ML112410878

LER 81-003/03L-0:on 810108,drywell Particulate Radiation Element Re 8101B Found Inoperable.Caused by Sensor Failure Due to Condensation on Particulate Detector.New Radiation Element,Mylar Window & Beta Phosphor Installed

ML112410878
Person / Time
Site:	Duane Arnold
Issue date:	02/05/1981
From:	Rager M IES Utilities, (Formerly Iowa Electric Light & Power Co)
To:	NRC/OI/RGN-III/FO
Shared Package
ML112410879	List: ML112410878 ML20003B491
References
LER-81-003-03L, LER-81-3-3L, NUDOCS 8102120248
Download: ML112410878 (3)

Text

REGULATO NFORMATION DISTRIBUTION )TEM (RIDS)

ACCESSION NBR:8102120248 DOC.DATE: 81/02/05 NOTARIZED: NO DOCKET #

FACIL:50*331 Duane Arnold Energy Center, Iowa Electric Light & Pow 05000331 AUTH.NAME AUTHOR AFFILIATION RAGERrM,8, Iowa Electric Light & Power Co, RECIP.NAME RECIPIENT AFFILIATION Region 3, Chicago, Office of the Director

SUBJECT:

LER 81-003/03L*0:on 810108,drywell particulate radiationi element RE 81l0b found inoperable.Caused by sensor failure due to condensation on particulate detectorNew radiation elementmylar window & beta phosphor installed.

DISTRIBUTION CODE: A002S COPIES RECEIVED:LTR L ENCL. L SIZE; TITLE: Incident Reports NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME: LTTR ENCL ID CODE/NAME LTTR ENCL ACTION: IPPOLITOT. 04 3 3 INTERNAL: A/U COMP&STRU06 1 A/D ENV TECH 07 1' A/U MATL & 0008 1 A/D OP REACTOO9 1 A/D PLANT SYSIOd 1 A/D RAD'PROT 11 1 A/b SFTY ASSE12 1 ACC EVAL BR 14 1 AEUD) 3 ASLBP/J.HARD 1 AUX SYS BR 15 1 CHEM ENG BR 16 1 CONT SYS BR 11 1 CORE PERF BR 18 1 DIR,DIV OF LIC' 1 DIR,ENGINEERI2o 1 DIRHUM FAC $21: 1 DIRSYS INTEG2 1 EFF TR SYS-BR23I 1 EQUIP QUAL R25 1 GEbSCIENCES 26 1 I&C SYS BR 29 1 1&E 05. 2 JORDANE,/IE 1 LIC GUID BR 30 1 MATL ENO BR 32 1 MECH ENG BR 33i 1 MPA 3 NRC PDR 02 1 OP EX EVAL BR34 3 OR ASSESS BR 35 .1 POWER SYS BR 36 1 RAUA&&SS BR39 1 REACT SYS BR 40 1 1 REL & RISK A 41 1 SFTY PROG EVA42 1 STRUCT ENG BR44 1 SYS INTERAC B4$ i EXTERNAL: ACtKS 46 16 16 LPDR 03 1 1 NSIC 03 1 1 TERA:DOUG MAY 1 1 es 12 10, TOTAL NUMBER OF COPIES REWUIRLD: LTTR 68 ENCL 68

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Iowa Electric Light and Power Company February 5, 1981 DAEC-81-81 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.81-003 (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).

Very truly yours, Daniel L. Mineck Chief Engineer Duane Arnold Energy Center Docket 50-331 attachment

/kOOD S

DLM/MSR/pl

()

I/I 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 Rbsident Inspector - DAEC Duane Arnoid Enerqv Center

• PO. 3o,\: 351

• Cedar Rapids, Iowa 52406

• 319/851-5611

NRCVOR Mt LC E. S. NUCLEAR REGULATORY COMMISSION (7.77)

LICENSEE EVENT REPORT CONTROL 8LOCK: (PLEASE rRINT OR TY'd ALL REQUIRED INFORMATION) 7 8 9 I1A AC LICENSFE CODE 1 0 0-L o010 CNSE NUMaEA I0I-0b0o-lioW0DI 4111125 415 26 LICENSE TYPE 0 57 A CONT SOURCE 050 0 013311 _L 01 0881 _ 102101 58110 60 6; OOCKET NUMSER 6a 69 EVENT DATE 74 5 REPORT DATE do EVENT OESCRIPTION AfO PROBA8t.E CONSEQUENCES G I During normal operation, the"B" Drywell Patilte Radiation [l ment, RE 8101F; was unresponsive to a source check. Redundant element- R IE 8101A, had previously been declared inop. This placed the plant in a 7 I day LCO in accordance with Tech Spec 3.6.C.2 which requires both the sum 7 0T1 8 7

02]a jp and air sampling systems be operable during reactor pnwer opvrion 03 I Moisture on the radiation element and particulate detector is a recurrin g problem. See RO 77-03 77-04. 78-09. 8Q-038~anfL8LL~QOI 770

.80 8008 ad 1-0 ---- --.....----.--- -a so 9

SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCODE COMPONENT CODE SUSCODE SUBCOOe 9

(c Iil to l LE it I E]

12 il 13 N IT R I u IS TS 18

(.1,.] 8 19

..1,8 20 SEQUENTIAL OCCURRENCE REPORT A V ISl C REPORTNO. CODE TYPE NO ER/RO VENTYEA; L _J

--- ("0 1 01 3j (.7 L IQ0 3 ...L -. 32 21 22 .3 24 2 27 23 29 .31 AC ,JTURE EP. SHUTDCWN ATTACHMENT NPRO-4 PRIME COMP. COkPOCE TA ACTION ON Pm22 P .AT METHOO HOURS SUBMITTED FORM bu8. SUPPLIER MANUFAC JREA L

33 )W LEJ@

34 L5J@ LzJO 36 37L la IInI40 L.J lo 41 LNi 42 UJ 43 N LAl to 151s 47 CAUSE 0ESCRIPTION AND CORRECTIVE ACTIONS IC Condensate which had collected on RE 8101B and its particulate detector TI caused sensor failure. A new radiati on element. mylar window, and heta pn hosphor were installed to return the detector to operation. RE 8101B was OF OlOiP. -c ~n  !\JMC mcIrle~l I-Isource checked-sat prior to return t U I\L.~ ~

• VUJJ.L~ *3 4~

14RAK-221F radiation element. Desianr view has_been initiated.

' 83 F ACI LITY~

STATUS %POWeR OTHER STATUS DISCOVERY DISCOVERY DESCRI"tON I[_El@ 101 9 1 9 NA L\_ operator Observation 7 a 9 ACTIVITY RELEASED 0

CONTENT OF RELEASE 12 13 AMOUNT OF ACTIVITY C) 44 45 46 LOCATION OF RELEASE

[~6] L7J ( EzJ12 7 a 9 to II NA 45 NAI A PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 3 .

[~I 7 8 9 LoaLoLt.0LzJL i I? 13 8 I

PERSONNEL INJURIES NUMBER OESCR!PTION 41 8

I9O1 01 00 11 12 NA go 7

LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION 7

I Lz7J@l 8 9 10 NA 80 so PUBLICITY NRC USE ONLY ISSUED DESCRIPTION 2 NvI1 NA 7 8 9 10 68 69 so*

NAME OF PREPARERP Matthew S, Rager P E 319-851-5611