ML20084B606

Final Significant Const Deficiency Rept 104 Re Wiring Errors Discovered During Preoperational Testing.Initially Reported on 840301.Caused by Inadequate Controls Over Wiring Installations or Design Changes.Wiring Corrected

ML20084B606
Person / Time
Site:	Waterford
Issue date:	04/12/1984
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
104, W3K84-0846, W3K84-846, NUDOCS 8404260272
Download: ML20084B606 (3)

Text

.-

a t

LOUISIANA ,42 ottAnoNoe s1nEer POWER & LIGHT p o. Box 6008 . NEW ORLEANS. LOUISTANA 70174 . (504) 366-2345 MIDDLE SOUTH unuTiES SYSTEM April 12, 1984 W3K_84- 0846

2 (gA35.07.104

. i; j:

Mr. John T. Collins Regional Administrator, Region IV { _

j U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012

REFERENCE:

Telecon C. Hooper (LP&L) and W. Crossman (NRC, Region IV) on March 1, 1984 Telecon C. Hooper (LP&L) and R. G. Taylor (NRC, Region IV) on March 30, 1984

SUBJECT:

Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 104

" Wiring Errors Discovered During Preoperational Testing (ESFAS)"

Final Report In accordance with the requirement of 10CFR50.55(e), we are hereby providing two copies of the Final Report of Significant Construction Deficiency No. 104,

" Wiring Errors Discovered During Preoperational Testing (ESFAS)". This deficiency was previously reported on PRD No. 158.

If you have any questions, please advise.

Very truly yours, l

/

• d T. F. Gerrets Corporate Quality Assurance Manager TFG:CNH:SSTG Enclosure cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 (15 copies) 8404260272 840412 1-PDR ADOCK 05000302 S ppg _ 7l

00 Mr. John T. Collins Aprk1 12, 1984 W3K84-0846 Page 2 cc: 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

~

..a

1. +

T 4

u  ? .u _ . : . . _ _ - :i

FINAL REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 104

" WIRING ERRORS DISCOVERED DURING PREOPERATIONAL TESTING (ESFAS)"

. INTRODUCTION

' This report is submitted pursuant to 10CFR50.55(e). It describes several cases of improperly terminated cables discovered during ESFAS preoperational testing at Waterford SES Unit No. 3.

To the best of our knowledge, this deficiency has not been reported to the USNRC pursuant to 10CFR21.

DESCRIPTION During performance of the Engineered Safety Features Actuation System (ESFAS) preoperational testing'(SPO-63-002) at Waterford SES Unit No. 3, the Startup Test Engineer noted that terminations for field cables were not consistent with the approved control wiring diagrams. During a subsequent review of the completed test procedure, the Joint Test Group (JTC) formally identified the engineer had been required to modify field installations in order for equipment to operate properly. The root cause of the improperly wired circuitry appears to have been inadequate controls over initial wiring installations or in subsequent design changes.

SAFETY IMPLICATIONS ,

The improperly terminated cables for the equipment and components' identified would have prevented their proper operation upon receipt of an emergency actuation signal.- Therefore, if lef t uncorrected, the safe operation of the plant would be adversely affected.

' CORRECTIVE' ACTION TAKEN^

I All identified wiring errors were corrected in accordance.with approved administrative procedures and retested. All retests.were conducted satisfactorily. To assess generic implications, two other major tests were-reviewed, SPO-66-001, " Plant Protection" and SIT-TP-200, " Integrated

Engineered Safety Features". -The generic review indicated similar'but fewer examples of wiring errors. These errors were also corrected utilizing inplace administrative controls and retesting was' conducted satisfactorily. ; Based upon these reviews -and our comprehensive testing program, LP&L . feels . confident that'all wiring; errors have been identified, corrected, and tested. . Increased.

administrative controls applied since mid ;1983 should prevent any' future occurrences of wiring errors.-

' This. report?is submitted as the Final Report.-

G- .

. _ . - 11