ML17303A380

LER 87-005-00:on 870305,fire Patrol for Control Diesel Generator & Main Steam Support Structure Performed Late. Caused by Malfunctioning Access Door to Main Steam Support Structure.Door Returned to svc.W/870401 Ltr

ML17303A380
Person / Time
Site:	Palo Verde
Issue date:	04/01/1987
From:	Bradish T, Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
192-00170-JGH-T, 192-170-JGH-T, LER-87-005, LER-87-5, NUDOCS 8704070399
Download: ML17303A380 (5)

Text

0 REGULATORY INFORMATION > STRIBUTION SYSTEM (RIDS)

ACCESSION NBR;8704070399 DOC ~ DATE: 87/04/01 NOTARIZED: WO DOCKET ¹ FACIL:STN 50 529 Palo Verde Nuclear Stations Unit 2r Ar izona Publi 05000529 AUTH'AME'UTHUR AFFILIATION BRADISH<T.R ~ Arizona Nuclear Power Project (former ly Arizona Public Ser v HAYNES',G>> Arizona Nuclear Power Project (former ly Arizona public Serv RECIP ~ NAME HECIPIKiVT AFFILIATION

SUBJECT:

LER 87<<005-00:on 870305r f ir e patr ol for control diesel gener ator 8 main steam support structure performed late ~

Caused by malfunctioning access door to main steam. suppor't structure ~ Door r eturned to svc.N/870401 1 tr ~

DISTRIBUTION COOK: IE?2D COPIES RKCE'IVED:LTR t ENCL 1 SIZE~.3 TXTLE4 50 ~ 73 Licensee Kvent Repor t (LER) g Incident Rptr etc.

NOTES:Standar dized pl ant,M ~ Davisr NRR:1Cy ~ 05000529 RKC IP IENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL IO CODE/NAME LTTR ENCL POS LA 1 1 PDS PO 1 1 LICITRAgK; 1 1 DAVIS' 1 INTERNAL: ACRS MICHELSON 1 1 ACRS MOELLER 1 1 ACRS WYLIK 1 1 AEOD/DOA 1 AEOD/DSP/ROAB 2 2 AEOD/OSP/TAPS 1 1 NRR/ADT 1 1 NRR/DKST/ADE 1 0 NRR/DEST/ADS 1 0 NRR/DKST/CEO 1 1 NRR/DEST/ELB 1 1 NRR/OEST/ICSB 1 1 NRR/DEST/MEB 1 1 NRR/DEST/MTB 1 l NRR/DEST/PSB 1 1 NRR/DEST/RSB 1 NRR/DEST/SGB l. NRR/DLPQ/HFB 1 l NRR/OLPQ/GAB 1 1 NRR/DOEA/EAB 1 1 NRR/ORKP/EPB 1 1 NRR/OREP/RAB 1 1

~VRR/~P- 8/ILRB 1 1 NRR/PMAS/PTSB 1 1 RRFG EI.I.W 02; 1 1 RES SPEISg T 1 1 RGN5 F ILE 01 ~

1 1 EXTERNAL'G&G GROHrM 5 5 H ST LOBBY NARD 1 l LPOR 1 1 NRC POR 1 1 NSIC HARRIS' 1 1 NSIC MAYSgG 1 1 NOTES: 1 1 TOTAL'UMBER OF COPIES REQUIRED: LTTR 43 ENCL 41

NRC Form 255 UA. NUCLEAR REOULATORY COMMISSION (94)2)r APPAOVKD OMS NO. 21500104 LICENSEE EVENT REPORT {LERI EXPIRES: 5/$ )/$$

FACILITY NAME Il) DOCKET NUMSER (2) 0 5 0 0 0 5 2 9 1 QF TITLE 14)

EVENT DATE (5) LER NUMSER IS) REPORT DATE (7I OTHER FACILITIKSINVOLVED (5) 5'<<>> 55QV<<NTIIL <<<<er R<<V<<NON MONTH OAY YEAR YEAR C.N NVMSEre NUM<<5rr MONTH DAY YEAR FACILITYNAMES DOCKET NVMSER($ )

N/A 0 5 0 0 0 0305 878 7 0 0 5 0 N/A 0 5 0 0 0 THIS RKtORT IS SUSMITTED PURSUANT T0 THE REOV IREM EATS OF 10 CFR (I: IOrr<<N ore or more of rrrr forloworfl (11 OPERATINO MODE (Sl 4 20.402(5) 20AOS(c) 50.724)(2)(4) 7$ .71(51

~ OWER 20.405(e l(II(il SOM(c) Ill 50.7$ 4)(2l(el 72,71(cl LEVEL p p p 20.405(e I (I l(5 I SOM(<<I(21 50.7 $4 I (2)(riil OTHER (Specify lp A(reerect 0<<row rrrrf lo Trrt. HIIC FOrm gyes(X'~@4@~" ~I 20.405(e) (ll(9(l 50.724) (2)(i) 50 7$ 4) (2)(rSI) IAI JFFAI 20A05(e) (I l(ir) 50.7$ 4)(2) IS) 50.724)(21 (r)5 I (5 I 20.405(e l(1) (rl 50.7$ 4)(21(W) 50.72(el(2) (el LICENSEE CONTACT FOR THIS LKR l12)

NAME TELEPHONE NUMSER AREA COOK Thomas R. Bradish, Compliance Supervisor (Ext. 6936) 6029 32- 5300 COMtLETK ONK LINK FOll EACH COMtONKNT FAILURE OKSCRISKD IN THIS REPORT (1$ )

CAUSE SYSTEM COMPONENT MANUFA(>>

TVAER EPOATASLE TO NPADS r',

CAUSE SYSTEM COMPONENT MANUFAC.

