ML20090B950

Final Deficiency Rept 171 Re Failure of Emergency Diesel Generator a to Start on Initiation of ESF Actuation Signal. Initially Reported on 840530.Evaluation Indicates Condition Not Reportable Per 10CFR50.55(e)

ML20090B950
Person / Time
Site:	Waterford
Issue date:	06/29/1984
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
171, W3K84-1507, NUDOCS 8407130084
Download: ML20090B950 (2)

Text

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l 142 DELARONDE STREET POWER & LIGHT P O Box 6008 = NEW ORLEANS. LOUISIANA 70174 . (504) 366 2345 UTILITIES SYSTEM June 29, 1984 W3K84- 1507 Q-3-A35.07 i: ,

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i-Mr. John T. Collins Jll 101984  !

Regional Administrator, Region IV U. S. Nuclear Regulatory Commission .

M 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012

REFERENCE:

Telecon C. N. Hooper (LP&L) And M. Murphy (NRC IV) on May 30, 1984

SUBJECT:

Waterford SES Unit No. 3 Docket No. 50-382 l Potentially Reportable Deficiency No. 171

" Failure of Emergency Diesel Generator (EDG) "A" to Start on Initiation of ESFAS" Final Report 1

1 On May 30, 1984, a failure of the EDG "A" to start on initiation of an Emergency Safety Features Actuation Signal (ESFAS) was reported as PRD No.

171. Further evaluation of the previously described condition indicates this condition is not considered reportable pursuant to 10CFR50.55(e).

Evaluation Troubleshooting indicated that the cable leads connected to one of the two Emergency Start circuits were landed on plastic screws. A detailed investigation was conducted into work and testing, which had been performed, on the EDG in the past eight months. It is felt that the plastic screws were installed during troubleshooting conducted during the period May 3-28, 1984.

Although, one signal was rendered inoperative due to the use of plastic screws an independent circuit would have caused EDG "A" to start and operate, if a valid ESFAS was present. In addition EDG "B" would have been available.

8407130084 840629 PDR S ADOCK 05000382 T. s -17 PDR

Mr. John T. Collins June 29, 1984 W3K84-1507 Page 2 The plastic screws were replaced with metal screws and EDG "A" successfully started utilizing an ESFAS signal. Plant personnel have received instruction concerning the use of procedure UNT-5-004, " Wire Removal and Jumper Control."

Based on the above evaluation LP&L considers this condition is not reportable pursuant to 10CFR50.55(e).

Very truly yours, T. F. Gerrets Corporate Quality Assurance Manager TFG:CNH:VBR cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Director Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. E. L. Blake Shaw, Pittman, Potts & Trowbridge 1800 M Street, N.W.

Washington, D.C. 20036 Mr. W. M. Stevenson Monroe & Lemann 1424 Whitney Building New Orleans,' Louisiana 70130 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 Mr. W. A. Cross 7910 Woodmont Avenue Suite 1200 Bethesda, Maryland 20814

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