ML25345A152
| ML25345A152 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 12/11/2025 |
| From: | Holtec Decommissioning International, Radiation Safety & Control Services |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML25345A092 | List:
|
| References | |
| HDI 25-039 25-107, Rev 0 | |
| Download: ML25345A152 (0) | |
Text
Industrial Use Scenario with Open Drinking Water Pathway: An Assessment of Impact on BFM DCGLep Values Technical Support Document No.25-107 Revision 0 Prepared by: ______________________________________________________
Joseph Bisson, Technical Consultant Reviewed by:
William Parish, CHP, Sr. Health Physicist Approved by: ______________________________________________________
Christopher C. Messier, Sr. Director of Engineering and Strategic Development Radiation Safety & Control Services, Inc 93 Ledge Road, Seabrook, NH 03874 1-800-525-8339 (603) 778-2871 (Outside USA) www.radsafety.com September 30,2025 RSCS Radiation Safety & Control Services
RSCS TSD 25-107 Revision 0 Page 2 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Contents 1
Introduction......................................................................................................................... 3 2
Input and Calculations......................................................................................................... 5 3
References......................................................................................................................... 16
RSCS TSD 25-107 Revision 0 Page 3 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values 1 Introduction This report is an assessment of impact that an open drinking water exposure pathway under the Industrial Use (IU) scenario has on the Basement Fill Model (BFM) DCGL values for embedded pipes (DCGLep).
RESRAD-Onsite v7.2 [1] was used to calculate probabilistic annual doses, which were then used develop DCGLep values. The DCGLep values are radionuclide-specific, based on a site-specific suite of potential radionuclides-of-concern (ROCs) [2], and correspond to the NRC dose criteria established in 10CFR20.1403 (i.e., 25 mrem/y). Table 1 lists the ROCs and their progeny radionuclides (automatically accounts for by RESRAD-Onsite 7.2 with input for several of the ROCs).
Table 1: Potential Radionuclides of Concern Identified for the OCNGS Site ROC Progeny ROC Progeny Am-241 Np-237, Th-229, U-233 Nb-94 C-14 Ni-63 Cm-243 Ac-227, Am-243, Pa-231, Pu-239, U-235 Np-237 Th-229, U-233 Cm-244 Pu-240, Ra-228, Th-228, Th-232, U-236 Pu-238 Pb-210, Po-210, Ra-226, Th-230, U-234 Cs-137 Pu-239 Ac-227, Pa-231, U-235 Co-60 Pu-240 Ra-228, Th-228, Th-232, U-236 Eu-152 Gd-152 Pu-241 Am-241, Np-237, Th-229, U-233 Eu-154 Sb-125 Te-125m Fe-55 Sr-90 H-3 Tc-99 Mn-54 The IU scenario with an open drinking water pathway is considered a less likely but plausible exposure scenario for the OCNGS site for the following reasons:
The Lacey Ordinance #93-31, which requires the owner the site to connect to the town waterline and discontinue and disconnect any water service from a water well located on his or her property.
The groundwater Classification Exception Area (CEA) delineated across a major portion of the site.
The open drinking water pathway for the IU scenario assumes that (i) Lacy Ordinance #93-31 and CEA delineation are ignored, (ii) untreated contaminated site groundwater (GW) is the sole source of drinking water available to the hypothetical receptor (a site industrial worker) while onsite, (iii) the GW used as drinking water is drawn from a well located at the downstream edge of the contamination zone (i.e., the
RSCS TSD 25-107 Revision 0 Page 4 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values point of highest groundwater contamination), (iv) the radioactive contamination levels in GW remain constant, and (v) the receptor ingests 478.5 liters of GW during an employment year.
The BFM DCGLep values are based on a scenario which assumes an instantaneous release of residual internal surface radioactivity in embedded pipes to 1m of fill directly above the concrete floors of the below-grade building foundations targeted to remain onsite at license termination (i.e., Reactor Building, Turbine Building, and Old Radwaste Building). The resulting contaminated volume (CV) is modeled as subsurface contaminated zone (CZ) covered by site soil and located entirely in the saturated zone. A full description of the embedded pipe scenario as well as the derivations of input for RESRAD-Onsite are provided in ENG-OCS-015 [3]. The configuration of CZ is shown in Figure 1.
