Lesson Learned Statement:Reduction of Asbestos Containing Material (ACM) and radioactive particulate can be achieved by using an encapsulant in the area. This can eliminate unacceptably high Derived Air Concentration (DAC) levels within the area.Discussion:The project entailed the decontamination of the Acid Recovery Pump Room (ARPR) in its entirety. Decontamination efforts encompassed the removal of all loose debris from the ARPR and vacuuming the ARPR floor. Permanent utilities to the ARPR had to be isolated. The process lines within the ARPR were drained of liquids as necessary and subsequently isolated to ensure against inadvertent intrusion of additional liquids. The tank, pumps, electrical and instrumentation components, process and utility piping, HEPA filters, and miscellaneous debris were size reduced as necessary and removed from the ARPR. The final state of the ARPR is that the walls, ceiling, and floor are free of any components or equipment.Analysis:The ARPR work area required placement of an encapsulant to reduce the level of Asbestos Containing Material (ACM) and radioactive particulate matter which was becoming entrained in the air space within the ARPR. The radioactive particulate matter specifically was causing the Derived Air Concentration (DAC) levels within the ARPR work area to become unacceptably high. The ACM particulate prevented the ARPR work area from being released as an ACM work zone.Recommended Actions:The use of the PBS on the walls, and ceiling of the ARPR work zone reduced the particulate matter entrainment.Originator:West Valley Nuclear Services, W.F.Scott, II at (716) 942-4642Validator:N/AContact:West Valley Nuclear Services, W.F.Scott, II at (716) 9424642Name Of Authorized Derivative Classifier:N/AName Of Reviewing Official:N/APriority Descriptor:Green / Good Work PracticeKeywords:DECONTAMINATION; WASTE REMOVALReferences:N/AInformation in this report is accurate to the best of our knowledge. As means of measuring the effectiveness of this report please use the "Comment" link at the bottom of this page to notify the Lessons Learned Web Site Administrator of any action taken as a result of this report or of any technical inaccuracies you find. Your feedback is important and appreciated. DOE Function / Work Categories:Decontamination & DecommissioningDemolition ISM Category:Feedback and ImprovementHazard:Personal Injury / Exposure - AsbestosPersonal Injury / Exposure - Airborne Materials
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