ML19031B178

LER 1977-010-01 for Salem, Unit 1 No. 12 Containment Fan Coil Unit Inoperable

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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~iegulafory Docket *File Frederick W. Schneider Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 201/622-7000 Vice President Production February 25, 1977 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 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.

Sincerely yours,

/

CC: Director, Office of Inspection * ,.. ** **. oo:." - -

and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies)

' Report Number: 77-10/3L Report Date: 2/4/77 1 R'egu!alory Docket fll@

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Occurrence Date: 2/1/77 Facility Salem Generating Station 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

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e LICENSEE EVENT REPORT

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fa CONTROL BLOCK 6

LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE 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 r-ili 57 58 UJ 59 L!J 60 I 0 I 51 0 I -I 0 I 2 I 71 2J 61 I 0 I 2 I 0 11 17 I 7 I I 0 I 2 I 0 I 4 I 7 I 7J 69 74. 75

• • -:*.;\\\<~ * @liliv;::~~~R~~:: 1 operation, an abnormal service water flow rate was observe4

.* .... '* '* . ... . 7 8 9

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    ~;~.- @E] I on #12 Containment Fan Coil Unit. On 2/1/77 the Unit was declared in- J 80

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>,:*;:-:._.*, ,:::".:\~>*. tolsJ~ able throughout the evolution.PR*~;is is the first occurrence of this tYPE[*

SYSTEM CODE CAUSE CODE COMPONENT cooe COMPONENT SUP9LIER COMPONENT MANUFACTURER VIOLATION (77-10/3L -?(l )

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@m I A I A I Lill 8 9 10 11 IV I A. I LI Y I E.J.X.J 12 17 llJ 43 IM 11 12 I 0 I 44 47 lliJ 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 METMOOOF 1.1.1 STATUS 'JI.POWER OTHER STATUS OISCOVERV OISCOVERV CESCRIP'TION L!J.!..J 7 ll

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9 I 01 01 0 I 10 12 13 N/A 44 I ~

45 I

46 N/A .

80 I

FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE (iliJ 7 8 LU 9

L]J 10 I

11 N/A 44 I I45 80 I

PERSONNEL EXPOSURES r.r.:"I NUMBER TYPE OESCRIPTION L!.l:!JIOIOIOI 7 8 9 11 lZJ 12 l.___ _~N=/~A=--------------,..---------=1 13 J PERSONNEL INJURIES NUMBER OESCRIPTION (ili]8 I90 I 0 I 0.11 I ._I12:-------=N=/-=-A=-------------------=1 I 7 ao OFFSITE CONSEQUENCES

~1 9 .. N/A J LOSS OR DAMAGE TO FACll.ITY TV~ OESCRIPTION Eli)s"S IZ I I N/A 1 10 J PUBLICITY 7lilil8~9-~~~------~--1.:J../-.C....-------~---------------...J r * ** "':." . 80 ADDITIONAL FACTORS.

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1 GE&~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. Masoneilan International Inc.

Model No. 3336300 - 10 inch ball valve.