Figure 1: Conceptual Configuration of CV for Embedded Pipes The exposure pathways assumed open are:
Direct external radiation exposure Inhalation exposure 0.91m 1m
<---- well intake depth, 4.39m (N/A for IU) ----------------
SZ ---------------------------------------->
CZ = sum CV of all 3 bldg floor areas (100% in SZ); CV = 6355m3
<--------------------------------------------------- 90m (= LPAF) ---------------------------------------------------->
Conceptual Model for Embedded Pipe DCGLs
<------------------------cover, 7.81m (area-weighted average wall height)------------------------>
fill (site cap - sand) 6.9m UZ: assumed clean basement fill material (sand) (average depth to GW4.42m)
SZ: assumed clean basement fill material (sand)
I -----------
1 a 1---------------------------------------------------------------------------------*
" 1 1
1 I
RSCS TSD 25-107 Revision 0 Page 5 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Aquatic food ingestion exposure Inadvertent ingestion of contaminated soil Ingestion of GW as the source of drinking water 2 Input and Calculations Input for the well pumping rate was determined using the method found in NUREG/CR-7267 with consideration only to drinking water (annual volume obtained from NUREG/CR-7267 [4]).
GW Use Component GW Use (m3/y)
Household NA Livestock NA Irrigation Water NA Drinking Water 1.64 Total, m3/y 1.64 The value and basis for each RESRAD-Onsite parameter are provided in Table 2.
Table 2. Input Values for RESRAD-Onsite Parameters Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Soil Concentrations Basic radiation dose limit (mrem/y)
P 3
D 25 10 CFR 20.1402 Initial principal radionuclide (pCi/g)
P 2
D 1
Unit Value Distribution coefficient, kd (values/distributions for sand soil type; assigned to contaminated zone (CZ) and saturated zone (SZ) (cm3/g))
Ac-227 P
1 S
Truncated lognormal-n NUREG/CR-7267 7.44 1.1 0.001 0.999 1700 Am-241 P
1 D
2.69E+02 (CZ, SZ) 25th percentile value Am-243 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.91 1.95 0.001 0.999 1000 C-14 P
1 D
6.13E+00 (CZ, SZ) 25th percentile value Cm-243 P
1 D
S 5.74E+02 (CZ)
Truncated lognormal-n (SZ) 25th percentile value ANL/EVS/TM-14/4 8.13 2.64 0.001 0.999 3400 Cm-244 P
1 D
S 5.74E+02 (CZ)
Truncated lognormal-n (SZ) 25th percentile value ANL/EVS/TM-14/4 8.13 2.64 0.001 0.999 3400 Co-60 P
1 D
3.71E+01 (CZ, SZ) 25th percentile value Cs-137 P
1 D
1.58E+02 (CZ, SZ) 25th percentile value Eu-152 P
1 D
6.40E+01 (CZ, SZ) 25th percentile value Eu-154 P
1 D
6.40E+01 (CZ, SZ) 25th percentile value Fe-55 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.77 0
0.001 0.999 320 Gd-152 P
1 S
Truncated lognormal-n NUREG/CR-7267 1.61 3.22 0.001 0.999 5
RSCS TSD 25-107 Revision 0 Page 6 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 H-3 P
1 D
S 4.30E-03 (CZ)
Truncated lognormal-n (SZ)
-2.81 0.5 0.001 0.999 0.06 Mn-54 P
1 D
1.66E+02 (CZ, SZ) 25th percentile value Nb-94 P
1 D
5.86E+02 (CZ, SZ) 25th percentile value Ni-63 P
1 D
2.77E+01 (CZ, SZ) 25th percentile value Np-237 P
1 D
5.49E+00 (CZ, SZ) 25th percentile value Pa-231 P
1 S
Truncated lognormal-n NUREG/CR-7267 7.6 1.1 0.001 0.999 2000 Pb-210 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.39 1.39 0.001 0.999 220 Po-210 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.61 1.79 0.001 0.999 100 Pu-238 P
1 D
1.56E+02 (CZ, SZ) 25th percentile value Pu-239 P
1 D
1.56E+02 (CZ, SZ) 25th percentile value Pu-240 P
1 D
1.56E+02 (CZ, SZ) 25th percentile value Pu-241 P
1 D
1.57E+02 (CZ, SZ) 25th percentile value Ra-226 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.04 2.08 0.001 0.999 3100 Ra-228 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.04 2.08 0.001 0.999 3100 Sb-125 P
1 D
5.07E+00 (CZ, SZ) 25th percentile value Sr-90 P
1 D
6.58E+00 (CZ, SZ) 25th percentile value Tc-99 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4
-3.22 1.1 0.001 0.999 0.04 Te-125m P
1 S
Truncated lognormal-n (CZ) 4.79E+03 (SZ)
NUREG/CR-7267 75th percentile value 6.31 3.22 0.001 0.999 550 Th-228 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 Th-229 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 Th-230 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 Th-232 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 U-233 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-234 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-235 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-236 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 Initial concentration of radionuclides present in groundwater (pCi/l)
P 3
D 0
Ground water uncontaminated Calculation Times Time since placement of material (y)
P 3
D 0
Time for calculations (y)
P 3
D 0, 1, 3, 10, 30, 100, 300, 1000 RESRAD Default Contaminated Zone Area of contaminated zone (m2)
P 2
D 6355.3 Combined CV from RB, TB, and ORB.
