ML18107A344

Interim Part 21 Rept Re Premature Over Voltage Protection Actuation in Circuit Specific Application in Dc Power Supply.Testing & Evaluation Activities Will Be Completed on 990716

ML18107A344
Person / Time
Site:	Salem, Hope Creek, 05000355
Issue date:	06/01/1999
From:	Seiken A NUCLEAR LOGISTICS, INC. (NLI)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-99 NCR-73-02, NCR-73-2, NUDOCS 9906070115
Download: ML18107A344 (2)

Text

JUN-01-1999 10:42

• NL I NLI NUCLEAR LOGISTICS INC

• - 817 590 0484 P.01/01 June 1, 1999 NCR-73-02

..

Document Control Desk United States Regulatory Commission Washington, DC 20555 FAX (301).816-5151

Subject:

Interim Report of a Deviation Nuclear Logistics presents the following infonnation in accordance with 10CF.R21, §21.2l(a)(2)

. concerning a deviation, which has b~en identified.

i) Information submitted by: Mr. Aron Seiken Preside.nt Nuclear Logistics Incorporated 7450 Whitehall Street Fort Worth, TX 76118 Telephone: (817) 284-0077 Facsimile: (817) 590-0484 ii) The item with the deviation is a NLI DC Power Supply, PIN NLI-LGS-G-24-0V-R-8018.

iii) NL! has supplied these power supplies as Class lE components.

iv) The deviation, which has been identified, is premature over voltage protection actuation in a circuit specific application. The premature over voltage protection actuat~on occurred during diesel generator start up. Specifically, the premature over voltage protection actuation* occurs during diesel generator loading.

v) This issue was determined to be a deviation on April 19, 1999.

vi) These components have been supplied as safety*related components to the following facility:

1) Public Service Electric and Gas Company vii) To date, NLI has been unable to duplicate the premature over voltage protection actuation during laboratory testing. Data collection and additional testing is being performed to resol,.*e the 1/

deviation. If the premature over voltage protection actuation is determined to be the result of the power supply design, other NLI-L series power supplies will be tested to determine their

~iii!)' to similar conditions. Testing and evaluation activities will be completed on July viii) The results of testing to date has been discussed with the .cognizant personnel at the facility identified in section vi oftbis interim report.

Should you require clarification, or additional information, please contact Mr. Archie C. Bell or me.

Very T~.- Yours:_ j n_~,E~cf)~

ftR Aron Seiken President 7450 Whiteh-.11 *Fort Worth, TX 76118 Telephone (817) 284*0077

• Fax (817) 590-0484

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TOTAL P.01

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0'610111999

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• U.S. Nu.r Regulatory Commission Operations Cente.nt Report I

.*General Information or Other (PAR) Event# 35782

- Rep Org: NUCLEAR LOGISTICS INC Notification Date I Time: 06/01/1999 11 :07 (EDT)

Supplier: NUCLEAR LOGISTICS INC Event Date I Time: 04/19/1999 (CDT)

- Last Modification: 06/01/1999 Region: 4 Docket#:

City: FORT WORTH Agreement State: Yes County: License#:

State: TX NRC Notified by: SEIKEN (FAX) Notifications: VERN HODGE(FAX) NRR HQ Ops Officer: CHAUNCEY GOULD RICHARD CONTE R1 Emergency Class: NON EMERGENCY 10 CFR Section:

21.21 UNSPECIFIED PARAGRAPH 1

J PART 21 DEVIATION IN A NUCLEAR LOGISTICS INC (NLI) DC POWER SUPPLY.

A DEVIATION HAS BEEN IDENTIFIED IN A NLI DC POWER SUPPLY, P/N NLl-LGS-G-24-0V-R-8018 WHICH HAVE BEEN SUPPLIED AS A CLASS 1E COMPONENT, THAT ALLOWS A PREMATURE OVER VOLTAGE PROTEGllON ACTUATION TO OCCUR IN A CIRCUIT SPECIFIC APPLICATION. THIS CONDITION OCCURRED"b>URING DIESEL GENERATOR STARTUP, SPECIFICALLY DURING DIESEL GENERATOR LOADING. THIS*ISSUE W..AS DETERMINED TO BE A DEVIATION ON 4/19/99, HOWEVER, TO DATE NLI HAS NOT BEEN ABLE TO DUPLICATE THIS CONDITION DURING LABORATORY TESTING. DATA COLLECTION AND-ADDITIONAL TESTING IS BEING PERFORMED TO RESOLVE THE DEVIATION. IT THE PREMATURE OVER VOLTAGE PROTECTION ACTUATION IS DETERMINED TO BE THE RESULT OF THE POWER SUPPLY DESIGN, OTHER NLl-L SERIES POWER SUPPLIES WILL BE TESTED TO DETERMINE THEIR SUSCEPTIBILITY TO SIMILAR CONDITIONS. TESTING AND EVALUATION ACTIVITIES WILL BE COMPLETED ON 7/16/99. THESE COMPONENTS HAVE BEEN SUPPLIED AS SAFETY-RELATED COMPONENTS TO PUBLIC SERVICE ELECTRIC AND GAS COMPANY.