bulk survey for release (bsfr) program roger fenner department of environment and conservation...
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Bulk Survey for Release (BSFR) Program
Roger FennerDepartment of Environment and ConservationDivision of Radiological HealthPresentation to Solid Waste Advisory CommitteeJuly 5, 2007
Main Objective
Is The BSFR Protective of Human Health and the
Environment?
SWAC Terminology BSFR Tennessee Department Of
Environment And Conservation Approval Process For BSFR Programs
Radiation In Our Lives Conclusion/Comments
TERMINOLOGY
rem
A Measurement Of The Biological Effective Dose Risk Of Suffering From Health Effects Following Exposure to Radiation.
TERMINOLOGY
A rem Is A Relative Large Number For The Amounts And Types Of Radiation Exposures We Will Be Discussing, Therefore We Need To Define Two Other Terms To More Appropriately Fit Our Purposes For This Meeting.
TERMINOLOGY
The millirem (mrem) Is 1/1000th Of A rem.
For Our Purposes It Is Easier to Remember That:
1000 mrem Are Equal To 1 rem
TERMINOLOGYThe Second Term Is The microrem (rem)
A microrem (rem) Is 1/1000th Of A mrem
For Our Purposes It Is Easier To Remember That:
1000 rem Are Equal To 1 mrem
TERMINOLOGY
1000 rem = 1 mrem
TERMINOLOGY
WARNINGDo Not Let Yourself Be Confused If
We Are Talking About Exposure Rates.
1 mrem/hr Is Still Equal To 1000 rem/hrAND
1 mrem/yr Is Still Equal To 1000 rem/yr
TERMINOLOGY
The Last Term I Want to Introduce Is The Term Used To Discuss How Much Radioactivity Is in Any Type of Material Including BSFR Material. It Is The Term For What We Refer To As Activity.
picoCurie (pCi)
TERMINOLOGY
1 picoCurie Is Equal To 0.037 Radioactive Decays
(Disintegrations) Every Second.
TERMINOLOGY
For Our Purposes We Are Concerned With How Many Decays Per Second Are Associated With Each Gram Of Material. So We Will Talk About
picoCuries per gram (pCi/g)
TERMINOLOGY
Three Terms To Remember
mremrempCi/g
BSFR
What Is
BULK SURVEY FOR RELEASE?
BSFR
BSFR Is A Term Used to Refer To A Licensed Process That Has Been Approved By The
Tennessee Department Of Environment And Conservation (TDEC) To Allow The Disposal Of
Materials WithEXTREMELY LOW LEVELS OF
RADIOACTIVE MATERIAL
In Class I Landfills
BSFRExample Of BSFR Materials
Soils Resins Concrete Wood Asphalt Paper, Plastic, Clothing
BSFRState Regulations For
Protection Against Radiation(SRPAR)
Rule 1200-2-5-.121
BSFR
METHOD FOR GRANTING APPROVAL OF
ALTERNATIVE DISPOSAL PROCEDURES
BSFRThis Regulatory Authority Is The Same As Provided For
In
NUCLEAR REGULATORY COMMISSION (NRC)
TITLE 10 CFR 20.2002
BSFR
Applications Are Reviewed And Evaluated Based On
5 Criteria As Per This Regulation.
BSFR1. The Description Of The
Waste To Be Disposed, Including The Physical And Chemical Properties.
2. Manner And Conditions Of Waste Disposal.
BSFR
3.Analysis And Evaluation Of Pertinent Information About The Environment Of The Disposal Site.
BSFR
4. Analysis And Procedures To Ensure That Doses
Are Maintained As Low As Reasonably Achievable
(ALARA) And Within The Dose Limits In SRPAR.
BSFR
5. The Nature And Location Of Other Potentially Affected Licensed And Unlicensed Facilities.
BSFR
How Does BSFR Work?
BSFR1. Material Is Analyzed At Each Generator’s Site For The Chemical Constituencies And To Identify Each
Radionuclide And Its Activity (pCi/g).
2. The Material Is Then Shipped According To U.S. Department Of Transportation (USDOT) Regulations
To A Processor.
BSFR3. At The Processor Each Package Is Analyzed Again To Verify The Radionuclides And Their Associated
Activities (pCi/g).
