ML25345A151
| ML25345A151 | |
| 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 25-105, Rev 0 | |
| Download: ML25345A151 (0) | |
Text
Industrial Use Scenario with Open Drinking Water Pathway: An Assessment of Impact on BFM DCGLw/f Values Technical Support Document No.25-105 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 29,2025
~ RSCS Rad1at1or Safety & Cortrol Services RSCS Radiation Safety & Control Services
RSCS TSD 25-105 Revision 0 Page 2 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Contents 1
Introduction......................................................................................................................... 3 2
Input and Calculations......................................................................................................... 4 2.1 DCGLIR Calculations........................................................................................................ 4 2.2 Drilling Spoils............................................................................................................... 16 2.3 Excavated Concrete..................................................................................................... 18 2.4 Calculation of DCGLw/f Values...................................................................................... 21 3
References......................................................................................................................... 23
RSCS TSD 25-105 Revision 0 Page 3 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F 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 DCGL values for concrete foundation walls and floors (i.e., DCGLW/F values).
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 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 DCGLW/F values incorporate 3 sub-scenarios: instantaneous release (IR), drilling spoils (DS), and excavated concrete (EC). Details for these scenarios are found in TSD 24-063 [1].
RESRAD-Onsite v7.2 [2] was used to calculate probabilistic annual doses. The exposure pathways assumed open are:
Direct external radiation exposure Inhalation exposure Aquatic food ingestion exposure Inadvertent ingestion of contaminated soil Ingestion of GW as the source of drinking water The DCGLW/F values developed in this document correspond to the NRC dose criteria established in 10CFR20.1403 (i.e., 25 mrem/y). This calculation addresses only the development of BFM DCGLW/F values for the OCNGS site.
A site-specific suite of potential radionuclides-of-concern (ROCs) has been identified for the OCNGS site
[3] and is listed in Table 1. RESRAD-Onsite 7.2 automatically accounts for progeny radionuclides with input for several of the ROCs. Progeny radionuclides are also listed in Table 1.
RSCS TSD 25-105 Revision 0 Page 4 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values 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 Each of the 3 sub-scenarios is described and evaluated separately in this calculation. Radionuclide-specific DCGL values are calculated for each scenario and combined to produce the final DCGLW/F values.
IR scenario: Calculations for DCGLIR values assumed the site modeling described in TSD 24-063. Except for the 25th or 75th percentile values for risk-sensitive parameters (documented in TSD 24-055 [4]) and the input required for the drinking water exposure pathway, input values for RESRAD-Onsite parameters are the same as those used in the probabilistic analysis.
DS and EC scenarios: Calculations for DCGLDS and DCGLEC values are based on contaminated volume/area calculations with application of peak of the means (POM) doses and DCGL values documented in TSD 24-063 and soil area factors (AFs) documented in ENG-OCS-009 [5].
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 [6]).
GW Use Component GW Use (m3/y)
Household NA Livestock NA Irrigation Water NA Drinking Water 1.64 Total, m3/y 1.64
RSCS TSD 25-105 Revision 0 Page 5 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values 2.1 DCGLIR Calculations The IR scenario assumes a contaminated volume (CV) is created by an instantaneous release of radioactive contamination from sub-surface concrete surfaces to fill material immediately within 1m from the concrete surfaces. RESRAD-Onsite modeling assumes that the CV is a homogenous mixture, covered by 3ft (0.91m) of site soil, and extends to a depth of the Reactor Building foundation, 43ft (13.1m). Modeling places portions of the CV above and below the average groundwater table. The below-grade concrete structures are assumed not to impede groundwater flow. The conceptual configuration of the contaminated zone (CZ) created by the CV is shown in Figure 1.
Figure 1 Conceptual Configuration of the CV The probabilistic mode of the RESRAD-Onsite code was used to calculate ROC-specific peak of the mean (POM) doses associated with soil concentrations equal to 1 pCi/g. The POM doses were then used to develop DCGLIR values.
