Summary LIn January 1993, Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM)@OE 1994). The purpose of the program was to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. Article 51 l.la of the RCM requires issuance of personnel dosimeters if individuals are likely to receive a dose of at least 100 mrem annually.Area thermoluminescent dosimeters (TLDs) were placed in PNNL facilities in accordance with the following guidelines: in all 300 Area PNNL facilities where staff work at least eight hours per month in all PNNL facilities where staff conduct radiological work (Le., have a current Radiological Work Permit) in all PNNL facilities that are located within 15 m (-50 ft) of another facility (including those of other contractors) that contains a radiological area, or an outdoor radiological area.A total of 115 area TLDs were placed in PNNL facilities during CY 1993, and 118 area TLDs were placed during CY 1994. The TLDs were exchanged and analyzed quarterly with the exception of the second quarter TLDs for CY 1994, which were left in the field for six months through the end of the third quarter.The area monitoring TLD program was a useful tool in determining exposure trends in work areas located outside of radiological areas. In several situations, the information obtained from this program was used to relocate staff or radioactive material resulting in potential dose reductions for staff.AI1 routine area monitoring TLD results were less than 50 mrem annually after correcting for worker occupancy. The results support the conclusion that personnel dosimeters are not necessary for staff in these monitored areas.iii .

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In January 1993, Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 5 14 of the U.S. Department of Energy (DOE) Radiological Control Manual (RCM). The purpose of the program was to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 83 5.402 (a) (1)-(3) and Article 5 1 1.1 of the RCM, personnel dosimetry shall be provided to 1) radiological workers who are likely to receive at least 100 mrem annually, and 2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years (CY) 1993-1996 confirmed that personnel dosimetry was not needed for individuals located in areas monitored by the program.A total of 93 area thermoluminescent dosimeters (TLDs) were placed in PNNL facilities during CY 1997. The TLDs were exchanged and analyzed quarterly. All routine area monitoring TLD results were less than 50 mrem annually after correcting for worker occupancy. The results support the conclusion that personnel dosimeters are not necessary for s t a , declared pregnant workers, minors, or members of the public in these monitored areas....

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Occupational doses were estimated for radiation workers at the monitored retrievable storage (MRS) facility. This study provides an estimate of the occupational dose based on the current MRS facility design, examines the extent that various design parameters and assumptions affect the dose estimates, and identifies the areas and activities where exposures can be reduced most effectively.