ML20004F761

Second Interim Deficiency Rept Re Use of Unapproved Masonry Bits,Initially Reported on 810306.Prework Insp Hold Point Used to Ensure That Proper Drill Bits Are Used.Next Rept to Be Submitted by 811020

ML20004F761
Person / Time
Site:	Bellefonte
Issue date:	06/03/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8106220295
Download: ML20004F761 (2)

Text

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Mr. James P. O'Reilly, Director (T JU Office of Inspecticn and Enfcrcement 6; y,,, N 191991

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U.S. Nuclear Regulatory Comission ej *=5= ec Region II - Suite 3100 101 Marietta Street g^ [

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Atlanta, Georgia 30303 .

Dear Mr. O'Reilly:

BELLEFORE NUCLEAR PLANT UNITS 1 AND 2 - USE OF UNAPPROVED MASONRY BITS -

BLRD-50 438/81-22, BLRD-50 439/81 SECOND IEERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector J. Crienjak on March 6, 1987, in accordance with 10 CFR 50.55(e) as NCR 1396. An interia report was submitted on April 6,1981. Enclosed is our second interim report. We expect to submit cur next report by October 20, 1981.

If you have any questions concerning this matter, please get in touch with D. L. La=bert at FTS 857-2581.

Very truly yours,

-TENNESSEE VALLEY AUTHORITT

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L. M. Mills, Manager Nuclear Regulaticn and. Safety Enclosure- ~

cc: Mr. Victor Stallo, Jr., Director (Enclosure-)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Comissicn Washington, DC 20555 Si t '

8100220995 -g. . . .

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. .- ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 USE OF UNAPPROVED MASCNRY Br"3 BLRD-50 438/81-22, BLRD-5U-439/81-24 10 CFR 50.55(e)

SECOND INTERIM REPORT Descriptien of Deficiency Attachment D of Quality Control Procedure BNP-OCP-2.8 specifies sizes of masonry drill bits to be used when installing wedge bolts. In order to ensure that these si:es are not exceeded, all carbide-tipped masonry drill bits should be ordered as engineering-centrolled material, which requires the bits to be checked for maximum size.

Hcwever, at least three orders have been received as construction material and not engineering-controlled material. Therefore, there is a possibility that wedge bolt anchors have been installed u. sing masonry drill bits which exceed the marhum size specified.

Interim Prcyress TVA has instructed all crafts to check their- stock of masonry bits, and all bits which did not have a unique stamp on the shank (signifying their acceptance for installing wedge bolt anchors) were returned to the Quality Control Records Unit (QCRU) trailer. T7A has instructed all employees who order conscruction materials that all masonry drill bits must be ordered as engineering-centro 11ed material.

TVA plans to incorporate this provisien into the appropriate CCP's.

, Based upon the cumber of bits mturned, the number ordered, and the number oversized, additional investigatierr is: needed before dispositen of this nonconformance. ,

At the present to further ensure that proper- drill bits are used, a-prework inspection hold point is used. This requires that an engineer measure any bit before its use.

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