05000272/LER-2077-043-03, Inoperability of Level Channel Due to a Failed Transmitter

From kanterella
Jump to navigation Jump to search
Inoperability of Level Channel Due to a Failed Transmitter
ML19031B561
Person / Time
Site: Salem  PSEG icon.png
Issue date: 06/28/1977
From: Librizzi F
Public Service Electric & Gas Co
To: O'Reilly J
NRC/IE, NRC Region 1
References
LER 1977-043-03
Download: ML19031B561 (4)
v • d • e


LER-2077-043, Inoperability of Level Channel Due to a Failed Transmitter
Event date:
Report date:
2722077043R03 - NRC Website
v • d • e

text

.....,

~ _,, -

OPS~~

Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 Phone 201 /622-7000 Mr. James P. O'Reilly Director of USNRC Off ice of Inspections and Enforcements Region 1 631 Park Avenue King of Prussia~ Pennsylvania 19406

Dear Mr. O'Reilly:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77-43/03L June 28, 1977 (R\\egu\\atory Docket fl\\e Pursuant to the requirements of Salem.Generating Station Unit No. 1 Technical Specif icati"ons, Section 6. 9.1, we are submitting Licensee Event Report for Reportable Occurrence 77-43/03L.

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, f.P~~

F. P. Librizzi General Manager -

Electric Production 77 :l 9:304:31. l The Energy People I

Report Number:

Report Date:

Occurrence Date:

Facility:

77-43/03L 6/21/77 6/17/77 Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey* 08038 IDENTIFICATION OF OCCURRENCE:

No. 12 Steam Generator Level Channel III Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Operational Mode 3, Reactor Coolant System:

530°F, 2200 psig DESCRIPTION OF OCCURRENCE:

At 0623 hours0.00721 days <br />0.173 hours <br />0.00103 weeks <br />2.370515e-4 months <br />, No. 12 Steam Generator Level Channel III was declared inoperable due to the differential pressure transmitter failing high.

Channel III was placed in the tripped condition and Action Statement No. 7 for LCO 3.3.1.1 was implemented.

At 2110 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br />, on 6/17/77, the failed transmitter had been replaced and No. 12 S/G Level Channel III was declared operable.

Action Statement No. 7 for LCO 3.3~1.l was terminated.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The output of the differential pressure transmitter had failed high.

The transmitter output would not respond to a f1P signal.

The specific cause of the transmitter failure is not known at this time.

This failure is being followed on Deficiency Report No. PD-400.

ANALYSIS OF OCCURRENCE:

Action Statement No. 7 for LCO 3.3.1.1 states that with the number of operable channels one less than the total number of channels, startup and/or power operation may proceed until the performance of the next required channel functional test provided the inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

No. 12 Stearn Generator Level Channel III was placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and remained in that condition until it was returned to service at 2110 hour0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br /> on 6/17/77, 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.

"* -~ IiER Report No. 77-4.03L 6/21/77

CORRECTIVE ACTION

The failed /::.P transmitter was replaced from spares.

The new transmitter was calibrated and found satisfactory.

No. 12 S/G Level Channel III was declared operable and Action Statement No. 7 for LCO 3.3.1.1 was terminated.

FAILURE DATA:

DIFFERENTIAL PRESSURE TRANSMITTER Manufacturer:

Model:

Serial:

output:

ITT Barton Monterey Park, California 386 268 4-20 ma.

Prepared by~~~T~.__;;S~p_e~n~c~e~r~~~

Manager -

S SORC Meeting No.~~~~6~6_-~7~7;__~-

Station

--~-. :... :--

LICENSEE EVENT REPORT-LER 77-43 /03L.--_J 6i21/77 CONTROL BLOCK 6

LICENSEE LICENSE EVENT NAME LICENSE NUMBER TVPE TY.PE

@]!]~N1J:1s_1G1s1~1

~5010_1-101010101-01-101qJ ~411111 ll l:Jo ~

REPORT REPORT CATEGORY TVl'E SOURCE OOCKET NUMSER EVENT CATE REPORT CATE roTtl CCN'TI I

I lLJ UJ I 0 I 51 0 I -I 0 I 2 I 71 21 I 0 I 6 I 1 I 7 17 I 7 I I 0 I 6 I 2 l l I 7 17J

~

57 sa

  • 59 so s1 ea 69 u

15 EVENT OESCRIPTION

@ID I Du~ing Mode III operation, No. 12 S/G Level Channel III was declared in-I

. 7 8 g*

80

@))

operable. due to a failed b.P transmitter.

All redundant level channels 7

8 9

@))

were operable. *The b.P transnµ.tt~r was replaced from spares and tested.

1 s'Q""---------...----------'---------------------------------------------------,.,i [filiJ I Testing declared the channel" operable arid Action Statement was terminated.!

7 8 9

@fill This 1

a 9 is the second occurrence of this type. (Ref. 76-22/031) 80 This event:

1*

SYSTEM COOE

@TIJ!C IC I 7

8 9 10

CAUSE

COOE lliJ n

CAUSE DESCRIPTION COMPONENT COOE IIINISITIIil!LJ 12 17 PRIME COMPONENT SUPPLIER*

l.lJ 43 COMPONENT MANUFACTURER IB I 0 18 10 I 44 47 VIOLATION

. (77-43/03Laff lNJ 48 roTa1 I The specific cause of the transmitter failure is not known at this time. I

~9 80 12.12.J

.7 89

~

[@].

7 8~9------------------~,~------------------------------------------------------=180

  • . FACILITY STATUS

[!El LDJ.

1 a

9 FORM OF

'!lo POWER IO IO IO I.

10 12 METHOOOF OTHEfl STATUS OISCOVERV

'~~-N-"-/A~~__.I ~

13 44 45 DISCOVERY DESCRIPTION

'N/A 46 80 ACTIVITY CONTENT RELEASEO OF REL.EASE AMOUNT OF ACTIVITY [2:li]

L!.J

~ I N/A I

r LOCATION o'NiA"EASE I

7 8

9 10 11 444

~s=----------__;,----...:--------------=1so PERSONNEL EXPOSURES NUMBER*

TYPE OESCRIPTION GE l 0 I 0 I 0 I lZJ I

N/A I

1 a 9 11 12

-.130:-------~~=----------------------------------------_,,.,,so

.PERSONNEL INJURIES NUMBER

- OESCRIPTION ITEJ1010101 7

a 9 11 NA 12 OFFSITE CONSEQUENCES

~~19 ~~~~~~~--.::.:..Nl~A-=--~~~----~~~~~~~~~~--dJ LOSS OR DAMAGE TO FACILITY TYPE CESCRIPTION GJ!l1z1 I

N/A j

1 a'§"""""'

~folr-"------------------==-=-----___;------------..---------------------~i!iSd PUBLICITY l2E 7 8~9 _________________ _.....,,_.=>--------------------------------------~80 AOOITIONAL FACTORS Ci]!]

,.., N/.A I.'*:

7 8~9.-----------------'--"-......;...:..;.__:.;':--:--,,.-,-....-'----..--------------------------------~

um 7 S~i.--------------------------------------------------------o,,.,!90

'*I.'

NAME: ___________ """T~

  • .....;;L;;...;:.. *.....;;S:;,.;o--=e""n~c=e-=r.__ ___ _

PHONE: (609) 365-7000 Ext. Salem 528

Retrieved from "https://kanterella.com/w/index.php?title=05000272/LER-2077-043-03,_Inoperability_of_Level_Channel_Due_to_a_Failed_Transmitter&oldid=4938629"