1. We would like to know if at your site if you survey your safety harnesses after every use? Safety harnesses used in the RCA are monitored in a SAM-11 when returned to the Tool Crib after use. Harnesses used inside containment during outages are surveyed weekly. We perform an open window ion chamber scan of approximately 20 safety harnesses from random areas of containment. If net open window reading is greater than or equal to 0.5 mR/hr, then perform detailed surveys for loose surface contamination on affected harness and remove harness from service.
2. Is it different if used in clean versus contaminated areas? We currently do not mark our safety harnesses for "clean" or "contaminated use". Safety harnesses used in containment are not normally released for use outside of containment. 3. If you don't survey the harnesses after every use, what frequency or reason would require a survey? Safety harnesses used in the RCA are monitored in a SAM-11 when returned to the Tool Crib. In addition, we perform a contamination survey of the RCA Tool Crib on a weekly basis. 4. What instruments do you use to survey your safety harnesses? SAM-11. RM-14, and RO-2 (or equivalent). 5. For the safety harnesses used in contaminated areas, how often do you smear the harnesses? 6. Are your contaminated safety harnesses staged in contaminated areas for use in outages? Non-outages? During outages, safety harnesses for containment are staged inside our containment building. Non-outages - RCA use safety harness are checked out from the RCA Tool Crib. Barbara J. Thompson Supervisor of Exposure Control Dominion - North Anna Power Station Email: [email protected]<mailto:[email protected]> Phone: 540-894-2605 Beeper: #3469 FAX: 540-894-2408 From: [email protected] [mailto:[email protected]] On Behalf Of Rolph, James Thomas Jr Sent: Monday, September 10, 2012 2:16 PM To: [email protected] Subject: Powernet: Safety harness survey practice inquiry At Sequoyah we have safety harnesses of two different colors available for use in our RCA, one for contaminated areas and the other for use in the clean areas. We survey the safety harness after every use by taking a smear and monitoring in our article monitors, followed by frisking if we receive an alarm. The alarm set points we use for contaminated area safety harnesses is 10K dpm, and clean area is 1K dpm. 1. We would like to know if at your site if you survey your safety harnesses after every use? 2. Is it different if used in clean versus contaminated areas? 3. If you don't survey the harnesses after every use, what frequency or reason would require a survey? 4. What instruments do you use to survey your safety harnesses? 5. For the safety harnesses used in contaminated areas, how often do you smear the harnesses? 6. Are your contaminated safety harnesses staged in contaminated areas for use in outages? Non-outages? Thank you in advance for taking the time to read my questions and for providing answers. Jim Rolph RP Technical Support Superintendent (423) 843-8115 - Work (423) 593-0247 - Cell CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.
