ML16342B263

Forwards Request for Addl Info Re Electrical Power Sys & Mechanical Sys Support Event Trees Pertaining to PRA for Ongoing Review of long-term Seismic Program.Response Requested by 870302

ML16342B263
Person / Time
Site:	Diablo Canyon
Issue date:	01/16/1987
From:	Schierling H Office of Nuclear Reactor Regulation
To:	Shiffer J PACIFIC GAS & ELECTRIC CO.
References
NUDOCS 8701300044
Download: ML16342B263 (24)

Text

Jl January 16, 1987 Docket Nos.

50-275 and 50-323 Mr. J.

D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, Cali fornia 94106 DISTRIBUTION NRC PDR Local PDR PDg3 Rdg.

T. Novak OGC E. Jordan L. Reiter B. Grimes J. Partlow N. Thompson H. Schierling C.

Vogan ACRS(10)

N. Chokshi G. Giese-Koch

SUBJECT:

LONG TERM SEISMIC PROGRAM -

REQUEST FOR ADDITIONAL INFORMATION As a part or our ongoing interactive review of the Long Term Seismic Program (LTSP) for the Diablo Canyon Plant, one of the areas we intend to review and evaluate in detail are the electric power system and a mechanical system support event trees as pertaining to the Probabilistic Risk Assessment (PRA).

The review and evaluation will focus on modeling and assumptions, logic structure, dependence, relation between selected initiating events and support system availability, treatment of common mode failure, data, test and maintenance, and partial validation of support state quantification.

In order to achieve these objectives, we need the additional information identified in the attached enclosure.

Please provide this information by March 2, 1987.

The reporting and/or recordkeeping requirements of this letter affect fewer than ten respondents; therefore, OMB clearance is not required under PL 96-511.

Sincerely,

Enclosure:

As stated Hans Schierling, Senior Project Manager Project Directorate 0'3 Division of P>JR Licensing-A cc:

See next page 8701300044 870$ lgitt PDR ADOCK 05000275 P

.PDR""

• SEE PREVIOUS CONCURRENCE PD83 CVogan*

1/14/87 PD83 HSchi ing:mak 1/gy'87 PDe.

S rga

/

/87

J K

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i Docket Nos. 50-275 and 50-323 Mr. J.

D. Shiffer, Vice President Nuclear Power Gener ation c/o Nuclear Power.Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, Cali fornia 94106 DISTRIBUTION oc et i e NRC PDR Local PDR PD¹3 Rdg.

T. Novak OGC E. Jordan L. Reiter B. Grimes J. Partlow N. Thompson

, H. Schierling C.

Vogan ACRS(IO)

N.

Cho i

G. G'e-Koch

SUBJECT:

LONG TERM SEISMIC PROGRAM - REQUEST FOR AD TIONAL INFORMATION As a part or our on-going interactive review f the Long Term Seismic Program (LTSP) for the Diablo Canyon Plantwe, intpdd to review and evaluate in detail the electric power system and a mechani a1 system support event trees as per-taining to the Probabilistic Risk Ass sment (PRA).

The review and evaluation will focus on modeling and assumpti s, logic structure, dependence, relation between selected initiating event and support system availability, treatment of common mode failure, data, t t and maintenance, and partial validation of support state quantification.

n order to achieve these objectives, we need the additional information i entified in the attached enclosure.

Please provide this information by Februa 23, 1987.

The reporting and/or r ordkeeping requirements of this letter affect fewer than ten respondents therefore, OMB clearance is not required under PL 96-511.

Sincerely,

Enclosure:

As stated Hans Schierling, Senior Project Manager Project Directorate ¹3 Division of PMR Licensing-A cc:

See next page PD¹3 CP CVogan 1/4C/87 PD¹3 HSchierling:mak I/

/87 PD¹3 SVarga I/

/87

Mr. J.

D. Shiffer Pacific Gas and Electric Company Diablo Canyon CC:

Philip A. Crane, Jr.,

Esq.

