ML19031B038

LER 1978-042-03 for Salem Unit 1 Excessive Trip Setpoint During Functional Test on No. 13 S/G Steam Flow Channel 1

ML19031B038
Person / Time
Site:	Salem
Issue date:	08/24/1978
From:	Librizzi F Public Service Electric & Gas Co
To:	Grier B NRC/IE, NRC Region 1
References
LER 1978-042-03
Download: ML19031B038 (4)

Text

PS~G e

Public Service Electric and Gas Company llilfGULATORV DOCKET fllE G~PV 80 Park Place Newark, N.J. 07101 Phone 201/622-7000 August 24, 1978 C.J r> '

Mr. Boyce H. Grier Director of USNRC ... */;

Off ice of Inspections and Enforcements  ;.****(_:

~~ ~L ~_:;j Region 1  :.cg~o 631 Park Avenue ;0 King of Prussia, Pennsylvania 19406 CJ rri

(/)

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 78-42/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.a, we are submitting Licensee Event Report for Reportable Occurrence 78-42/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours,

~

F. 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) 7:32370'"/..'::' .:;,

95-2001 300M 10*7<

Repor-t Number: 78-42/03L Report Date: 8/24/78 Occurrence Date: 8/8/78 Facility: Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 13 Steam Generator Steam Flow Channel I Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Operational Mode 1, Reactor Power 95%

DESCRIPTION OF OCCURRENCE:

At 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, while performing a functional test on No. 13 S/G Steam Flow Channel I, it was discovered that the trip setpoint was greater than allowed by Technical Specifications. Action Statement 14 for LCO 3.3.2.1 was implemented and instrumentation personnel continued to investigate such that the channel waq restored to operable status at 2115 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.047575e-4 months <br />.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The cause of this occurrence was failure of a Hagan Signal Isolator.

The cause of the signal isolator failure is under investigation.

This action is being followed on or 703.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.3.2.1, Action Statement No. 14 states that "with the number of operable channels one less than the total number of channels, operation may proceed until performance of the next re-quired channel functional test, provided the inoperable channel is placed in the tripp~d condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />".

No. 13 Steam Generator Steam Flow Channel I was placed in the tripped condition and remained in that condition throughout this event.

CORRECTIVE ACTION:

The failed signal- isolator was replaced from spares and the functional test completed to confirm operability. The failed signal isolator is under investigation.

LER 78-42/03L e 8/8/78 FAILURE DATA:

Signal Isolator Manufacturer: Hagan Controls Orville, Ohio Model: 4111083-002 Prepared by T. L. Spencer

~~~~~--=-~~~~~~~

Manager - s£1ern Generating Statio SORC Meeting No. 51-78

~~~~~~~~~~

NRCFOAM 366 e

U.S. NUCLEAR REGULATURY COMMISSION IZ*7Jl~"

LICENSEE EVENT REPORT CONTROL SLOCK:  !--I_....._....___._!_l_..._-!10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

~ I9 N IJ LICENSEE I. s I GCODE I s I 1 1410)1:5 o I o I - I o ILICENSE o I o I o I o I - I o I o 101 4 I 1 I 1 I 1 I 1 101 I I © 7 . 8 NUMBER 25 26 LICENSE TYPE JO 57 CA 58 7

CON'T

[2IIJ 7 8

~~~~~ LlJ© I o I s I oI o I o I 2 I 7 I 2 101 60 61 DOCKET NU.MBER 68 69 o I a I o I a I 7 I a I© I o I a I 2 I 4 I 7 I a IG)

EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

CEJil I While performing a functional test on 13 S/G Steam Flow Channel 1,

~ the trip setpoint was found to be higher than allowed by T.S .. Action1

~ Statement for LCO 3.3.2.1 was implemented. Instrumentation personnel

[TIIJ investigated and reworked the channel. This is the fourth occurrence

[)))) of this type.

ITJI]

[TI!]

7 8 9 80 SYSTEM CAUSE CAUSE COMP. VAL.VE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCOOE

[IT!] II IB I@ ~@w@ IIINIS!TIRIUI@ ~@ ~@

7 8 9 10 11 12 1J 18 19 20 SEQUENTIAL OCCUR A ENCE REPORT REVISION c::... LE R 'RO LVENT YE.A.A REPORT NO. COOE TYPE NC.

'..:.:,) REPORT NUMBER I7 I 8I 21 22 I

2J I IoI4 I 2 I 24 26 I /I 27 I oI 2S 3I 29 LiJ JO L=J 31 w

32

'f<i~~~ ~~w~ O~F;~~T S~~~~~N HOURS (22) A~B'3~i~T F~~~~B. PRIME COMP.

SUPPLIER COMPONENT MANUFACTURER LU@w@ ~@ .l!J@) I o Io Io fO I WC§ L:!...J@) ~ IH I 0 I 210  !@*

J3 34 35 J6 37 40 41 42 43 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @

• [II§] I The cause of this occurrence was the failure of a Hagan Controls ITTIJ Signal Isolator. The cause of fai1ure is under investigation. The o:::IIJ l.___s_i_.g:...n_a_l__i_s_o_l_a_t_o_r_w_a_s_r_e..P_l_a_c_e_d__a_n_d_t_h_e_*_f_u_ri_c_t_i_*o_n_a_l_t_e_s_t_w_a_s_c_o_*_rn.::.p_l_e_t_e_d_._ ___,

IJJIJ rr:m 7 8 9 80 FACILITY ST A TUS  % POWER OTHER STATUS tJo'I

\::::,J METI-100 OF OISCOVERY DISCOVERY DESCRIPTION ~

~

ITTIJ W@ I 0 I 9 IS l@I N/A I . L!Ll@I Functional Test 7 8 9 ACTIVITY 10 CONTENT 12 1"3

~

44 45 ---------------------------------------8--0 0

RELEASED OF RELEASE AMOUNT OF ACTIVITY ~ .LOCATION OF RELEASc@

• [ill] w@ W@l N/A N/A

. 7 8 9 10 11 44 80 PERSONNEL EXPOSURES t::;:;,,

• NUMBE. R ~TYPE Q DESCRIPTION lIIT] I oI o I o11k~W~~-* _N_./'"""A----------.-------------.....1 7 8 9 PERSONNEL INJURIES 12 13

~

80 NUMBER DESCRIPT10N~

l2:EJ I ol o I ol(§)~----------N='-"A~----------------------------------__;------------------~

8 9 11 12 80 LOSS OF OR OAMAGE TO FACILITY f'43\

TYPE DESCRIPTION \::::,1

~W@ a 9 NA

~10~-----------.----...-""'-"..;_--------------------------------------_;_-------------------s~o PUBLICITY (':;;\

ISSUEDr,:::;\ DESCRIPTION<& NRC USE ONL y "'

[ill] L.z.Jei ____.____N__/_A_ _ _ _ _ _ _ _ _ _ _ _ _ -----i I I II II I I I I I !J ~

7 8 9 10 68 69 20 ;

NAMEOFPREPARER ______ T___. __L~----s.o_e_n;.;;..;;;c_e~r--____________ PHONE: (609)365-7000 Salen Ext.~

528 "