 SGBD TANK IN THRTL iN N :HX-18812 SGBD HX OUTLET TO T-26 SGBD TANK THRTL J R IN RADWAStE STEAM SUPPLY SOUND REDUCING ORIFICE 1Y Y i1P-14A CS Pump Eductor Y Y- 1P-14B CS Pump Eductor VY Y '2P-14A CS Pump Eductor Y V ,2P-14B CS Pump Eductor

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