05000263/LER-1980-011-01, /01T-0:on 800306,during Refueling Outage,Repairs to Outboard MSIV Stop Valve Revealed Flow Path Between Secondary Containment & Turbine Bldg When MSIV Poppet Was Pulled.Caused by Lack of Preventive Procedure Controls
| ML112900668 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 03/20/1980 |
| From: | Overlid T Northern States Power Co |
| To: | NRC/OI/RGN-III/FO |
| Shared Package | |
| ML112900669 | List: |
| References | |
| LER-80-011-01T, LER-80-11-1T, NUDOCS 8003250409 | |
| Download: ML112900668 (4) | |
| Event date: | |
|---|---|
| Report date: | |
| 2631980011R01 - NRC Website | |
text
REGULATORY *ORMATION DISTRIBUTION SYS)4 (RIDS)
ACCESSION NBR:8003250409 DOC.DATE: 80/03/20 NOTARIZED: NO FACIL:50-263 Monticello Nuclear Generating Plant, Northern States AUTH.NAME AUTHOR AFFILIATION OVERLID,T, Northern States Power Co, RECIP.NAME RECIPIENT AFFILIATION Region 3, Chicago, Office of the Director DOCKET #
050'00263 SUBJECT; LER 80-011/01T-0:on 800306,during refueling outagerepairs to outboard MSIV stop valve revealed flow oath between secondary containment & turbine bldg when MSIV Poppet was pulledCaused by lack of preventive pro.cedure controls.
DISTRIBUTION CODE: A0028 COPIES RECEIVED:LTR _t ENCL J SIZE:
TITLE; Incident Reports NOTES; RECIPIENT ID CODE/NAME ACTION:
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09 I&E 14 TA/EDO 16 EE14 18 PLANT SYS BR 20 AD PLANT SYS 23 ENGR BR 25 PWR SYS BR 27 OPERA LIC BR 29 AUX SYS BR AEOD HANAUER,S, JORDAN,E,/IE COPIES LTTR ENCL 4
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RECIPIENT ID CODE/NAME 02 NRC PDR 11 MPA 15 NOVAK/KNIEL 17 AD FOR ENGR 19 I&C SYS BR 22 REAC SAFT BR 24 KREGER 26 AD/SITE ANAL 28 ACDENT ANLYS AD/ORP-DOR DOUG MAY-TERA IRELANDR.
COPIES LTTR ENCL 1
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1 1
1 1
1 1
1 1
3 EXTERNAL:
03 LPDR 29 ACRS 1
16 1
16 04 NSIC WR 2 TOTAL NUMBER OF COPIES REQUIRED: LTTR 1
1 11 52 ENCL 52
NORTHERN STATES POWER COMPANY MINNEAPOLIS. MINNESOTA 55401 March 20, 1980 Mr J G Keppler Office of Inspection & Enforcement U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137
Dear Mr Keppler:
MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 Procedure Inadequacy - MSIV Maintenance The Licensee Event Report for this occurrence is reproduced on the back of this letter. Enclosed are three copies.
This event is reported in compliance with Technical Specification 6.7.B.l.f.
Procedural controls were not adequate to prevent fuel moves during main steam line isolation valve maintenance.
Yours very truly, L 0 Mayer, PE Manager of Nuclear Support Services LOM/DMM/ak cc: %t+rector, IE, USNRC (40)
Director, MIPC, USNRC (3)
MPCA Attn:
J W Ferman
- - over-80032 5003
NRC FORM 366 (7-77)
[ETI 7
8 CON'T 7
8 7
8 U. 6. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK:
I PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6
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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 REPORT L('o SOURCE l... 0l 510101012 16 L3 _0 1013101 61 810 I()l 013 1210 18 1J0 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES IDuring a refueling outage, while repairs of an outboard MSIV were in progress, a l
lcondition reportable under T.S..6.7.B.1.f occurred. Turbine stop valve work in l
Iprogress when the MSIV poppet was pulled allowed a flow path to exist between the I Isecondary containment and the turbine huilding.
There were no fuel moves in Iprngrpcc it i-hc ti NQ p-~r Qlo.ll iMi-l~r e"'~gntr.
NQ effa'-G 'n piihlh-. hP,11th or safety.
1 9
.80 9~
8 SYSTEM
CAUSE
CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE GID LS.W WO L-0 IzJ@
G zI z z I z I z I z IS LJ z
I 7
8 9
10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER/RO EVENT YEAR REPORT NO.
CODE TYPE NO.
