Topical Report CSTC Topic 2004E

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Topical ReportCSTC Topic 2004-E

• Chemical Exposures During Closure Activities
• Geoffrey G. Gorsuch

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Team Members

• Marco S. Colalancia, CIH -- Chair, RFETS
• Billy Lee - DOE HQ Sponsor
• Geoffrey Gorsuch, CIH Co-Chair, DOE-OH
• Jenelle Morris, RFETS
• L.P. Singh, DOE-SRS
• Sally Starling, WSRC-SRS
• Fred Simmons, WSRC-SRS

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Closure Activities Targeted

• Containerized Chemical Removal
• Decontamination
• Surveillance and Maintenance
• Decommissioning
• Demolition
• Soil Remediation

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Format of Case Studies

• Introduction
• Background to site, building or operation
• Synopsis of Event
• Description of Work Performed and Exposure
  Controls
• Air Monitoring Results
• Conclusions and Recommendations

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Changes Since Interim Report

• Deleted Three (3) Studies Because of Lack of
  Sampling Data
• Added Three (3) Studies
• Two (2) to Demolition
• One (1) to Decommissioning
• There Has Been Little Support From The Complex

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Case Studies CC Removal

• Two (2) Examples
• Packaging Lead Acid Batteries at FCP
• Lead/52 BZ Samples Taken 14 Above PEL, 3 Above
  AL
• SO2/9 BZ Samples Taken None Above AL
• Hand Sorting and Preparation of Drummed Mixed
  Waste
• Barium/17 BZ Samples Taken 3 Above PEL (No
  Lead, Chromium, Cadmium Detected In Any Samples)

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Case Studies Decontamination

• One (1) Example
• InstaCote Oversized LLW to Transport Oversized
  Objects to Disposal
• MDI/3 BZ Samples Taken None Above AL

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Case Studies -S M/ Decommissioning

• Characterization of Equipment at Former Beryllium
  R D Facilities
• Beryllium/1 BZ Sample Taken Not Detectable

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Case Studies - Demolition

• Four (4) Examples
• Size Reduction of 1950s Era Uranium Metals
  Processing Building
• Lead/11 BZ Samples Taken 1 Above PEL, 3 Above
  AL (No Barium, Chromium, Cadmium Detected On Any
  Samples)
• Dismantlement and Demolition of Three Uranium
  Processing Buildings
• Lead/713 BZ Samples Taken- 236 Above PEL

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Case Studies Demolition

• Four (4) Examples (Contd)
• Dismantlement and Demolition of Uranium Refinery
• N02/102 BZ Samples Taken 1 Above Ceiling
• Removal of Concrete Wall Cap in Tritium
  Research Facility
• Quartz, Respirable Dust, Total Dust/13 BZ Samples
  Taken 2 Above ACGIH TLV for Respirable Dust, 1
  Above ACGIH TLV for Quartz

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Case Studies Soil Remediation

• Three (3) Examples
• Waste Pit Excavation and Soil/Debris Processing
• Washing of Uranium Contaminated Soil
• 27 BZ Samples Taken for Dimethylamine,
  Trimethylamine and Ammonia 3 Above 80 of
  ACGIH TLV for Trimethylamine
• 35 Area Samples For The Above 5 Above the ACGIH
  TLV for Trimethylamine
• Soil/Debris Excavation and Deposition at An
  Onsite Spill Disposal
• 24 BZ Samples Take For Quartz 1 Above ACGIH
  TLV, Others Non Detected

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Conclusions

• Successful Exposure Minimization Practices
• Decontaminate Objects/Structures/Equipment Prior
  to Decommissioning or Demolition
• Use Engineering Controls, e.g., Ventilation and
  Containment to Reduce Likelihood of Personnel
  Exposures.
• But Use Personal Protective Equipment Anyway

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Conclusions

• Good Advise
• Sample, Sample, Sample!!