ML19305E360
| ML19305E360 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 04/17/1980 |
| From: | Andognini G BOSTON EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-02, IEB-80-2, NUDOCS 8004230477 | |
| Download: ML19305E360 (2) | |
Text
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F CDsTON EDISON COMPANY Osmsmak Ormese 500 Devketoes 5tesav Bostoes. MaseAcMusette 03199
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seuctsAs ese owe espaetescast April 17,1980 BEco. Ltr. #80-72 i
Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region I U.S. Nuclear. Regulatory Commission 631 Park Avent;e King of Prussia, PA.
19406 i
License No. DPR-35 Docket No. 50-293 Response to IE Bulletin No. 80-02
Dear Sir:
The following information is provided in response to IE Bulletin #80-02 Inadequate Quality Assurance ~for Nuclear-Supplied Equipment.
Question 1.a Have reactor feedwater spargers and thermal sleeves manufactured and/or fabricated by the Marvin Engineering Company been purchased and/or installed in your facility?
Since Marvin Engineering is principally a subcontracting Company, determine if your equipment originated with the Marvin Company and was eventually supplied to your facility through another contractor / supplier.
Response 1.a Yes.
Replacement feedwater spargers and thermal sleeves were purchased through GE-San Jose, fabricated by Marvin Engineering, and installed during the month of February 1980 under CE supervision. Prior feedwater spargers and thermal sleeves were not supplied or fabricated by Marvin Engineering.
Question 1.b Provide a description of this equipment to include its purchase date and its design function during both normal and accident conditions.
Response 1.b lOOl The basic functional design requirements for the feedwater sparger are described S
in Section l'.4 of General Electric Company NEDE-21821-02, dated August 1979.
/.
i The feedwater sparger and thermal sleeve assembly, located within the reactor,
//U is defined as an intierna3 structure and meets the requirements of sub-subsection a _n n d 2 9_ n_
,C C D3N E!CCN COMPANY Mr. Boyce H. Grier, Director April 17,1980 Page 2 NG-1122(c) of tha ASMECode,Section III, as having avoided creating an adverse effect on the integrity of the core support structure.
The non-code feedwater sparger and thermal sleeve assembly has been classified by GE as non-essential to the safety of the plant according to the definitica of Criteria I of the NRC General Design Criteria,10 CFR 50, Appendix A.
This equipment was procured per CE Specification 22A5517, Rev. 5, and Drawings 795E267, Rev. O, and 112D1654, Rev. 4.
The purchase date for the feedvater spargers was 6/26/79, and the purchase date for the thermal sleeves was 8/22/77.
l Question 2 For each piece of identified equipment, provide the performance history associated with its usage. This should include the cause of any failures or malfunctions and the frequency of such events.
Response 2
]
i the installation of feedvater spargers and thermal sleeves fabricated by Marvin Engineering was completed in Febraury 1980. Pilgrim 1 is currently in a refueling outage. No usage data associated with these feedwater spargers and thermal sleeves has been generated to-date.
Question 3 Provide information on the suppliers and receiver's QA/QC program in effect at the time of purchase. This information should be discussed in terms of it providing sufficient bases for judging that the integrity of the equipment is sufficient to permit plant operation during normal and accident conditions.
Response 3 Ihe feedwater spargers and the thermal sleeves were supplied under the GE QA Program, NEDO 11209-03A and NEDO 11209-04A. Marvin Engineering QA Manual #7, Rev. O, was in effect during fabrication. Inspection activities were performed by Edison in accordance with the Boston Edison Quality Assurance Manual, Volume II.
GE and Edison inspection activities verified conformance with procurement specification and drawing requirements and provided objective evidence of product integrity.
On January 30 and 31, 1980 after receipt of NRC I&E Bulletin No. 80-02, Edison promptly conducted a detailed source inspection and evaluation of product quality at the Marvin Engineering Company in Inglewood, California. No conditions adverse to quality were observed.
Very truly yours,
- fay:
Attachments cc: Director, Div. of Operating Reactors
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