ML19275A413
| ML19275A413 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 09/12/1979 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7910040363 | |
| Download: ML19275A413 (3) | |
Text
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UNITED STATES
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SEP 121979 MEMORANDUM FOR:
A. Schwencer, Chief, Operating Reactors Branch #1, D0R FROM:
- d. Lainas, Chief, Plant Systems Branch, D0R
SUBJECT:
TROJAN NUCLEAR PLANT, REQUEST FOR ADDITIONAL INFORMATION FOR DEGRADED GRID VOLTAGE (TAC 10056)
Plant Name:
Trojan Nuclear Plant Docket No.:
50-344 Responsible Branch: ORB #1 Project Manager:
C. Trammell Reviewing Brancn: Plant Systems Branch Status: Awaiting Infonnation In response to technical assistance request TAC 10056, the Plant Systems Branch has reviewed the licensee's submittal of July 19, 1977 and found that additional information is required in order to complete our review.
The attached request for additional information should be forwarded to the licensee as soon as possible with a request for response within 45 days.
l al&
G. Lainas, Chief Plant Systems Branch Division of Operating Reactors
Contact:
S. Rhow, X28077 J. Ibarra, LLL
Enclosure:
As stated cc w/ enclosure:
See page 2 1095
. X
- *'.0 ona 36'3f
i
. SEP 1 ? 1979 cc w/ enclosure:
D. Eisenhut W. Gammil' B. Grimes C. Trammell G. Lainas D. Tondi P. Shemanski M. Chiramal S. Rhow J. Ibarra, LLL 1095
.23
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REQUEST FOR ADDITIONAL INFORMATION TROJAN NUCLEAR PLANT DEGRADED GRID V0LTAGE (TAC 10056)
Based on our review of your submittal dated July 19, 1977, we have concluded that your basis for not proposing a design modification to your plant electrical power distribution system undervoltage protection is not acceptable. Your basis being that compliance with our positions, submitted to you by our letter dated June 3,1977, placEsthe plant in a degraded condition and is contrary to Regulatory 1.93.
R. G. 1.93, Availability of Electric Power Sources, deals with operational restric-tions based on loss of power sources.
The R.G. does not address design requirements; it is GDC 17 that specifies design requirements.
Your basis is, therefore, not relevant.
In view of the above, we require that you provide your proposed design modification and changae in the Technical Specification based on the guidance contained in staff positions submitted to you by our letter dated June ?, 1977.
1095.::,