ML20003J269
| ML20003J269 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 04/29/1981 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Groce R Maine Yankee |
| References | |
| NUDOCS 8105110138 | |
| Download: ML20003J269 (4) | |
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APR 2 01981 I A Docket No.
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Mr. Robert H. Groce
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Senior Engineer-Licensing O/
Maine Yankee Atomic Power Con ny g,O Q
1671 Worcester Road Framingham, Massachusetts 01701
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Dear Mr. Groce:
We continue to review your submittals of September 18, 1979 and Septerter 29, 1980, concerning modified spent fuel pin storage at the Madne Yankee Atomic Power Station.
We find that we will need additional information before we can complete our review and evaluation. The enclosure lists the information required.
Please submit the information requested with your response to our letter dated March 17, 1981.
Sincerely, Criginal signea e, Robert A. Clarx '
Robert A. Clark, Chief Operating Reactors Branch f3
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Enclosure:
As stated cc: See next page DJSTM-3BUON:
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Docket No. 50-309 Mr. Robert H. Groce Senior Engineer-Licensing Maine Yankee Atomic Power Company 1671 Worcester Road Framingham, Massachusetts 01701
Dear Mr. Groce:
We continue to review your submittals of September 18, 1979 and September.29, 1980, concerning modified spent fuel pin storage at the Maine Yankee Atomic Power Station.
We find that we will need additional information before we can ecmplete our rc.'iew and evaluation. The enclosure lists the infor:Dation required.
Please submit the infomation requested with your response to our letter dated March 17, 1981.
Sincerely, k
Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing
Enclosure:
As stated cc: See next page
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Maine Yankee Atomic Power Company cc:
E. W. Thurlow, President Mrs. L. Patricia Doyle, President Maine Yankee Atomic Power Company SAFE POWER FOR MAINE Edison Drive Post Office Box 774 Augusta, Maine 04336 Camden, Maine 04843 Mr. Donald E. Vandenburgh First Selectman of Wiscasset Vice President - Engineering Municipal Building Yankee Atomic Electric Company U. S. Route 1 20 Turnpike Road Wiscasset, Maine 04578 Westboro, Massachusetts 01581 Stanley R. Tupper, Esq.
John A. Ritsher, Esquire Tupper and Bradley Ropes & Gray 102 Townsend Avenue 225 Franklin Street Boothbay Harbor, Maine 04538 Boston, Massachusetts 02110 David Santee Miller, Esq.
Mr. Rufus E. Brown 213 Morgan Street, N. W.
Deputy Attorney General Washington, D. C.
20001 State of Maine Augusta, Maine 04330 Mr. Paul Swetland Resident Inspector / Maine Yankee Mr. Nicholas Barth c/o U.S.N.R.C.
Executive Director P. O. Box E Sheepscot Valley Conservation Wiscasset, Maine 04578 Association, Inc.
P. O. Box 125 Mr. Charles B. Brinkman Alan, Maine 04535 Manager - Washington Nuclear Operations Wiscassett Public Library Association C-E Power Systems High Street Combustion Engineering, Inc.
Wiscasset, Maine 04578 4853 Cordell Avenue, Suite A-1 Bethesda, Maryland 20014 Mr. Torbet H,. Macdonald, Jr.
Office of Energy Resources Director, Criteria and Standards Division State House Station #53 Office of Radiation Programs ( ANR-460)
Augusta, Maine 04333 U.S'. Environmental Protection Agency Washington, D. C.
20460 Robert M. La::c, Esq., Chairman Atomic Safety and Licensing Board U.S. Environmental Protection Agency U.S. Huclear Regulatory Commission Region I Office Uashington, D. C.
20555 ATTN:
EIS COORDINATOR JFX. Federal Building Dr. Cadet H. Hand, Jr., Director Boston, Massachusetts 02203 Bodega Marine Laboratory University of California Bodega Bay, California 94923 Mr. Gustave A. Linenberger Atonic Safety and Licensing Board State Planning Officer
'J.S. '!uclear 72;ubst:r/ C: mission Executive Oe::arrent
"= eingt:n, O. C.
20555 189 State Street
.su;.sti, "aine N33; P00R ORIGINAL
ADDITIONAL INFORMATION REQUIRED FOR MAINE YANKEE SPENT FUEL POOL REVIEW 1.
The text (page 3 of Attachment B of the September,1980 submittal) asserts that all mechanical unce'rtainties were treated by assuming
" worst case" conditions.
But Figure 3.1 indicates that th~e effective multiplication factor is approximately 0.929 at the 10.5 inch.ncminal spacing. This seems incons~istent. Please, provide a listing of mechanical parameters with the nominal and " worst case" value of each.
2.
The conclusion (page 3 of Attachment B of the September,1980 submittal) that compacted assemblies are less reactive than the design lattice was basedoncalculatiopsata12.0inchpitch. Providh arguments (or calculational results) to show that this conclusion-is also' valid at 10.5 inch pitch. Also explain the fact that optimally moderated compact assemblies have a smaller effective multiplication factor than the de-sign assembly _(0.760-vs-0.773 in the Septerter.,1979 submittal).
3.
The implication in the Septerter,1980 submittal is that the. reracking will take place in stages so that some portiens of the racks will have 10.5-inch spacing while others have 12.0-inch spacing. Ccement on the criticality i= pact of interfaces between two.such portiens.
4.
Describe the samples and instrument readings and the frequent / of measurement that will be performed to monitor the water purity and need for spent fuel pit cleanup system demineralizer resin and filter replacement. State the chemical and radiochemical limits to be used in monitoring the spent fuel pool water and initiating corrective action. Provide the basis for establishing these limits. Your resconse w
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'should consider variables such as:. boron, gross gama' and io' dine activity,
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