ML17289B228

LER 91-019-01:on 910716,determined That Failure to Rept Five Periods in Excess of 30 Days of Inoperability of Rv Seismic Monitor in Violation of Ts.Caused by Inadequate Procedures. Procedures revised.W/930318 Ltr

ML17289B228
Person / Time
Site:	Columbia
Issue date:	03/18/1993
From:	John Baker, Fies C WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-93-063, GO2-93-63, LER-91-019, LER-91-19, NUDOCS 9303220230
Download: ML17289B228 (6)

Text

ACCEI ERASED DOCUMENT DIST~KUTION SYSTEM REGULARLY INFORMATION DISTRIBUTI~

SYSTEM (RIDS)-ACCESSION NBR:9303220230 DOC.DATE: 93/03/18 NOTARIZED:

NO DOCKET N FACIL;50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH.NAME-AUTHOR AFFILIATION FIES,C.L.Washington Public Power Supply System BAKER,J.W." Washington Public Power-Supply System'ECIP.NAME RECIPIENT AFFILIATION r SUBJECT LER 91-019-01:on 910716,determined that failure to rept five periods in excess of 30 days of inoperability of RV seismic in violation of TS.Caused by plant procedure.C/A includes revising Plant procedure when removing frame.W/930318 ltr.DISTRIBUTION CODE: IE22T'COPIES RECEIVED:LTR ENCL SIZE: TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.NOTES: RECIPIENT ID CODE/NAME PD5 LA CLIFFORD,J INTERNAL: ACNW AEOD/DOA AEOD/ROAB/DSP NRR/DE/EMEB NRR/DRCH/HHFBHE NRR/DRCH/HOLB NRR/DRSS/PRPB NRR/DSSA/SRXB RES/DSIR/EIB EXTERNAL: EG&G BRYCE,J.H ,NRC PDR NSIC POOREgW.COPIES LTTR ENCL 1 1 1 1 2 2 1'2 2 1 1 1 1 1 1 2 2 1 1 1 1 2 2 1 1 1 1 RECIPIENT ID CODE/NAME PD5 PD ACRS AEOD/DSP/TPAB NRR/DE/EELB NRR/DORS/OEAB NRR/DRCH/HICB NRR/DRIL/RPEB RR~SSA/SPLB G FILE 02 RGN FILE 01 L ST LOBBY WARD NSIC MURPHYiG.A NUDOCS FULL TXT COPIES LTTR ENCL 1 1 2"2 1 1 1.1 1 1 1, 1 1 1.1 1 1 1 1 1 1 1 1'1 1 1 NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE!CONTACT TFIE DOCUMEN'I'ONTROL DI>V, ROOM Pl-37 (EXT.504-2065)TO ELIMINATE YOUR NAME FROM DISTRI!3UTION LISTS FOR DOCUMENTS YOU DON'T NEED!~~~>allnsCj~

em m FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 32 ENCL 32 WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O.Bm 968~3000 George Wasbtngton Way~Richland, Wasbfngton 99352-0968

~(5093 372-5000 March 18, 1993 G02-93-063 Docket No.50-397 Document C'ontrol Desk U.S.Nuclear Regulatory Commission Washington, D.C.20555

SUBJECT:

NUCLEAR PLANT WNP-2, OPERATING LICENSE NPF-21 LICENSEE EVENT REPORT NO.91-019-01

REFERENCE:

Letter G02-93-062, dated March 18, 1993, JW Baker (SS)to JB Martin (NRC),"Seismic Monitoring Instrumentation".-

Transmitted herewith is Licensee Event Report No.91-019-01 for the WNP-2 Plant.This revised report is submitted in response to the report requirements of 10CFR50.73 and discusses the items of reportability, corrective action taken, and action taken to preclude recurrence.

