ML112410912

LER 81-010/03L-0:on 810224,fan for Standby Filter Unit B Found Not Running During Operational Test.Caused by Personnel Error in Opening Breaker for Control Bldg Emergency Air Supply Fan.Personnel Reinstructed

ML112410912
Person / Time
Site:	Duane Arnold
Issue date:	03/25/1981
From:	Rager M IES Utilities, (Formerly Iowa Electric Light & Power Co)
To:	NRC/OI/RGN-III/FO
Shared Package
ML112410913	List: ML112410912 ML19350C241
References
LER-81-010-03L, LER-81-10-3L, NUDOCS 8103310679
Download: ML112410912 (4)

Text

REGULATORYNFORMATION DISTRIBUTION S TEM (RIDS)

ACCESSION NBR:8103310679 DOC.DATE: 81/03/25 NOTAR ED: NO DOCKET #

FACIL:50-331 Duane Arnold Energy Center, Iowa Electric Light & Pow 05000331 AUTH.NAME AUTHOR AFFILIATION PAGERM.S. Iowa Electric Light & Power Co.

RECIP.NAME. RECIPIENT AFFILIATION Region 3, Chicago, Office of the Director

SUBJECT:

LER 81-010/03L*0:on 810224,fan for standby filter unit B found not running during operational test.Caused by personnel error in opening breaker for control bldg emergency air supply fan.Personnel reinstructed.

DISTRIBUTION CODE: A002S COPIES RECEIVED:LTR -! ENCL j. SIZE:- I TITLE: Incident Reports NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTION: IPPOLITO,T, 04 3 3 INTERNAL: A/D COMP&STRU06 A/D ENV TECH 07 1 A/D MATL & QU08 A/D OP REACT009 1 A/D PLANT SYSIO A/D RAD PROT 11 1 A/D SFTY ASSE12. ACC EVAL BR 14 1 AEOD AEOD/DMU 3 ASLBP/JHARD AUX SYS BR 15 1 CHEM ENG BR 16 CONT SYS BR 17 1 CORE PERF BR 18 DIRENGINEERI20 1 DIR,HUM FAC 821 DIRSYS INTEG22 1, EFF TR SYS BR23 EQUIP QUAL BR25 1 GEOSCIENCES 26 I&C SYS BR 29 1 I&E 05 JORDANE,/IE 1 LIC GUID BR 30. MATL ENG SR 32 1 MECH ENG BR 33 MPA 3 NRC PDR 02 OP EX EVAL BR34 3 OR ASSESS BR 35 POWER SYS BR 36 1 R BRR39 REACT SYS BR 40 1 01 REL & RISK A 41 1 EVA42 STRUCT ENG BR44 1 SYS INTERAC 845 EXTERNAL: ACRS 46 16 16 LPDR 03 1 1 NSIC 05 1 1 4v I 19BA TOTAL NUMBER OF COPIES REQUIRED: LTTR 68 ENCL- 68

w Mw Iowa Electric Light and Ibwer Company March 25, 1981 DAEC-81-171 Mr. James G. Keppler, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission - Region III 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

Licensee Event Report No.81-010 (30 day)

File: A-118a

Dear Mr. Keppler:

In accordance with Appendix A to Operating License DPR-49, Technical Specifications and Bases for Duane Arnold Energy Center and Regulatory Guide 10.1, please find attached a copy of the subject Licensee Event Report. (Total of 3 copies transmitted).

Ve truly yours, Daniel L. Mineck Chief Engineer Duane Arnold Energy Center DLM/M$SR/pl Docket 50-331 attachment cc: Director, Office of Inspection and Enforcement (30)

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Director, Management Information and Program Control (3)

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 U. S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D. C. 20555 NRC Resident Inspector - DAEC Duane Arnold Enemv Center

• PO. Box 351

• Cedar Rpids, Iowa 52406 319/851-5621

NFIC FOR M 388 U. S. NUCLEAR REGULATORY COMMSSION 17-774 LICENSEE EVENT REPORT T

CONTROL 8LOCK: PLEASE ?RINT OR y"'i ALL REQUIRED INFORMATION)

Llj ! I1 1 01 1-1 ololololol-hono 03111 TIIL0.