The value and basis for each RESRAD-Onsite parameter are provided in Table 2.
3ft (0.91m) cover 26.74% above GW table GW table @ 14.5ft (4.42m) 73.26% below GW table
<---------------- CZ width = 145.3ft (44.3m) = LPAF -------------------->
yellow = CV
<----------- CZ thickness = RB wall height 43ft (13.11m)------->
<--- Final Site Cover I
RSCS TSD 25-105 Revision 0 Page 6 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters: IU BFM IR Scenario with Open Drinking Water Pathway Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water 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 coefficients (cm3/g) for sand soil type assigned to CZ and SZ except as noted 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 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 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 25th percentile value Cs-137 P
1 D
1.58E+02 25th percentile value Eu-152 P
1 D
6.40E+01 25th percentile value Eu-154 P
1 D
6.40E+01 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
H-3 P
1 S
Truncated lognormal-n NUREG/CR-7267
-2.81 0.5 0.001 0.999 0.06 Mn-54 P
1 D
1.66E+02 25th percentile value Nb-94 P
1 D
S 3.81E+03 (CZ)
Truncated lognormal-n (SZ) 75th percentile value NUREG/CR-7267 7.31 1.39 0.001 0.999 1500 Ni-63 P
1 D
2.77E+01 25th percentile value Np-237 P
1 D
5.49E+00 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 25th percentile value Pu-239 P
1 D
1.56E+02 25th percentile value Pu-240 P
1 D
1.56E+02 25th percentile value Pu-241 P
1 D
1.57E+02 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
RSCS TSD 25-105 Revision 0 Page 7 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Sb-125 P
1 D
S 5.07E+00 (CZ)
Truncated lognormal-n (SZ) 25th percentile value ANL/EVS/TM-14/4 2.83 1.79 0.001 0.999 17 Sr-90 P
1 D
6.58E+00 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 NUREG/CR-7267 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 1539.6 Based on contaminated volume and height of RB wall.
Thickness of contaminated zone (m)
P 2
D 13.1 CZ thickness set to RB wall height.
Length parallel to aquifer flow (m)
P 2
D 44.3 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
.7326 Based on OCGS site data; average groundwater depths recorded for wells around the RB, TB, and ORB..
Cover and Contaminated Zone Hydrological Data Cover depth (m)
P 2
D 0.91 3ft cover assumed.
RSCS TSD 25-105 Revision 0 Page 8 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Cover density (g/cm3)
P 2
D S
1.40E+00 (Co-60, Cs-137, Eu-152, Eu-154, Mn-54, Nb-94, Sb-125)
Truncated Normal (all other ROCs) 25th percentile value Site soil type = sand (OCNGS 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 Truncated Normal Site soil type = sand (OCNGS 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 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 OCNGS 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 D
S 5.62E-01 (Fe-55)
Uniform (all other ROCs) 25th percentile value NUREG/CR-7267 distribution 0.5 0.75 NR NR 0.625 Average annual wind speed (m/s)
P 2
D 3.13 Internet search:
https://www.windfinder.c om/windstatistics/oyster_c reek_barnegat_bay
RSCS TSD 25-105 Revision 0 Page 9 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 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 NR NR NR NR 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 OCNGS 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 OCNGS Hydrogeologic Investigation Report Saturated zone hydraulic gradient P
2 D
S 1.75E-02 (H-3, Nb-94, Tc-
- 99)
Uniform (all other ROCs) 25th percentile value OCNGS Hydrogeologic Investigation Report 0.01 0.04 0.025 Saturated zone b
parameter P
2 S
N/A Input not required when CZ is in SZ Water table drop rate (m/y)
P 3
D 0
CZ in SZ Well pump intake depth (m
below water table)
P 2
D 9.6 Input has no impact because drinking water exposure pathway is not an open pathway.
