ML20217M021
| ML20217M021 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 09/20/1999 |
| From: | Seiken A NUCLEAR LOGISTICS, INC. (NLI) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-99 NCR-73-02, NUDOCS 9910270120 | |
| Download: ML20217M021 (2) | |
Text
- '
,.e NLI NUCLEAR LOGISTICS INC
, September 20,1999 NCR-73-02, Revision 3 Document Control Desk j
United States Nuclear Regulatory Commission I
Washington, DC 20555 j
FAX (301) 816-5151.
Subject:
Report of a Deviation Investigation Nuclear Logistics presents the following information in accordance with 10CFR21, 21.21(a)(2), which I
closes the investigation of a possible deviation.
I i)
Information submitted by:
Mr. Aron Seiken President Nuclear Logistics incorporated j
7450 Whitehall Street Fort Worth, TX 76118 Telephone:(817) 284-0077 Facsimile: (817) 590-0484 I
ii)
The item with the possible deviation was a NL1 DC Power Supply, PIN NLl-LGS-G-24-OV-R-8018.
'iii)
NLI has supplied these power supplies as Class E components.
~
iv)
NL1 arid PSE&G llope Creek personnel concur that the power supply over voltage protection circuit actuation was caused by the electrical circuit conditions unique the remote engine control panel. The following summarizes the investigation activities:
NL1 was unable to duplicate the power supply over voltage protection actuation during laboratory testing. To gain additional information regardit". the behavior of the power supply, NLI personnel traveled to Public Service Electric and Gas Company Hope Creek Generating Station to witness a start-up sequence of the diesel generator.
Prior to the start-up sequence, Hope Creek personnel verified the integrity of the power supply's input and output circuits. Additionally, a reverse-bias diode was placed across the coil of the High Priority Alarm Summary relay whose actuation was suspected of creating excessive noise in the remote engine control panel. During the' entire start-up sequence, very little noise was visible on the power supply DC output voltage line. Hope Creek personnel attributed the lack of electrical circuit noise in the remote engine control panel to the suppression diode, which was installed prior to the test.
v)
Supporting documentation will be provided in NLI file NCR-73, which is controlled in accordance with NLI Quality Assurance Program requirements.
~
vi)'
Power supplies m'odels with similai over voltage protection circuitry have been supplied as,'
f.
~
U safety-related components to the following facilities:
- 1) ~ Public Service Electric and Gas Company -
g\\ql a) NL1-LGS-FA-24-OV-R-8018 b) NLI-LGS-G-24-OV-R-8018
' 745o Whit. hall
- Fort Worth,TX 76118 15t"644 T.i. phon. (eir> 2 4-oo77. r.x (si7) s o-o484 4
9910270120 990920 $
PDR ADOCK 05000354 S
PDR<
c) NL1-LGS-G 24-OV-R-8018, Version 1 d) NLI-75-PS-3111
- 2) Florida' Power and Light j
a) LI-LGS-B 28' j
b) NLI LXS-C-15-R
]
- 3) Baltimore Gas and Electric j
a) NLI-LJS-10 OV b) NLI-LMF-28-OVMYR-3397-3 c) NLI-LMF-28-OVMY d) NLI-LXS-C-12-R
- 4) Omaha Public Power District a) NLI-LJS-10-5-OV -
- 5) Virginia Power Company i
a) NL1-LUD-16-16 NOTE: None for the NL1-L series power supplies with adjustable output voltages contain over voltage protection circuitry.
vii)
No NLI-L series power supply failures of a similar nature have been reported to NLI.
vii)
The conclusions drawn, as presented in this document, nave been discussed with the cognizant personnel at Public Service Electric and Gas Company.
Should you require clarification, or additional information, please contact Mr. Archie C. Bell or me.
VeryTrul Yours, Ai44/E' St.)
Aron Seiken President N_ _L I