7 8 9 LICENSCELICENS C NUMER 25 26 LICENSE TYPE 40 57 CAT sa

-CON'T E LL 8Z -1 10 5 10 [0 01 31 3 I COCK ETNUMSAR 6a L LTa 69 :VENT DATE 74 7S 01 31 21 5 8 1 REPORT DATE 80 EVENT OESCRIPTION AND PROSA8LE CONSEQUENCES

• ' . Durn surveillance testing of the.-Standb' Filter Units.(SBFU) the-a or SBFU "B"was found not runningduring an operational test. Investigati.....

on revealed the breaker for the Control BidL Emerq Air Supply Fan, 1V-SF

...30B,.. hadbeen opened byOperations personnel. Tech.Spec 3 a both trains of the SBFU to be operable during reactor operation. The "A" SBFU had previously been operationally tested sat. No previous occurrence s of this nature have been recorded.

I a89 80 SYSTEM CAUSE CAUSE COMP. VALVe CODE COoE SUBCOOE COMPCNENT CO0E SU8CO0E SUSCOOS SG LA (5 it 12 A ' B I L 1 0 WIEI R 13 IS Z LjD 20 7 3 S 10 19 O PRO rEVENT YEAR SEQUENTIAL REPORT NO.

of1 11 0 127 OCCURRENCE CODE 0L.

REPORT TYPE L

REVISION NO.

2uI 1 2 23 24 26 28 29 30 31 0

32 C7ION FUTURe EFFECT SHUTOOWN ATTACHMENT NPRO4 PRIMECOMPOMPONENT TAKEN ACTION ONPLANT METHCO HOURS SUBMITED FORM US. SUPPLIER MANUFACTURER 33 34 r[_@ IZJ 35 LzJ 36 1oool 1!

37 Qo LYNJ@ J 41 42 . 43 1J@ Z 10 111 47 CA;EE DESCRIPTION AND CORRECTIVE ACTIONSs 71 1 Personnel error. Preventative mainte nance on "A"SBFU required its break er be opened. Ops personnel inadvert ently ooened the "B" SBFU fan breake jr instead. This interrupted operatio nal run of "B"SBFU and caused B-tra

( in to be inop. Brkr open for aporox 10.5 hrs. Operational test completed I sat. Ops personnel reinstructed. Pla nt procedures will be reviewed.

FACILI METHOO Cf STATUS  % POWER OTHER STATUS OISCOVER V OISCOVERY OESCRIPTrOM 32 IJ[E Of 91 5I 1 NA SB j(ei Surveillance Testing 7 83 !0 12 tT 44 '5 80 s4 ACTIVt T CONTENT PELEASE0 0% R5EASE AMOUNT OF ACTIVITY LOCATION Of RELEA5E L7JLOLB INA 1 NA 1 3 9 to II 4 I45 80

• • SRONNEL ixPCSURE2 umiaEA 307Y OESCRIPTi N 1 .

S0 9

LOOIJO 11 !3 13 NA SO

?5SCSONNEL INJURES 7 8 Lo ol n W1 n I1 12 NA 80 LOSS OF OR OAMAGE TO XAC:LIT;Y TYPE ZESCRIP71ON 8 9 ZZli10 NA Ou8tlCITY NRC USE ONLY DOESCRIPTION 68 69 90

&opesy Matthew Si Raqe 319,851-5611

.DUANE ARNOLD ENERGY CENTER Iowa Electric.Light and Power Company Licensee Event Report - Supplemental Data Docket No. 050-0331 Reportaole Occurrence No: 8' 00 During surveillance testing of the Standby Filter Units (SBFU), the "B" SBFU was discovered to be not running during a 10-hour operational run. Investigation revealed that the breaker for the Control Building Emergency Air Supply Fan, IV-SF-30B, had been opened by Operations personnel. The breaker was closed and operational test restarted. The "B" SBFU was out of service for approximately 10.5 hours.

Technical Specification 3.10.A.3 requires both SBFUs to be operable during reactor operation. The "A" train of SBFU had previously completed its 10-hour operational.

test satisfactorily. No previous occurrences of this nature have been recorded.

Cause

Description:

Personnel error. Operations. personnel had begun the 10-hour operational run of the "B" SBFU when its breaker was mistakenly opened. Maintenance personnel had been instructed to perform lubrication on the "A" SBFU. To provide for their safety the breaker for that unit's fan was to be opened prior to maintenance. Poor communications between ops personnel resulted in the wrong breaker being opened.

Corrective Action:

Ops personnel discovered the "B" SBFU wasn't running at the scheduled completion of its 10-hour run. Investigation revealed the wrong breaker had been opened and not reclosed following maintenance. The breaker was closed and the operational test completed with satisfactory results. Plant procedures will be reviewed to determine if weaknesses which may have contributed to this event can be identified and eliminated.

Operations personnel have been reinstructed on the need to maintenance monitor, more on safety-related closely, equipment.

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