ML17289B168

LER 88-008-01:on 880318,determined That 11 Plant TS Fire Penetration Seals Discovered Impaired.Caused by Inadequate Control of Fire Seal Penetrations.Maint Work Requests Written to Repair penetrations.W/930212 Ltr

ML17289B168
Person / Time
Site:	Columbia
Issue date:	02/12/1993
From:	John Baker, Fies C WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-93-035, GO2-93-35, LER-88-008, LER-88-8, NUDOCS 9302220125
Download: ML17289B168 (7)

Text

~ACCEI ERAT DOCUMENT'DISTP~UTION SYSTEM REGUL RY INFORMATION DISTRIBUTI~ SYSTEM (RIDS)

ACCESSION NBR:9302220125 DOC.DATE: 93/02/12 NOTARIZED: NO" DOCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTiI.NAME AUTHOR AFFILIATION FIESFC ~ LE Washington Public Power Supply System

-BAKERFJoW. Washington Public Power Supply System RECIP.NAME RECIPIENT= AFFILIATION R

SUBJECT:

LER 88-008-01:on 880318,determined that penetration seals discovered impaired.

ll Caused plant TS fire-by inadequate contro'1 of fire seal penetrations.Maint Work Requests D written to repair penetrations.W/930212 ltr. $

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES:

RECIPIENT . COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL. D PD5 LA 1 1 PD5 PD 1 1 CLIFFORD,J 1 1 D INTERNAL: ACNW 2 2 ACRS 2 2 AEOD/DOA 1 1 AEOD/DSP/TPAB 1 1 AEOD/ROAB/DSP 2 . 2 NRR/DET/EMEB 7E 1 1 NRR/DLPQ/LHFB10 1 1 NRR/DLPQ/LPEB10 1 1 NRR/DOEA/OEAB 1 1 NRR/DREP/PRPB11 2 2 NRR/DST/SELB 8D 1 1 NRR/DST/SICB8H3 1 1 N SPLB8D1 ~ 1 1 NRR/DST/SRXB 8E 1 1 EG FILE 02 1 1 RES/DSIR/EIB 1 1 RGN FILE 01 1 1 EXTERNAL: EG&G BRYCEFJ.H 2 2 L ST LOBBY WARD 1 1 NRC PDR 1 1 NSIC MURPHYFG.A 1 1 NSIC POOREFW 1 1 NUDOCS FULL TXT 1 =

1 D

D D

NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTEI CONTACI'HE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 31 ENCL 31

WASHINGTON PUBLIC POWER SUPPLY SYSTEM F.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99352 February 12, 1993 G02-93-035 Docket No. 50-397 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C: 20555

SUBJECT:

NUCLEAR PLANT WNP-2 LICENSEE EVENT REPORT NO. 88-008-01 Transmitted herewith is Licensee Event Report No. 88-008-01 for the WNP-2 Plant. This revised report is submitted in response to the requirements of 10CFR50.73. It discusses the cause of the event and provides an update of corrective actions taken. This information was.

not available for Revision 0 of the LER.

Sincerely, J. W. Baker

')/

WNP-2 Plant Manager (Mail Drop 927M)

JWB/CLF/nw Enclosure CC: Mr. J. B. Martin, NRC - Region V Mr. R. Barr, NRC Resident Inspector (Mail Drop 901A, 2 Copies)

INPO Records Center - Atlanta, GA Mr. D. L. Williams, BPA (Mail Drop 399) 9302220i25 9302i2 PDR ADDCK 05000397-S PDR

LICENSEE Evk REPORT (LER)

AGILITY NAHE (I) DOCKET NUHB R ( ) PAGE (3)

Washin ton Nuclear Plant - Unit 2 0 5 0 0 0 3 9 7 I OF ITLE (4)

PLANT TECHNICAL SPECIFICATION FIRE PENETRATION SEALS DURING ONGOING 100% INSPECTION DISCOVERED,'MPAIRED/UNSEALED EVENT DATE (5) I.ER NUMBER 6) REPORT DATE 7 OTHER FACILITIES INVOLVED 8)

HONTH DAY YEAR YEAR SEQUENTIAL EVI 5 ION HONTH DAY YEAR FACILITY NAHES CKE NUHB R (S)

HUHBER UMBER 50 0 3 I 8 8 8 8 8 0 0 8 0 I 0 2 I 2 9 3 50 PERATING HIS REPORT IS SUBHITTEO PURSUANT TO THE REQUIREHENTS OF 10 CFR 5: (Check one or more of,the following) (11)

ODE (9) I OWER LEVEL 20.402(b) 20.405(C) 0.73(a)(2)(iv) 77.71(b)

(10) 20.405(a)(1)(i) 50.36(c)(1) 0.73(a)(2)(v) . 73.73(c) 20.405(a)(1)(ii) 50.36(c)(2) 0.73(a)(2)(vii) THER (Specify in Abstract 20.405(a)(1)(iii) X 50.73(a)(2)(i) 0.73(a)(2)(viii)(A) elow and in Text, NRC 20.405(a)(1)(iv) 50.73(a)(2)(ii) 50.73(a)(2)(viii)(B) Form 366A) 20.405(a)(1)(v) 50.73(a)(2)(iii) 50.73(a)(2)(x)