Thickness of contaminated zone (m)
P 2
D 1.0 Scenario assumption.
RSCS TSD 25-107 Revision 0 Page 7 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Length parallel to aquifer flow (m)
P 2
D 90 Set to diameter of CZ.
Does the initial contamination penetrate the water table?
Yes Based on site features and RB dimensions.
Contaminated fraction below water table D
1.0 Entire CV assumed in SZ Cover and Contaminated Zone Hydrological Data Cover depth (m)
P 2
D 7.81 Area-weighted value for bldg. wall heights.
Cover density (g/cm3)
P 2
S Truncated Normal Site soil type = sand (2017 Hydrogeologic Investigation Report).
Input for density of fill material = NUREG/CR-7267 density distribution for site soil type - sand.
1.5105 0.159 0.001 0.999 1.5105 Cover erosion rate (m/y)
P 2
D 6E-04 Assumed final site grade is level. Input for erosion rate = NUREG/CR-7267 erosion rate for site with shallow slope (i.e.,
relatively level)
Density of contaminated zone (g/cm3)
P 1
S D
Truncated Normal (all ROCs except H-3) 1.62E+00 (H-3)
Site soil type = sand (2017 Hydrogeologic Investigation Report).
Input for density of fill material = NUREG/CR-7267 density distribution for site soil type - sand.
75th percentile value 1.5105 0.159 0.001 0.999 1.5105 Contaminated zone erosion rate (m/y)
P 2
D 6E-04 Assumed same as cover.
Contaminated zone total porosity P
2 S
Bounded Normal NUREG/CR-7267 distribution for site soil type -sand 0.43 0.06 0.2446 0.6154 0.43 Contaminated zone field capacity P
3 D
0.18 Value based on site-specific soil type (sand);
calculated using equation in NUREG/CR-7267 Contaminated zone hydraulic conductivity (m/y)
P 2
D 2741 2017 Hydrogeologic Investigation Report Contaminated zone b parameter P
2 S
Bounded Log Normal n NUREG/CR-7267 distribution for site soil type - sand
- 0.0253 0.216 0.501 1.90 0.975 Humidity in air (g/m3)
P 3
D 6.6 From Regional and Site-Specific Absolute Humidity Data for Use in Tritium Dose Calculations.
Evapotranspiration coefficient P
2 S
D Uniform (all ROCs except H-3) 6.87E-01 (H-3)
NUREG/CR-7267 distribution 75th percentile value 0.5 0.75 NR NR 0.625
RSCS TSD 25-107 Revision 0 Page 8 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Average annual wind speed (m/s)
P 2
D 3.13 Internet search:
https://www.windfinder.c om/windstatistics/oyster_c reek_barnegat_bay Precipitation (m/y)
P 2
D 1.4 Annual Report on the Meteological Program at Oyster Creek Generating Station - average annual precipitation for 2015 through 2020 Irrigation (m/y)
B 3
S Uniform Distribution determined using methodology described in Data Collection Handbook and NUREG/CR-6697 0
0.08 0.04 Irrigation mode B
3 D
Overhead Overhead irrigation is common practice for crops in U.S.
