ML19031B178
| ML19031B178 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 02/25/1977 |
| From: | Schneider F Public Service Electric & Gas Co |
| To: | O'Reilly J NRC/IE, NRC Region 1 |
| References | |
| LER 1977-010-01 | |
| Download: ML19031B178 (5) | |
Text
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~iegulaf ory Docket *File Frederick W. Schneider Vice President Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 201/622-7000 Production Mr. James P. O'Reilly Director of USNRC Of £ice of Inspections and Enforcements Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 Dear Mr.
O'~eilly:
LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77-10/3L February 25, 1977 Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 77-10/3L.
This report is required within thirty (30) days of the occurrence.
CC:
Director, Office of Inspection and Enforcement (30 copies)
Director, Office of Management Information and Program Control (3 copies)
Sincerely yours, oo:."
/
' Report Number:
Report Date:
Occurrence Date:
Facility 77-10/3L 2/4/77 2/1/77 Salem Generating Station 1R'egu!alory Docket fll@
-~
Publi.c Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:
No. 12 Containment Fan Coil Unit Inoperable CONDITIONS PRIOR TO OCCURRENCE:
Operational Mode 3, Primary Pressure: 2232 psig, Tave: 547°F DESCRIPTION OF OCCURRENCE:
On 1/30/77, flow indication on Control Room Bezel for No. 12 Contain-ment Fan Coil Unit showed 1200 gpm with the unit secured and service water isolation valve shut.
A work order was submitted to Performance Department to investigate and repair.
On 2/1/77 at 1610, No. 12 C.F.c.u.
- was declared inoperable and Technical Specification Action Statement for L.c.o. 3.6.2.3 was put in affect for the p_urpose of repairing valve 12SW223.
DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:
During periods when the Fan Coil Unit is shutdown, 12SW223 is the only valve which automatically shuts to secure service water flow through the unit.
Investigation revealed a broken eye bolt on the clevis con-nector between the actuator rod and the valve stem linkage, leaving the 12SW223 valve approximately 20% open at all times~
ANALYSIS OF OCCURRENCE:
During normal or emergency mode of operation of the Fan Coil Unit, 12SW223 controls the service water flow rat~ through the unit.
The 20% open position allowed sufficient service water flow for normal operation but restricted flow rate below necessary emergency condition requirements.
Technical Specification Action Statement 3.6.2.3 states that with one group of containment cooling fans inoperable, restore the inoperable group to operate status within 72-hcirirs oi be in Hot Shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
No.. 12 C.F.C.U. was declared oper-able within four hours, therefore, Technical Specifications were not violated.
At no time.was there any danger to the health and safety of the general public or site personnel.
Report No. 77-10/3L 2/4/77
--(.
CORRECTIVE ACTION:
The broken clevis eye bolt was replaced and the valve restroked in accordance with procedure l-PD-14.1.001.
The valve was tested and proper operation verified.
Work order #PD-1588 was initiated to Maintenance Department to have 12SW223 valve internals inspected for evidence of binding or wear.
FAILURE DATA:
This is the first occurrence of this type.
Manufacturer: Masoneilan International Model No. 3336300 10 inch ball valve Prepared by A. Kapple
~~~~~----"--=-~~~~
Manager ~ ~alem Generating Station SORC Meeting No.
14-77
~~~~~~~~
1-. ---- -"
CONTROL BLOCK LICENSEE NAME e
LICENSEE EVENT REPORT
- @~ulatorx QpcJ~~l fa
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6 LICENSE NUMBER LICENSE TYPE EVENT TYPE*
@El!N1J1s1G1s1~1
~50101*-10101010101-1 OI qJ k41 ll ll ll 1Jo W-UJ REPORT REPORT CATEGORY TVl'E SOURCE OOCKET NUMBER EVENT CATE REPORT CATE.
roTi1 coN'TlR..LQJ UJ L!J I 0 I 51 0 I -I 0 I 2 I 71 2J I 0 I 2 I 0 11 17 I 7 I I 0 I 2 I 0 I 4 I 7 I 7J r-ili 57 58 59 60 61 69
- 74.
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@liliv;::~~~R~~:: 1 operation, an abnormal service water flow rate was observe4 7
8 9 80
- .;>;;,~~~
- ?i~k
- ~;~.-
@E] I on #12 Containment Fan Coil Unit.
On 2/1/77 the Unit was declared in-J
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tolsJ~ able throughout the evolution.PR*~;is is the first occurrence of this tYPE[*
SYSTEM CAUSE COMPONENT COMPONENT (77-10/3L -?(l CODE CODE COMPONENT cooe SUP9LIER MANUFACTURER VIOLATION
)
@m I A I A I Lill IV I A. I LI Y I E.J.X.J llJ IM 11 12 I 0 I lliJ 7
8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION
~IJhe abnormally high service water flow rate was due to a broken clevis ey¢
@:fillbolt on the actuating rod for valve 12SW223. This allowed 12SW223 to remaj.n 7
89 80
[@]!approximately 20% open at all times. Examination of other components of I
7 89 80 FACILITY 1.1.1 STATUS L!J.!..J
[LJ.
7 ll 9
FORM OF
'JI.POWER OTHER STATUS I 01 01 0 I N/A 10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (iliJ LU L]J I
N/A 7
8 9
10 11 PERSONNEL EXPOSURES METMOOOF OISCOVERV CESCRIP'TION OISCOVERV I ~ I N/A I
44 45 46 80 I
LOCATION OF RELEASE I
I 44 45 80 r.r.:"I NUMBER TYPE OESCRIPTION L!.l:!JIOIOIOI lZJ l.__ __
~N=/~A=--------------,..---------=1 7
8 9 11 12 13 J
PERSONNEL INJURIES NUMBER OESCRIPTION (ili] I 0 I 0 I 0. I
._I :-------=N=/-=-A=-------------------=1 7
8 9 11 12 I
ao J
OFFSITE CONSEQUENCES
~19 N/A LOSS OR DAMAGE TO FACll.ITY J
TV~
OESCRIPTION Eli) I Z I I
N/A 1 s"S 10 80 PUBLICITY lilil 7 8~9-~~~------~--1.:J../-.C....-------~---------------...J r
ADDITIONAL FACTORS.
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8 GE 1
&~i----------""'.---~~--------~----~-----------~ao NAME: ______
A_._K_a_p=-=.p_l_e _______ _
PHONE: ( 6 09) 365-7 0 00 Ext. Salem-62:
--Re.port No. LER 77-10/3L *-
ilt CASUE DESCRIPTION (Continued) the valve operating linkage showed no excessive wear or mating surface clearance. - A work order has been initiated to have the valve internals inspected for possible binding or wear.
Model No. 3336300 - 10 inch ball valve.