LICENSEE CONTACT FOR THIS LER (12)

AHE TELEPHONE HUHBER CL Fies, Licensing Engineer REA CODE 5 0 9 7 7 4 1 4 7 COHPLETE OHE LINE FOR EACH COHPOHEHT FAILURE DESCRIBED IH THIS REPORT (13)

CAUSE SYSTEH COHPOHEHT HAHUFACTURER EPORTABLE CAUSE S'YSTEH COHPOHEHT HAHUFACTURER EPORTABLE

,'I:6 0 HPRDS TO NPRDS SUPPLEHEHTAL REPORT EXPECTED (14) XPECTED SUBHISSIOH HOHTH DA'Y YEAR ATE (15)

YES (If yes c (etc EXPECTED SUBHISSIOH DATE) HO TIIACI neI On March 23, 1988 and March 25, 1988, it was determined that problems documented (on March 18, 1988 and March 24, 1988) with regard to 11 Plant Technical Specification fire penetrations were reportable under 10CFR50.73 (a)(2)(i). The penetrations were impaired such that they would not qualify as a three-hour fire barrier. The penetrations are located in the Diesel Generator and Reactor Buildings.

The problems were identified 'during the performance of ongoing physical walkdowns of all accessible Technical Specification walls and penetrations as further corrective action committed to in LER 87-030.

As required by the Plant Technical Specifications, the penetrations were placed on an hourly fire tour.

Further corrective actions include 1) preparing Maintenance Work Requests (MWRs) to repair/seal the penetrations, and 2) completing the 100 percent review of documentation and physical walkdowns of all accessible Technical Specification walls and penetrations.

The cause of this event was inadequate control of fire seal penetrations during the construction turnover process and an inadequate 100 percent walkdown of fire-rated assemblies performed in 1986.

It was determined that this event did not affect the health and safety of either the public or Plant personnel due to the fire protection design of the fire areas involved.

LICENSEE EVENT REPORTER)

TEXT CONTINUATION AGILITY NAHE '(1) OOCKET NUHBER (2) LER NUHBER (8) AGE (3) ear . umber ev. No.

Washington, Nuclear Plant - Unit 2 0 5 0 0 0 3 9 7 8 08 1 2 F 5 ITLE (4)

PLANT TECHNICAL SPECIFICATION FIRE PENETRATION SEALS DISCOVERED IMPAIRED/UNSEALED DURING ONGOING 100% INSPECTION Pln niin Power Level. - 100%

Plant. Mode - 1 (Power Operation) vnD ri in On March 23, 1988.and March 25, 1988, the following problems which were documented with regard to

.Plant Technical Specification fire penetration seals were determined to be reportable under 10CFR50.73 (a)(2)(i).

a) . On March,18, 1988, it was documented on a Plant Nonconformance Report that:

~ Fire seal penetrations D101-3002 and D101-3003 (Diesel Generator Building - 441 Elevation) each had a nonapproved fire configuration type plug installed (holes had been drilled through the center and filled with "AllThread" ).

~ Fire seal penetrations D102-3002 and D102-3003 (Diesel Generator'Building - 441 Elevation) each'had a nonapproved fire configuration type (nonferralloy) plug installed, and the penetrations were not listed in the Plant Seal Tracking System (PSTS) data base.

Fire seal penetration D104-3063 (Diesel Generator Building - 441 Elevation) was impaired in that the seal depth was less than required.

Fire seal penetration D113-2012 (Diesel Generator Building - 441 Elevation) was impaired in that it appears that a cable had been pulled through and the penetration not resealed.

b) On March 24, 1988,'t was documented on a Plant Nonconformance Report that:

Fire seal penetration R116-3003.9 (Reactor Building - 422 Elevation) was impaired in that it appears that a cable had been pulled through and the penetration not resealed.

Fire seal penetration R116-3003.10 (Reactor Building - 422 Elevation) was impaired in that the plug had a drilled hole through its center, and the penetration was not listed in the PSTS data base.

~ ~

Fire seal penetration R116-3011.4 (Reactor Building - 444 Elevation) was impaired in that the seal depth was less than required.

LICENSEE EVENT REPORTER)

TEXT CONTINUATION AGILITY NAME '(i)

Mashington Nuclear Plant - Unit 2 DOCKET NUMBER (2) ear LER NUMBER umber 'v.

(8)

No.

AGE (3) 0 5 0 0 0 3 9 7 8 08 1 3 F 5 ITLE (4)

PLANT TECHNICAL SPECIFICATION FIRE PENETRATION SEALS DISCOVERED IMPAIRED/UNSEALED DURING ONGOING 100% INSPECTION

~ Fire seal penetration-R116-3011.6 (Reactor Building - 444 Elevation) was impaired in that the plug had a drilled hole through its center, and the penetration was not listed in the PSTS data base.

