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FIRE FR TECTION REGEL GR33F MEETING REPORT

Name of Auth:m Ronald Feit -.

Date and Place: July 12, 1979; Bethesda, Maryland-

Purpose: To discuss plans for response to the User Request Memo callingfor replication testing (R. Mattson and V. Stello to S. Levinedated June 11,1979)

Discussion

The User Recuest letter fror NRR (Mattson/Stello to Murley) dated June ll,1979,was discussed. The Chairc.an made the following points prior to the discussion.Because of the complexity of the test it is probably not practical to conductall tests requested in the User Request memo in parallel. RES plans tostart on a single test initially and start planning for at least one moretest as soon as a definite schedule and ccst esticate are developed forthe first test. As the Review Group and Contrar. tors gain experience, paralleltesting can be rur.. With regard to the first tast, what is needed initiallyis a clear agreement on the physical model to be tested and the test scope.

During the reeting discussion the following were agreed to.

1. The Rancho Seco Make-up Pump Room Test will be the first testconducted as suggested in the User Request.

2. The test objective will be to determine whether or not the cablefrom one division rerains functional after the design basis fire(DBF). The choice and details of the DBF and the specific testdefinition for functionability will be defined later. It was ,

concluded that these decisions would be rade after reviewof the fire hazards analysis and the actual room layoutincluding fire protection * equipment.

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3. Two full mockup tests will be conducted as requested in the UserRequest. The first test would be with the entire system operatingand the second test would assume that the automatic sprinklersdid not function. The second test will replicate as closely aspossible the functioning of the plant fire brigade. The testconditions to simulate the fire brigade were not specified;however, it was suggested that the utility personnel be requestedto conduct a mock fire drill (without prior notice) to establisha reasonable delay time to locate the fire, organize the firebrigade, collect the necessary equipment and enter the make-up

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pu : rc . The assu : tic- is bein; nade that once a DBF isacreed t; the choice of ic:ation of the fire within the room can

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be race on a worst case basis sc that only one set of tests needbe conducted. %

4. The User Regaest memo requested that the test be deteministicwith regard to the sprinklers and not leave unanswered the questionof whether or not they will activate. It was agreed that separateeffects testing of the sprinklers used in Rancho Seco will beconducted in tne actual test roo under static air conditionsidentical '.o that which will be used in the test and wasrequested in the Users Request tema. These separate effectstests will establish the longest expected delay time to activatethe sprinklers with the test configuration, type and locationof the sprinklers and particular DEF. This delay time will beused during the actual test to detemine when the sprinklerswill be manually initiated. One issue that was not resolvedis whether or not the separate effects testing must includeadditional fuel represented by the cable. For example, is itintended that the DEF initiate the sprinklers directly or is itnecessary for the fire to consume some of the cable to allowenough time at elevated temperatures for the sprinklers to activate?Another issue (not discussed during the meeting) is what are theactual test conditions needed to simulate the static conditionrequested in the Users Request.

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5. In order to expedite the test program, most design decisionsconcerning the tests will be made by a Test Coordinating Corniitteeconsisting of R. Feit. E. Sylvesto . G. Harrison, and D. Notley.All decisions will be documented and sett to RES and NRR managementand the remainder of the Fire Protection Research Review Group.Decisions that are in conflict with the fire hazards analysis forRancho Seco or which modify conclusions drawn in the analysis willbe discussed with either an original member of the plant reviewteam or an appointed replacement.

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6. The choice of the D3F will be based on the fire hazard presentedby the pump lube oil system. The amount of oil and the locationwithin the room will be based on a review of the fire hazards-

analysis !.upplemented by a review of the plant design. Forexample, the pressure of the lube oil system, sump location,capacity, and feed line size will be considered. If the data

presented in the fire hazards analysis are either inccmplete orconsidered to be incorrect after a review of the plant design, thenadditional fire hazards assumptions will be formulated.

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7. The first te t will be condu:ted at UL in Chicago. Based onpast ex; erie :e in cc-i.:ti".; tests at UL (Chicago), tney maynot ha e 5.i i: Tent cata reco* ing ca::atility. An estimate ofdata load will have to be made and additional caoacity sent from .

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Sandia if ne:essary. Tnis will require a measurement list at anearlier date than would normally be necessary.

The following action ite s were agreed to during the meeting.

1. E. Sylvester will distribute drawings and safety evaluation reportsto the other members of the Test Coordi7ation Connittee at leasttwo weeks prior to the next meeting.

2. G. Harrison will attempt to obtain sprinkler delay times by reviewof existing data and by censultation with experts at the NationalBureau of Standards. Although it is not anticipated that this workwill negate the need for sprinkler separate effects testing, itcould reduce the number and comolexity of this portion of thet( t program. To be of most value at least a prelir ; nary assessmentshould be completed prior to the next meeting.

3. HRR will provide guidance concerning the test conducted to evaluatethe vulnerability of the rake-up pump room to fire when it is requiredto rely on the fire brigade. This includes issues such asorganization and delay time.

4. The next meeting of the Fire Protection Research Review Group todiscuss the replication test is planned for August 21, 1979.

5. E. Sylvesi.er will rake arrangements to infom the Rancho Secotranagement that we would like to perfom a replication test oftheir pump rake-up room. Following the August ?1 meeting a sitedesign review will probably be necessary.

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FIRE PR37ECTION RESEAr.:H REVIEW GROJP MEETIN3

July 12, 197_;i.,,

Name Organization,

Gary L. Bennett NRC/RES,

Lawren:c Hunter APL/JH'J

Greg Harrison NRC/ DSS

Ernest Sylvester NRC/ DOR

Cal Heit NRC/DDR

David P. Notley NRC/SD

Leo J. Klamerus Sandia

John Boccio BNL

Robert Hall BNL

Ronald Feit NRC/RES

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