NUMBER
. I W
21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP.
COMPONENT TAKEN ACTION ON PLANT METHOD HOURS 2
SUBMITTED FORM SUB.
SUPPLIER MANUFACTURER o o a
LJu IL oW olo J101 1
L[@@
Z l 9 1 9 1 9 33 34 35 36 J@
37 40 4142 43 44 47 f
CAUSE DESCRIPTION AND CORRECTIVE ACTIONS INo procedural controls to prevent fuel moves during interval between removing MSIV I Ipopper and ingtalltioni of MSTV lin plug':
Approprintf permannnal informel of I
Isignificance of occurrence. Job Supervisor instructed to obtain Shift Supervisor I lconcurrence prior to pulling MSTV poppet. MSTV repair procedure will be revised tol Is aire qproncry entainment intpgrity during MSTV work I
7 89 s
FACILITY METHOD OF STATUS
%POWER OTHERSTATUS DISCOVERY DISCOVERY DESCRIPTION EID5 LJ@ 1' 1010IL-A I LLJI Engineer Observation 7
8 9
10 12 13 44 45 46 s0 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE EE LzJ7 L Z131 NAII LiE I
NA I
NA 7
8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE
DESCRIPTION
Ei lololoOL z NA 7
8 9
11 12 13 PERSONNEL INJURIES NUMBER
DESCRIPTION
F0 l
l (aI NA 7
8 9
11 12 LOSS OF OR DAMAGE TO FACILITY TYPE
DESCRIPTION
JE I L
NA 1
7 8
9 10 PUBLICITY 80 ISSUED
DESCRIPTION
GE n
81 NA 7
8 9 10 6
98 80 45846 80 NAME OF PREPAREOR T
612) 295-5151 soi OO32+
80
NRC FOR (7-77) 7 8
CON'T 7
8 0 1 7
B M 346 U..
LEAR REGULATORY COMMISSION
- LICENSEE EVENT REPORT CONTROL BLOCK:
I G
(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6
IM IN IMINIPI 11 Iol ol -to lo to lo to 1-lol o101 41 11 11 1110DL..@iI 9
LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 REPORT i
N i
SOURCE " [L 0 1 51 0101012 16 13.T)lo 1310161 810 01121 0
- - 810 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 0 IDuring a refueling outage. while repairs of an outboard MSIV were in progress, a l
jcondition reportable under T.S. 6.7.B.1.f occurred. Turbine stop valve work in Inroaress when the MSIV poppet was pulled allowed a flow path to exist between the I
Isecondary containment and the turbine building.
There were no fuel moves in I
I rrgvc
~- -c.l-m thp
- rgujo' c
" 1 nr cp~l-Nq
,ff~p--
n-r.,,l 4',
1-1-.
or safety.
9 80 SYSTEM
CAUSE
CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE [9
IAa LJ @
@9 1 ZI zIz I
z z I zz I
WOS LW@
.1 7
8 9
10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER/RO EVENT YEAR REPORT NO.
CODE TYPE NO.
NUMBER L..L.
Lnl 11 11 LW L
LA L 2 1
22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP.
COMPONENT TAKEN ACTION ON PLANT METHOD HOURS
.22 SUBMITTED FORM SUB.
SUPPLIER MANUFACTURER
.L J @0 L.l LJ 1 01 010 10 1 LNJ@
J L^ l@ I Z 19 1919 lD 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS No procedural controls to prevent fuel moves during interval between removing MSIV I 1 poper nd ingtallation of MRTV linp pluig.
Approprintp ppremnnnl informed of I
Isignificance of occurrence, Job Supervisor instructed to obtain Shift Supervisor Iconcurrene prior to pulling MSTV poppet.
MSTV repair procedure will be revised tol 4 negiire qercnd.ry enntninment intagrity dilrinE MSTV work.
7 8
9 80 FACILITY METHOD OF STATUS
% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 5E
@ 0 10.0 lJJ INA 1
OIEngineer Observation 7
8 9
10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE EE L.
"IZ@ LJ 1 NA NA 7
8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE
DESCRIPTION
I 7 1U I U I U Iv L lLJB - NA1 7
8 9
11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION S 0T Inlolo Il NA 1
7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE
DESCRIPTION
LL Z
W I NA 7
8 9
10 80 PUBLICITY NRC USE ONLY O
ISSUE1 DESCRIPTIO1 7
8 9
10 68 69 80 0
NAME OF PREPARER T Overlid PHONE: (6t 1 2) 295-5151