ML20032B340
| ML20032B340 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 10/26/1981 |
| From: | Randaza J Maine Yankee |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| EMY-81-159, NUDOCS 8111050448 | |
| Download: ML20032B340 (3) | |
Text
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October 26, 1981 (2y0 mg FMY-81-159 Proposed Change #70 Supplement 2
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thited States Nuclear Regulatory Commission
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Washington, D. C.
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g Attention:
Office of Nucles:: Reactor Regulation I
Division of Licensing
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Mr. Robert A. Clark, Chief Operating Reactors, Branch No. 3
References:
(a) License No. DPR-36 (Docket No. 50-309)
U (b) MYAPCo. letter to USNRC, dated October 5, 1981, FMY 81-151 (c) MYAPCo. letter to USNRC, dated July 28, 1981, FMY 81-112 (d) MYAPCo. letter to USNRC, dated September 29, 1980, WMY 80-136, Proposed Change 70, Supplement No. 1 (e) Licensee's Status Report dated September 29, 1981 (f) MYAPCo. letter to USNRC, dated October 18, 1979, WMY 79-119 (g) USNRC letter to MYAPCo., dated October 5, 1979 (h) MYAPCo. letter to USNRC, dated September 18, 1979, WMY 79-97 Proposed Change 70
Subject:
Maine Yankee Spent Fuel Storage Modification
Dear Sir:
Pursuant to Section 50.59 of the Commission's regulations, Maine Yankee Atomic Power Company proposes to change the amount of spent fuel to be stored in its on-site spent fuel pool and to some extent the manner in which it is to be stored.
Proposed Chance Maine Yankee seeks approval for the following spent fuel storage measures:
a)
Replacement of the existing spent fuel racks with new spent fuel racks in which the storage location center to center spacing is 10.25 inches.
Reracking will increase the number of spent fuel permanent storage locations from the 953 now existing to 1476.
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U. sit $;clearRegulatoryCommission October 26, 1981 Attention: Mr. Robert A. Clark, Chief Page 2 b)
Storage of spent fuel in the new racks described in (a) above in the form of consolidated fuel assemblies.
This concept is also referred to as pin storage.
Application of this concept at Maine Yankee will allow either up to the equivalent of 2038* spent fuel assemblies to be stored in consolidated form while at the same time reserve 217 permanent storage
,y spaces for full core reserve, or up to the equivalent of 2390* spent fuel assemblies in consolidated form by completely filling all 1476 locations with stored pins.
2 c)
Temporary storage of up to 121 spent fuel assemblies in their as discharged fom in an emergency rack located in the spent fuel cask laydown area. The temporary storage option reduces the number of peranent rack locations which should prudently be held in reserve for renoval of the entire core for inspection of the vessel or other short term operations.
- A detailed description of these proposed measures is found in Reference (b).
In Attachment A of supplement 1 to Proposed Change 70, (Ref. (c)) a proposed
-change to the Maine Yankee Technical Specification 1.1 Fuel Storage was submitted. That proposed change to specification 1.1 remains applicable and is needed to permit implementation of the spent fuel storage measures described above. No other changes to the existing Technical Specifications are reouired.
Reason for Chance As matters now stand, (see Ref. (b)), Maine Yankee will lose full core reserve capability in 1984 and will be unable to discharge a full reload batch of fuel in 1987. This change will permit the projected spent fuel discharges to be accomodated and maintain full core reserve beyond those dates.
. Description of Chance A description of the proposed spent fuel storage modifications is provided in Reference (b).
Safety Considerations The spent fuel storage measures described above are being submitted in connection with Maine Yankee because the Maine Yankee spent fuel racks previously reviewed were designed to achieve a multiplication factor of 0.90 or less. This is more restrictive than currently accepted practice of limiting the multiplication factor to 0.95 or less, a practice Maine Yankee proposes to adopt.
- See par. 6.1.11 of Reference (b) for further discussion.
7 MAINE VARKEE ATOMIC POWER COMPARY U. S. Nuclear Regulatory Commission October 26, 1981 Attention:
Mr. Robert A. Clark, Chief Page 3 Based on the considerations set forth in Ref. (b), there is ample assurance that all aspects of the proposed spent fuel storage measures can be conducted safely and that the public health and safety will not be endangered.
This supp!= ment has been reviewed by the Nuclear Safety Audit Review Committee and the Plant Operating Review Committee.
Fee Determination This proposed change was originally submitted, Reference (h), as a Class III Amendment with a payment of $4,000 because it was deemed to involve a single safe'y issue but not a significant hazard consideration.
Subsequently, pursuant to NRC letter, Reference (g), it was upgraded to a Class IV Amendment because the staff considered this a complex issue.
In Reference (f) Maine Yankee submitted the remaining $8,300 licensing fee, bringing the total amount submitted for this proposed change to $12,300. No additional payment is necessary.
Schedule of Chanae The proposed reracking and spent fuel consolidation will be implemented on a phased basis to provide an increasing capacity consistent with the normal refueling cycle.
Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY
. John B. Randazza Vice President JHG/plb STATE OF MAINE
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b/Ndo lA))SS COUNTY OF KENNECEC)
Then personally appeared before me, John B. Randazza, who, being duly sworn, did state that he is a Vice President of Maine Yankee Atorric Power Company, that he is duly authorized to execute and file the foregoing reouest in the name and on the behalf of Maine Yankee Atomic Power Company, and that the statements therein are true to the Last of his knowledge and belief.
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Notary PL^lic DONNA A. lewis, Notary Pubhc Hy Comnussion Experes October 10, 1937
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