This revision removes a further corrective action to submit a Technical Specification change request to allow for relocation of the seismic monitor.Sincerely,.W, Baker WNP-2 Plant Manager (Mail Drop 927M)JWB/CLF/my 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)Mr.J.W.Clifford, NRC 9303220230 9303ie PDR ADOCK 050003'P7 8 PDR LICENSEE Evlk REPORT (LER)AGILITY NAHE (I)Washin ton Nuclear Plant-Unit 2 DOCKET HUHB R ()PAGE (3)0 5 0 0 0 3 9 7 I OF 4 ITLE (4)TECHNICAL SPECIFICATION VIOLATION FOR FAILURE TO REPORT OUT OF SERVICE TIME OF SEISMIC MONITOR EVENT DATE 5 LER HUMBER 6 REPORT DATE 7)OTHER FACILITIES INVOLVED 8 MONTH DAY YEAR YEAR SEQUENTIAL NUMBER E VISION UMBER MOHTH DAY YEAR FACILITY NAMES CKE NUMB R (5)0 7 1 6 9 1 9 1 0 I 9 0 I 0 0 0 000 PERATIHG ODE (9)ONER LEVEL (10)50.73 (a)(2)(I v)50.73(a)(2)(v) 50.73(a)(2)(vii) 50.73(a)(2)(viii)(A) 50.73(a)(2)(viii)(B)

M.73(a)(2)(x) 20.405(C)50.36(c)(1) 50.36(c)(2)

X 50.73(a)(2)(i) 50.73(a)(2)(ii) 50.73(a)(2)(iii) 77.71(b)73.73(c)THER (Specify in Abstract elow and in Text, NRC Form 366A)0.402(b)20.405(a)(1)(i) 20.405(a)(l)(ii) 20.405(a}(i)(iii}

20.405(a)(1)(iv) 20.405(a)(1)(v)LICENSEE CONTACT FOR THIS LER (12 TELEPHONE NUMBER MIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREHENTS OF 10 CFR 5: (Check one or more of the following)

(11)4 CL Fies, Licensing Engineer REA CODE 5 0 9 7 7-4 1 4 7 COMPLETE OHE LINE FOR EACH COHPONEHT FAILURE DESCRIBED IH THIS REPORT (13)CAUSE SYSTEM COHPOHEHT MANUFACTURER EPORTABLE 0 NPRDS CAUSE SYSTEH COHPONEHT HAHUFACTURER EPORTABLE TO NPRDS SUPPLEHEHTAL REPORT EXPECTED (14)YES (If yes, complete EXPECTED SUBHISSION DATE)HO TRACT (I OI EXPECTED SUBHISSIDH HOHTH DAY YEAR ATE (15)On July 16, 1991 Plant Management determined that the failure to report five periods in excess of 30 days of inoperability of the Reactor Vessel Head Seismic Monitor was a violation of WNP-2 Plant Technical Specifications.

During each of the past five annual Maintenance and Refueling Outages, beginning in 1986, the Monitor was inoperable due to the Space Frame, to which the Monitor is attached, being moved to a temporary location so that refueling and in-vessel outage work could be accomplished.

There are two root causes for this event.The design which located the Seismic Monitor on the Space Frame did not meet the standard Technical Specification requirement for the instrument to be operable at all times.The Plant Procedure used to remove the Space Frame had no steps to inform the Shift Manager of the inoperability of the Monitor.Corrective action includes revising the Plant procedure to include a step to notify the Shift Manager when the Space Frame is moved.There is no safety significance associated with this event because the Monitor has no safety immediate function.

LICENSEE EVENT REPOR ER).TEXT CONTINUATION AGILITY NANE (1)Washington Nuclear Plant-Unit 2 DOCKET.NUMBER (2)0 5 0 0 0 3 9 7 Year LER NUNBER (B)umber ev.No.AGE (3)1 19 01 2 F 4 ITLE (4)TECHNICAL SPECIFICATION VIOLATION FOR FAILURE TO REPORT OUT OF SERVICE TIME OF SEISMIC'ONITOR Pl n ndii n Power Level-000%Plant Mode-4-Cold Shutdown Evn D cri ti n On July 16, 1991 Plant Management determined that the failure to report the inoperability of the Reactor Vessel Head Seismic Monitor during five previous Maintenance and Refueling Outages was a violation of WNP-2 Plant Technical Specifications.

On May 16, 1991, during the R6 Maintenance and Refueling Outage a Plant System Engineer reported that the Reactor Vessel Head Seismic Monitor SEIS-TPA-1 had been inoperable for 30 days and that a Special Report to the NRC was required.Seismic Monitor SEIS-TPA-1 is attached to the Space Frame, a steel structure located between the Reactor Vessel'Head and the Containment Head Structures.

The Monitor SEIS-TPA-1 was inoperable because the Space Frame is moved and stored in a temporary location for refueling and in-vessel work activities.

