ML20004C767
| ML20004C767 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 06/01/1981 |
| From: | Garrity J Maine Yankee |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| FMY-81-85, GL-81-10, JHG-81-145, NUDOCS 8106050203 | |
| Download: ML20004C767 (7) | |
Text
.
2.C.2.1 JHG 81-145 MAME' UARHEE Aleml0P0l'/ERCOMPARU*
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June 1, 1981 FMY 81-85 United States tOclear Regulatory Commission C ((
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p JUN,0 41981>Q-Washington, D. C.
20555 Attention: Division of Licensing u,s, g e m e n s m sa ]
Office of Nuclear Reactor Regulation 5"""
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Mr. Robert A. Clark, Chief k
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Operating Reactors, Branch #3 to
Reference:
(a) License No. DPR-36 (Docket No. 50-309)
(b) NRC Generic Letter 81-10 dated February 18, 1981 (c) MYAPC Letter FMY 81-52 to USNRC dated April 1, 1961 (d) Maine Yankee Atomic Power Station Facility Emergency Plan December 31, 1980
Subject:
Conceptual Design for Emergency Operations Facility (EOF)
Dear Sir:
Consistent with our previous commitment (Reference (c)) to submit a conceptual EOF design by June 1, 1901, the conceptual design for the Maine Yankee EOF is presented in Enclosure A.
As stated in Reference (c), we will have the EOF described in Enclosure A operable by October 1982 except that the operability date will slip if the NRC's preimplementation review of the EOF conceptual design is simultaneously unfavorable and untimely.
We trust this information is satisfactory; however, if you have any questions or desire additional information, please contact us.
Very truly yours, MAINE YAta(EE ATOMIC POWER COMPANY 1
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%Nd John H. Garrity, Dir ctor Nuclear Engineering and Licensing JHG/plb 819605020.9 p
June 1, 1981 Enclosure A Conceptual Design for the Emergency Operations Facility (EOF) for Maine Yankee Atomic Power Company Wiscasset, Maine Physical Description The primary EOF for Maine Yankee consists of the Information Building, a single story steel frame masonry sided, metal roofed building and a planned single-story addition.
A floor plan of the primary EOF, including the proposed high habitability area addition, is shown in the attached Figure 1.
Location The EOF is located just outside of the plant security protected area.
(See Figure 2). Under normal operating conditions, the area designated as the EOF is utilized for training and is covered by routine plant security checks.
The EOF location is optimum for immediate activation and functional management of overall licensee emergency response and coordination with Federal, State, and local agencies in accordance with the Maine Yankee Facility Emergency Plan (Reference (d)).
Existing Structure The existing information center is a well-engineered structure that conforms to the Uniform Building Code and was orginally designed to withstand 100-year recurring winds and floods.
The building contains toilet facilities, offices, projection facilities, and an assembly area capable of accomodating at least 20 news media. Separate office space for 5 mC personnel has been allocated. Working space in this portion of the EOF is approximately 2100 2
ft,
l The existing structure will continue to be used as the primary emergency operations facility as described in the facility emergency plan, until the addition described below is available.
Planned Addition A single story 2440 ft2 structure is planned to be added to the existing Information Center that will be designed to meet the habitability requirements specified in Reference (b) item III A.l.2, Upgrade Emergency Support Facilities. This structure will consist of 8 inch solid concrete block walls and an 8-inch concrete slab roof, designed to achieve a protection factor of S.
l The approximate location of this proposed addition is shown in Fig.1.
The ventilation system will be equipped with HEPA filtration which can be placed in operation when the EOF is activated. The system will operate in a manner similar to the control room ventilation system, with the ability to j
regulate the amount of outside and recirculated air supplied.
1 I
Jun2 1, 1981 Backup EOF The backup EOF will be the Maine Yankee Atomic Power Company corporate offices in Augusta, Maine, approximately 25 air miles from the plant.
(See Figure 3). When activated, continuity of dose prediction and decision making functions will be maintal..ed with the necessary portable equipment.
The corporate office contains an assembly area for twiefing more than 20
, news media personnel.
The backup EOF is a short five minute drive from the State Emergency Operations Center which will enhance emer;;0ncy response capabilities when the i
backup EOF is activated.
(See Figure 4).
The backup EOF will be activated when the primary EOF becomes or is expected to become uninhabitable.
Radiological Monitoring Upon activation of the primary EOF portable radiation monitoring equipment from the plant will be dedicated and used to continuously verify EOF habitability. A single channel analyzer will be available to analyze air samples to determining the concentration of any radiciodines present in the EOF atmosphere.
Co.monications Communications between the EOF and other emergency response facilities (ERF) has been detailed in Reference (d). Adequate, reliable, primary backup means of communications presently exist to allow the necessary emergency response and assesment functions to be performed as detailed in the site emergency plan (Reference d).
Additional coventional telephone lines may be added in conjunction with impr)vements to the plant telephone system now being implemented.
Data Systeg and Instrumentation Maine Yankee has recently completed a detailed evaluation of three proposals of systems designed to provide real-time computer support. for the plant as the final phase of upgrading the plant computer system. A vendor has been selected to supply two independent computer systems (operations support and technical support), each fully reoundant.
The operations support system will consist of real-time data acquisition / monitoring, all system software for log / alarm function, and support all control room functions.
The technical support system will provide the communications to, and back-up for, the operations support system and redundant, general purpose, computing facilities for multi-user terminals.
It is anticipated that the computer system upgrade will be completed in 1983.
It is expected that the data set necessary to assess environmental conditions, plant status, coordinate radiological monitoring activities and carry out eny protective action recommendations will be available for display in appropriase locations including the emergency operations facility. _
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