Runoff coefficient P
2 D
0.2 Value determined using methodology described in Data Collection Handbook and NUREG/CR-7267 Watershed area for nearby stream or pond (m2)
P 3
D 1.01E+08 NJ-GeoWeb (NJDEP BGIS)
Accuracy for water/soil computations 3
D 1.00E-03 RESRAD Default Saturated Zone Hydrological Data Density of saturated zone (g/cm3)
P 1
S Truncated Normal NUREG/CR-7267 distribution for site soil type -sand 1.5105 0.159 0.001 0.999 1.5105 Saturated zone total porosity P
1 S
Truncated Normal NUREG/CR-7267 distribution for site soil type -sand 0.43 0.06 0.001 0.999 0.43 Saturated zone effective porosity P
1 D
0.25 2017 Hydrogeologic Investigation Report Saturated zone field capacity P
3 D
0.18 Value based on site-specific soil type (sand);
calculated using equation in NUREG/CR-7267 Saturated zone hydraulic conductivity (m/y)
P 1
D 2741 2017 Hydrogeologic Investigation Report Saturated zone hydraulic gradient P
2 D
D S
3.25E-02 (all ROCs except H-3 and Tc-99) 1.75E-02 (H-3)
Uniform (Tc-99) 75th percentile value 25th percentile value 2017 Hydrogeologic Investigation Report 0.01 0.04 0.025 Saturated zone b
parameter P
2 S
Bounded Log Normal n NUREG/CR-7267 distribution for site soil type - sand
- 0.0253 0.216 0.501 1.90 0.975 Water table drop rate (m/y)
P 3
D 0
CZ in SZ
RSCS TSD 25-107 Revision 0 Page 9 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Well pump intake depth (m
below water table)
P 2
D 4.42 Set to the distance from the water table to the lower boundary of contamination in the aquifer at the downgradient edge of the contaminated zone. NOTE:
no impact for IU scenario.
Model:
Nondispersion (ND) or Mass-Balance (MB)
P 3
D ND ND model recommended for contaminant areas
>1,000 m2 Well pumping rate (m3/y)
P 2
D 1.64 Unsaturated Zone Hydrological Data Number of unsaturated zone strata P
3 D
0 UZ above CZ and is assumed part of cover.
Unsat.
zone 1,
thickness (m)
P 1
D N/A Input not required when number of UZ = 0.
Unsat. zone 1, soil density (g/cm3)
P 2
S N/A Input not required when number of UZ = 0.
Unsat. zone 1, total porosity P
2 S
N/A Input not required when number of UZ = 0.
Unsat.
zone 1,
effective porosity P
2 D
N/A Input not required when number of UZ = 0.
Unsat. zone 1, field capacity P
3 D
N/A Input not required when number of UZ = 0.
Unsat.
zone 1,
hydraulic conductivity (m/y)
P 2
D N/A Input not required when number of UZ = 0.
Unsat. zone 1, soil-specific b parameter P
2 S
N/A Input not required when number of UZ = 0.
Occupancy Inhalation rate (m3/y)
B 3
D 8400 NUREG/CR-7267 Mass loading for inhalation (g/m3)
P 2
S Continuous linear NUREG/CR-7267 2.3E-5 Exposure duration B
3 D
30 RESRAD Default Indoor dust filtration factor P
2 S
Uniform NUREG/CR-7267 0.15 0.95 0.55 Shielding
- factor, external gamma P
2 S
Bounded lognormal-n NUREG/CR-7267
-1.3 0.59 0.044 1
0.2725 Fraction of time spent indoors B
3 D
0.03 Fraction of calendar year assuming 1h/work day for daily work breaks Fraction of time spent outdoors B
3 D
0.2 Fraction of calendar year assuming 7h/work day for outside tasks Shape factor
- flag, external gamma P
3 D
Circular Circular contaminated zone assumed Ingestion, Dietary
- Fruits, vegetables, grain consumption (kg/y)
B 2
D N/A Input not required - plant ingestion pathway inactive Leafy vegetable consumption (kg/y)
B 3
D N/A Input not required - plant ingestion pathway inactive
RSCS TSD 25-107 Revision 0 Page 10 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Milk consumption (L/y)
B 2
D N/A Input not required - milk ingestion pathway inactive Meat and poultry consumption (kg/y)
B 3
D N/A Input not required - meat ingestion pathway inactive Fish consumption (kg/y)
B 3
D 20.6 NUREG/CR-5512, Vol. 3 Other seafood consumption (kg/y)
B 3
D 0.9 RESRAD Default Soil ingestion rate (g/yr)
B 2
D Triangular NUREG/CR-7267 Drinking water intake (L/y)
B 2
D 478.5 NUREG/CR-5512 Contamination fraction of drinking water P
3 D
1.0 DW assumed from GW Contamination fraction of household water P
3 N/A Input not required - water pathway inactive Contamination fraction of livestock water P
3 D