4. This Analysis Allows The Processor To Determine If The Material Meets The Predetermined Limits Authorized In Their Radioactive Material License For BSFR Disposal.
BSFR5. If The Material Meets The Predetermined Licensed Authorized
Limits And The Container Surface Dose Rate Limits And Does Not Meet The USDOT Definition For Radioactive Material It Is Then
Shipped To The Preauthorized Landfill.
BSFR
6. At the Landfill The Material Goes Through A Final Check.
Only After It Passes The Final Check Is It Disposed In The
Landfill.
BSFR
How Does TDEC Evaluate A Request For Alternative
Disposal?
BSFRThe Request Is Analyzed By The Licensing Staff The Same As Any Other Application. Which Includes:
Qualification Of Management and Health Physics Personnel
Adequacy Of Their Radiation Safety Program (Procedures, Instrumentation, Facility, Training, Etc.)
COMPUTER MODEL
RESRAD Is A Computer Program Used To Evaluate The Potential Doses From
Radioactive Material In The Ground
COMPUTER MODELHas Undergone Extensive
Review Benchmarking Verification And Validation
COMPUTER MODELUSERS OF THE MODEL
U.S. Nuclear Regulatory Commission (NRC)
U.S. Environmental Protection Agency (USEPA)
U.S. Department Of Energy (USDOE)
DOE Contractors
COMPUTER MODEL U.S. Army Corps Of Engineers
(USACE) Industrial Firms Universities Foreign Government Agencies
And Institutions (France, Spain, Germany, Russia, Taiwan, Belgium, Croatia, Malaysia, Czech Republic, Canada, and Japan)
COMPUTER MODEL
What Does The Computer Model Take Into Consideration?
RESIDENT FARMER SCENARIO
COMPUTER MODEL
COMPUTER MODEL
COMPUTER MODEL
Additional Safety Factors Added By
TDEC
COMPUTER MODEL
1. 1 mrem/yr TDEC Limit
VS 25 mrem/yr NRC Limit
COMPUTER MODEL
2. TDEC Models The Landfill As Containing Uniformly Distributed BSFR Material Producing A
1 mrem/yr Dose.
COMPUTER MODEL
COMPUTER MODEL
3. TDEC Has Limited Disposal Of Materials At BFI Middle Point To No More Than 5% Of The Total Waste Received.
COMPUTER MODEL
4. TDEC Models For No Clean Cover Soil Placed Between The Resident Farmer And The Waste
COMPUTER MODEL
COMPUTER MODEL
5. For The Unsaturated Zone Area We Only Give Credit For The Clay Liner And The Soil Buffer. (No Credit Is Given For The Plastic Liner.)
COMPUTER MODEL
6. Assume All Waste Is Present At The Concentration Limit On The Day The Site Is Closed.
COMPUTER MODEL
These Additional Safety Factors Decrease The
1 mrem/yr Designed Dose Limit For Middle Point
Significantly
RADIATION IN LIFE
RADIATION IN LIFE
Legislated Radiation Dose Limits For
TDEC, NRC, AND ALL AGREEMENT STATES
RADIATION IN LIFEGENERAL PUBLIC DOSE LIMITS
Dose Limit For A Member of the General Public (TEDE) 100
mrem/yr
Dose Limit For Release Of A Licensed Facility For Unrestricted Use (NRC and some Agreement States) 25
mrem/yr
RADIATION IN LIFE
GENERAL PUBLIC DOSE LIMITS
Dose Limit To A Member Of The General
Public Allowed In Any One Hour 2 mrem
Dose Limit For The Resident Farmer Scenario From Materials Disposed At
Middle Point Landfill 1 mrem/yr
RADIATION IN LIFE
Occupational Radiation Dose Limits
Occupational Dose Limit For Minors
500 mrem/yr
Occupational Dose Limit For Adult
5000 mrem/yr
RADIATION IN LIFE
In the United States, the Annual Estimated Average Effective Dose Equivalent From Radiation Is 360 mrem Per Adult. This Is Broken Down As:
SOURCE DOSE (mrem/yr)
PERCENT OF TOTAL
Natural
Radon 200 55%
Cosmic 27 8%
Terrestrial 28 8%
Internal 39 11%
Total Natural 300 82%
Artificial
Medical x-ray 39 11%
Nuclear Medicine 14 4%
Consumer Products 10 3%
Other
Occupational 0.9 <0.3
Nuclear Fuel Cycle <1 <0.03
Fallout <1 <0.03
Miscellaneous <1 <0.03
Total Artificial 63 18%
Total Artificial and Natural
360 100%
Natural Background in USA
Atlantic & Gulf Coastal Plain- 305 mrem/yr
Middle America- 325 mrem/yr
Rocky Mountain Plateau- 345 mrem/yr
Denver Colorado- 365 mrem/yr
Population (weighted average) 309 mrem/yr
RADIATION IN LIFEHuman body
You Are Made Up Of Chemicals, And It Should Be Of No Surprise That Some Of Them Are Radionuclides, Many Of Which You Ingest Daily In Your Water And Food.
