ML100320145
| ML100320145 | |
| Person / Time | |
|---|---|
| Site: | Indian Point, Zion  |
| Issue date: | 07/02/1980 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Peoples D Commonwealth Edison Co |
| References | |
| NUDOCS 8007170241 | |
| Download: ML100320145 (9) | |
Text
JUL 2 Docket Nos:L-e -247 50-286 50-295 50- 304 Mr. D. L. Peoples Director-of Nuclear Licensing Commonwealth Edison Company P. 0. Box,767 Chicago, Illinois 60690
Dear Mr. Peoples:
SUBJECT:
REQUEST FOR ADDITIONAL ZION UNITS 1 AND 2)
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SVarga TSpeis EReeves LOl shan JMeyer AMar'chese PCheck DEi-senhut DRoss INFORMATION (INDIAN POINT UNITS 2 AND 3, As we indicated to you at the Technology Meeting No. 5 on June 17, 1980, we find that additional information related to the ba ckfitting of severe accident mitigation f
,eatures into the Zion/Indian Point plants as described in the enclosure to this letter is needed.
This information should be provided for-the four nuclear units in question. If the information is the same for any of the four'units, please so indicate. For each of the questions, plehase provide us with a written discussion and/or evaluation.
We request your complete response within 30 days of your receipt of this letter;,however, if some items can be comple'ted sooner, we Would appreciate that such information be provided to us on An expedited basis.
Sincerely, Encl osure:
Request for Additional, Information cc:
See next page
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Commonwea h Edison Company P. 0. Box 76.
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Dear Mr. Peoples.
SUBJECT:
REQUEST 'FR ADDITIONAL INFORMATION (INDIAN POINT UNITS 2 AND 3, ZION UNITS) \\AND 2)
As we indicatedto you at the Technology Meeting No. 5 on June 17, 1980, we find that additional inf rmation related/to the backfitting of severe accident mitigation features into the Ziqn /Indian Point plants as described in the enclosure to this letter, is needed.
This information should be provided for the four nuclear uniits in"'question. If the information is the same for any of the four unit~s, please so indicate.
For each of the questions, please provide us wih a written discussion and/or evaluation.
~
We request your complete response w.lthin\\30 days of your receipt of this letter; however, if some/items can be completed sooner, we would appreciate that such informa.tion be provided to-us on an expedited basis..
7 Sincerely, Steven-A. \\Varga, hief
/Operating Reactors\\Branch 1
/Division of Licensi. g
Enclosure:
Request for Additional Informa tion cc:
see next page
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- pkREGQ, 5028 5029 50-286 Mr. D. L. Peoples Director of Nuclear Commonwealth Edison P. 0. Box 767 Chicago, Illinois 6
Dear Mr. Peoples:
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 JU L 2 18 Licensing Company
.0690
SUBJECT:
REQUEST FOR ADDITIONAL ZION UNITS 1 AND 2)
INFORMATION (INDIAN POINT UNITS 2 AND 3, As we indicated to you at the Technology Meeting No. 5 on June 17, 1980, we find that additional information related to the backfitting of severe accident mitigation features into the Zion/Indian Point plants as described in the enclosure to this letter is needed.
This information should be provided for the four nuclear units in question. If the information is the same for any of the four units, please so indicate.
For each of the questions, please provide us with a written discussion and/or evaluation.
We request your complete response within 30 days of your receipt of this letter; however, if some items can be completed sooner, we would appreciate that such information be provided to us on an expedited basis.
Sincerely, Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing
Enclosure:
Request for Additional Information cc:
See next page
REQUEST FOR ADDITIONAL INFORMATION
- 1. Provide us with Drawing No. 9521-F-2503 as shown on Indian Point Unit 2, Drawing No. 9321-F-2508.
- 2. Provide us with the coupling details (listed as "AG", "AH", "AE",
and "AF", on drawing for Zion) for instrument tubes.
- 3. Can the portion of the instrument tubes between the aforementioned couplings be removed?
- 4. How are the radiation levels in the reactor cavity affected when either the instrument tubes or thimbles are removed, and also f the entire core is removed?
- 5. Can the instrument tubes be supported from the top or sidewalls of the reactor cavity instead of the floor?
- 6. Can the radius of curvature of the instrument tubes be decreased from 12 feet to approximately 4 feet to allow more space between the bottom of the instrument tubes and the floor of the reactor cavity?
- 7. What are the maintenance requirements for the instrument tubes?
