[Global] [EXTERNAL] Beaver Valley Reactor Cavity Decon Benchmark

[Coughlin, Joseph J:(Constellation Nuclear)]

See below for Braidwood......Thx Joe

From: Global <global-bounces at list.rpalara.org> On Behalf Of Fontaine, Jeffrey W
Sent: Wednesday, March 2, 2022 9:40 AM
To: global at list.rpalara.org
Cc: Ruby, Robby P <rpruby at energyharbor.com>; Coradi, David V <dcoradi at energyharbor.com>
Subject: [EXTERNAL][Global] Beaver Valley Reactor Cavity Decon Benchmark




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Beaver Valley is performing a benchmark of Reactor Cavity Decon Practices.  Your participation is appreciated.

Power Station    x     PWR         BWR____
Contact  Phone #
Email Address

  1.  Do you perform Reactor Cavity Decon with House Personnel? Supplemental Resources  If not, who do you contract with to perform the work?  House and CRPTs overseeing MMC contact laborers
  2.  Do you hydrolase the walls or cavity floor        yes
If you do, what areas do you hydrolase? Briefly describe.__walls 7ft down and floor. ______________________
______________________________________________________________________

  1.  To what contamination levels do you strive to achieve? <50k dpm/100cm2
  2.  What deconning agents if any, do you use on the walls and /or floor? Don't normally use but have approval for Alconox or hydrogen peroxide
  3.  Which types of materials/chemicals do you decon with? __x___mops
____x____rags ____x___ Scrub Pads__________ Hydrogen Peroxide
____x____high pressure washing ___________other, describe

  1.  Do you use any robotics to perform decon of the cavity?  Clean flange and vac floor prior to drain down
If so, what type           from ROV

  1.  Generally, how long does it take to decon the cavity? Time from initial RP survey to the time in which refueling re-enters the cavity  From head hit flange to RXS back to work 3.5-4 hrs
  2.  Are other groups working in the cavity in parallel with the decon crew?  No
If so, briefly describe

  1.  Estimate the amount of exposure in mRem that it takes to decon the Reactor Cavity? 350-450mrem
_______100-500 _____500-750 _____>750 mRem

  1.  What recent changes have you made to decrease the time required to decon the cavity and/or reduce the exposure that it takes to achieve your decon goal? Using pressure washer and hydrolase floor/wall tools
  2.  Do you have a detailed procedure for this activity? If so, would you consider providing a copy for us to review?  Generic procedure, detailed playbook

Please include Rob Ruby (Beaver Valley Power Station) in your response. Email: rpruby at energyharbor.com<mailto:rpruby at energyharbor.com>

Jeffrey Fontaine
ALARA Supervisor
Beaver Valley Power Station
Email  fontainej at energyharbor.com<mailto:fontainej at firstenergycorp.com>
Desk Phone 724-682-5120
Cell Phone 724-462-3423


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