Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: results for CY 1993 and CY 1994

Abstract

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 .

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 1999

“…1.04, "kea Monitoring TLD Program" issued in PNL- MA-266, PNL Radiolo~"cal Control Implementing Procedures. Program results for CY 1993/1994, CY 1995, CY 1996, CY 1997, and CY 1998 are found in Bivins and Stoetzel (1996a), Bivins and Stoetzel (1996b), Bivins and Stoetzel (1997), Bivins and Stoetzel (1998), and Bivins and Stoetzel (1999), respectively. Data horn the program was also used to support the PNNL As Low As Reasonably Achievable (ALARA) prggram.…”

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2006

“…The program is now implemented according to RCP-5.1.04, "Area Monitoring TLD Program," issued in PNL-MA-266, PNL Radiological Control Implementing Procedures. Program results for previous years are found in Bivins and Stoetzel (1996a, 1996b, 1997, 1998, 1999, 2000, 2001, 2002, 2005, and 2006). Data from the program was also used to support the PNNL as Low as Reasonably Achievable (ALARA) program.…”

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2001

“…The program is now implemented according to RCP-5.1.04, "Area Monitoring TLD Program," issued in PNL-MA-266, PNL Radiological Control Implementing Procedures. Program results for previous years are found in Bivins and Stoetzel (1996a, 1996b, 1997, 1998, 2000, and 2001. Data from the program was also used to support the PNNL As Low As Reasonably Achievable (ALARA) program.…”