ML19309E457
| ML19309E457 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 03/18/1980 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| IEB-80-06, IEB-80-6, TAC-08291, TAC-8291, NUDOCS 8004220087 | |
| Download: ML19309E457 (4) | |
Text
YN gf,p* r:,,IS UNITED STATES o
g W"e fg7 i NUCLEAR REGULATORY COMMISSION "r., \\. %f/,
E W ASHINGTON, D. C. 20555
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'S March 18,1980 o
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Docket f;o. 50-344 i
Mr. Charles Goodwin, Jr.
Assistant Vice President Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon 97204 i
Dear Mr. Goodwin:
In conducting our review of your letter of January 3,1979 relating to the containment purge generic issue as related to Trojan Nuclear Plant, we have determined that we will need the additional information identified in the enclosure to continue our review.
In order for us to maintain our review schedule, your response is requested within 45 days of your receipt of this letter.
Please contact us if you have any questions concerning this request.
Sincerely /
/
/
/Hiddd v
'A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Request for Additional Information cc: w/ enclosure See next page 8004220037
~
Mr. Charles Goodwin, Jr.
?ortland General Electric Company March 18,1980 cc:
Mr. J. W. Durham, Esquire Robert M. Hunt, Chairman Vice President and Corporate Counsel Board of County Commissioners Portland General Electric Company Columbia County 121 S.W. Salmon Street St. Helens, Oregon 97501 Portland, Oregon 97204 Warren Hastings, Esquire Counsel for Portland General Electric Company 121 S.W. Salmon Street Portland, Oregon 97204 Mr. Jack W. Lentsch, Manager Generation Licensing and Analysis Portland General Electric Company 121 S.W. Salmo'n Street Pcrtland, Oregon 97204 Columbia County Courthouse Law Library, Circuit Court Room l
St. Helens, Oregon 97501 l
Director, Oregon Department of Energy Labor and Industries Building, Room 111 Salem, Oregon 97310 Richard M. Sandvik, Esquire Counsel for Oregon Energy Facility Siting Counsel and Oregon Department of Energy 500 Pacific Building
~
520 S.W. Yaahill Portland, Oregon 97204 Michael Malmros, Resident Inspector U. S. Nuclear Regulatory Commission Trojan Nuclear Plant P. O. Box 0 Rainier, Oregon 97048 Mr. Donald W. Godard, Supervisor Siting and Regulation Oregon Department of Energy Labor and Industries Building, Room 111 Salem, Oregon 97310
REQUEST FOR ADDITIONAL INFORMATION FOR BYPASS AND RESET OF ENGINEERED SAFETY FEATURES FOR TROJAN DOCKET NO. 50- 344 1.
The information presented in your FSAR and your letter of January 3, 1979, is not sufficient to determine if the following requirements are met for the safety signals to all Engineered Safety Features (ESF) equipment. Therefore, identify and justify all exceptions i
to the following:
l Criterion 1 - In keeping with the requirements of General Design Criteria 55 and 56, the overridinga of one type of safety actuation signal (e.g., radiation) should not cause the blocking of any other type of safety actuation signal (e.g., pressure) for those valves that have no function besides containment isolation.
Criterion 2 - Sufficient physical features (e.g., key lock switches) are to be provided to facilitate adequate administrative controls.
Criterion 3 - A system level annunciation of the overridden status should be provided for every safety system impacted when any override is active.
(See R.G.1.47).
Criterion 4 - Diverse signals should be provided to initiate isolation of the containment ventilation system.
Specifically, containment high radiation, safety injection actuation, and containment high pressure (where containment high pressure is not a portion of safety injection actuation) should automatically initiate CVI.
Criterion 5 - The instrumentation and control systems provided to initiate the ESF should be designed and qualified as safety grade equipment, 1
Criterion 6 - The overriding or resettingb of the ESF actuation signal should not cause any valve or damper to change position.
2.
In addition to responding to ths general queation above, please provide the following specific infomation:
The following definitions are given for clarity of use in this evaluation:
a - Override: the signal is still present, and it is blocked in order to perform a function contrary to the signal.
b - Reset: the signal has come and gone, and the circuit is being cleared in order to return it to the normal condition.
(1) Provide an "as built" tabulation of all Engineered Safety Features (ESF)/ Auxiliary Supporting Features (ASF) valves and dampers required to be operated automatically following an accident.
This tabulation should include the following:
a.
Component designation b.
System served c.
Safety function (e.g., containment isolation, spray initiation) d.
Actuation signal sources e.
Reference to control circuitry (see 2.(3) below) f.
Indication whether or not the component safety function indicated in 2.(1) above can be defeated through the use of a manual override or bypass in either the control system or actuation signal system circuitry.
(2) For each manual bypass or override feature identified in 2(1) above, provide a description of the physical feature (s) provided to prevent inadvertant operation and to satisfy the requirements of IEEE Std. 279-1971 Section 4.14.
(3) For each actuation signal system and component actuation system identified in 2(1)d and 2(1)e above, incorporating a manual reset, override or bypass feature, provide a complete circuit description, including detailed pictorial infonnation (i.e., as built circuit diagram, schematics, logics), sufficient to allow a thorough understanding of the operation of such circuitry including the function and effect of all control devices (e.g., relays, contacts, switches, diodes,etc.).
(4) For ea:h actuation signal identified in 2(1) above, identify the design standards, quality assurance requirements, and component qualification standards involved to ensure that the sr
- ems will perform their designated safety function upon demand.
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