Pacific Gas

& Electric Company Post Office Box 7442 San Francisco, California 94120 Nr. Malcolm H. Furbush Vice President - General Counsel Pacific Gas

& Electric Company Post Office Box 7442 San Francisco, California 94120 Janice E. Kerr, Esq.

Cali fornia Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.

4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth Apfelberg 1415 Cozadero San Luis Obispo, California 93401 Ms. Sandra A. Silver 660 Granite Creek Road Santa

Cruz, California 95065 Marry M. Willis, Esq.

Seymour

& Willis 601 Ca 1 iforni a Street, Sui te 2100 San Francisco, California 94108 Mr. Richard Hubbard NMR Technical Associates Suite K

1725 Hamilton Avenue San Jose, California 95125 Arthur C. Gehr, Esq.

Snell

& Wilmer 3100 Valley Center Phoenix, Arizona 85073 NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.

Box 369 Avila Beach, California 93424 Ms.

Raye 'Fleming 1920 Mattie Road Shell Beach, California 93440 Joel

Reynolds, Esq.

John R. Phillips, Esq.

Center for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenburg Editor

& Co-Publisher South County Publishing Company P. 0.

Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.

c/o Philip A. Crane Esq.

Pacific Gas and Electric Company Post Office Box 7442

'an Francisco, California 941?0 Mr. W.

C. Gangloff Westinghouse Electric Corporation P. 0.

Box 355 Pittsburgh, Pennsylvania 15230 David F. Fleischaker, Esq.

P. 0.

Box 1178 Oklahoma City, Oklahoma 73101 Managing Editor San Luis Obispo County Telegram Tribune 1321 Johnson Avenue P. 0.

Box 112 San Luis Obispo, California 93406

f

Pacific Gas

& Electric Company Diablo Canyon CC:

Dr.

R.

B. Ferguson Siera Club - Santa Lucia Chapter Rocky Canyon Star Route Creston, California 93432 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas

& Electric Company 1726 M Street, N.W.

Suite 1100 h'ashington, DC 20036-4502 Regional Administrator, Region V

U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Michael J. Strumwasser, Esq.

Special Counsel to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, California 90010 Mr. Tom Harris Sacramento Bee 21st and 0 Streets Sacramento, California 95814 Ms.

)acquelyn Wheeler 2455 Leona Street San Luis Obispo, California 93400 Lewis Shollenberger, Esq.

US Nuclear Regulatory Commission Region V

1450 Maria Lane Suite 210 Walnut Creek, California 94596 Dian M. Grueneich, Esq.

Edwin F. Lowry, Esq.

Grueneich

& Lowry 345 Franklin Street San Francisco, California 94102 Mr. Thomas Devine Government Accountability project Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009 Chairman San Luis Obispo County Board of Supervisors Room 220 County Courthouse Annex San Luis Obispo, California 93401 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 President California Public Utilities Commission California State Building 350 McAllister Street San Francisco, California 94102 Mr. Joseph

0. Ward, Chief Radiological Health Branch State Department of Health Services 714 P Street, Office Building b'8 Sacramento, California 95814 Ms. Nancy Culver 192 Luneta Street San Luis Obispo,.California 93401 Ms. Laurie McDermott, Coordinator Consumers Organized for Defense of Environmental Safety 731 Pacific Street, Suite 42 San Luis Obispo, California 93401

t

Pacific Gas and Electric Company Diablo Canyon CC:

Or.

S.

T. Algermissen U.S. Geological Survey P. 0.

Box 25046 Mail Stop 966 Denver Federal Center Denver, Colorado 80225 Dr. Keiiti Aki Department of Geological Sciences University of Southern California Los Angeles, California 90089 Dr. C. J. Costantino 4 Rockingham Road Spring Valley, New York 10977 Dr. James Davis State Geologist California Divison of Mines and Geology Room 1351 1416 Ninth Street Sacramento, 'California 95814 Dr. Ralph J. Archuleta Department of Geological Sciences University of California Santa Barbara Santa

Barbara, California 93106 Dr. Steven M. Day S-Cubed P. 0.

