ML19031B055

LER 1977-036-01 for Salem Unit 1 Pressurizer Pressure Decreased to Below DNB Limit of LCO 3.2.5

ML19031B055
Person / Time
Site:	Salem
Issue date:	06/02/1977
From:	Librizzi F Public Service Electric & Gas Co
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1977-036-01
Download: ML19031B055 (4)

Text

PS~Ge Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 Phone 201/622-7000 June 2, 1977

Dear Mr. O'Reilly:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77-36/03L 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 ,77-36/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, J f~L-YY'

Y.'

Frank P. Librizzi General Manager -

Electric Production CC Director, Office of Inspection and Enforcement (30 copies}

Director, Office of Management Information and Program Control

(.3 copies}

The Energy People 95-2001 300M 8-75

Report Number: , -e36/03L

" Report Date: 5/16/77

• Occurrence Date: 5/12/77 Facility Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

DNB Parameter Outside Technical Specification Limits (Pressurizer Pressure)

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1, Reactor Power 90%

DESCRIPTION OF OCCURRENCE:

At 0830 hours0.00961 days <br />0.231 hours <br />0.00137 weeks <br />3.15815e-4 months <br />, pressurizer pressure decreased to 2150 psig. Technical Specification Action Statement 3.2.5 was implemented by the Shift Super-visor. At 1230 hours0.0142 days <br />0.342 hours <br />0.00203 weeks <br />4.68015e-4 months <br />, valve 1PS3 (Pressurizer Spray Valve) was isolated.

The pressurizer pressure returned to normal and the action statement was terminated.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

A pneumatic valve operator adjustment problem caused 1PS3 to remain off of its closed seat. Continuous spray flow through the valve caused the pressurizer pressure to decrease below the 2220 psia allowed by Technical Specification 3.2.5.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.2.5 states that with any DNB parameter ex-ceeding its limit, restore the parameter to within its limit within two (2) hours or reduce thermal power to less than 5% of rated thermal power within the next four (4) hours. The pressurizer pressure was restored to within its DNB limit within the time allowed by the Techni-cal Specification, therefore, the LCO was not violated. At no time was there any danger to the health and safety of the general public or site personnel.

CORRECTIVE ACTION:

The "zero" position (fully closed) on the pneumatic valve operator was reset. The valve was restroked with satisfactory results. The valve leakage terminated. and valve 1PS3 was returned to service.

-5/16/77 FAILURE DATA:

Valve 1PS3 Size: 4-inch, Air Operated Type: Dl00-160-2.5 Manufacturer: Copes-Vulcan Prepared by T. L. Spencer Manager - Sal~m Generating Station SORC Meeting No. 54-77

e LICENSEE EVENT REPORT e LER 77-36/03L

• 5/16/77 CONTROL BLOC~ I 6

LICENSES: LICENSE EVENT NAME: LICENSE NUM6E!'I TYPE TYPE

@E4N I JI SIG IS I ~1 J o IO 1-1 o IO Io IO IO 1-1. OI 5

qJ Js 41 11 11 11 l.Jo . ~

REPORT REPORT C:ATEGORY T'l'll'E SOURCE OOCl<C:T NUMBER

• EVENT OATE REPORT CATE l'Ol1lccN'TlPIOI lLJ ~ 1015101-101217121 \015\11217171 101s111617171

~ 57 . ;a 5S 00 61 6a 69 74 75 86 EVENT OESCRIPTlON

@li} I. Dur in*g *Mode 1 operation, pressurizer pressure decreased to below the DNB I 7 8 9 so II§] limit of LCO 3.2.5. Valve 1PS3 was found leaking through and was isolated.

7 8 9

@E] I Valve lPSl was operable throughout this event. Valve 1PS3 was restroked 7 8 9 This is the first occurrence of this type.

J

@J§JI and tested satisfactorily.  !

7 8 9 ao (77-36/03L)

~8~9~~~~~~~~~~~~~~~~~P-R-IM-E~~~~~~~~~~~~--,~~~__,~~__,~-80~

7 SYSTEM CAUSE COMPONENT COMPONENT cooe: cooe: COMPONENT COOE SUPPLIER MANUFACTURER VIOLATlON

@El1CIJI ~ IV!AILJVIOL.J ~ lCJ6j315J lliJ 7 8 9 10 11 12 17 43 44 47 48 CAUSc DESCRIPTION

~  ! Valve operator adjustment problem caused leakage through spray valve. which J

~I 9

decreased pressurizer nressure. 4-inch. Type Dl00-160-2.5, Copes-Vulcan. I 7 89 ~

7[D£l8~9~~~~~~~~~~--,,.-~~~~~~~~~~~~~~~~~~~--,~~~~~~~~90~

FACll..ITY METMOO OF STATUS ""POWER OTMl::R STATUS OISCOVERY OISCOVS:RY OS:SCfllPTION

[ili]

7 a w.

9 IO I 91 01 10 l:Z l~_N.!U..,L.._;/A...___--11 13 44 LaJ 45 N/A FORM OF ACTIVITY CONTENT REL£ASEO CF REL.EASE AMOUNT CF ACTIVITY LOCATION OF REL.EASE

[ili] ~ lEJ I N/A I \~------N~/A _________-=1!

1 a 9

• 10 11 44 45 80 PSASONNEL EXPOSURES NUMBE.R TYPE OESC.RIPTION

[ili]tO as 101011l ~ NA

~lJ,-~~~-=-:..L-;:..::....~~~~~~~~~~~~~~~~~~~~~~~~--.~

1 12 30 PERSONNEL INJURIES NUMBER OESC.RIPTION GEJlO!O!OI N A 1 a9 11 12 OFFSIT<! CONScQUENC::s M .

LOSS OR CAM AGE TO FA Cl LITY N A TY"P"E OC:SC!'llPTlON i,jslt;J ~~o----------~N~/=A_______________________________,..,JJ 7

~";;--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--1 89 ~

NAME: _ _ _ _ _ P_e=n:....:c""e=r'----------

T_.__L_._.;;;:S. . . PHONE; (609) 365-7000 Ext.Salem--52