N/A Input not required drinking water/ingestion pathways inactive Contamination fraction of irrigation water P
3 D
N/A Input not required - plant ingestion pathway inactive Contamination fraction of aquatic food P
2 D
6.09E-01 (all ROCs) 75th percentile value Contamination fraction of plant food P
3 D
N/A Input not required - plant ingestion pathway inactive Contamination fraction of meat P
3 D
N/A Input not required - meat ingestion pathway inactive Contamination fraction of milk P
3 D
N/A Input not required - milk ingestion pathway inactive Ingestion, Non-Dietary Livestock fodder intake for meat (kg/d)
M 3
D N/A Input not required - meat ingestion pathway inactive Livestock fodder intake for milk (kg/d)
M 3
D N/A Input not required - milk ingestion pathway inactive Livestock water intake for meat (L/d)
M 3
D N/A Input not required - water ingestion pathway inactive Livestock water intake for milk (L/d)
M 3
D N/A Input not required - milk ingestion pathway inactive Livestock soil intake (kg/d)
M 3
D N/A Input not required - meat ingestion pathway inactive Mass loading for foliar deposition (g/m3)
P 3
D N/A Input not required - plant ingestion pathway inactive Depth of soil mixing layer (m)
P 2
S Triangular NUREG/CR-7267 0
0.15 0.6 0.23 Depth of roots (m)
P 1
S N/A Input not required - plant ingestion pathway inactive 0.3 4
1.85 Drinking water fraction from ground water P
3 D
1.0
RSCS TSD 25-107 Revision 0 Page 11 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Household water fraction from ground water P
3 N/A Input not required drinking water pathway inactive Livestock water fraction from ground water P
3 D
N/A Input not required drinking water/meat ingestion pathways inactive Irrigation fraction from ground water P
3 D
N/A Input not required drinking water pathway inactive Wet weight crop yield for Non-Leafy (kg/m2)
P 2
S N/A Input not required - plant ingestion pathway inactive 0.56 0.48 0.001 0.999 1.75 Wet weight crop yield for Leafy (kg/m2)
P 3
D N/A Input not required - plant ingestion pathway inactive Wet weight crop yield for Fodder (kg/m2)
P 3
D N/A Input not required - meat ingestion pathway inactive Growing Season for Non-Leafy (y)
P 3
D N/A Input not required - plant ingestion pathway inactive Growing Season for Leafy (y)
P 3
D N/A Input not required - plant ingestion pathway inactive Growing Season for Fodder (y)
P 3
D N/A Input not required - meat ingestion pathway inactive Translocation Factor for Non-Leafy P
3 D
N/A Input not required - plant ingestion pathway inactive Translocation Factor for Leafy P
3 D
N/A Input not required - plant ingestion pathway inactive Translocation Factor for Fodder P
3 D
N/A Input not required - meat ingestion pathway inactive Weathering Removal Constant for Vegetation (1/y)
P 2
S N/A Input not required - plant ingestion pathway inactive 5.1 18 84 33 Wet Foliar Interception Fraction for Non-Leafy P
3 D
N/A Input not required - plant ingestion pathway inactive Wet Foliar Interception Fraction for Leafy P
2 S
N/A Input not required - plant ingestion pathway inactive 0.06 0.67 0.95 0.58 Wet Foliar Interception Fraction for Fodder P
3 D
N/A Input not required - meat ingestion pathway inactive Dry Foliar Interception Fraction for Non-Leafy P
3 D
N/A Input not required - plant ingestion pathway inactive Dry Foliar Interception Fraction for Leafy P
3 D
N/A Input not required - plant ingestion pathway inactive Dry Foliar Interception Fraction for Fodder P
3 D
N/A Input not required - meat ingestion pathway inactive Storage times of contaminated foodstuffs (days):
Fruits, non-leafy vegetables, and grain B
3 D
N/A Input not required - plant ingestion pathway inactive Leafy vegetables B
3 D
N/A Input not required - plant ingestion pathway inactive Milk B
3 D
N/A Input not required - milk ingestion pathway inactive
RSCS TSD 25-107 Revision 0 Page 12 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Meat and poultry B
3 D
N/A Input not required - meat ingestion pathway inactive Fish B
3 D
7 RESRAD Default Crustacea and mollusks B
3 D
7 RESRAD Default Well water B
3 D
1.0 RESRAD default Surface water B
3 D
