[Powernet] Ludlum 9DP and 9DP* Pressurized Ion Chamber

North Anna is evaluating the Ludlum 9DP pressurized ion chamber for use at the station. 1. Does your site use this instrument? 2. Could you share feedback on what it is used for and its performance? 3. If used at your site, could you share your operation and calibration procedu

Re: [Powernet] [External] Does anyone use epd pre-alarm alerts?

North Anna currently does not use the pre-alarm alerts for our DMC-2000s. We were also concerned for the "pre-alarms" being mistaken for an actual dose or dose rate alarm. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technic

[Powernet] Portable Radiation Instrument Performance Checks

For plants that perform weekly performance checks for their portable survey instruments: 1. Do you require a daily or prior to use source response check for instruments? 2. If you require a daily source response check, is this documented or part of the user's instrument checks? Thank you for

Re: [Powernet] Personal Air Samplers

North Anna flow calibrates annually. We currently performance check air samplers daily when used (operational and mechanical checks, cal sticker, etc.). No prior to or post flow calibrations are required. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superinten

[Powernet] Documenting relocating dosimetry

Due to limited response (several sites were in outages:)) - we are reporting this benchmark question: North Anna is benchmarking the industry on how other utilities document relocating a worker's chest dosimetry to another whole body location. 1. Does your site have a process for relocati

Re: [Powernet] How do you post ladders?

John, North Anna uses the following survey tags for temporary ladders and scaffold platforms: [cid:image003.jpg@01D42E51.67583650] For permanently installed ladders we use our normal radiological posting process (placard, rope, stanchions, etc.) for the ladder swing gate or post the area at t

Re: [Powernet] Elmer's Glue to fix contamination.

North Anna does not use Elmer's Glue as a decontamination method. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hpspower

Re: [Powernet] Delta Suit Benchmark

North Anna does not use the Delta Suit. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hpspowernet.org] On Behalf Of FOGLE

Re: [Powernet] Quick Benchmarking on ED's

North Anna recently had a DMC-3000 that went to a "blank screen" while worn by a worker in the RCA. It did not turn off - just completely died and could not be turned on again after replacing the battery. Mirion has sent that dosimeter to France for additional testing. We may be the "another

Re: [Powernet] REMP Sampling Collection

At North Anna, our RP Technicians obtain the majority of REMP samples. Sediment and fish samples are obtained by our Corporate Biologists. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.c

Re: [Powernet] [External] Efficiency Bulletin 17-21 Weekly Source Checks of Portable RP Instrumentation

Ken, North Anna has implemented Efficiency Bulletin 17-21 for our portable instrumentation. Based on our evaluation on our instrument performance - all of our portable RP instrumentation are source checked weekly. No notable problems or reliability concerns have been identified since going to

[Powernet] Industry pulse on alpha instrument used to counts smears for alpha in the field

North Anna uses the Ludlum 2000s for field counting smears for alpha. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hp

Re: [Powernet] WIFI in containment on-line

North Anna currently does not use WIFI inside containment while on-line. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@h

Re: [Powernet] Process and Area Radiation Monitors

Brent, See North Anna's response noted below. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hpspowernet.org] On Behalf

Re: [Powernet] Quick Bench Marking on Neutron Dosimeter

Naureen, North Anna still uses the DMC-2000 GNs for neutron exposure. We have not switched over to the DMC 3000 Neutron Modules. We would be interested in any results you can share with the new DMC-3000 neutron dosimeters. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral

[Powernet] EG&G Ortec DSPEC for HPGes

Quick question - does anyone still use a DSPEC made by EG&G Ortec for their HPGes? Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 CONFIDENTIALITY NOTICE: This ele

Re: [Powernet] RP field instrument tamper seals

No. North Anna does not use tamper proof seals on RP Instruments. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hpspowe

Re: [Powernet] Question on Drum Control

Drums used for radioactive material are controlled by Health Physics at North Anna. This allows us to reuse empty drums for other purposes - radioactive waste, contaminated metals, decon use (wet vacuuming), equipment storage, etc. This provides an efficient means in reusing the contaminated d

Re: [Powernet] surveys following medical exposure to radiopharmaceutical

North Anna's response" 1. When a worker receives a medical exposure to a radiopharmaceutical, how do you survey of the individual? *We do not normally survey the worker unless they have entered our Protected Area without prior notification and have alarmed our contamination m

Re: [Powernet] A Quick Benchmark

See North Anna's response noted below. Barbara J. Thompson North Anna Power Station 1022 Haley Drive Mineral, Va 23117 Superintendent Health Physics Technical Services bj.thomp...@dominionenergy.com Phone: 540-894-2638 From: Powernet [mailto:powernet-boun...@hpspowernet.org] On Behalf Of Mosty

Re: [Powernet] WBC questions need answers.

1. We calibrate and maintain our whole body counters (FastScan and People Mover). We have always performed the calibrations in-house with vendor support if required. We perform confirmatory cross checks annually for our WBCs. 2. We do not have a procedure for post vendor calibrations but can

[Powernet] MCA Calibration Frequencies

Quick benchmark request on your calibration frequencies for your count room multichannel analyzers (MCAs). North Anna is looking to change from an annual calibration that includes all counting geometries to a longer period of time between calibrations. We would appreciate any information, less

Re: [Powernet] Use of Drones

Jerri, Our Engineering department has purchased a drone to allow inspection of our containment Quench Spray and Recirc Spray rings located at the top of our containment structure. They have conducted some training runs outside and inside our buildings. Drone usage is one of our innovation ide