page 1 t100eeu042307 decommissioning of the hanford burial cribs controlled area (bcca) using the...
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Decommissioning of the Hanford Burial Cribs Controlled Area (BCCA) using the Aerial Measuring
Systems Helicopter Emergency Response Acquisition Systems
Presented to: National Radiological Emergency Preparedness Conference
Location: Chicago, Illinois
Date: March 31, 2010
Vision • Service • Partnership
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Craig Lyons
National Security Technologies, LLC
Christopher BrockCH2M Hill Plateau Remediation Contract
DeVon CunninghamLockheed Martin Services, Inc
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U.S. Department of EnergyNational Nuclear Security Administration
Remote Sensing Laboratory (RSL)
RSL – Andrews
Andrews Air Force Base
Washington, D.C
RSL – Nellis
Nellis Air Force Base
Las Vegas, NV
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AMS Program• Established in 1960
• Originally supported the Nuclear Test Program
• Expanded Mission– Emergency Response– Baseline Surveys– Periodic area monitoring
Katrina Response
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CapabilitiesMission Equipment - Aircraft
Beechcraft King Air B-200 Twin-engine turbo prop IFR (all weather) rated 260 knots (300 mph) (transition speed) Range 1,130 nm (1,300 sm) Max endurance 5 hrs (without refueling)
Four-person crew• Pilot and co-pilot• Scientist/Health physicist• Technician/Technologist
Bell-412 Twin-Pac turboshaft engine IFR (all weather) rated 120 knots (140 mph) (transition speed) Range 360 nm (410 sm) Max Endurance 3 hrs (without refueling)
Ground Support• Scientist/Health physicist• Data Analyst• Aircraft mechanic
Three-person crew• Pilot and co-pilot• Technician/Technologist
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• OVERVIEW OF HANFORD AERIAL RADIOLOGICAL SURVEYS
Hanford BCCA Remediation Survey
Dates Company Aircraft Altitude Line Spacing
Detectors
July 1959 USGS Fixed-wing 500’ 1 mile 6 4”x2” NaI
1973-1974
EG&G Fixed-wing &
Helicopter
500’
150’
1300-5280’
150’
21 4”x4” NaI
40 5”x2” NaI
May-June 1978
EG&G Helicopter 200’ 250’ 20 5”x2” NaI
July-August 1988
EG&G Helicopter 200’ 400’ 8 2”x4”x16” NaI
February-March 1996
Bechtel Nevada
Helicopter 200’ 400’ 8 2”x4”x16” NaI
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Aerial Detection Mechanics
60-70 knots50-500 feet
Measurements: Gamma dose rate at height of flight Evaluation: Dose Rate at 1
meter above ground level
Local Contaminated Area
Artificial Radioactivity
Natural Radioactivity (high level) Natural Radioactivity (low level)
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Typical Survey Layout
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Low detector
•High Resolution•Discrete sampling•Slow coverage•Atmospheric attenuation is small
High detector
•Low resolution•Area averaging•Rapid coverage•Significant sensitivity loss•Atmospheric attenuation is large
500 ft1000 ft1750 ft 50 ft200 ft
Altitude Trade-Offs
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Helicopter Data Products
Detector Gross Counts
Man-made Algorithm or Specific Isotope Counts
Exposure Rate at 1 meter
Specific Isotope Surface Activity
Specific Isotope Volumetric ActivityVision • Service • Partnership
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Comparison of Emergency Response Surveys to Environmental Surveys
Vision • Service • Partnership
Parameter Emergency Response
Environmental
Contaminated Surfaces
Three Dimensional
Two Dimensional
Source Term Dynamic Stable
Infrastructure Yes No
Clean-up Level No Yes
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CHPRC1003-14.12
Hanford, Washington
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CHPRC1003-14.13
• Largest Superfund Site in America
• Unique radiation hazards• Unprecedented volumes of
contaminated water and soil• Vast number of contaminated
structures including nuclear reactors, chemical plants for the extraction of nuclear materials and evaporation ponds
Background
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CHPRC1003-14.14
• Divided into regions based upon history and sampling activities
• Liquid waste from processing facilities pumped into trenches
• Material dispersion– Wind– Animals (lesser extent)
• Trenches covered in 1969• Primary contaminants of concern
– Cs-137– Sr-90
• Soil sampling performed to develop ratios of Cs/Sr
Burial Cribs Control Area (BCCA)
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CHPRC1003-14.15
Size of the Problem
• BCCA approximately 13.4 square miles
• Approximates area/size over Chicago
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CHPRC1003-14.16
Cleanup Considerations:• Worker Safety• Risk to the Environment• Minimal Environmental Impact • Cost and Time
Options:• GPRS Handheld Surveys
– 50+ Pound Units
– Walking Survey – lat long
– Biological Hazards (i.e., snakes, spiders)
– 6-8 Months Estimate to Complete
• Tractor Surveys– Large Old Growth Sagebrush
– Protected Species Habitat
Considerations and Options
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CHPRC1003-14.17
Aerial Measuring Systems Helicopter Emergency Response Acquisition Systems
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CHPRC1003-14.18
• 200 ft elevation, 400 ft spacing
• 50 ft elevation, 75 ft spacing (inset)
Difference in Resolution
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CHPRC1003-14.19
• 50 ft Survey• Parallel Line
Spacing of 75 Feet• Large, Complex
Deposition Patterns
50 Foot Survey
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CHPRC1003-14.20
50 Foot Survey
• 50 ft Survey• Parallel Line Spacing of
75 Feet• Large, Complex
Deposition Patterns• GPS used for
Cleanup/Verification
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CHPRC1003-14.21
• Web-based geospatial data portal • Available to over 500 Hanford users• Integrates CAD, GIS and other visual
data into a common interface• Accommodates basic and advanced
GIS skills• Simple web-based administration• Map layers reusable in mapping
applications• Easy integration of application
system data (reports, charts, etc)• Assists users in accessing
environmental and project data from any web browser.
Web-Based Mapping (QMAP)
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CHPRC1003-14.22
Combines Technologies:• ESRI ArcGIS Server• ESRI ArcIMS• GeoNorth MapOptix• Custom Code
Built-in tools:• Markup• Distance• Area• Layers• Imagery• Overlays• Application Links
Technologies and Tools
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CHPRC1003-14.23
Tracking Progress
Tracking Cleanup Over Time:• Helicopter Flyover (Initial)• Verification Surveys (Ongoing)
Layering Cleanup Over Time:• Initial Survey• After Initial Remedial Actions• After Final Remedial Actions
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CHPRC1003-14.24
• GPS Location• Cleanup Areas• Hazards
Mapping Tools SupportRemediation Planning:
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CHPRC1003-14.25
Questions?