RSCS TSD 25-105 Revision 0 Page 10 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 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
S 1.64 Unsaturated Zone Hydrological Data Unsaturated zones P
3 D
0 See Figure 1 below Unsat.
zone 1,
thickness (m)
P 1
D N/A UZ strata set to 0; input for UZ parameters not used.
Unsat. zone 1, soil density (g/cm3)
P 2
S N/A UZ strata set to 0; input for UZ parameters not used.
Unsat. zone 1, total porosity P
2 S
N/A UZ strata set to 0; input for UZ parameters not used.
Unsat.
zone 1,
effective porosity P
2 D
N/A UZ strata set to 0; input for UZ parameters not used.
Unsat. zone 1, field capacity P
3 D
N/A UZ strata set to 0; input for UZ parameters not used.
Unsat.
zone 1,
hydraulic conductivity (m/y)
P 2
D N/A UZ strata set to 0; input for UZ parameters not used.
Unsat. zone 1, soil-specific b parameter P
2 S
N/A UZ strata set to 0; input for UZ parameters not used.
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 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
RSCS TSD 25-105 Revision 0 Page 11 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Soil ingestion rate (g/yr)
B 2
D Triangular NUREG/CR-7267 0
18.3 36.5 18.3 Drinking water intake (L/y)
B 2
D 478.5 NUREG/CR-5512 Contamination fraction of drinking water P
3 D
1.0 RESRAD default - all DW 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
S 6.10E-01 (All ROCs except the 5 ROCs listed for distribution below)
Triangular (Co-60, Eu-152, Eu-154, Mn-54, Nb-94) 75th percentile value NUREG/CR-7267 0
0.39 1.0 0.39 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 All DW from GW 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
RSCS TSD 25-105 Revision 0 Page 12 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 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 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 RESRAD default
RSCS TSD 25-105 Revision 0 Page 13 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 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 Factor Library)
Ingestion Dose Conversion Factors (mrem/pCi ingested) from FGR11 (contained in RESRAD Dose Conversion Factor 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 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 S
Lognormal-n NUREG/CR-7267 4.3 0.9 7.4E+01 Cs-137 P
2 D
4.47E+03 75th percentile value Eu-152 P
2 S
Lognormal-n NUREG/CR-7267 4.9 1.6 1.3E+02 Eu-154 P
2 S
Lognormal-n NUREG/CR-7267 4.9 1.6 1.3E+02 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
RSCS TSD 25-105 Revision 0 Page 14 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 2. Input Values for RESRAD-Onsite Parameters:
IU BFM IR Scenario with Open Drinking Water Pathway Parameter (unit)
Type Priority Treatment Value/Distribution Basis Distribution's Statistical Parameters Median/
Mean 1
2 3
4 Nb-94 P
2 S
Lognormal-n NUREG/CR-7267 5.7 1.1 3.0E+02 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
7.71E+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 In addition to the RESRAD-Onsite results, calculations of the ROC-specific DCGLIR values relied on 2 other calculations. The first is the calculation of the activity concentrations in fill material (pCi/g) that corresponded to surface activity concentrations equal to 1 pCi/m2. This was accomplished using the following equation:
Cfill = As/((Vfill x 1E6 x Dfill))
Eq. 1 Where:
Cfill = activity concentration in the fill material (pCi/g) per surface area activity concentration = 1 pCi/m2 As = unit surface area activity concentration assumed over 1 m2 of concrete surface (1 pCi)
RSCS TSD 25-105 Revision 0 Page 15 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Vfill = unit volume of fill material (1 m3) 1E6 = conversion factor (cm3 per m3)
Dfill = density of fill material (g/cm3)
The mean value of the density distribution for sand (1.5105 g/cm3) was applied for all ROCs.
Cfill = 1pCi/(1m3
- 1E+06 cm3/m3
- 1.5101g/cm3) = 6.62E-07 pCi/g per 1 pCi/m2 The ROC-specific DCGLIR values are calculated using RESRAD-Onsite POM doses, 10CFR20.1402 dose criterion, and fill activity concentration, 6.62E-07 pCi/g per 1 pCi/m2. This was accomplished using equation 2.
