HNP, we have spoke with River Technologies on this including using the pre-filter shielding box. The technology seems ok but I have been to plants that use de-ionizers to trap the material which becomes a huge dose source. We always require vendors to have vacuum box attachments at the pinch wheel locations where the vacuum hose takes away the material immediately to a remote vacuum therefore not creating another source of dose on platform.
Michael Seabock Lead Radiation Control Specialist - ALARA Harris Nuclear Plant T- 919.362.2808 P- 919.982.5466 [email protected] From: [email protected] [mailto:[email protected]] On Behalf Of Ayers Ronald J Sent: Tuesday, June 07, 2011 9:04 AM To: [email protected] Subject: Powernet: S/G Inline Filter Just wanted to know if anybody has used the new pre-filter inline trap when performing Eddy Current activities. The trap is placed in line with the probe vacuum cleaners, and is from River Technologies. If so what did you or do you think about it? Is there dose problems associated with changing out the filter? What about added dose for disposal? Did or do you have problems with loading and flow creating frequent filter changes? Thanks Ron Ayers Wolf Creek