N/A Input not required drinking water pathway inactive Livestock fodder B
3 D
N/A Input not required - meat ingestion pathway inactive Special Radionuclides (C-14)
C-12 concentration in water (g/cm3)
P 3
D 2.00E-05 RESRAD Default C-12 concentration in contaminated soil (g/g)
P 3
D 3.00E-02 RESRAD Default Fraction of vegetation carbon from soil P
3 D
2.00E-02 RESRAD Default Fraction of vegetation carbon from air P
3 D
9.80E-01 RESRAD Default C-14 evasion layer thickness in soil (m)
P 2
S Triangular NUREG/CR-7267 0.2 0.3 0.6 0.3 C-14 evasion flux rate from soil (1/s)
P 3
D 7.00E-07 RESRAD Default C-12 evasion flux rate from soil (1/s)
P 3
D 1.00E-10 RESRAD Default Fraction of grain in beef cattle feed B
3 D
0.2500 NUREG/CR-7267 Fraction of grain in milk cow feed B
3 D
0.1000 NUREG/CR-7267 Inhalation Dose Conversion Factors (mrem/pCi inhaled) from FGR11 (contained in RESRAD Dose Conversion Library)
Ingestion Dose Conversion Factors (mrem/pCi ingested) from FGR11 (contained in RESRAD Dose Conversion Library)
Plant Transfer Factors (pCi/g plant)/(pCi/g soil)
Note: Plant ingestion pathway closed - input for plant transfer factors not required for Industrial Use dose calculations.
Meat Transfer Factors (pCi/kg)/(pCi/d)
Note: Meat ingestion pathway closed - input for meat transfer factors not required for Industrial Use dose calculations.
Milk Transfer Factors (pCi/L)/(pCi/d)
Note: Milk ingestion pathway closed - input for milk transfer factors not required for Industrial Use dose calculations.
Bioaccumulation (Transfer) Factors for Fish ((pCi/kg)/(pCi/L))
Ac-227 P
2 S
Lognormal-n NUREG/CR-7267 3.2 1.1 2.5E+01 Am-241 P
2 D
5.14E+02 75th percentile value Am-243 P
2 S
Lognormal-n NUREG/CR-7267 5.5 1.1 2.4E+02 C-14 P
2 D
9.28E+05 75th percentile value Cm-243 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01 Cm-244 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01 Co-60 P
2 D
1.35E+02 75th percentile value Cs-137 P
2 D
4.48E+03 75th percentile value Eu-152 P
2 D
3.95E+02 75th percentile value
RSCS TSD 25-107 Revision 0 Page 13 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Table 2. Input Values for DCGL Calculations: OC BFM Embedded Pipe Scenario to Support the Industrial Use Compliance Scenario - Open DW Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Eu-154 P
2 D
3.95E+02 75th percentile value Fe-55 P
2 D
5.90E+02 75th percentile value Gd-152 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01 H-3 P
2 D
1.07E+00 75th percentile value Mn-54 P
2 S
Lognormal-n NUREG/CR-7267 5.5 1.9 2.4E+02 Nb-94 P
2 D
6.27E+02 75th percentile value Ni-63 P
2 D
3.01E+01 75th percentile value Np-237 P
2 D
4.21E+01 75th percentile value Pa-231 P
2 S
Lognormal-n NUREG/CR-7267 2.3 1.1 1.0E+01 Pb-210 P
2 S
Lognormal-n NUREG/CR-7267 3.2 1.1 2.5E+02 Po-210 P
2 S
Lognormal-n NUREG/CR-7267 3.6 1.5 3.7E+01 Pu-238 P
2 D
4.32E+04 75th percentile value Pu-239 P
2 D
4.32E+04 75th percentile value Pu-240 P
2 D
4.32E+04 75th percentile value Pu-241 P
2 D
4.32E+04 75th percentile value Ra-226 P
2 S
Lognormal-n NUREG/CR-7267 1.4 1.9 4.1E+00 Ra-228 P
2 S
Lognormal-n NUREG/CR-7267 1.4 1.9 4.1E+00 Sb-125 P
2 D
1.00E+02 75th percentile value Sr-90 P
2 D
7.72E+00 75th percentile value Tc-99 P
2 D
4.21E+01 75th percentile value Te-12m P
2 S
Lognormal-n NUREG/CR-7267 5.0 0.4 1.5E+02 Th-228 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 Th-229 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 Th-230 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 U-233 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 U-234 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 U-235 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 U-236 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 Bioaccumulation Factors for Crustacea/ Mollusks ((pCi/kg)/(pCi/L)) RESRAD default value for each radionuclide applied Graphics Parameters Number of points 32 RESRAD Default Spacing log RESRAD Default Time integration parameters Maximum number of points for dose 17 RESRAD Default The DCGLep value for each ROC was calculated as follows:
DCGLep,i = (25)÷[(POMi)*( Cf)].