The Special Report was sent to the Commission on May 24, 1991.(Reference Supply System Letter 602-91-107)

During the time of report preparation it was realized by the Compliance Engineer preparing the report that this instrument would also have been inoperable during each of the five previous Maintenance and Refueling Outages.The Compliance Supervisor directed that this information be included in the May 24, 1991 Special Report.Just prior to July 16, 1991 a NRC Resident Inspector requested that the reportability of this event per 10CFR50.73 be reviewed.This review was concluded on July 16, 1991 when Plant Management directed that this LER be prepared.Table 1 below lists the estimated times when the Monitor SEIS-TPA-1 was inoperable.

Estimated Times of Inoperability of SEIS-TPA-1 Maintenance and Refueling Outage Rl R3 R4 Estimated time of Inoperability of SEIS-TPA-1 April-May 1986 April-Jun'e 1987 May-June 1988 May-June 1989 May-June 1990 LICENSEE EVENT REPORTER)TEXT CONTINUATION AC1LITY NAME (1)Washington Nuclear Plant-Unit 2 DOCKET NUMBER (2)0 5 0 0 0 3 9 7 LER NUMBER (8)ear'/umber ev.No.1 19 01 AGE (3)3 F 4 ITLE (4)TECHNICAL SPECIFICATION VIOLATION FOR FAILURE TO REPORT OUT OF SERVICE TIME OF SEISMIC MONITOR mm I e rrectiv A i n None F herEvl i nand rr iv A i n A.'rther Evaluation 1.This event is reportable as a violation of WNP-2 Plant Technical Specification per 10CFR50,73(a)(2)(i)(B).

2.Technical Specification 3.3.7.2 requires the Reactor Head Vessel Head Seismic Monitor to be operable at all times.The specification also requires that: "With one or more of the seismic monitoring instruments inoperable for more than 30 days, in lieu of any other report-required by Specification 6.9.1, prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 10 days outlining the cause of the malfunction and the plans for restoring the instruments to operable status." This LER documents the failure to submit a Special Report for each of the previous Maintenance and Refueling Outages.3.The cause of, the delay in submitting an LER when this event was first discovered in May 1991 is Personnel Error.The Compliance Supervisor erroneously made an independent determination that reporting the information on previously missed and required Special Reports in the May 24, 1991 Special Report was sufficient and that an LER was not required.4.There are two root causes for this event.First, the design which located the Monitor on the Space Frame did not meet standard technical specification requirements which required the instrument to be operable, at all times.The second root cause is procedural inadequacy.

The Plant procedure which moved the Space Frame had no step to notify the Shift Manager of the inoperability of the Monitor.The Shift Manager is responsible for tracking compliance with Technical Specification Action Statements.

5.There were no structures, systems, or components inoperable at the beginning of this event that contributed to this event.B, F rther orrective Ac i n The Maintenance Procedure for moving the Space Frame was revised to include a requirement to notify the Shift Manager when SEIS-TPA-1 becomes inoperable.

LICENSEE EVENT REPORTER)TEXT CONTINUATION AGILITY NAME (1)Washington Nuclear Plant-Unit 2 OOCKET NUMBER (2)0 5 0 0 0 3 9 7 LER NUMBER (8)ear'(umber ev.No.1 19 01 AGE (3)4 F 4 ITLE (4)TECHNICAL SPECIFICATION VIOLATION FOR FAILURE TO REPORT OUT OF SERVICE TIME OF SEISMIC MONITOR afet i nifi n There is no safety significance associated with this event.The triaxial peak accelerograph SEIS-TPA-I is a sensitive wide band, low frequency, acceleration recording instrument.

Permanent records are scribed by diamond styli on replaceable metal plates.The peak acceleration is computed by multiplying the maximum excursion of the trace by the acceleration sensitivity of the recorder.This passive instrument is used to capture the response of the space frame, a steel structure located between the reactor vessel head and containment head structures.

The data collected is for subsequent engineering analysis and does not play a role in the immediate determination of Plant operability following a seismic event, Any loss of data can best be characterized as a lost opportunity to aid in the analysis to support a decision to restart should a significant seismic event have been experienced.

imilar Even There are no similar events pertaining to the failure to submit a Special Report when required by Plant Technical Specifications.

II Inf rm i Te R fern f system~om m~nen Reactor Vessel Head Seismic Monitor (SEIS-TPA-I)

Space Frame Reactor Vessel Head Containment Head Structures IN FRM RPV