TUAER EPOATASL TO NPADS I~A SVPPLEMKNTAL REPORT EXPECTED (14) MONTH DAY YEAR EXPECTKD SUSMISSION YES Ilfyer. COmpirre EXPECTED SVdetISSIDIf DATKI DATE (15)

X NO ASSTAACT ILImrt to 1400 co<<crt, I.e., rpprorlmerriy flfrrrrrerror~<< typrrwrrNo Nerd (1$ 1 At approximately 1800 MST on March 5, 1987, Palo Verde Unit 2 was in Mode 4 (H01'HUTDOWN) at 0 percent power when an employee (utility non-licensed) reported that the hourly fire patrol for the Control Diesel Generator, and Main Steam Support Structure (MSSS)(NM) buildings had been performed late. The fire patrol had been established at 0938 MST on March 5, 1987 to monitor degraded thermolag in these areas pursuant to Technical Specification 3.7.12 Action a.

The root cause of this event was a malfunctioning access door in the MSSS building. As immediate corrective action another watchstander completed the watch immediately upon discovery of the missed watch. Additionally, a work authorizing document was issued and the door was returned to service.

Although other events of missed fire watches have been reported, there have been no similar events resulting from the same root cause.

8704070399 870401 PDR S

ADOCK 050005Z9 zQP PDR NRC Form 555

NRC Polls 544A U.S. NUCLEAR REOULATORY COMMISSION LICENSEE EYENT REPORT (LENI TEXT CONTINUATION APPROVEO OMS NO 5150&IOl EXPIRES'/$ 1/SS PACILITY NAME II OOCKET NUMSER Ill LER NUMSER (41 ~ AOE ISI YEAR ' 54OVCNT/AL .'I'.:5 SCVlr/Otl svu 4R N NNVVrrs Palo V.t 2 0 5 0 0 0 5 2 9 8 7 Q Q 5 Q 0 02o" 0 2 TEXT//P/sr/4 rrror rR/rs5/I//IC AN/s JRIA'r/lITI At apely 1800 MST on March 5, 1987, Palo Verde Unit 2 was in Mode 4 (HQT I) at 0 percent power when an employee (utility non-licensed) reported that ly fire patrol for the Control, Diesel Generator, and Main Steam Suppo:ture (MSSS)(NM) buildings had been performed late. The fire patrolen established at 0938 HST on March 5, 1987 to monitor degraded 4

4 thermch had been identified in an NRC audit, pursuant to Technical Specii 3.7.12 Action a.

This is discovered by the foreman at 1505 when the fire patrol did not arrivie scheduled tours of the'ontrol Building. The 80 foot HSSS patrol shouliommenced at 1400 and at 1440 the Control and Diesel Generator Build;s were due. Consequently the fire patrol was not performed within 1 houIuired by Technical Specification 3.7.12 Action a. As an immediate correition, another fire watch performed the patrol at 1523. The duration of th: was approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 41 minutes.

,~ 4 IN The rie of the event was attributed to a malfunction of the access door in thiuilding. The fire watch was locked in the building at the completion of heiand could not notify the appropriate authority due to the unava:y of a telephone or a portable radio. To prevent recurrence, fire I watch<immediately issued portable radios and a design change was issued Nl to pe}y install a telephone in the HSSS building.

The rie of the malfunctioning door was attributed to a magnetic lock improIcuring. A work order was generated and the door was returned to serviEview'f other work documents revealed the magnetic lock has malfuE one other time in Uni:t 1 and once in Unit 2. A Engineering EvaluEquest (EER) has been initiated to evaluate the adequacy of the magneting mechanism in this application.

There structures, components, or systems that were inoperable at the start event, other than those described above, that contributed to the

' eventr were no manual or automatic safety system responses. There were no uniaracteristics of the work location or procedural deficiencies which I

contrio the event. There were no preventable operator or personnel actions which uted to this event.

This Ed not adversely affect the safe operation of the plant or the health and sa the public since in the event of a fire, the fire suppression system would tuated.

Althour events of missed fire watches have been reported there have been no siirents resulting from the same root cause.

NN I

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Arizona Nuclear Power Project P.o. BOX 52034 ~ PHOENIX, ARIZONA85072-2034 192-00170-JGH/TRB/ESP April 1, 1987 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Unit 2 Docket No. STN 50-529 Licensee Event Report 87-005-00 File: 87-020-404

Dear Sirs:

Attached please find Licensee Event Report (LER) No. 87-005-00 prepared and submitted pursuant to 10 CFR 50.73. In accordance with 10 CFR 50.73(d), we are herewith forwarding a copy of the LER to the Regional Administrator of the Region V Office.

If you have any questions, please contact T. R. Bradish, Compliance Supervisor at (602) 932-5300 Ext. 6936.

Very truly yours, UG J. G. Haynes Vice President Nuclear Production JGH/ESP/cld Attachment CC ~ 0. M. DeMichele (all w/a)

E. E. Van Brunt, Jr.

J. B. Martin R. P. Zimmerman R. C. Sorensen E. A. Licitra A. C. Gehr INPO Records Center

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