ML19329C629
| ML19329C629 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/21/1975 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| NUDOCS 8002180141 | |
| Download: ML19329C629 (1) | |
Text
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DISTRIBUTION:
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Docket File yi., 2 1 275 I
Docket No. 50-34t>
D O O
'D) o o El Chairman, Advisory Committee
- T f..
D) on Reactor Safeguards lg (Qj
_ k, M;t U.S. Atomic Energy Commission a
Washington, D.C.
20543
Subject:
3 7,ty grqa; myg Davis-3 ease Nucicar Power Station, " nit 1
.,ourteen c
h copies of the following Category A documents concerning the subject facility are transmitted for review by the Committee:
'0, dated July 15, 1975, submitted by the Tolecio Edisca
.bendment ;;o.
Compeny for the Davis-Besse Nuclear Pover Station, Unit 1.
The sendment consists of revised and additional pages to the FSAR.
J
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Directorate of Licensing
Enclosures:
As stated 4
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.2 Form AEC-MS Rev. 9-33) AECM 0240
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- Responsibility for writing and enforcing procedures to avoid unnecessary exposures has been delegated to the health physics The chairman of the Station Review Board approves these*
group.
procedures while the Company Nuclear Review Board audits them.
4 12.1 SHIELDING Radiation shielding at Davis Besse is designed to ensure that the criteria of 10 CFR 20 will be met during normal operations or anticipated operational occurrences and that design features to achieve ALAP exposures to operating personnel have been included in the plant design. All plant areas have been classified into radiation zones based on expected frequency and duration of occupancy.
Zones identify accessibility limits that range from unlimited access to normally inaccessible.
The design of the radiation shielding considers the dose rate criterion for each sone based on the radiation sources in each compartment within the zone. However since conservative estimates have been used in the source terms developed from failed fuel (i.e., 17.), dhe dose rate in the vicinity of tanks, filters, demineralizers, degasifiers, avaporators, coolers and other process equipment is expected to be lower than the zone designations indicate.
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