~ Fire seal penetration R410-4004.7 (Reactor Building - 522 Elevation) was impaired in that it appears that a cable had been pulled through and the penetration was resealed.

The problems were identified during the performance of ongoing activities associated with further corrective actions committed to in a previous LER (87-030, "Upgraded Plant Technical specification Fire Wall not Constructed to Qualify as a Three-Hour Fire Barrier and Wall Penetration not Sealed" ).

Specifically, the Supply System committed to perform a 100 percent review of documentation, and physical walkdowns of all accessible Technical specification walls and penetrations, to determine the adequacy of PSTS. The problems noted in this LER (88-008) were discovered during the ongoing physical walkdowns.

The cause of this event was inadequate control of fire seal penetrations during the construction, turnover process and an inadequate 100 percent walkdown of fire-rated assemblies performed in 1986.

mm i rr iv A i n As required by the Plant Technical Specifications, the penetrations were placed on an hourly fire tour.

orrective Acti n her Discussion and a) Further Discussion Fire seal penetrations D101-3002, D101-3003, D102-3002 and D1023003 are located in Fire Area DG-V (1B Diesel Oil Tank Pump Room).

Fire seal penetration D104-3063 is located in Fire Area DG-I (HPCS Diesel Generator).

Fire seal penetration D113-2012 is located in Fire Area DG-III (1B Diesel Generator).

Fire seal penetrations R116-3003.9, R116-3003.10, R116-3011.4 and R116-3011.6 are located in Fire Area R-IV (RHR Pump Room Rl, Pipe Chase and RHR Heat Exchanger "B" Equipment Room).

Fire seal penetration R410-4004.7 is located in Fire Area R-VIII (MCC Room Division 2).

LICENSEE EVENT REPOR ER)

TEXT CONTINUATION

""ACILITY NAME (I) DOCKET NUMBER (2) LER NUMBER (8) PAGE (3)

Year , umber ev. No.

Washington Nuclear Plant - Unit 2 0 5 0 0 0 3, 9 7 8 008 01 4 F 5 TITLE (4)

PLANT TECHNICAL SPECIFICATION FIRE PENETRATION SEALS DISCOVERED IMPAIRED/UNSEALED DURING ONGOING 100% INSPECTION b) Further Corrective Actions

~ . Maintenance Work Requests (MWRs) were written to repair/seal the penetrations.

~ The penetrations which were not previously included in the PSTS data base were added to the data base..

The 100 percent review of documentation, and physical walkdowns of all Technical Specification walls and penetrations has been completed. Additional penetrations found in a degraded condition were repaired.

off 1 Although there were no fires during the event period, the following is a description. of the consequences had a Design Basis Fire had occurred in the areas described in this LER.

a) Fire Area D -I D -Ill and D -V Smoke from a fire would activate one or more smoke detectors, which would alarm in the Control Room. The fire brigade. would be dispatched and take appropriate action in accordance with the prefire plans and emergency response procedures. Manual hoses are available.

The thermal detection system would sense a high heat condition and activate the preaction sprinkler system. Automatic spray heads would fuse and control the fire..

b) Fire Areas R-IV and R-VIII Smoke from a fire would activate an ionization detector, which would alarm in the Control Room.

The fire brigade would be dispatched and take appropriate action in accordance with the prefire plans and emergency response procedures. Manual hoses are available.

In addition, fire area R-IV has a low fire loading and, as a result, the probability of a fire spreading is considered remote.

Accordingly, this event did not affect the health and safety of either the public or Plant personnel.

Similar Events LERs82-028, 87-004-00, 87-004-00, 87-004-01 and 87;030.

~ ~

~

LICENSEE EVENT REPOR ER)

TEXT CONTINUATION FACILITY NAME (I) DOCKET NUMBER (2) LER NUMBER (8) PAGE (3) ear umber ev. No.

Washington Nuclear Plant - Unit 2 0 5 0 0 0 3 9 7 8 008 01 5 DF 5 ITLE (4)

PLANT TECHNICAL SPECIFICATION FIRE PENETRATION SEALS DISCOVERED IMPAIRED/UNSEALED DURING ONGOING 100% INSPECTION-II Inf rm ti n Y~f . EIIS Reference

~t~m /moyen Fire Penetration Seals KP Pen D 101-3002 D1.01-3003 D 102;3002 D102-3003 '

104-3063 D 113-2012 R116-3003.9 R116-3003. 10 R116-3011.4

'116-3011.6 R410-4004.7 Diesel Generator Bldg NB Bldg Reactor Bldg NG Bldg 1B Diesel Oil Tank Pump Room ME Room HPCS Diesel Generator EK Room 1B Diesel Generator NB Room RHR Pump Room Rl ME Room RHR Heat Exchanger "B" Equipment Room ME Room MCC Room, Division 2 ME Room