ML19221A520
| ML19221A520 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/16/1979 |
| From: | Stello V Office of Nuclear Reactor Regulation |
| To: | Arnold R GENERAL PUBLIC UTILITIES CORP. |
| References | |
| NUDOCS 7905230125 | |
| Download: ML19221A520 (2) | |
Text
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9 gs April 16, 1979 MEMORANDUM FOR:
Robert C. Arnold GPU Operations Manager FROM:
V.
Stello, Director Division o' Ooerating Reactors
SUBJECT:
ACCEPTABILI TY OF THE DESIGN CRITERI A FOR MODI-FI CATIONS TO THE THREE MI LE ISLAND UNIT 2 ELECTRI CAL POWER SYSTEMS A member of the NRC Technical Review Grotp met with GPU and Burns and Roe on April 15, 1979 at 13 00 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for the purpose of discussing the above subj ect.
Two maj or modi ficat icns were planned for the agenda.
These were the addition of two new diesel generators and the use of a 13.8 kv construction power line for circulating water pump back-uo power.
The NRC added a third item concerning the existing diesel generators.
The following summarizes the NRC comments at the conclusion of the referenced meeting:
1.
We find the design criteria for the incorporation of the two new diesel generators to be acceptable.
2.
We find the design criteria for ti.e use of the 13.8 kv con-structior. power source as a back-up for the circulating water pumps to be acceptable.
3 We expressed our concern with the existing onsite diesel generator systems and asked that the followia be given high priority consideration:
a) de fea t of the auto-start feature of the diesels besed upon an ESF signal and; b) defeat of the automatic loading of oli safety loads such that ali loading on the safety busses be done manually.
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Robert C. Arnold Final design and any additional substantive changes to the design criteria should be trar.smitted to us for comments.
{}i V.
Stello ctor Division of Operating Reactors Office of Nuclear Reactor Regulation cc:
W.
Cobean R. Wilson K.
Brockwell J.
Stair R. Mattson NRR Review Group (8) 163 355
.