ML19345A471
| ML19345A471 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/05/1977 |
| From: | Vandenburgh D YANKEE ATOMIC ELECTRIC CO. |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19345A472 | List: |
| References | |
| WYR-77-61, NUDOCS 8011210692 | |
| Download: ML19345A471 (2) | |
Text
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T:I: phone 617 366-90ll 700-390 0739 WYR 77-61 YANKEE ATOMIC ELECTRIC COMPANY 20 Turnpike Road Westborough, Massachusetts 01581 xss
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July 5, 1977 3eigats Ed!bSil k9,/
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Reference:
(1) License No. DPR-3 (Docket No. 50-29) g 8
Subject:
Mechanical Shock Suppressors
Dear Sir:
Pursuant to Section 50.59 of the Commission's Rules and Regulations.
Yankee Atomic Electric Company hereby proposes the following modification to Appendix A of the Operating License (Reference (1)).
t PROPOSED CHANGE: Reference is made to the Operating License No. DPR-3 issued to Yankee Atomic Electric Company for the Yankee Rowe plant. We propose to amend the license as follows:
Modify Specification 3.7.9.1 and 4.7.9.1 (attached) of Appendix A of the Operating License to reflect a change-over from hydraulic shock supp;essors (snubbers) to mechanical shock suppressors (snubbers).
REASON FOR CHANGE: The purpose of this change is to incorporate into the Technical Specifications revised surveillance requirements which have been made necessary due to an upcoming changeover from hydraulic type snubbers to the more reliable mechanical type snubbers. Due to design, mechanical snubbers are not subject to the possible degradation of materials and repeatability as are the hydraulic snubbers. It is for this reason that surveillance requirements are limited to visual inspections.
l SAFETY CONSIDERATIONS: The changeover from hydraulic to mechanical snubbers represents what Yankee believes to be an increase in snubber reliability.
This change does not in any way endanger the health and l
saftey of the public. This proposed change has been reviewed by the l
Nuclear Safety Audit and Review Committee.
SCHEDULE OF CHANGE: The installation of the mechanical snubbers is scheduled for the June 1977 refueling outage. Yankee Rowe Technical Specifications will be changed peior to startup pending Commission approval.
_,m 80112106ff
s xs, United States Nuclect R gulatory Commission July 5, 1977 Attn: Offica of Nuclear R*setor Reg 21ation Page Two We trust that you will find this information satisfactory. However, should you desire additional information, please contact us.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY a
D. E. Vandenburgh Senior Vice President COMMONWEALTH OF MASSACHUSETTS)
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COUNTY OF WORCESTER
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Then personally appeared before me, D. E. Vandenburgh, who being duly sworn, did state that he is Senior Vice President of Yankee Atomic Electric Company and that he is duly authorized to execute and file the foregoing request in the name, and on the behalf of Yankee Atomic Electric Company, and that the statements therein are true to the best of his knowledge and belief.
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N Armand R. Soucy
' ' Notary Public My Commission Expires September 9, 1977 t
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