ML18031A350

Interim Deficiency Rept Re Unauthorized Welding of Pipe Hanger Assembly to Reactor Pressure Vessel.Incident Being Investigated.Corrective Action Will Be Taken

ML18031A350
Person / Time
Site:	Susquehanna
Issue date:	02/01/1980
From:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
840-4, NUDOCS 8002050552
Download: ML18031A350 (4)

Text

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REGULA fORY IN MATION orsTRIBUTroN sysTE Rros)

AccEssroN NBR:80020soss2 ooc,oATE'. 80/02/01 NoTARIzEoi NO oocKET 0 i AL'Ir.:50 387 Susquehanna

" Steam Electric.,

' Stationi Onit l~ Pennsylva Ob000387 AOTH.NAME AUTt)OR AFFILLA'ALON cORt'Is', A, iv, Pennsylvania Power It L,ight Co.

RECKi NAME RECIPIENT AFI ILLATION

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GHlFRg B ~ H ~ Region ii Phi ladelphiag Qf fice of the Director

SUBJECT:

Interim deficiency rept re unauthorized weldfng of pipe taken' ass'embly bange'r to SSES I reactor pressure vessel'o Incident being investigated for cause ~ 'Corrective" action wi)) be

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oISTHIBUTrON cooE: B019B cOPrEs RECEIVED:LTR ENcL srzE:

TITLE: Construction Deficiency"Aeport (10CFA50.558)

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PPa IL TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONE: (215) 821 ~ 5151 NORMAN W. CURTIS Vice President Engineering IL Construction 821-5381 February 1, 1980 Mr. Boyce H. Grier Director, Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 17406 SUSQUEHANNA STEAM ELECTRIC STATION INTERIM REPORT OF A DEFICIENCY RESULTING FROM THE UNAUTHORIZED WELDING OF AN ATTACHMENT TO THE UNIT Prl RPV DOCKET NO: 50-387 LICENSE NO: CPPR-101 ER 100450 FILE 840-4 PLA-446

Dear Mr. Grier:

This serves to confirm a verbal notification of the subject deficiency which was subsequently efficially conveyed to NRC Resident Inspector R. Gallo by A. R. Sabol on 1/31/80. The deficiency, which was recorded in Bechtel NCR 5241 and brought to PPGL's attention on 1/30/80, results from Bechtel Power Corporation's unauthorized attachment, by welding, of a pipe hanger assembly to the SSES Unit Sl reactor pressure vessel (RPV) .

The deficiency, reportable under the provisions of 10CFR50.55(e), involves a continuous Lru fillet weld attachment of a I5"x6"xl015" carbon steel plate of Hanger Assembly SPA-804 to the exterior surface of the Unit 51 RPV at elevation 782'-3" and asmuth 35 . The hanger assembly is identified as H-19 on a small piping isometric, SP-DCA-137-4H, for field run piping.

A deviation to specifications exists because welding, grinding or cutting is strictly prohibited by G.E. specifications unless there has been prior written permission granted by G.E. Since this requirement was not met by Bechtel and since the nonconformance is of such significance as to constitute a deviation which could create a substantial safety hazard and since the Unit Sl RPV has been accepted by PPaL, PPGL terms the deviation reportable under the provision of 10CFR Part 21 as. well as 10CFR 50.55(e).

Further, since the nonconformance is in direct violation of G.E. specifications and a generic precautionary statement written on February 2, 1979, by the General Electric Resident Site Manager to the Bechtel Field Construction Managerr Port ll008080 S QM PENNSYLVANIA POWER IL LIGHT COMPANY

Mr. Boyce H. Grier February 1, 1980 PP&L will investigate the incident to its fullest and will evaluate the elements responsible for causing the deviation and will take appropriate corrective action.

You will be advised, accordingly, of the resolution of the deficiency and corrective action and date for a final definitive report as they are developed.

Very truly yours, N. W. Curtis Vice President-Engineering a Construction ARS:mcb cc: Mr. Victor Stello (15 copies)

Director-Office of Inspection 6 Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. G. McDonald, Director (1)

Office of Management Information a Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Robert M. Gallo U. S. Nuclear Regulatory Commission P O. Box 52 Shickshinny> Pennsylvania 18655