Text

Responds to IE Bulletin 79-03 Re Use of Fusion Welded Stainless Steel Pipe Mfg by Youngstown.Shipment of 65 Spools at Callaway;70 at Wolf Creek
	ML19270G756
Person / Time
Site:	Callaway
Issue date:	05/11/1979
From:	Bryan J; UNION ELECTRIC CO.
To:	James Keppler; NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
	ULNRC-314, NUDOCS 7906190228
	Download: ML19270G756 (8)
	v • d • e

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UNION ELEECTRIC COMPANY 1901 GR ATIOT STRECT ST. Louis. MISSOURI May 11, 1979 m . u~ . .o o. . . .,

T.".* . ' ":'," .r. J..*; *. "a" . . . . .

Mr. James G. Neppler Regional Director, Region III United States Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC -314

Dear Mr. Keppler:

NUCLEAR REGULATORY CO!iMISSION IE BULLETIN NO. 79-03

Reference:

J. G. Keppler letter of March 12, 1979 Attachments: 1) Callaway Pipe Spool Listing Your letter dated Parch 12, 1979 forwarded for re-view and follow-up action IE 3ulletin No. 79-03 concerning ASME SA-312 type 304 fusion welded stainless steel pipe manu-factured by Youngstown Welding and Engineering Company prior to mid-November, 1978. The following data concerning the use or potential use of fusion welded pipe spools manufactured by Youngstown has been developed and is forwarded as an interim response to the subject Bulletin. This data has been developed generically to all five (5) SNUPPS Units. The need for addi-tional actions applicable specifically to Callaway Units 1 and 2 will be indicated in the follow-up response. The items below are numbered to coincide with action items listed in the NRC Bulletin.

1. A survey of current SNUPPS suppliers of pipe spools and preassembled pipe formations indicates that only Dravo Corporation, Marietta, Ohio has supplied pipe spools contain-ing fusion welded SA-312 type 304 pipe (without filler material) manufactured by Youngstown Welding and Engineering Company. To date, the total number of Dravo supplied pipe spools shipped to Callaway and Wolf Creek sites containing Youngstown-manufactured materials is 65 and 70, respectively. To date there have been no pipe spools of any type fabricated for or shipped to Ster-ling or Tyrone sites. Dravo is currently in the process of iden-tifying other spools in fabrication which they plan to ship to SNUPPS job-sites and which contain the referenced fusion welded pipe. This review process will continue until sufficient data has been obtained concerning the quality and acceptability of the Youngstown pipe being furnished for SNUPPS.

2. As indicated in Item 1, above, a total of 65 and 70 pipe spools containing fusion welded SA-312 type 304 pipe 7906190227 . g@

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DRAFT SLNRC 79-Page 2 manafactured by Youngstown have to date been shipped to Cal-laway and Wolf Creek sites, respectively. A listing of pipe spools indicating system application, spool /line numbers, size and design pressure / temperature has been prepared for the Callaway site and is enclosed with this .etter report.

A supplemental listing indicating pipe spools currently in tuLlication and subsequently shipped to Callaway will be fur-nished in a follow-up to this interim report.

3. Each longitudinal weld seam of fusion welded SA-312 type 304 pipe procured from Oravo which was manufactured by Youngstown and is presently cn site at Callaway will be ultra-sonically examined. This exanination will be limited only by accessibility considerations which according to prelim-inary site data will impact fewer than 10 percent of the total number of spools previously installed. The examination procedure, reference standards and acceptance criteria shall be in accordance with Paragraph NC-2552 of the 1977 edition of ASME Section III Code. Any repairs requiring welding shall be in accordance with Paragraph NC-2559 of the 1977 edition of ASME Section III Code. These on-site examinations will be per-formed over the next 60 days and the results tabulated for trans-mittal to NRC in a follow-up report.

Ultrasonic examinations will also be performed on all Callaway pipe spools presently in fabrication at Dravo con-taining fusion welded SA-312 type 304 pipe. Acceptance cri-teria and repair provisions will be the same as indicated above.

The results of these additional examinations will be included in the follow-up report.

4. This item is applicable to holders of operating licenses only.

5. The ultrasonic examinations being performed at Cal-laway are scheduled for completion within the next 60 days and will be referenced in the follow-up report. The results of ultrasonic examinations of pipe currently in fabrication at Dravo will also be referenced in this follow-up report which we expect to transmit to NRC by August 10, 1979. The need for further corrective actions will be indicated in the follow-up response.

Union Electric has also researched all safety-related pipe orders initiated by our constructor to see whether any ASME fusion welded SA-312 type 304 stainless steel pipe was purchased directly or indirectly from Youngstown. The investi-gation revealed that only one purchase order with McJunkin had pipe manufactured by Youngstown. The pipe furnished on this purchase order was manufactured subsequent to mid-November, 1978 under an acceptable quality system at Youngstown.

2346 288

DRAFT SLNRC 79-

. Page 3 If you require additional information in this mat-ter prior to the follow-up report, please contact us.

Very truly yours,

\ p;. r, . u" A::fa :

4 j . r. . . /

John K. Bryan '

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ML19270G756

Text

Dear Mr. Keppler:

Reference:

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