ML20247F005
| ML20247F005 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 07/21/1989 |
| From: | Cockfield D PORTLAND GENERAL ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RTR-NUREG-1344 GL-89-08, GL-89-8, NUDOCS 8907270064 | |
| Download: ML20247F005 (2) | |
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David W. C'ockfield Vice President, Nuclear F
July 21;-.1989
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' Trojan Nuclear Plant-LL'
. Docket 50-344 License NPF-1 i.
U.S. Nuclear R'egulatory Commission D
ATTN: Document Control Desk
. Washington DC 20555
Dear Sirs:
7
~ Response to Generic Letter 89-08, Erosion / Corrosion-Induced Pipe Wall Thinning Nuclear Regulatory Commission (NRC) Ceneric Letter 89-08 requested.
licensees to provide assurances that a program has been implemented which consists of systematic measures to ensure that erosion / corrosion (E/C) does not lead to degradation of single-phase and two-phase high-energy carbon
. steel systems.
By letter dated September 18, 1987 (corrected November 4, 1987), Portland
' General Electric Company (PCE) responded to NRC Bulletin 87-01, " Thinning of Pipe Walls in Nuclear Power Plants", giving a detailed history of the evolvement of the long-term E/C Monitoring Program at the Trojan Plant. As committed to in our response,;the program has been further improved, and it is equivalent to the Nuclear Utility Management and Resource Council
'(NUMARC), Program described in NUREG-1344, " Erosion / Corrosion-Induced Pipe
. Wall Thinning' in U.S. Nuclear Power Plants".
' Inspections for E/C-induced pipe wall thinning have been performed annually E
at!the Trojan Plant since 1982. The long-term E/C Monitoring Program that
'has been developed is implemented under an approved Plant procedure, and is
. documented.in a computer data base that facilitates data trending. The program recognizes the susceptibility of piping carrying single-phase or two-phase fluid to E/C and ensures that the structural integrity of all high-energy secondary system piping and components is maintained.
890 270064 890721 PDR ADOCK 05000344 At91 p
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121 SW Salmon Street. Portland. Oregon 97204 j
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Portlarict M MGisaisiif 9.
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Document Control Desk July 21, 1989 i
Page 2 We would be pleased to discuss any questions you have concerning this response.
Sincerely, c:
Mr. John B. Martin Regiona1' Administrator, Region V
-U.S. Nuclear Regulatory Commission Mr. David Stewart-Smith State of Oregon l
Department of Energy Mr. R. C. Barr NRC Resident Inspector i
Trojan Nucicar Plant Subscribed and sworn to before me this 21st day of July 1989, dr. Y f&
7 Notary Public of 0regon My Commission Expires:
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