05000331/LER-1981-004-03, /03L-0:on 810111,drywell Particulate Radiation Monitor B Failed Downscale.Caused by Condensate on NMC Model RAK-221F Radiation Element Re 8101B.Design Review Initiated & Particulate & Iodine Filters Examined Daily

/03L-0:on 810111,drywell Particulate Radiation Monitor B Failed Downscale.Caused by Condensate on NMC Model RAK-221F Radiation Element Re 8101B.Design Review Initiated & Particulate & Iodine Filters Examined Daily

ML112410873
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
ML112410874	List: 05000331/LER-1981-004, Forwards LER 81-004/03L-0 05000331/LER-1981-004-03, /03L-0:on 810111,drywell Particulate Radiation Monitor B Failed Downscale.Caused by Condensate on NMC Model RAK-221F Radiation Element Re 8101B.Design Review Initiated & Particulate & Iodine Filters Examined Daily
References
LER-81-004-03L, LER-81-4-3L, NUDOCS 8102120120
Download: ML112410873 (3)

LER-1981-004, /03L-0:on 810111,drywell Particulate Radiation Monitor B Failed Downscale.Caused by Condensate on NMC Model RAK-221F Radiation Element Re 8101B.Design Review Initiated & Particulate & Iodine Filters Examined Daily

Event date:
Report date:
3311981004R03 - NRC Website

text

=

REGULATO*)NFORMATION DISTRIBUTION TEM (RIDS)

ACCESSION NBR:8102120120.

DOCDATE: 81/02/05 NOTARIZED: NO DOCKET #

FACIL:50-331 Duane Arnold Energy Center, Iowa Electric Light & Pow 05000331 AUTH.NAME AUTHUR AFFILIATION

RAGERMS, Iowa Electric Light & Power Coo RECIP.NAMET RECIPIENT AFFILIATION Region 3, Chicago, Office of the Director

SUBJECT:

LER 81"004/03L-0:on 810111,drywell particulate radiation monitor 8 failed downscale.Caused by condensate on NMC Model RAK-221F radiation element RE 8101B,Design review initiated

& particulate.& iodine filters examined daily*

DISTRIBUTION CODE: A0028 TITLE: Incident Reports COPIES RECEIVED:LTR -ZENCL,

SIZE:.,

W NOTES:

RECIPIENT ID CODE/NAME, ACTION:

IPPOLITOT. 04 INTERNAL: A/D COMP&STRU06 A/ MATL & QU08 A/D PLANT SYSO.

A/D SFTY ASSE12 AEOD AUX SYS BR 15 CONT SYS BR 17 DIRDIV OF LIC DIRHUM FAC $21 EFF TR SYS BR23c GEOSCIENCES 26 I&E 05 LIC GUID BR

30.

MECH.ENG BR 33 NRC PDR 02 OR ASSESS BR 35.

SBR39 FILE 01

' 8FTYZ E VA 42 SYS INTERAC 845 COPIES LTTR ENCL 3

3 RECIPIENT ID CODE/NAME A/D ENV TECH 07 A/D OP REACT009 A/D RAD PROT 11 ACC EVAL BR 14 ASLBP/J.HARD CHEM ENG BR 16 CORE PERF BR 18 DIRENGINEERI20 DIRSYS INTEG22 EQUIP QUAL BR25 I&C SYS BR 29 JORDANE,/IE MATL ENG BR 32 MPA OP EX EVAL BR34 POWER.SYS BR 36 REACT SYS BR 40 REL & RISK A 41 STRUCT ENG BR44 COPIES LTTR ENCL 1

1 1

1 1

1 1

1 1

1 1

.1 1

3 35 1

1 1

1 EXTERNAL; ACRS NSIC 46 05i 16 1

16 1

LPDR 03 1

TERA:DOUG MAY 1

A.% At TOTAL NUMBER OF COPIES REQUIRED: LTTR

/

1 1

Lb 68 ENCL 68

Iowa Electric Light and Power Company

_U February 5, 1981 DAEC-81-82 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.81-004 (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 DLM/MSP/pJ 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 Huane Arnoid Energy Center

• PO. BoX 351

• Cedar Rapids, Iowa 52406

• 319/851-5611

NRCFOR (771~R 7

a CON'T 7

8 7

8 7

8 REVISION NO.

LOJ COMPONENT MANUFACTURER Ni - n 15@

4 17 i7' IThe cause was determined to be condensate on RE 8101B.

The moisture was TI removed from the detector prior to beinq reinstalled. The detector was 1 ource checked-sat. RE 81018 is an NMC model RAK-221F radiation element.

1]

Design review has been initiated As an interim measure HP personnel are 1 exaining the particulate and iodine filters once per day.

FACILITY 30 METHOO OF STATUS

% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION G

([

LJ I Q19 19 Ji NA I AJOiOperator Observation 7

8 9

10 12 11 44 45 46 30 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE EID LzJ @ LzJ l

NA I

NA 1

7 a

9 10 iI 4

s5 80 PERSONNEL ExPOSURES NUMBER TYPE

DESCRIPTION

m7 1 In Wo01 7 I@)

NA 7

8 9 I1 12 13 80 PERSONNEL INJURIES NUMBER DESCRPTION S 1 o oL01 NA I

7 8

9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

'T 1 I1I NA I

7 8

9 10 80 PUBLICITY NAC USE ONLY ISSUED

DESCRIPTION

7 8

9 10 68 69 80*.

319-851-5611 LICENSEE EVENT REPORT CONTROL SLOCK:

(PLEASE PRINT OR TYod ALL REQUIRED INFORMATION) lA ID A IC 11 10I 001 0 -1 0 10 1 Q0Q1 0 1 01 --0 0 (DI4111L.111 n

9 LICENSEE CODE 14 is LICENSE NUMBER 25 26 LICFNSE TYPE 30 57 AT 58 RR LL 10 15 10 0 1 01 313 1

0) 1 1 1 [ b 1t1 01 21 01 51 81 110 60 61 COCKEY NUMBER 6a 69 EVENT DATE 7

75 REPOAT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES During normal power operation the "B" Drywell Particulate Radiation Moni tor failed downscale. Redundant radiation monitor element RE 8101A had p Ireviously been declared inop. This placed the plant in a 7-day LCO in ac cordance with Tech Spec 3.6.C.2 which requires both the sump and air sam I pling systems be operable durinq reactor power neeration Mnisture on th 1

je detector is a repetitive problem. See LER 81-003,81-001, 80-038. 78-0 19, 77-04, and 77-03.

V80 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUSCODE COMPONENT CODE SUBCODE SUBCOCE:

cl IL@

E LE@ [

hi NI SI TI RI UI L J L7 9

to It 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT LERRO VENT YEAR REPORT NO.

cos Type (DNUMEl [a ll_

_-J 0I 0 41

-- 1 1 01 3 ILU1 1-N 2ME1R 2

23 24 25 27 29 20

1.

ACTION FUTr'pE EFFECT SuTOCwN A-TACHMENT' NI-C.4 PRIMEComm.

TAKEN ACTION ON PLANT METHOO HOURS 2

SUIMITTED FORM tU8.

SUPPLIER L..L1FJ I.

LLzO lo lato [

LLn I 0.@

Lt.JO LL.J@ 1 33 34 35 6

37 40 41 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS U. S. NUCLEAR REGULATORYV COMMISSION M 316 NAME OF PREPAAEA Matthew S-. Rager