ML20138R061

Informs of Change in Practice Concerning Radiation Measurements for Determining Status of High Radiation Areas. New Practice Involves Control of Only Areas Where Individual Whole Body Dose Likely to Exceed 100 Mrem/H

ML20138R061
Person / Time
Site:	Oyster Creek, 05000000, Crane
Issue date:	10/14/1985
From:	Heward R GENERAL PUBLIC UTILITIES CORP.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
85-301, NUDOCS 8511180410
Download: ML20138R061 (2)

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GPU Nuclear g

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100 Interpace Parkway Parsippany, New Jersey 07054 201 263-6500 TELEX 1316-482 Writer's Direct Dial Number:

October 14, 1985 85-301 Dr. T. E. Murley Region I Regional Administrator U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Subject:

Oyster Creek Nuclear Generating Station, Operating Licensing No. DPR-16, Docket No. 50-219 Three Mile Island - Nuclear Station Unit 1, Oper'ating License No. DPR-50, Docket No. 50-289 Three Mile Island - Nuclear Station Unit 2, Docket No. 50-320 Surveys for High Radiation Area Status This letter is to inform you of a practice adopted by GPU Nuclear at Oyster f

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Creek, Three Mile Island Unit 1, and Three Mile Island Unit 2 Nuclear Stations, concerning radiation measurements for determining the status of high radiation Our past practice was to categorize high radiation areas on the basis areas.

of contact radiation measurements. Our new practice will be to control only those areas in which it is determined an individual's whole body dose is likely to exceed 100 millirem in one hour.

The following criteria will be used to determine high radiation area status:

1.

If the radiation measurement at one foot (approximately 30 centimeters) from any source of radiation, considering source size, geometry and intensity, will permit an individual to exceed the requirements of 10 CFR 20.202(b)(3), the area shall be controlled as a high radiation area or locked high radiation area in accordance with the applicable site Technical Specifications.

2.

Those areas not posted in accordance with Paragraph (1) above will be posted with " hot spot" markers if there are radiation measurements greater than 100 mR/hr at contact with any radiation source.

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GPU Nuclear is a part of the General Public Utilities System o

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I Dr. T. E. Murley 'Octobef 14','1985' 3.-

Those normally inaccessible areas, such as overheads, which may have radiation measurements resulting in the need for control as high radiation areas, will be posted with cautionary signs at appropriate access points. These signs will require notification of the Radiological Control Department prior to working in such areas.

If these areas become accessible due to maintenance or modification work, then they will be managed in accordance with Paragraph (1).

This new GPU Nuclear practice is consistent with the existing NRC regulations, and is also consistent with the proposed revision to 10 CFR Part 20.

It will not result in our employees receiving additional dose. It will, however, allow us to reclassify several areas and remove costly administrative controls on areas not warranting such attention. There will be no sacrifice of radiological safety.

The implementation of the above practice by written procedure is currently underway. If there are any regulatory concerns with our implementation of this practice, please contact Mr. J. R. Thorpe, Director of Licensing and Regulatory Affairs,-at (201) 299-2272 immediately.

Very truly yours, Q

R. W. Heward, Jr.

Vice President and Director

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Radiological and Environmental Controls RWH/brh/mjh 0502U/001 cc:

Mr. J. A. Zwolinski, Chief Mr. W. Bateman Operating Reactors Branch No. 5 NRC Resident Inspector Division of Licensing O. C. Nuclear Generating Station U. S. Nuclear Regulatory Commission Forked River, N. J.

98731 Washington, D. C.

20555 Mr. J. F. Stolz, Chief Mr. R. Conte Operating Reactors Branch No. 4 NRC Resident Inspector Division of Licensing TMI-1 Nuclear Station U. S. Nuclear Regulatory Commission P. O. Box 480 Washington, D. C.

20555 Middletown, PA 17057 i

Dr. B. J. Snyder, Director Dr. William Travers TMI Program Office Deputy Director, TMI-2 Program Office

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U. S. Nuclear Regulatory Commission TMI-2 Nuclear Generating Station Washington, D. C.

20505 Middletown, PA 17057 I

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