At Grand Gulf we do not use such a device. We have procedural guidance to keep them in close proximity, defined as within a hand span, and then observe in the field.
Fred W. Rosser R. P. Supervisor Grand Gulf Nuclear Station 601 437-6571 ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Egert, Glenn W. Sent: Monday, September 13, 2010 5:35 PM To: [email protected] Cc: Shepherd, R Mark Subject: Powernet: TLD and ED worn in close proximity Columbia requests the following information. 1) Do you use a device such as a geometry card or bag to ensure the TLD and electronic dosimeter (ED) are worn in close proximity on the worker? 2) On what types of jobs do you require the use of this device, e.g., only contaminated areas where PCs (or lab coats) are worn, work involving dose gradients, every time an ED is worn, etc.? Thank you in advance. Glenn W. Egert Radiological Support, Dosimetry Columbia Generating Station Energy Northwest (509) 377-4418 [email protected]