Where:
DCGLep,i = embedded pipe DCGL value for ROC i", pCi/m2 25 = the NRC radiological criterion for unrestricted release, mrem/y
RSCS TSD 25-107 Revision 0 Page 14 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values POMi = the calculated POM value for ROC i, mrem/y per pCi/g Cf = Concentration in fill, pCi/g per 1 pCi/m2 initial surface contamination And Cf = ((Pc)(Psa))÷((Fs)(CZt)(Ds)(CF))
Where:
Cf = concentration in fill, pCi/g per 1 pCi/m2 initial surface contamination Pc = the initial pipe surface contamination, 1 pCi/m2 (ENG-OCS-015)
Psa = pipe internal surface area, 470.6 m2 (ENG-OCS-015)
Fsa = floor surface area, 6355.3 m2 (ENG-OCS-015)
CZt = thickness of the CZ, 1m (ENG-OCS-015)
Ds = soil density, 1.5105 g/cm3 (ENG-OCS-015)
CF = unit conversion factor, 106cm3/1m3 Cf = (1)(470.6)÷[(6355.3)(1)(1.5105)(106)] = 4.9E-08 pCi/g The calculated POM dose for each ROC and the DCGLep values are provided in Table 3.
Table 3. BFM DCGLep Values with Open DW Pathway ROC POM Dose (mrem/y)
DCGLep (pCi/m2)
Am-241 1.46E+00 3.49E+08 C-14 1.81E-01 2.81E+09 Cm-243 4.69E-01 1.09E+09 Cm-244 3.75E-01 1.36E+09 Co-60 7.33E-02 6.96E+09 Cs-137 3.38E-02 1.51E+10 Eu-152 1.07E-02 4.79E+10 Eu-154 1.55E-02 3.29E+10 Fe-55 1.81E-04 2.82E+12 H-3 2.26E-02 2.25E+10 Mn-54 1.24E-03 4.12E+11 Nb-94 1.50E-03 3.41E+11 Ni-63 2.29E-03 2.23E+11 Np-237 9.55E+01 5.34E+06 Pu-238 2.21E+00 2.31E+08 Pu-239 3.24E+00 1.58E+08 Pu-240 3.21E+00 1.59E+08 Pu-241 5.03E-02 1.02E+10 Sb-125 5.52E-02 9.25E+09 Sr-90 2.51E+00 2.03E+08 Tc-99 3.91E-01 1.31E+09
RSCS TSD 25-107 Revision 0 Page 15 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values An open DW pathway lowers the DCGLep values for all ROCs as shown in Table 4.
Table 4. Impact of DW Pathway on BFM DCGLep Values BFM DCGLep Value (pCi/m2)
ROC Without DW Pathwaya With DW Pathway Am-241 2.02E+11 3.49E+08 C-14 3.59E+09 2.81E+09 Cm-243 1.01E+12 1.09E+09 Cm-244 4.18E+11 1.36E+09 Co-60 7.94E+13 6.96E+09 Cs-137 4.43E+12 1.51E+10 Eu-152 1.32E+14 4.79E+10 Eu-154 1.29E+14 3.29E+10 Fe-55 9.22E+16 2.82E+12 H-3 6.89E+15 2.25E+10 Mn-54 2.42E+15 4.12E+11 Nb-94 1.45E+14 3.41E+11 Ni-63 1.83E+15 2.23E+11 Np-237 2.39E+10 5.34E+06 Pu-238 2.91E+09 2.31E+08 Pu-239 1.13E+09 1.58E+08 Pu-240 1.14E+09 1.59E+08 Pu-241 4.43E+13 1.02E+10 Sb-125 5.17E+13 9.25E+09 Sr-90 4.64E+12 2.03E+08 Tc-99 1.03E+13 1.31E+09 a Values from ENG-OCS-015.
