ML20055B743

Revised RO 369/82-39 Advising That Statement That Change Made to M-18 Insp Procedure Was Actually Made to Const Procedure 878 Which Controls Implementation of M-18 Insp Program.Mod Designed to Eliminate Bolt

ML20055B743
Person / Time
Site:	McGuire
Issue date:	07/12/1982
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
RO-369-82-39, NUDOCS 8207230231
Download: ML20055B743 (2)

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DUKE POWER COMPANY '

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, j POWER BUII. DING E $l, 422 ' Sourn Cnuncu SraEET, Cruumriz. N. C. asa4a Wi wM O. PAR M ER, J R. July 12, 1982 0 ,* h '

Wcr Patssocut TEL E PwoN t:AntA 704 Sf TAM PaooucTtoM 373-4)S3 i

Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: McGuire Nuclear Station Unit 1 Docket No. 50-369 l

Dear Mr. O'Reilly:

l In the attachment to Reportable Occurrence Report R0-369/82-39 under Corrective Action it is stated that a change has been made to the M-18 inspection procedure.

In fact, the change was made to Construction Procedure 878 which controls the implementation of the M-18 inspection program at McGuire. The new sentence ("The M-18 inspector will be responsible for restraints and laterial supports attaching to mechanical equipment including bolting to the equipment.") was incorporated into the construction procedure. Enclosed is a revised page 3 to the LER's attachment reflecting this correction. The originally submitted LER form does not contain this error and thus is still applicable. We regret any confusion or inconvenience this may have caused.

V y truly yours, l

t.=_, m d.

William O. Parker, Jr.

PBN/jfw Attachment cc: Director Records Center Office of Management and Program Analysis Institute of Nuclear Power Operations U. S. Nuclear Regulatory Commission 1820 Water Place Washington, D. C. 20555 Atlanta, Georgia 30339 Mr. P. R. Bemis Senior Resident Inspector-NRC McGuire Nuclear Station

[pfnCIAL COPY 8207230231 820712 PDR ADOCK 05000369 S PDR - . . _ . _ _ -. -

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Report No.-82-39 Page 3 (Revised 7/12/82)

Corrective Action: A modification was designed to eliminate the need for the bolts by closing the gap between the lugs and the angle iron, and strengthening

! the support.

Shims were installed between the seismic lugs and the angle iron. Plates were f then welded to the two existing plates adjacent to the shims. To compensate for j the new stresses, additional stiffener plates were welded on each side of the i existing stiffener plates with a 1/2" gap between the old and new plates.

! Document packages for the other four heat exchangers with top mounted seismic

supports were examined to insure that the mounting bolts had been installed and inspected. M-10 inspection forms that identified the mounting bolts were especially looked for, and were found for the Moderating Heat Exchangers', _ Letdown Reheat:. Heat Exchanger, and Letdown Chiller Heat Exchanger, but not for the Letdown Heat Exchanger. The Letdown Heat Exchanger was inspected and the mounting bolts were j verified to be in place. The ND heat exchangers are unique in that the seismic

! support steel is free standing and does not depend on the heat exchanger for 7 vertical support. Structural steel on the other heat exchangers depends on the

attachment bolts at the vessel for vertical support so the erection of the support requires installation of the bolts.

The inspection programs have been changed, since the ND heat exchangers were completed, to require the inspector to mark the construction drawings indicating which bolts and steel section s have been inspected. To prevent confusion on which inspection

, should cover bolting of structural steel to mechanical equipment, the following

, . statement has been added to construction procedure 878. "The M-18 inspector will be responsible for restraints and lateral supports attaching to mechanical equipment

. including bolting to the equipment." Construction procedure 878 controls implementation of the'M-18 inspection program at McGuire. The policy on inspection document prepara-tion has been modified to require preparation of the documents-before a job begins.

[: In this way uncompleted documents would identify outstanding inspection requirements.

i The modifications on the ND seismic supports were reviewed and the work inspected.

Q.A. document reviews will insure that' inspection documents are complete.

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