- 8. Can temporary shielding be installed in the reactor cavity to allow workers to remain there for longer periods of time without exceeding occupational dose limits.
If it is not feasible to install temporary shielding, how long can people work in this environment?
- 9. Do the instrument tubes require air cooling on the exterior surface.
- 10.
Do the instrument tubes require any space to accormmodate thermal expansion.
- 11.
Provide us with drawings that show the plan view and exact dimensions of the reactor cavity floor, and how the space varies laterally between the bottom of the instrument tubes and the floor of the reactor cavity.
- 12.
How thick is the reactor cavity floor concrete on top of the steel liner?
Can this concrete be removed? What are the structural consequences of removing this concrete?
- 13.
Provide us with drawings that show the number and location of containment sumps.
- 14.
Discuss ways of bringing coolant pipes into the region of the reactor cavity floor.
-2
- 15.
Discuss the access provisions to the lower reactor cavity, including drawings that show dimensions of such access.
- 16.
What additional weight, fluid pressure and impact loads can the reactor cavity floor sustain during core melt accident conditions
Mr. L. Peoples-2 cc:
White Plains Public Library 100 Mar-tine Avenue White Plains, New York 10601 Joseph D. Block, Esquire Executive Vice President Admi ni strat ive Consolidated Edison Company of New York, Inc.
4 Irving Place New York, New York 10003 Richard Remshaw Nuclear Licensing Engineer Consolidated Edison Company of New York, Inc.
4 Irving Place New York, New York 10003 Ms. Ellyn Weiss dWes Sheldon, Harmon and es 1725 I Street, N.W., Suite 506 Washington, D. C. 20006 Dr. Lawrence R. Quarles Apratment 51 Kendal at Longwood Kennett Square, Pennsylvania 19348 Theodore A. Rebelowski Resident Inspector U. S. Nuclear Regulatory Commrission P. 0. Box 38
- Buchanan, New York 10511 John D. O'Toole Assistant Vice President Consolidated Edison Company of New York, Inc.
4 Irving Place New York, New York 10003 Carl R. D'Alvia, Esquire Attorney for the Village of Buchanan, New York 395 Sout%-h Riverside Avenue Croton-on-Hudson, New York 10520 Mr. L. Peoples--
cc:
Jeffrey C. Cohen, Esquire New York State Energy Office Swan Street Building CORE 1 - Second Floor Empire State Plaza Albany, New York 12223 Director, Technical Development P rograms State of New York Energy Office Agency Building 2 Empire State Plaza Albany, New York 12223 Director, Technical Assessment Division Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460 U. S. Environmental Protection Agency Region II Office ATTN:
EIS COORDINATOR 26 Federal Plaza New York, New York 10007 Joyce P. Davis, Esquire Law Department Consolidated Edison-Corr~any of New York, Inc.
4 Irving Place New York, New York 10003 Mr. J. P. Bayne, Resident Manager Indian Point 3 Nuclear Power Plant P. 0. Box 215 Buchanan, New York 10511 Mr. J. W. Blake, Ph.D., Director Environmental Programs Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. L. Peoples-4 cc:
Mr. George M. Wilverding Licensing Supervisor Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. P. W. Lyon, Senior Vice President - Nuclear Generation Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. Charles M. Pratt Assistant General Counsel Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Robert J. Vollen, Esquire 109 North Dearborn Street Chicago, Illinois 60602 Dr. Cecil Lue-Hing Director of Research and Development Metropolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Zion-Benton Public Library District 2600 Enmmaus Avenue Zion, Illinois 60099 Mr. Phillip P. Steptoe Isham, Lincoln and Beale Counselors at Law One First National Plaza 42nd Floor Chicago, Illinois 60603 Susan N. Sekuler, Esquire Assistant Attorney General Environmental Control Division 188 West Randolph Street, Suite 2315 Chicago, Illinois 60601 Mr. L. Peoples
- 4 cc:
Mr. W. Bruce Dunbar Mayor of Zion Zion, Illinois 60099 Department of Public Health ATTN:
Chief, Division of Nuclear Safety 535 West Jefferson Springfield, Illinois 62761 U. S. Nuclear Regulatory Commrission Resident Inspectors Office Post Office Box 288 Deerfield, Illinois 60015 U. S. Environmental Protection Agency Federal Activities Building Region V Office ATTN:
EIS COORDINATOR 230 South Dearborn Street Chicago, Illinois 60604