Here Are The Estimated Concentrations Of Radionuclides Calculated For A 154 Pound Adult :
Natural Radioactivity in the Human Body
Nuclide Total Mass of Nuclide found in the Body
Total Activity of Nuclide found in the Body
Daily Intake of Nuclides
Uranium 90 micro g 30 pCi
1.9 micro g
Thorium 30 micro g 3 pCi
3 micro g
Potassium 40 17 mg 120,000 pCi
0.39 mg
Radium 31 pg 30 pCi
2.3 pg
Carbon 14 22 ng 100000 pCi
1.8 ng
Tritium 0.06 pg 600 pCi
0.003 pg
Polonium 0.2 pg 1000 pCi
~ 0.6 fg(or 0.0006
pg)
RADIATION IN LIFE
RADIATION IN LIFEFOOD
Every Food Has Some Small Amount Of Radioactivity In It. The Common Radionuclides In Food Are Potassium 40 (40K), Radium 226 (226Ra) and Uranium 238 (238U) And The Associated Progeny.
Natural Radioactivity in Food
Food Potassium (pCi/kg)
Radium 226 (pCi/kg)
Banana 3,520 1
Brazil Nuts 5,600 1,000 - 7,000
Carrot 3,400 0.6 – 2
White Potatoes 3,400 1 - 2.5
Beer 390 ---
Red Meat 3,000 0.5
Lima Bean raw 4,640 2 - 5
Drinking Water --- 0 - 0.17
RADIATION IN LIFENATURAL RADIOACTIVITY IN BUILDING MATERIALS
Common Building Materials And Their Estimated Levels Of:
Uranium, Thorium and Potassium
Material Uranium Thorium Potassium
pCi/g pCi/g pCi/g
Granite 1.7 0.22 32
Sandstone 0.2 0.19 11.2
Cement 1.2 0.57 6.4
Limestone Concrete
0.8 0.23 2.4
Sandstone Concrete
0.3 0.23 10.4
Dry wallboard
0.4 0.32 2.4
By-product gypsum
5.0 1.78 0.2
Natural gypsum
0.4 0.2 4
Wood - - 90
Clay Brick 3 1.2 18
Calculated Cosmic Ray Doses to a Person Flying in Subsonic and Supersonic Aircraft Under
Normal Solar Conditions
Route Subsonic Flight at 36,000 ft
Supersonic flight at 62,000 ft
Flight Duratio
n (hours)
Dose per Round Trip
Flight Duratio
n (hours)
Dose per Round Trip
mrem mrem
Los Angeles-Paris
11.1 4.8 3.8 3.7
Chicago-Paris 8.3 3.6 2.8 2.6
New York-Paris 7.4 3.1 2.6 2.4
New York-London
7.0 2.9 2.4 2.2
Los Angeles-New York
5.2 1.9 1.9 1.3
Sydney-Acapulco
17.4 4.4 6.2 2.1
RADIATION IN LIFEChest X-ray 2 mrem
Heart Catheterization (Skin Dose) 45000 mrem
Radiation Machine Therapy (Localized & Fractionated)
6,000,000 mrem
Thyroid Dose to Treat Graves Disease 10,000,000
mrem
Dose to the Rest of the BodyFrom the Treatment of Graves Disease
20,000 mrem
CONCLUSIONWhile Sitting In This Room Today The Dose Rate Has Fluctuated Between
2 rem/hr and 6 rem/hr
That Fluctuation Equates A Difference of
40 mrem/yr
CONCLUSION
0.1 rem/hrIs The Equivalent Of Receiving
1 mrem/yr
CONCLUSION