ML19305C456
| ML19305C456 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 03/12/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Groce R Maine Yankee |
| References | |
| NUDOCS 8003280614 | |
| Download: ML19305C456 (4) | |
Text
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E{7 fg UNITED STATES p,
NUCLEAR REGULATORY COMMISSION
~E WASHINGTON, D. C. 20555
%, ' A March 12, 1980 Docket No. 50-309 Mr. Robert H. Groce Senior Engineer-Licensing Maine Yankee Atomic Power Company 25 Research Drive Westboro, Massachusetts 01581
Dear Mr. Groce:
In order to complete our review of the electrical override / bypass aspects of your containment purge system, we need additional information. Your FSAR and letters of December 28, 1978 and December 10 and 12,1979, did not provide sufficient information.
Kindly provide the information requested in the enclosure to enable us to complete our review. Submit three signed originals and 37 additional copies within 30 days of receipt of this letter.
Sincerely,
..R6bert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors
Enclosure:
Request for Additional Information cc w/ enclosure: See next page l
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o Yankee Atomic Electric Company cc w/ enclosure (s):
!!rs. L. Patricia Doyle, President E. W. Thurlow, President SAFE POWER FOR MAINE Maine Yankee Atomic Power Company Post Office Box 774 Edison Drive Camden, flaine 04843 Augusta, Maine 04336 First Selectman of Wiscasset Mr. Donald E. Vandenburgh Municipal Building Vice President - Engineering U. S. Route 1 Yankee Atomic Electric Company Wiscasset, Maine 04578 20 Turnpike Road Westboro, Massachusetts 01581 Director, Technical Assessment Division John A. Ritsher, Esquire Office of Radiation Programs Ropes & Gray (AW-459) 225 Franklin Street U. S. Environmental Protection Agency Boston, Massachusetts 02110 Crystal Mall #2 Arlington, Virginia 20460 Mr. John M. R. Paterson As'sistant Attorney General U. S. Environmental Protection Agency State of Maine Region I Of fice Augusta, Maine 04330 ATTN:
EIS COORDINATOR l
JFK Federal Building Mr. Nicholas Barth Boston, liassachusetts 02203 Executive Director Sheepscot Valley Conservation Stanley R. Tupper, Esq.
Association, Inc.
Tupper and Bradley P. O. Box 125 102 Townsend Avenue Alan, Maine 04535 Boothbay Harbor, Maine 04538 W'scassett Public Library Association David Santee Miller, Esq.
High Street 213 Morgan Street, N. W.
Wiscasset, Maine 04578 Washington, D. C.
20001 Mr. Robert R. Radcliffe Of fice of Energy Resources 55 Capitol Street Augusta, Maine 04330 Robert M. Lazo, Esq., Chairman Atomic Safety and Licensing Board f
U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr. Cadet H. Hand, Jr., Director Bodega Marine Laboratory University of California Bodega Bay, California 94923 Mr. Gustave A. Linenberaer State Plannino Officer Atomic Safety and Licensing Board Executive Department U. S. Nuclear Regulatory Commission State of Maine Washington, D. C.
20555 189 State Street Augusta, Maine 04330
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION FOR BYPASS AND RESET OF i
ENGINEERED SAFETY FEATURES FOR MAINE YANKEE
@CKtl NO.60-309 j
1.
The information presented in your FSAR and your letters of December 28, 1978, December 10, and 12,1979, is not sufficient to detemine if
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the following requirements are met for the safety signals to all Engineered Safety Features (ESF) equipment. Therefore, identify and justify all exceptions to the following:
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.
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 the generalquestions 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 information (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 each actuation signal identified in 2(1) above, identify the design standards, quality assurance requirements, and component qtialification standards involved to ensure that the systems will perform their designated safety function upon demand.
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