ML20079G903

First Interim Significant Deficiency Rept 95 Re Failure of HPSI Pumps to Start.Shaft Bearings Shimmed & Binding Eliminated.Ge Evaluating Possible Design Deficiency.Next Rept Will Be Submitted by 840224

ML20079G903
Person / Time
Site:	Waterford
Issue date:	01/05/1984
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
95, W3K84-0028, W3K84-28, NUDOCS 8401230223
Download: ML20079G903 (3)

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, 's 142 DELARONDE STREET POWER & L1GHT P. O. BOX 6008

• NEW ORLEANS. LOUISIAiJA 70174. (504) 366-2345 EuSNEYSEP January 5, 1984 W3K84- 0028 Q-3-A35.07.95 Mr. John T. Collins Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012

REFERENCE:

Telecon C. N. Hooper (LP&L) and D. Hunnicut (NRC IV) on December 7, 1983

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SUBJECT:

Waterford SES Unit No. 3 JANI6 1984 Docket No. 50-382

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Significant Construction Deficiency No. 95 "HPSI Pumps A/AB failed to Start on SIAS" First Interim Report In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copies of the Interim Report on Significant Construction Deficiency No.

95, "HPSI Pumps A/AB Failed to Start on SIAS".

This item was previously identified as PRD No. 134.

Very truly yours, T. F. Gerrets Quality Assurance Manager TFG:CNH:VBR Attachment cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C.

20555 (15 copies) l 8401230223 840105

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. Mr.: John T. Collins January.5, 1984-

. W3K84- 0028 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 r

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INTERIM REPORT OF 4

SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 95 "HPSI PUMPS A/AB FAILED TO START ON SIAS" i

a INTE0DUCTIO,N I This report is submitted pursuant to 10CFR50.55(e).

It describes a deficiency 4 'v in 4.16V circuit breakers manufactured by General'qlectric and utilized in safety related systems.- This problem 1s considered reportable under the requirements of 10CFR50.55(e).. To the best of our knowledge, this problem has rst been identified to the Nuclear Regulatory Commission pursuant to 10CFR21.

s, DESCRIPTION OF PROBLEN During preoperatior11 testing the 4.16KV, 350 MVA Magna Blast breakers feeding

. the High Pressure Safety Injection Pumps A and AB failed to close on command.

The problem has been attributed to the failure of the trip latch cranks to return to the neutral position which caused the breakers to remain in the tripped condition. The. trip latches were found to be binding due to improperly aligned shaft bearings.. Proper bearing shimming is not addressed in the GE recommended maintenance.

SAFETY IMPLICATIONS i.

If lef t uncorrected, failure of the 4.16KV breakers to close would prevent operation of. safety-related eqdipment required for safe shutdown and accident mitigation.

I jICORRECTIVE ACTION Interim corrective action has been taken to shim the shaft bearings and

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eliminate binding. General' Electric has been contacted to evaluate problems

1. 7 with respect to a design deficiency and determine if other corrective action

-is required. We anticipate completion of this evaluation by January 30, 1984.

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~ An interim or final report will be submitted on or before February 24, 1984.

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