ML20042B368
| ML20042B368 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 03/19/1982 |
| From: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Randazza J Maine Yankee |
| References | |
| CAL-82-12, NUDOCS 8203250253 | |
| Download: ML20042B368 (2) | |
Text
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19 MAR 1982 Docket No. 50-309-I * /\\
CAL 82-12 a
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Maine Yankee Atomic Power Company.
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ATTN: Mr. J. P. Randazza p.
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83 Edison Drive
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Augusta, Maine 04336
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Gentlemen:
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Subject:
Confirmatory Action Letter 82-12 This refers to the telephone conversation between you and Mr. R. W. Starostecki of this office, on March 19, 1382, regarding the stud failures on No. 2 Steam Generator cold leg manway identified on March 10, 1982. During disassembly 6 of 20 studs failed and an additional 4 studs showed cracks during subsequent ultrasonic examinations. We understand that all remaining studs for the No. 2 Steam Generator. hot and cold leg manways have been examined by ultrasonic and magnetic particle testing techniques and no additional cracking was identified.
With regard to the matters discussed, we understand that you will take the following actions prior to reactor startup:
1.
Hardness test all studs removed from No. 2 steam generator cold leg manway to determine if there is a hardness-failure correlation.
2.
Remove the No. 1 and No. 3 steam generator primary manway covers checking retainer. plate, gasket fit and gasket compression.
3.
Prior to removal of steam generator manway covers measure cover flange clearance and note stud location in flange cover.
4.
Identify each No. 1 and No. 3 steam generator manway cover stud with an individual number visible when installed.
5.
Inspect all No. 1 and No. 3 steam generator primary manway studs using ultrasonic, magnetic particle and hardness testing.
6.
Remove residual lubricant from studs and stud holes prior to reassembly.
Apply only thread lubricant approved for use at normal operating temperature.
OFFICIAL RECORD COPY 8203250253 820319 PDR ADOCK 05000309 G
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Maine Yankee Atomic Power Company
- 2 19 MAR 1982 7.
Replace manways using studs of alternating hardness properties if hardness-failure correlation is evident.
8.
After manway installation is complete again check manway cover gap clearance to assure appropriate gasket seating.
If our understanding of your planned actions as described above is not-in accordance with the actual plans and actions being implemented, please contact this office immediately.
Sincerely, Original Signed By: R T L!\\K.tSop 9
I Ronald C. Haynes Regional Administrator cc:
E. Wood, Plant Manager E. W. Thurlow President R. H. Groce, Senior Engineer, Licensing J. A. Ritsher, Esquire Public Document Room (PDR) local Public Document Room (LPOR)
Nuclear Safety Information Center (NSIC)
State of Maine NRC Resident Inspector bec:
Region I Docket Room (with concurrences)
E. Jordan, IE R. Clark, ORB 3-NRR R. Carlson D. Eisenhut, DL-NRR g
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R rF. RA p RL A Gallo/ gwc Brdnner Ebneter Starostecki p lan 4 Hayes
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3/19/82
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