ML18057A556
| ML18057A556 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 11/05/1990 |
| From: | Slade G CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9011090343 | |
| Download: ML18057A556 (5) | |
Text
l'OWERINli MICHlliAN'S l'ROliRESS Palisades Nuclear Plant: 27780 Blue Star Memorial Highway, Covert, Ml 49043 November 5, 1990 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -
REQUEST FOR APPROVAL OF USE OF VISUAL WELD ACCEPTANCE CRITERIA I
REFERENCE:
Letter from James P Knight, NRR, to Douglas E Dutton, NCIG, dated+--~~
June 26, 1985.
SUBJECT - "Visual Weld Acceptance Criteria for Structural Welding at Nuclear Power Plants (VWAC) Revision 2" In 1985 co~respondence to the Nuclear Construction Issues Group referenced above, the NRC gave concurrence with the Visual Weld Acceptance Criteria (VWAC) and indicated that the NRC would approve application of these criteria for specific nuclear power plants on request for structural welding contained in NCIG-01 Revision 2.
CPCo wishes to adopt the VWAC for use duri~g the present steam generator replacement project at our Palisades Plant.
In accordance with the referenced letter, we request your approval to use the VWAC as discussed in the attached change to the Palisades Final Safety Analysis Report. There are no significant VWAC exceptions proposed, and it would be used only on uncoated weldments.
The regional NRC inspector has been advised of this request and will be provided opportunity to review and observe our VWAC training. This request has been reviewed under the cognizance of our Plant Review Committee and determined to not involve an unreviewed safety question per 10CFR50.59.
We would appreciate expeditious review and approval of this request to support ongoing work.
~~
General Manager CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades Attachment
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ATTACHMENT Consumers Power Company Palisades Plant Docket 50-255 REQUEST FOR APPROVAL OF USE OF VISUAL WELD ACCEPTANCE CRITERIA November 5, 1990
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Attachment Sht. 1 of 3 Where weld defects were in excess of specified standards, the inspector verified that the affected areas were removed, rewelded and reinspected until the specified standards were met.
5.10.4.2 Field Welding All field welding, whether produced by Bechtel employees or employees of subcontractors, was under the surveillance of Bechtel field welding inspec-tors.
The inspectors were qualified to judge all the types of welds used on the job as well as being experienced in the fundamentals, techniques and application of the nondestructive inspection methods used; eg, visual, mag-netic particle, liquid penetrant and radiography.
All welding was performed in accordance with approved procedures that were qualified in accordance with the governing codes and standards, viz ASME Section IX and AWS Dl.1.
In case of welds produced by Bechtel Construction personnel, etc, these procedures were prepared and qualified by the Bechtel Metallurgical and Quality Control Services Department and were identified in the applicable Bechtel design and fabrication drawings and specifica-tions.
Welders were qualified by tests as required by the applicable Bechtel Welder Performance Specifications.
These Bechtel specifications encompass the requirements of the governing codes and standards.
No welder was permitted to perform production welding until he had passed the neces-sary tests under the direction of the field welding engineer and had the test record on file at the jobsite.
Welding performed by subcontractors was in accordance with applicable job specifications, codes and standards.
When required by specifications, weld procedure~ were approved by Bechtel metallurgical engineers.
When required by applicable codes and standards, the subcontractor quali-fied his weld procedure before beginning production work.
Where welders employed by the subcontractors were required to make welds which required qualification, they were tested and qualified under the supervision of the subcontractor.
The Bechtel welding inspector verified that welding was performed in accordance with the proper procedures and that the procedures
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and welder qualifications had been properly executed.
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5.10.4.3 Inspection of Piping All piping systems and components were designed, fabricated, tested and inspected to the requirements of all applicable portions of the following standards and codes as minimum requirements:
- 1.
ASME Boiler and Pressure Vessel Code, Sections I, II, III and IX
- 2.
ASA Code for Pressure Piping (ASA B31.l and ASA B16.S) including appli-cable Nuclear Code Cases
- 3.
ASTM Standards FS0686-0369J-TM13 5.10-11 Rev 0
- 13.
~ /J-f, Letter from AD DeAgazio (NRC) to KW Berry (CP Co), "Safety Evalua-tion, Palisades Plant Response to IE Bulletin 80-11, 'Masonry Wall Design'," December 27, 1989.
- 6)
FS0686-0369J-TM13-TM11 5.10-15 Rev 10 Attachment Sht. 2 of 3
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l*I Attachment Sht. 3 of 3 Proposed Additions to FSAR Section 5.10.4.2 and Section 5
References INSERT A Add to Section 5.10.4.2 Field Welding For the 1990/1991 steam generator replacement activities, visual inspection and acceptance of structural welds was perf armed in accordance with NCIG-01 (Reference 14).
This welding inspection criteria is applicable for uncoated structural weldments made per AWS 01.1, and is not applicable to inservice inspections that are required by Section XI of the ASME Code.
INSERT B Add to Section 5
References:
- 14.
NCIG-01, "Visual Weld Acceptance Criteria for Structural Welding at Nuclear Power Plants," Revision 2, May 7, 1985.