ML20024B635

Interim Deficiency Rept 82-10 Re Inadequate QA Provisions in Structural Steel Installation Insp Records.Initially Reported on 821119.Reinsp Continuing.Final Rept Will Be Issued by 840201

ML20024B635
Person / Time
Site:	Braidwood
Issue date:	07/01/1983
From:	Swartz E COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 6883N, 82-10, NUDOCS 8307110056
Download: ML20024B635 (2)

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O Commonwealth Edison

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.s July 1, 1983 Mr. James G. Keppler, Regional Administrator Region III U.S. Nuclear' Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

Braidwood Station Units 1 and 2 10 CFR 50.55(e) Interim Report Structural Steel Installation Records NRC Docket Nos. 50-456/457 Reference (a):

T. R. Tramm letter to J. G. Keppler dated December 30, 1982

Dear Mr. Keppler:

On November 19, 1982, Commonwealth Edison notified your office of a deficiency reportable pursuant to 10 CFR 50.55(e) regarding structural steel installation inspection records at our Braidwood Station.

Reference (a) provided an interim report concerning this matter to fulfill the thirty (30) day reporting requirements.

This deficiency was assigned Number 82-10.

In Reference (a), we indicated our expectations for completion of the inspection program and issuance of a final report by July 1, 1983.

The purpose of this letter is to advise your office that this re-inspection work is still in progress, and to provide an updated status of our activities.

Please address any questions that you may have concerning this matter to this office.

Very truly yours.9 l-p G-cc73 E. Douglas SwkrTz Nuclear Licensing Administrator cc:

RIII Inspector - Braidwood Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 N

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6883N 8307110056 830701 PDR ADOCK 05000456

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ATTACHMENT INTERIM' REPORT

. STRUCTURAL STEEL INSTALLATION = RECORDS BRAIDWOOD STATION UNITS'l and 2

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Description ~of Deficiency Duringia Site Quality Assurance review of contractors' work procedures it'was determined.that inadequate provisions exist to

ensure bolt; torque and weld inspection for structural steel

installation."'The provisions:for performing.the structural steel installation were found to be generally adequate.

The deficiency

- involves only inspections which should have been performed by a scontractor different.from the installation contractor.-

- This deficiency 11s limited'to Newberg's'. installation.of block wall columns and miscellaneous structural steel in the w

Auxiliary Building.

A record review 'for accountability of field ~

' bolt and weld-inspection reports' identified 753 welded connections

of 2028 total and-399 bolted connections of 825 totalfwith missing

' inspection reports.

Of_these totals, 113 welded and 149 bolted-

-connections' are still : accessible for inspection.

Analysis of Safety Implications

~ Lack of independent inspection of these connections does not imply that the connections are in any way defective.

The safety implications can only be established with a case-by-case analysis of the'as-found~ conditions of individual connections.

Corrective Action Taken' All of Newberg's. accessible welded and bolted connections will be: inspected.. Bolt and weld inspection on inaccessible

-connections will be ont. a statistical basis for-those connections with missing records.

A' statistical sampling plan has been established in accordance with Military Standard 1050 for a multiple 1

sampling' method.- The acceptance-criteria.will be based on yielding ~

l a 95%. confidence /95% reliability levels..This program will verify

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L nstallation'using the same procedure requirements applied during i

' initial installation.

h Status of Resolution' L

All accessible welded and bolted connections have been

re-inspected in accordance with G. K. Newberg's approved Quality l

Control. Procedure Section 31, " Erection and Inspection of Structural' L

Steel", and.have been determined _to-be, or reworked to be acceptable.: Re-inspection work is currently in progress to determine acceptability of the inaccessible connections identified R

.by_.theLstatistical sampling-plan.

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Based upon the progress realized to date, Commonwealth.

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' Edison _ Company now anticipates final resolution by February 1, 1984 g

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at which. time a-final report will be issued.

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