ML18043A610
| ML18043A610 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 03/15/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| TASK-15-19, TASK-RR NUDOCS 7904130084 | |
| Download: ML18043A610 (5) | |
Text
. /
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MAR 15 1979 Docket No. 50-255
- Mr. David Bixel Nuclear licensing Administrator*
Consumers Power.Company 212 l~est Miichiga'n /\\Venue Jackson~*Michigan 49201
Dear Mr. *Bixel:
~RI~HTI~
- ~et{so-255}.
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BGrimes' RVollmer OELD OI&E(3)
DLZiemann RSilver HSmith DEtse*nhut TERA JRBuchanan
- . ACRS(l 6)
DDavis
. Enc rosed is a copy of our draft evaluation of *systematic Evaluation Program Topic-XV-19.
You-are requested to.examine the facts upon which the
- staff has based its evaluation and respond either by confirming that the facts are*correct, or by identifying any errors. If in error,~please supply correct~d information for the docket.
He e'ncourage you to supply
- for the docket any other mated al related to thi-s topic that might affect the staff's evaluation *.
. Your response whhin 30 days of the date you receive this letter is requested. If no response is received within that time, we will
- assume that you have no comments or corrections.
Enclosure:
. Topic XV-19, cc i.f/encl osure:
See next page Sincerely, t>l"ig'.hial -Sl~ed* by.:
De'rni."' T,,.
z-i.e"*nP-n.n Dennis L. Ziemann, Chief
.Operating Reactors-Branch#?
Divisibn of Operating*Reactors 1
- 'i
Mr. David Bixel cc M. I. Miller, Esquire Isham, Lincoln & Beale Suite 4200 One First National Plaza Chicago, Illinois 60670 Mr. Paul A. Perry, Secretary Consumers Power Company.
212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Myron M. Cherry, Esquire Suite 4501 One IBM Plaza Chica~o, Illinois 60611 Kalamazoo Public Library 315 South Rose Street Kalamazoo, Michigan 49006 K M C Inc.
ATTN:
Mr. Jack McEwen 1747 Pennsylvania Avenue, N. W.
Suite 1050 Washington, D. C.
20006
- March 15, 1979
I Palis.ades Topic XV-19 Loss-of-Coolant Accidents Resulting from Spectrum of Postulated Piping Breaks Within the Reactor Coolant Pressure Boundary - Radiological Consequences The safety objective of this review is to assure that the releases from this postulated event will not result in exposures in excess of the established guidelines.
An analysis of the radiological consequences of a postulated loss-of-coolant accident (LOCA) was performed in support of Amendment No. 31 to the Provisional Operating License issued on November 1977.
This analysis was performed following the assumptions and procedures indicated in the S.R.P. 15.6.5 (Revision O) and Regulatory Guide 1.4.
The estimated doses resulting from these postulated accidents have been modified to take into account the updated dispersion coefficients established in Topic II-2.C, "Atmospheric Dispersion", and are listed in Table*xv-3. These doses are within the 10 CFR Part 100 guidelines as specified in the acceptance criteria for the S.R.P.
15.6.5 (Revision 0).
In addition, the total body doses listed in Table XV-3 include the contribution of both beta and ga!lllla radiation, while current procedures consider only the effects of gamma radiation.
As a result, the total body doses may be estimated to be about a factor of 2 lower.
On the basis of these results, we conclude that the radiological consequences resulting from this postulated accident at the Palisades plant are similar to those of plants licensed under current criteria.
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e
.. {. ** t Table XV-3 ESTIMATED OFFSITE DOSES FOR POSTULATED LOSS OF COOLANT ACCIDENT Containment ECCS Leakage Leakage
-Contribution Contribution Total (rem}
(rem}
(rem}
0 - 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> Exclusion Thyroid 110...
60 *..
170 *. -
Area Boundary Total* Body*
2.0
.15 2.2 Doses o - 30 day Low Thyroid
- 58.
- 52.
110.
Population Zone Doses Total Body*
.34
.047
.4
- Include beta and gamma radiation
- References
- 1. Palisades Plant - FSAR. Section 14.17, Docket 50-255
- 2. Safety Evaluation by the Office of Nuclear Reactor Regulation Supporting Amendment No. 31 to Provisional Operating License No. DPR-20. Palisades Plant, November 1, 1977.
- 3. Letter from David P. Hoffman, Consumers Power Company, to Dennis Ziemann, March 9, 1978.
- 4. Safety Evaluation by the Office of Nuclear Reactor Regulation Supporting Amendment No. 40 to License No. DPR-20, Palisades Plant, April 12, 1978.
\\
- 5.
Lett:er from D. L. Ziemann t9 D. Bixel, Consumers Power Company, January 9, 1979 (enclosure includes draft assessment of Topic II-2.C)
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