RSCS TSD 25-107 Revision 0 Page 16 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values 3 References
- 1. ANL/EVS/TM-18/1, RESRAD-Onsite 7.2 Users Guide, April 2018
- 2. TSD 25-032, Radionuclides of Concern in Support of the Oyster Creek Station License Termination Plan, Revision 0
- 3. ENG-OCS-015, Basement Fill Model: Calculation of Embedded Pipe DCGL Values, March 6, 2024
- 4. NUREG/CR-7267, Default Parameter Values and Distribution in RESRAD-ONSITE V7.2, RESRAD-BUILD V3.5, and RESRAD-OFFSITE V4.0 Computer Codes, February 2020
RSCS TSD 25-107 Revision 0 Page 17 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Pages from the RESRAD-Onsite reports showing the POM dose values for the BFM embedded pipe scenario by radionuclide:
Am-241 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 09:01 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Am241 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\AM241\\BFM-IU-EP_DW_AM241.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.463E+00 C-14 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 09:40 Page 20 Probabilistic results summary : BFM-IU-EP_DW_C14 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\C14\\BFM-IU-EP_DW_C14.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 4.924E+00 1.814E-01 Cm-243 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 10:01 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Cm243 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\CM243\\BFM-IU-EP_DW_CM243.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 4.688E-01 Cm-244 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 14:56 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Cm244 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\CM244\\BFM-IU_EP_DW_CM244.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 3.749E-01 Co-60 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 12:03 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Co60 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\CO60\\BFM-IU-EP_DW_CO60.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 7.329E-02 Cs-137 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 12:14 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Cs137 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\CS137\\BFM-IU-EP_DW_CS137.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 3.384E-02 Eu-152 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 12:25 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Eu152 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\EU152\\BFM-IU-EP_DW_EU152.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.066E-02
RSCS TSD 25-107 Revision 0 Page 18 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Eu-154 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 12:35 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Eu154 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\EU154\\BFM-IU_EP_DW_EU154.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.550E-02 Fe-55 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 12:45 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Fe55 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\FE55\\BFM-IU_EP_DW_FE55.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.807E-04 H-3 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 13:05 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_H3 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\H3\\BFM-IU_EP_DW_H3.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.263E-02 Mn-54 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 13:17 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_EP_DW_Mn54 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\MN54\\BFM-IU_EP_DW_MN54.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.237E-03 Nb-94 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 13:30 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Nb94 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\NB94\\BFM-IU_EP_DW-NB94.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.455E+02 1.498E-03 Ni-63 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 13:42 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Ni63 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\NI63\\BFM-IU_EP_DW_NI63.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.093E+01 2.288E-03 Np-237 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 13:56 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Np237 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\NP237\\BFM-IU_EP_DW_NP237.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.000E+00 9.552E+01
RSCS TSD 25-107 Revision 0 Page 19 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLep Values Pu-238 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 16:18 Page 20 Probabilistic results summary : BFM_IU_EP_DW_Pu238 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\PU238\\IBFM-IU_EP_DW_PU238.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.213E+00 Pu-239 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 17:18 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Pu239 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\PU239\\BFM-IU_EP_DW_PU239.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.000E+02 3.235E+00 Pu-240 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 17:44 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Pu240 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\PU240\\BFM-IU_EP_DW_PU240.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.000E+02 3.209E+00 Pu-241 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/28/2025 09:11 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Pu241r1 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\PU241\\BFM-IU_EP_DW_PU241R1.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.162E+01 5.026E-02 Sb-125 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 14:25 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Sb125 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\SB125\\BFM-IU_EP_DW_SB125.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 5.518E-02 Sr-90 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 14:35 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Sr90 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\SR90\\BFM-IU_EP_DW_SR90.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.000E+00 2.511E+00 Tc-99 Results:
1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/24/2025 14:44 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_EP_DW_Tc99 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RESRAD OC FILES\\BFM_IU_DW_EP\\TC99\\BFM-IU_EP_DW_TC99.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 3.908E-01