Rox 1620 La Jolla, California 92038 Mr. Don Bernreuter Lawrence Livermore Laboratory P. 0.

Box 808 Livermore, California 94550 Dr. George Gazetas JEC 4049 Renssalear Polytechnic Institute

Troy, New York 12180-3590 Mr. Donald A. Brand Vice President, Engineering Pacific Gas and Electric Company 77 Beale Street, Room 2645 San Francisco, California 94106 Dr. David Perkins U. S. Geological Survey P. 0.

Box 25046 Mail Stop 966 Denver Federal Center

Denver, Colorado 80225 Dr. Robert D. Brown, Jr.

U.S. Geological Service Building 8, 5'977 345 Middlefield Road Menlo Park, California 94025 Dr. Morris Reich Structural Analysis Division Building 129 Brookhaven National Laboratory

Upton, New York 11973 Mr. Loyd S. C'luff Pacific Gas and Electric Company 77 Beale Street, Room 2661 San Francisco, Cali fornia 94106 Dr.

Ken Campbell U.S. Geological Survey P.O.

Box 25046, Mail Stop 966 Denver Federal Center

Denver, Colorado 80225 Dr. Jean Savy Mail Stop L-196 Lawrence Livermore Laboratory P. 0.

Box 808 Livermore, California 94550

Pacific Gas and Electric Company Diablo Canyon CC:

Dr. David B.

Slemmons 2995 Golden Valley Road

Reno, Nevada 89506 Dr. Andrew S. Veletsos 5211 Paislev Avenue

Houston, Texas 77096 Dr. Robert Youngblood Building 130 Brookhaven National Laboratory

Upton, New York 11973

ENCLOSURE DIABLO CANYON NUCLEAR POWER PLANT LONG TERM SEISMIC PROGRAM (LTSP)

REQUEST FOR ADDITIONAL INFORMATION The staff and its consultants, Brookhaven National Laboratory (BNL) as a part of their ongoing review of the LTSP Probabilistic Risk Assessment (PRA) study, plan to review and evaluate in detail the electric power (EP) event tree and the mechanical system event tree which feed into frontline system event trees.

(Refer to the attached transparencies presented at August 19-21, 1986 meeting and included in the staff meeting summary dated December 18, 1986).

In order to perform our review, please provide the fo1lowing information for the above two support system models.

1.

Sufficient documentation of the support state model is needed for the review.

This includes definitions of the support states, basis for development, and descriptions of the approach/methodology employed.

The scope and depth of the documentation to be supplied should be analogous to that supplied in the Midland PRA {Letter from J.

M. Cook, Consumers Power Company to H.

R. Denton, NRC, May 7, I984).

2.

The Boolean expression (fault trees) and associated data base that determine the quantification of the support system states is requested.

3.

In order to understand the plant-specific support systems and their interaction with the front line systems, provide the plant system descriptions for each of the modelled support systems.

4.

Provide a description of the important oper'ator actions that have been identified/utilized in the study including a listing and description of procedures used to implement these actions and any training material associated with such action and the resultant quantification.

PHASE II EVENT SEQUENCE MODELS ELECTRIC POWER EVENT TREE MECHANICALSYSTEMS EVENTTREE EARLYFRONTLINE EVENT TREE-GENERALTRANSIENT LATE FRONTLINE EVENTTREE LT1 EARLYFRONTLINE EVENT TREE-SMALLLOCA LATE FRONT LINE EVENTTREf LT2 SUPPORT MODEL FRONTLINE MODEL PRI'.LIMINARYR)iSVLTS SVBJ I Cl TO C'I IANGI'lckard, Lowe and Garrick, Inc.

