ML19330A320
| ML19330A320 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 06/12/1980 |
| From: | Vandenburgh D YANKEE ATOMIC ELECTRIC CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-06, IEB-80-6, WYR-80-65, NUDOCS 8007170116 | |
| Download: ML19330A320 (3) | |
Text
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5 TM Telephone 617 366-9011 wx flO-390-0739 YANKEE ATOMIC ELECTRIC COMPANY B.4.1.1 WYR 80-65 20 Turnpoke Road Westborough, Massachusetts 01581
- YAmus,.s June 12,1980 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region I
- i31 Park Avenue King of Prussia, Pennsylvania 19406 Attention:
Mr. Boyce H. Grier, Director
References:
(a) License No. DPR-3 (Docket No. 50-29)
(b) YAEC Letter to USNRC dated November 19, 1979, WYR 79-141 (c) YAEC Letter to USNRC dated December 31, 1979, WYR 79-163 (d) YAEC Letter to USNRC dated January 21, 1980, WYR 80-9 (e) USNRC Letter to YAEC dated March 13, 1980 (f) YAEC Letter to USNRC dated April 9,1980, WYR 80-43
Subject:
Response to I & E Bulletin No. 80-06, " Engineered Safety Feature (ESP) Reset Controls"
Dear Sir:
Reference (e) forwarded the subject bulletin which required a written response within 90 days.
Yankee's response is contained in the enclosure to this letter.
We trust that this information will be saticfactory; however should you have any questions, please contact us.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY N
D. E. Vandenburgh G
Senior Vice President COMMONWEALTH OF MASSACHUSETTS)
)ss COUNTY OF WORCESTER
)
Then personally appeared before me, D. E. '<andenburgh, who, being duly sworn, did state that he is Sr. Vice Preside.at of Yankee Atomic Electric Company, that he is duly authorized to execute and file the foregoing request in the name and on the behalf of Yankea Atomic Electric Company, and that the statements therein are true to the best of his knowledge and belief.
W A. R. Soucy Notary Public 80 0 717 0 l/(p My commission Expires September 7, 1984 g
4 ENCLOSURE Response to I & E Bulletin No. 80-06 Question 1.
Review the drawings for all systems serving safety-related functions at the schematic level to determine whether or not upon the reset of an ESF actuation signal, all associated safety-related equipment remains in its emergency mode.
Answcr This review has been completed and the result is documented in our response to Question 3 Quest' ion 2.
Verify the actual installed instrumentation and controls at the facility are consistent with the schematics reviewed in Item 1 above by conducting a test to demonstrata that all equipment remains in its emergency mode upon removal of the actuating signal and/or canual resetting of the various isolating or actuation sigrals. Provide a schedule for the performance of the testing in your response to this Bulletin.
Answer As documented in our responses to Item 2.1.4 of NUREG-0578
" Containment Isolation", References (a-e), changes were made to preclude automatic loss of containment isolation as a result of resetting containment isolation signals.
This change was verified by test during the January 1980 outage, therefore no additional tests will be scheduled on the containment isolation system.
Testing of the remaining system, the safety injection actuation system, will be accomplished before the plant returns to power.
Question 3 If any safety-related equipment does not remain in its emergency mode upon reset of an ESF signal at your facility, described proposed system modification, design change, or other corrective action planned to resolve the problem.
Answer SEE TABLE 1 for a list of equipment which responds as discussed in Question 3 above.
Circuit modifications will be made to preclude automatic reset of this equipment from its emergency mode as a result of resetting an ESF signal. These changes will be implemented before the plant returns to power.
J
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TABLE I Safety Reference to Component Actuation Control Circuitry Description System Service Signal 9699-P-15-1 Charging Pump SIAS Trips FE-4B P-15-2 Charging Pumps SIAS Trips FE-4B P-15-3 Charging Pumps SIAS Trips FE-4B SOV-46 Accumulator N2 Pilot SIAS "A" ESK-6AB Supply Valve Energizes to Vent SOV-47 Accumulator N2 Pilot SIAS "B" ESK-6AB Supply Valve Energizes to Vent i
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