ML19254E397
| ML19254E397 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 10/05/1979 |
| From: | Moody D Maine Yankee |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| WMY-79-111, NUDOCS 7911010040 | |
| Download: ML19254E397 (2) | |
Text
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O B.4.2.1 k'MY 79-111 N
October 5, 1979 United States Nuclear Regulatory Cocmission Office of Inspectica and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention:
Mr. Boyce H. Grier, Director Ruference:
(a) License No. DPR-36 (Docket No. 50-309)
(b) USNRC IE Circular 76-06 dated November 24, 1976 (c) MYAPC letter to USNRC dated December 22, 1976 (d) USNRC letter to MYAPC dated July 26, 1979 ISE Bulletin 79-17 (e) MYAPC letter to USNRC dated August 22, 1979 (kMY 79-82)
Dear Sir:
Subject:
Response to I&E Bulletin 79-17 The following information is being submitted in response to USNRC I&E Bulletin 79-17.
The responses are numbered corresponding to the Bulletin paragraph numbers.
- 2. (a) A visual inspection, based on Article Ik'A-5000 of Section XI of the ASME Code, was conducted of the stagnant borated, oxygenated systems at Maine Yankee.
These systems included High Pressure Safety Injection, Low Pressure Safety Injection, Containment Spray, and Residual Heat Removal systems. All stagnant portions of these systems, including those in-accessible and those accessible during reactor operation were examined. Because one of the containment spraf pumps is out of service, a small portion of the piping associated with it was not inspected at operating pressure.
All other piping was at normal pressure.
No evidence of leakage was found.
' (b) A total of 117 welds were inspected by ultrasonic examination.
Of these, 33 were also examined using liquid penetrant techniques. These welds represent 10% of the total number of welds in the four systems listed in 2.(a) by system by pipe size. No indications were found.
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79110100 %
United States Nuclear Regulatory Commission October 5, 1979 Attention:
Mr. Boyce H. Grier, Director Page Two If you have any questions, please contact Paul Willoughby at Maine Yankee Atomic Power Company, Wiscasset, Maine (207) 442-8766 extension 182.
Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY o
. Mcod
- P Manager of Operations DEM/smw 1282 E