ML19269E306

Responds to IE Bulletin 79-03.To Date,There Have Been No Pipe Spools of Any Type Fabricated for or Shipped to Facilities

ML19269E306
Person / Time
Site:	Sterling, 05000484, 05000487
Issue date:	05/10/1979
From:	Arthur J ROCHESTER GAS & ELECTRIC CORP.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RLNRC-0026, RLNRC-26, NUDOCS 7906270195
Download: ML19269E306 (3)

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ROCHESTER GAS AND ELECTRIC CORPORATION

• 69 EAST AVENUE, ROCHESTER . N.Y . 14'349

. , . ; ,' O $c.2 oo May 10, 1979 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

SUBJECT:

IE Bulletin 79-03 RLNRC-0026 Docket No. 50-485

Dear Mr. Grier:

Your letter dated March 12, 1979 forwarded for review and follow-up action IE Bulletin No. 79-03 concerning ASME SA-312 type 304 fusion welded stainless steel pipe spools manufactured by Youngstown Welding and Engineering Company. 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 for all five (5) SNUPPS Units (Callaway I and II, Wolf Creek, Sterling and Tyrone). The need for additional actions applicable specifically to Sterling will be indicated in a 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 pre-assembled pipe formations indicates that only Dravo Corpora-tion, Marietta, Ohio has supplied pipe spools containing 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 Youngs-town-manufactured materials is 65 and 70, respectively. To date there have been no pipe spools of any type fabricated for or shipped to Sterling or Tyrone sites. Dravo is cur-rently in the process of identifying other spools in fabrica-tion which they plan to ship to SNUPPS job sites and which contain the referenced fusion welded pipe. This identifict tion process can be expected to continue over the next several months until sufficient data has been obtained concerning the quality and acceptability of the Youngstown pipe being furnished for SNUPPS.

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ROCHESTER GAS AND ELECTRIC CORP. SHEET NO.

DATE May 10, 1979 To Mr. Boyce H. Grier 2

2. As indicatec' in Item 1, above, a total of 65 and 70 pipe spools containing fusion welded SA-312 type 304 pipe manu-factured by Youngstown have to date been shipped to callaway 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 each of these two SNUPPS sites and is enclosed with this letter report. A supplemental listing indicating pipe spools currently in fabrication and subsequently shipped to either jobsite will be furnished in a follow-up to this interim report. No pipe spools for application at. the Sterling Site have been fabricated.

3. Each longitudinal weld seam of fusion welded SA-312 type 304 ,

pipe manufactured by Youngstown and presently on site at callaway and Wolf Creek plants will be ultrasonically examined.

This examination will be limited only by accessibility considerations which according to preliminary site data will impact fewer than 10 percent of the total number of spools previously installed. The examination procedure, a ference standards and acceptance criteria will be performed it accordance with Paragraph NC-2552 of the 1977 edition of the ASME Section III Code. Any repairs requiring welding will be made in accordance with paragraph NC-2559 of the 1977 edition of the ASME Section III Code.

Ultrasonic examinations will also be performed on all pipe spools presently in fabrication at Dravo containing fusion welded SA-312 type 304 pipe. Acceptance criteria and repair provisions will be the same as indicated above. The results of these additional examinations will be included in a follow-up report.

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

5. The ultrasonic examinations being performed at Callaway and Wolf Creek sites are scheduled for completion within the next 60 days and will be reported in a follow-up to this interim report. The results of ultrasonic examinations of pipe currently in fabrication at Dravo will also be reported in this follow-up report which is presently scheduled for 2133 360

ROCHESTER CAS AND ELECTRIC CORP. SHEET NO.

DATE May 10, 1979 To Mr. Boyce H. Grier 3 transmittal to NRC in August 1979. The need for further corrective actions will be indicated in the follow-up response.

incerely yours, i

Am J hn E. Arthur hief Engineer xc: C. R. Anderson Lex K. Larson N. A. Petrick Gerald Charnoff J. L. Turdera U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Operations Inspection Washington, DC 20555 0

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