~

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Mi:CHANICALSUPPORT SYSTEM EVENT TREE PIIASE II ett ~ ~ te ~ ~ e ~ ~ ~ ~ ~ ~ ~ tete ttt ~ ~ ~ t ~ I ~tt ~tt ~tt ~ t*t~ t ~titit~etttttt*titl~tt ~ ~ittt*~*tltttlttttt~tttt ~ti~tttttt**ttttlttiltttt

~ ~itt~it~ ~i ~ 11 tGE AUX EVENT TtEE RUNT 1

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~t ~ttttt~ttttittttt cVcN NANE OF EVENT FREQUENCT IE SA SS RT AS CC SV AV CV INITIATINS EVENT SSPS

'TRAIN A

SSPS TRAIN 8 REACT3R TRIP FUHCT ION AUXILIARY SALT HATER COOLINS CONtOVEHT COOLING BATcR SYSTcV 490V SIITCNGEAR VcNTILATIOV STSTEN AUXILIART 8UILPIHS VENTILATION SYSTEN CONTROL ROON PRcSS ~

AHP VENTS STSTEN 1 '3090E>09 O.OOO3O

-O1 0 ~ 00930E-01 0 ~ 03030E-01 0 00039E 01 0 ~ 93030E-01 0 930OOE-01 Oo09000E-01 0 ~ 09030c-01 PGF.

AUX EVENT TREE RUN4 1

I'VE'S)

NONE IE SA SS AS CC SV AV CV SEG EHD STATE SEO I

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4 5

6 7

8 9

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10 XFR1 17 11 XF R2 25

'l2 XFR2 49 13 XFR2 73 XFR2 97 15 XFR2 121 16 XFR2 145 17 XFR2 169 2

3 4

5 6

7 8

1d 24 48 72

'- 96 120 144 168 192 PRELIMINARYRESULTS SUBJECT TO CHANGE Pickard, Lowe and Garrick, Inc.

IE ELECTRIC POWER EVENT TREE STRUCTURE OC NV DF DC DH HF HC HH 1F 10 1H 13 12 11 FO F3 F2 Fl PIIASE II SEC END STATE

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1 2

3 4

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9 10 11 12 13 14 15 16 17Ie 19 20 22 23 24 25 26 27 Ivl IV2 IV3 IV4 IV5 IV6 IV7 IVDIN IV9 IV9 IV9 IV9 IVIO IVIO IV10 IVIO IV11 Ivll IV11 IV11 IVDIN IVOIN IVDIN IVQIN IV13 IV13 IV13

" OG OFFsite Grid NV Non-vital AC Distr ibution DF Unit 1 125V DC Bus 11 DG Unit 1

125V DC Bus 12 DH Unit 1 125V DC Bus 13 HF Unit 1

4160V Vital Bus F

MG Unit 1 4160V Vital Bus G

HH Unit 1 4160V Vital Bus M

1F Unit 1 480V Vital Bus 1F 1G Unit 1

480V Vital Bus 1G 1H Unit 1

480V Vital Bus 1H 13 Unit 1 Diesel Generator 3 (Bus 1F or 2F) 12 Unit 1 Diesel Generator 2 (Bus 1G) 11 Unit 1 Diesel Generator 1

(Bus 1H)

FO DG Fuel Oil System PRIILIMINARYRESULTS SUB 3 ECT TO CHANGE F3 Fuel F2 Fuel Fi Fuel Oil Supp lg DG 13 Oil Supply DG ld Oil Supply DG Il

Pickard, Lowe and Garrick, Inc.

ELECTRIC POWER TREE END STATE DEFINITIONS GENERAL TRANSIENT TREE QUANTIFICATION PHASE II 1tttttttkttktttttktkkttttttttttktttttktkttkttktl

~kttktttttkktttltttkttttttttkkktt PCE EP EVENT TREE RUNN 1 '. V. (S)

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FRONTLINE SYSTEMS ELEC.