DCGLIR,ROC = [25 ÷ (POMROC x Cfill)]
Eq. 2 Where:
DCGLIR,ROC = ROC-specific DCGLIR value (pCi/m2) 25 = 10CFR20.1402 unrestricted release criterion (mrem/y)
POMROC = ROC-specific POM dose (mrem/y per 1 pCi/g) calculated using RESRAD-Onsite 7.2 Cfill = 6.62E-07 pCi/g per pCi/m2 Table 3: RESRAD-Onsite Generated POM Doses and DCGLIR Values by ROC ROC POM dose (mrem/y)
DCGLIR (pCi/m2)
Am-241 6.45E+00 5.85E+06 C-14 1.99E-01 1.90E+08 Cm-243 2.06E+00 1.83E+07 Cm-244 1.65E+00 2.29E+07 Co-60 3.19E-01 1.18E+08 Cs-137 1.49E-01 2.53E+08 Eu-152 4.68E-02 8.08E+08 Eu-154 6.80E-02 5.55E+08 Fe-55 7.97E-04 4.74E+10 H-3 4.36E-02 8.67E+08 Mn-54 5.46E-03 6.91E+09 Nb-94 3.11E-02 1.21E+09 Ni-63 9.69E-03 3.90E+09 Np-237 3.44E+02 1.10E+05 Pu-238 9.82E+00 3.85E+06 Pu-239 1.09E+01 3.45E+06 Pu-240 1.09E+01 3.45E+06 Pu-241 2.10E-01 1.80E+08 Sb-125 2.24E-01 1.69E+08 Sr-90 9.95E+00 3.80E+06 Tc-99 1.02E+00 3.71E+07
RSCS TSD 25-105 Revision 0 Page 16 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values 2.2 Drilling Spoils Scenario description and assumptions are provided in TSD 24-063.
The volume of the drilling spoils was calculated using equation 3:
Vds = r2h Eq. 3 where Vds = the volume of drilling spoils (m3)
= pi constant r = radius of borehole (m) h = drilling depth (m)
Input for volume and area calculations:
The diameter of the bore hole = 8 inches (0.2032m).
Radius of bore hole = 4 inches (0.1016m)
Height of ORB wall = 14.4 ft (4.39m)
Cover thickness = 3 ft (0.91m)
Concrete depth to refusal = 1 inch (0.0254m)
Density of fill material = 1.5105 g/cm3 (assumed sand; mean density value for sand distribution)
Thickness of CZ at the surface = 6 inches (0.1524m)
The area of the drilling spoils at the ground surface (Ads) was calculated by dividing the volume of the drilling spoils by the assumed thickness of the spoils after spreading:
Ads = Vds/Tds Eq. 4 where Vds = the volume of drilling spoils (m3)
Tds = assumed thickness of the drilling spoils at the ground surface (m)
Assuming a drill column depth = 5.33m as the h term, the volume (Vds) and area (Ads) of the drilling spoils are:
Vds = r2h = (3.1415927)(0.2032m/2)2(5.33m) = 0.1728m3 Ads = (0.1728m3)/(0.1524m) = 1.134 m2 The area concentration activity of contamination on the concrete, Cc (pCi/m2), required to produce a concentration in the drilling spoils equal to 1 pCi/g was determined using the following equation:
Cc = ((Vds)(1x106)(Df)(Cds))/ r2 Eq. 5 Where
RSCS TSD 25-105 Revision 0 Page 17 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Cc = area concentration activity of contamination on the concrete required to produce a concentration in the drilling spoils equal to 1 pCi/g Vds = the volume of drilling spoils (m3) 1x106 = conversion for cm3/m3 Df = density of fill material (g/cm3), assumed sand as above Cds = unit concentration in drilling spoils (1 pCi/g)
= pi constant r = radius of borehole (m)
Using equation 5, the area concentration activity of contamination on the concrete, Cc (pCi/m2), required to produce a concentration in the drilling spoils equal to 1 pCi/g:
Cc = ((Vds)(1x106)(Df)(Cds))/ r2
= ((0.1728m3)(1x106 cm3/m3)(1.5105 g/cm3)(1 pCi/g))/((3.1415297)(0.1016 m)2)
= 8.05x106 pCi/m2 per 1 pCi/g The drilling spoils ROC-specific DCGL values (DCGLds,ROC) were calculated as follows:
DCGLds,ROC = (25)(Cc)(AFdsA)/POMROC Eq. 6 where 25 = 10CFR20.1402 radiological criterion for unrestricted release (mrem/y)
Cc = area concentration activity of contamination on the concrete required to produce a concentration in the drilling spoils equal to 1 pCi/g, 8.05x106 pCi/m2 AFdsA = the area factor applicable to Ads (unitless) taken from Table 4 in ENG-OCS-009.
