ML20002A199

Expresses Appreciation for Cooperation & Assistance Provided by RG Wallace in Establishing TLD Program

ML20002A199
Person / Time
Site:	Sequoyah
Issue date:	10/23/1980
From:	Stohr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	Parris H TENNESSEE VALLEY AUTHORITY
References
NUDOCS 8011050148
Download: ML20002A199 (2)

Text

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/pem#o UNITED STATES g

d NUCLEAR REGULATORY COMMISSION o

,E REGION 11 g

g 101 MARIETTA ST,, N.W., suliE 3100 D

o ATLANTA, GEORGIA 303o3 OCT 2 31980 In Reply Refer To:

IITJP 50-327 jW Tennessee Valley Authority ATTN:

H. G. Parris Manager of Power 500A Chestnut Street Tower II Chattanooga, TN 37401

Dear Mr. Parris:

We appreciate the cooperation and assistance provided by R. G. Wallace of the Radiological Hygiene Branch, Muscle Shoals in establishing the NRC Direct Radiation Monitoring Net.ork (TLD program) in the environs of the Sequovah Nuclear Plant. This program will provide independent measurements of radiation levels in the vicinity of the plant site and will aid in assuring the validity of measurements made by TVA. Descriptions of the 41 TLD stations whch were placed around the site during the week of February 18, 1980, are contained in the enclosures.

(Enclosures included only with the copies of this letter sent to J. M. Ballentine, R. G. Wallace and the NRC Resident Inspector.) The enclosures, including descriptions of the locations of the TLD stations, were not sent to other addresses lacking a "need to know" in crder to minimize the probability of tampering and/or vandalism.

It is requested that holders of these enclosures limit their distribution for the same reason. is a listing of TLD station locations by direction and distance from the plant. Also included, is the NRC designation and siting criteria satisfied by the placement of each station. In general, the siting criteria provide for an Inner _ Ring (I) and an Outer Ring (0) of TLD stations at one to two and three to five miles from the site, respectively. One Inner Ring and one Outer Ring station is in each of the 16 Sectors where practical. Provision is also made for locations of High Public Interest (HPI), Population Centers of 25,000 or more (P), Populated Areas of less than 25,000 (PA), sites co-located with TVA (C) and the Nearest Resident (NR).

Upwind Controls are ordinarily situated approximately 15 to 20 miles from the site in the least frequent wind direction. is a proposed' route for exchanging the TLDs and consists of detailed descriptions and diagrams meant to allow persons unfamiliar with the Sequoyah vicinity to locate the TLD stations in a step by step manner.

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8011050 MS

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o. wow Tennesse7 Valley Authority.

I hope you find this information.useful. Please direct any questions regarding the NRC TLD program to J. R. ' Allen of my staff at 404/221-5599 Sincer y,

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t J. Philip Stohr, Chief 4

0 - Fuel Facility and Materials 1

Safety Branch L

Enclosures:

1.

Listing of TLD Stations 2.

Proposed Route for Exchanging TLDs i

cc w/encls. 1&2:

J. M. Ballentine, Plant Superintendent R. G. Wallace, Health Physicist i

cc w/out encl:

G. G. Stack, Project Manager J. F. Cox,' Supervisor, Nuclear Licensing Section M. J. Burzynski, Project Engineer H. N. Culver, Chief, Nuclear Safety Review Staff i

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