ML19260C948

Forwards Final Deficiency Rept Re Gulf & Western Preassembly Formations

ML19260C948
Person / Time
Site:	Wolf Creek, Callaway, Sterling
Issue date:	11/29/1979
From:	Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19260C947	List: ML19260C948 ML19260C951
References
SLNRC-79-20, NUDOCS 8002070168
Download: ML19260C948 (2)

Text

. .

' *

. .

, SNUPPS Standardized Nuclear Unit 6 Power Plant System 5 Choke Cherry Road Nicholas A. Petrick Rockvme, Maryland 20850 Executive Director (301)869 8010 November 29, 1979 SLNRC 79- 20 FILE: 0491.10.2/M-206 SUBJ: Gulf & Western Preassembly For-mations: SNUPPS Units 1 (Wolf Creek and 2 Callaway 1

/Mr. Boyce Grier Director, Region 1 Office of Inspection and Enforcement U. S. Nuclear Regulatory Conmission 631 Park Avenue King of Prussia, Pennsylvania 19406 Ref: STN 50-482 STN 50-483 STN 50-485 STN 50-586

Dear Mr. Grier:

On November 2,1979, the Nuclear Regulatory Commission IE Region III was informed by Union Electric of deficiencies in three (3) pre-assembly piping formations at Callaway site. These deficiencies were reported by telecon to Ms. Jolene DuBry of Region III pursuant to the requirements of 10CFR50.55(e). Since that date and, based upon examinations of other formations involving both Callaway and Wolf Creek Units, these deficirricies are considered to be generic in nature and therefore applicable to all SNUPPS units.

Enclosed with this letter is a report of the referenced preassembly formations. This report describes the deficiencies in preassembly fabrication, inspection, and NDE; provides a brief chronology of related events; summarizes potential safety implications resulting from these deficiencies and outlines follow-up corrective actior.s that have been initiated. Follow-up actions to rework on site and, where necessary, repair Gulf & Western furnished preassembly formations are being initiated by the jobsite . constructors and will be processed in accordance with existing site rework procedures and controls. No further work by Gulf & Western (G&W) on safety-related preassembly formations for other SNUPPS Units; i.e. Sterling or Callaway No. 2, will be authorized by SNUPPS without demonstr.ation of substantial

-

improvements on the part of G&W in welding, NDE, QA and management controls.

1937 025

.

800207o jg y

, SLNRC 79-20

-

Page Two , -

.

The deficiencies described in the enclosed report have also indicated need for improvements in Bechtel and Code Authorized Nuclear Inspector (ANI) surveillance and inspection functions. Actions to strengthen the Bechtel effort have been initiated. Steps to re-examine the ANI function are being established and will be pursued separately.

Veryhtruly yours,

-

%w Nicholas A. Petrick SJS/bds/la4

Enclosure:

Final Report on Gulf & Western Preassembly Formations, cc: Mr. James G. Keppler, Director, Region III, USNRC Mr. Carl V. Seyfrit, Director, Region IV, USNRC Mr. John G. Davis, Acting Director, Office of Inspection &

Enforcement, Wash., D.C.

1937 026