PiER.

NOEND STATE FREOU I'livkg q FREOVENCY k SA Sff OC TDP ASX CCX SVX AFX CPX SI X LRX CSX FCX Ik ktkktklkkktttttktltttkt t++tttkt~kklkttlttkktkkkktkttktttttttkkkktkttktttttkttkt 1

IV1

,2 IV2 3 IV3 4 IV4 5 IV5 6 IV6 7 IV7 8 IV9 9 IV10 10 IV11 11 IV13 12 IV14 13 IV15 14 IV17 15 IV19 16 IV20 17 IV21 18 IV23 19 IV25 20 IV27 21 IV28 22 IV29 23 IV30 24 IV32 25 IV34 26 IV37 27 IV38 28 IV39 29 IV41 30 IV43 af. Ivab

9. 896E-01

3. 744E-04

3. 744E 04

3. 295E-08

3. 743E-04

3. 294E-08

3. 294E-08

2. 819E-03

1. 066E-06

1. 066E 06

2. 256E-03

8. 530E-07

8. 531E-07

6. 94BE-Ob

2. 255E-03

8. 528E 07

8. 52BE-07

6. 946E-06

5. 753E-06

l. 168E 06

5. 703E-04

2. 157E-07

2. 157E-07

1. 615E-06

l. 295E-06

5. 883E-04

2. 225E-07

2. 225E-07

1. 666E-Oe

1. 336E-06

-3. 335E~P k

k k

k X

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X k

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5. 821E 04

j. 485E-06

4. 168E-05

1. 068E-07

4. 281E-05

1. 177E-07

4. 039E-06

3. 154E-07

2. 234E-.06

3. 879E-05

.3. 671E-06

5. 070E-06

3. 47/E-07

3. 589E-08

2. 099E-08

3. 749E-07

2. 467E 08

2. 296E-08

3. 717E 08 t

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Pickard, Lowe and Garrick, Inc.

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HI,HCTRIC POWER TREE END PIIASF, II STATE DEFINITIONS - I.OSS OF OFFSITH POWER TREE QUANTIFICATION 1<<<<<<<<>>>><<>><<>>>><<>>>>>>>><<<<>>>><<>>>><<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

PGE EP EVENT TREE RUN¹ 1

I. V.(S)

NONE HOSP CASE CUTOFF=5. 0-7 TADLE OF UNIQUE IMPACT VECTORS AFTER FREQUENCY DINNING

<<<<<<>>>>>>>>>>>>>>>><<>>>><<>><<>>>>>>>><<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>'LEC.

PWR FRONTLINE SYSTEMS PRELIMINARYRESULTS SUBJECT TO CHANGE NOVO ST+~ FREQUENCY

<<SA SD OG TDP ASX CCX SVX AFX CPX SIX lRX CSX FCX

<<<<JISM<<>>>><<>><<<<>><<>><<>><<>>>>>>>>>>>>>>e<<>><<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.

1 IV49 2 IV50 3 IV51 4 IV52 5 IV53 6 IV54 7 IV55 8 IV56 9 IV57 10 IV58 1 1 IV59 12 IV60 13 IV61 14 IV62 15 IV63 16 IV64 17 IV65 18 IV66 19 IV67 20 IV68 21 IV69 22 IV70 23 IV71 24 IV72 25 IV73 26 IVDIN

8. 048E-01

2. 053E-03

5. 762E-02

j. 476E-04

5. 919E-02

i. 62BE-04 5: 584E-03

4. 361 E-04

3. 089E-03

5. 362E-02

5. 076E-03

7. 01 OE-03

4. 807E-04

i. 235E-06

4. 962E-05

i. 898E-06

5. 036E-06

2. 902E-05

6. 566E-06

5. 184E-04

1. 322E-06

3. 411E-05

i. 200E-06

5. 400E-06

3. 175E-05

3. 34BE-07 X

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02 Oi.

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