ML19276E734
| ML19276E734 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 02/14/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 7903200522 | |
| Download: ML19276E734 (4) | |
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UNITED STATES y4
'g NUCLEAR REGULATORY COMMISSION 5 _-.
j WASHINGTON, D. C. 20555
- . *, h February 14, 1979 Docket No. 50-344 Mr. Charles'Goodwin, Jr.
Assistant Vice President Portland General Electric Company 121 SW Salmon Street Portland, Oregon 97204
Dear Mr. Goodwin,
In conducting our review of your letter of September 29, 1978 relating to the installation of isolation switches at local control st_ations for safe-shutdown equipment at the Trojan Nuclear Plant, we have determined that we will need your response to the staff positions and the request for additional information identified in the enclosure to complete the review.
Please contact us if you have any questions concerning this request.
Sincerely /
lLn
/
A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors
Enclosures:
1 Staff Positions 2.
Request for Additional Information cc w/
Enclosures:
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See next page 7903200532
Portland General Electric Company February 14, 1979 cc:
Mr. H. H. Phillips Portland General Electric Company 121 SW Salmon Street Portland, Oregon 97204 Warren Hastings, Esquire Counsel for Portland General Electric Company 121 SW Salmon Street Portland, Oregon 97204 Mr. J. L. Frewing, Manager Generation Licensing and Analysis Portland General Electric Company 121 SW Salmon Street Portland, Oregon 97204 Columbia County Courthouse Law Library, Circuit Court Room St. Helens, Oregon 97501 Director, Oregon Department of Energy Labor & Industries Building, Rm. 111 Salem, Oregon 97310 Richard M. Sandvik, Esquire Counsel for Oregon Energy Facility Siting Counsel and Oregon Department of Energy 500 Pacific Building 520 SW Yamhill Portland, Oregon 97204 Michael Malmrose U. S. Nuclear Regulatory,Comission Trojan Nuclear Plant P. O. Box 0 Rainier, Oregon 97048
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.n STAFF POSITIONS TROJAN FIRE PROTECTION DOCKET NO. 50-344 1.
Modifications to engineered safety, features systems should not degrade these systems.
That i,s,' the modificat' ion should be designed to meet the same design criteria and standards of the system prior to modification.
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Switches to transfer control from the control room to the control station outside the control room should be keylock with keys under supervisory control, or should have other means to limit access.
3.
About 90 days prior to the completion of all modifications, you will be required to submit appropriate Technical Specifications governing added equipment.
In this regard, Technical Specifications should be proposed to periodically verify capability to transfer control and operate equipment locally.
The procedure should also test the " decouple" alarms.
4.
(a) Spare fuses should be located in each panel or cabinet containing a control circuit fuse for equipment used to perform remote shutdown; (b) The draft ONI for a fire in the cable spreading room should include instructions that if equipment fails to function from the local control point after transferring to local control, the control circuit fuse (s) should be checked.
5.
The draft ONI (item 2.3) states that the control room operator can verify that equipment has been decoupled from the control room by verifying that the status light has extinguished.
However, the fire may also result in the status light beirig extinguished.
Therefore, the procedure should also require the operator to verify, via communication with the operator (s) at the local panel, that control has been transferred.
6.
The draft ONI should reference use of the procedure for per-foming remote shutdown in carrying out those functions which must be performed locally.
7.
The remote shutdown capability should include, independent of cable spreading rcom and control room equipment, sufficient instrumentation to perform safe shutdown.
As a minimum, this should includ_e pressurizer level and pressure and steam generator level.
Describe how this instrumentation will be provided and its location.
REQUESTS FOR ADDITIONAL INFORMATION TROJAN FIRE PROTECTION DOCKET NO. 50-344 1.
Identify the number of operators required to perform shutdown under the most severe situation (i.e., all operations performed locally).
2.
Identify the operations covered by ONI-1.
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