05000270/LER-1980-003-01, /01T-0:on 800507,deborating Demineralizer Was Placed in Svc While Plant in Cold Shutdown & RCS Drained Down.Rcs Boron Concentration Reduced from 1,895 Ppm to 1,539 Ppm.Apparently Caused by Incorrect Chemistry Records

/01T-0:on 800507,deborating Demineralizer Was Placed in Svc While Plant in Cold Shutdown & RCS Drained Down.Rcs Boron Concentration Reduced from 1,895 Ppm to 1,539 Ppm.Apparently Caused by Incorrect Chemistry Records

ML16148A311
Person / Time
Site:	Oconee
Issue date:	06/05/1980
From:	Lewis S DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML16148A312	List: 05000270/LER-1980-003, Forwards LER 80-003/01T-0 05000270/LER-1980-003-01, /01T-0:on 800507,deborating Demineralizer Was Placed in Svc While Plant in Cold Shutdown & RCS Drained Down.Rcs Boron Concentration Reduced from 1,895 Ppm to 1,539 Ppm.Apparently Caused by Incorrect Chemistry Records
References
LER-80-003-01T, LER-80-3-1T, NUDOCS 8006110326
Download: ML16148A311 (2)

LER-1980-003, /01T-0:on 800507,deborating Demineralizer Was Placed in Svc While Plant in Cold Shutdown & RCS Drained Down.Rcs Boron Concentration Reduced from 1,895 Ppm to 1,539 Ppm.Apparently Caused by Incorrect Chemistry Records

Event date:
Report date:
2701980003R01 - NRC Website

text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8006110326 DOCDATE: 80/06/05 NOTARIZED: NO DOCKET #

FACIL:50-270 Oconee Nuclear Station, Unit 2, Duke Power Co.

05000270 AUTH.NAME AUTHOR AFFILIATION LEWISS.R,.

Duke Power Co.

RECIP.NAME:

RECIPIENT AFFILIATION Region 2, Atlanta, Office of the Director SUBJECT: LER 80-003/01T-0:on 800507,deborating demineralizer was placed in svc while plant in cold shutdown & RCS drained down,RCS boron concentration was reduced from 1895 ppm to 1539 ppm.Apparently caused by incorrect chemistry records.

DISTRIBUTION CODE: A0028 COPIESRECEIVED:LTR I ENCL SIZE:..

n TITLE: Incident Reports, NOTES:

RECIPIENT COPIES RECIPIENT, COPIES ID CODE/NAME LTTR ENCL I CODE/NAME LTTR ENCL ACTION:

05 BC <&

• 1 4

4 INTERNAL:

EGFIL 1

1 02 NRC PDR 1

1 09 2

2 1t MPA 3

3 15 NOVAK/KNIEL

1.

1.

16 EEB 1

1 17 AD FOR ENGR 1

1 18 PLANT SYS BR 1

1 19 I&C SYS BR 1

1 20 AD PLANT SYS 1

1 22 REAC SAFT BR 1

1 23 ENGR BR 1

I 24 KREGER 1

1 25 PWR SYS BR 1

1 26 AD/SITE:ANAL 1

1 27 OPERA LIC BR 1

1 28 ACDENT ANLYS 1

1 29 AUX SYS BR 1

1 AD/0RP-DOR 1

1 AEOD 10 10 BERLINGERC,.

3 3

DOUG MAY-TERA 1

1 HANAUERrS, 1

1 JORDANPE,/IE 1

1 EXTERNAL: 03 LPDR 1

1 04 NSIC 1

1 29 ACRS 16 16 JUN 12 1980 TOTAL NUMBER OF COPIES REQUIRED: LTTR 60 ENCL 60

0 0

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7-771 LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l 11Jl l

l l

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

EE Is I clNIE E 12 ()D 00 1 - 1 0 101 01 01 01 -1010 g 4 1(

l1. 1 0 10iJ 7

a 9

.LICENSEE CODE 14 15 LICENSE NUMBER 25 25 LICENSE Type 30 57 CAT 58 CONT REPORT SOuRCE LIji'10O 5 1 01 010 12171 1(D)10151 01718 10 1(s)101 610 151 810 1()

7 a

so 61 DOCKET NUMBER 8

69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES o 2 I A deborating demineralizer was placed in service while Ocnee 2 was at cold Fo31 shutdown and. the RCS was:.drained down. Chemistry records and the first r5J M4 sample indicated a boron concentration close to that of the RCS. However, oT51 RCS boron concentration was reduced from 1895 ppm to 1539 ppm. A substantial 056 concentration above that necessary for a 1% Ak/k shutdown margin was main tained. This incident was not considered to be significant with respect to o a I-safe operation, and the health and safety of the public were not affected.

SYSTEM

CAUSE

CAUSE CO CODE SUSCODE COMPONENT CODE SUBCODE SUBCOOE 9

(D Uc @ I Zi 1

1 DIEIMI INIX E(9 L

S DG 8

9a0 11 12 1318 19 20 LER/RO EVENTYEAR SEENTAL OCCURDENCE REPORT REVISION.

REP AEOR NT COD 810 NO.

'NUMBELS~

W-1010131 W

L oLJ Lii U-J ILB 4

2228 27 28 2

30 31 32 ATIN A

ENFFECT MT. 0 ATTACHMENT NPRO-A PRIME COMP COMPONENT TA C", O O NP IT ME HD 20U R 23 SUB ITED FORM SU B.

SuppLIER M ANUFACTURER 33 3

s36 37 41 42 4I 4 Z47ZIZ CAUSE DESCRIPTION AND CORRECriVE ACTIONS @o 42 44 0

ILApparently the chemistry records were not up-to-date.

It is possible that an 1-J I equilibrium demineralizer outlet concentration was not reached prior to taking [the first sample. Administrative controls will be developed concerning use L-of the demineralizers, including precluding use while the RCS is drained down.

7 89 FACILITYOFs STATUS SPOWER OTHER STATUS DIOE R

1 SFAISITYSNA U

DMETHCOD OPDSOEYDSCRIPTION

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l9 o10 NA IC

(

RCS Chemistry Sample Analysis ACTIVITY CO TENT 2

13 44 48 46 RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OP RELEASE EE-7 LJ Lz l

n 3

NA NA 7

8 9 10 45 PERSONNEL EXPOSURES sO 1 7

___NUMBER TYPE

DESCRIPTION

NA N

[

M0]

0 0 1 ofo g

(NA 7

8 9 11 17 13 PERSONNEL INJURIES s

ER DESCRIPTIONI 4

N II I0181 NA.

7 8

9 11 12 LOSS OF OR DAMAGE TO FACILITY so TYPE

DESCRIPTION

N IE Z zet NA 7

8 9

10 PUBLICITY s0 ISSUED

DESCRIPTION

NC USE ONLY [F2illLN.JNI NA 0

9 10 Ch mi tr Sapl Analysis9 s

NAME OF PREPARER R

sPHONE (704) 373-8285 8006110326