PFP Demolition Briefing - Hanford SitePFP Demolition Briefing May 2017. 2 PFP: Last Stop of...
Transcript of PFP Demolition Briefing - Hanford SitePFP Demolition Briefing May 2017. 2 PFP: Last Stop of...
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PFP Demolition Briefing
May 2017
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PFP: Last Stop of Plutonium Production at Hanford
Employees working in glove boxes during plutonium production at PFP. PFP produced
approximately two-thirds of the nation’s plutonium stockpile.
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PFP: The Lay of the Land
236-Z Plutonium
Reclamation
Facility (PRF)
242-Z McCluskey
Room
234-5ZPlutonium
Finishing Plant
(PFP)
291-ZFan House,
Stack
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PFP Demolition Progression
PFP – August 2010
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PFP Demolition Progression
PFP – September 2016
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PFP Demolition Progression
PRF Demolition – November 2016
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PFP Demolition Progression
PRF Demolition – December 2016
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PFP Demolition Progression
PRF Demolition – February 2017
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PFP Demolition Progression
PRF Demolition – March 2017
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PFP Demolition Progression
PRF Demolition – April 2017
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PFP Demolition Progression
PRF Gallery Glove Boxes
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PFP Demolition Progression
PRF Gallery Glove Boxes
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PFP Demolition Progression
PRF Gallery Glove Boxes
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Hazards Removed/Mitigated before Demolition
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Hazards Removed/Mitigated before Demolition
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• Demolition complete of one of
four main buildings (242-Z)
• Demolition well underway on
PRF
• Proven robust hazard mitigation,
control and monitoring
• Crews redeployed to complete
demolition preparations
• Demolition to continue through
Summer 2017
Summary of Demolition Progress
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Hazard Mitigation: Summary
Beryllium Asbestos Radiological
Maintaining beryllium controls as
a conservative measure
Postings as necessary
Extensive fogging, water
suppression and fixative used
Fully characterized according to
Hanford Site Chronic Beryllium
Disease Prevention Program
(CBDPP)
Removed 32,527 of 36,694 ft2 of
asbestos insulation (4/17/17)
All friable (easily crushed)
asbestos removed
All transite (asbestos-containing)
panels to be removed prior to
demolition
Will be fully characterized
according to EPA demolition
standards (40 CFR 61.145) and
CHPRC guidance for demolition
(PRC-GD-EP-52776)
Source term removed or
prepared for removal during
demolition
Extensive fogging, water
suppression and fixative used
Boundaries modeled by PNNL
based on conditions
Will be fully characterized
according to sampling and
analysis plan
(DOE/RL-2004-29)
Air Monitoring for All Hazards
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Conservative Demolition Prerequisites
• Real time radiological
monitoring helps control
process
• Ground maintenance, fixatives
and fencing to avoid
contamination spread
• Expeditious packaging and
load out of contaminated debris
• Modeling dictates ready for
demolition criteria
• Fixatives and fogging to control
airborne hazards
• Water runoff management
Air monitoring Demo fence/silt fencing
Precision fogger at PFP
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Hazard Mitigation: Radiological
Air Monitoring for All Hazards
• The highest contaminated items removed as a unit before, or prepared for removal during, demolition
• Residual surface contamination controlled via fixative and/or epoxy prior to demolition
• Extensive fogging, water suppression and fixative used
• Boundaries modeled by Pacific Northwest National Lab based on radiological conditions and demolition methods
242-Z painted out
Painted out gallery glove box
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Site Map – Zones and Monitoring
Outer Fence/Laydown Area HCA/ARA
Radiological Buffer Area Contamination Area
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Extended Air Monitoring
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Environmental Air Sampling Locations Near PFP
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Demolition Sequence and Duration
1 Plutonium Reclamation Facility (236-Z)Nov. 2016-July
20173 Plutonium Finishing Plant (234-5Z)
June 2017-
Aug. 2017
2 Americium Recovery Facility (242-Z) Complete! 4 Ventilation Stack and Fan House (291-Z)June 2017-
July 2017
Timeline and Sequence