POMROC = the peak of the mean dose (mrem/y per pCi/g) taken from TSD 25-103 [7].
Table 4: POM Doses, Area Factors, and DCGLds Values by ROC ROC POM Dose (mrem/y per pCi/g)
AF1m DCGLDS (pCi/m2)
Am-241 3.42E-02 12 7.06E+10 C-14 1.23E-02 585 9.56E+12 Cm-243 1.38E-01 9
1.31E+10 Cm-244 1.37E-02 16 2.35E+11 Co-60 3.15E+00 9
5.75E+08 Cs-137 6.99E-01 9
2.59E+09 Eu-152 1.42E+00 9
1.28E+09 Eu-154 1.53E+00 9
1.18E+09 Fe-55 2.98E-06 278 1.88E+16 H-3 7.94E-03 45 1.14E+12 Mn-54 7.34E-01 9
2.47E+09
RSCS TSD 25-105 Revision 0 Page 18 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values ROC POM Dose (mrem/y per pCi/g)
AF1m DCGLDS (pCi/m2)
Nb-94 2.01E+00 9
9.02E+08 Ni-63 4.56E-06 176 7.77E+15 Np-237 6.08E+00 9
2.98E+08 Pu-238 2.20E-02 16 1.46E+11 Pu-239 1.40E-01 21 3.02E+10 Pu-240 1.16E-01 21 3.64E+10 Pu-241 1.00E-03 24 4.82E+12 Sb-125 4.50E-01 9
4.03E+09 Sr-90 1.13E-02 11 1.97E+11 Tc-99 3.98E-01 27 1.37E+10 2.3 Excavated Concrete Scenario description and assumptions are provided in TSD 24-063.
The volume of excavated concrete is calculated using the following equation:
Vec = (4-wall total length)(average depth to groundwater-3ft)(wall thickness)
Eq. 7 The Turbine Building (TB) was selected as the most conservative input for the CZ area calculation (TSD 24-063).
Turbine Building:
4-wall total length = 893 ft Wall thickness = 3.0 ft Wall height = (14.5 ft - 3 ft) = 11.5 ft Vec = (893ft)(3.0ft)(11.5ft) = 30,811 ft3 (value rounded) = 872 m3(value rounded)
The area of the CZ with a thickness of 1 m was calculated using the following equation:
Acz = Vec/Tcz Eq. 8 Where Acz = the area of the CZ (m2)
Vec = the volume of excavated concrete (m3)
Tcz = assumed thickness of the CZ (1m)
Area of the CZ using the TB value for Vec : Acz = Vec/h = 872 m3/1m = 872 m2 The concentration activity in the excavated concrete (pCi/g) resulting from area contamination on the concrete equal to 1 pCi/m2 was determined using the following equation:
Cec = (Ac)/((tw)(30.48)(WUA)(1x104)(Dc))
Eq. 9
RSCS TSD 25-105 Revision 0 Page 19 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Where Cec = unit concentration in the excavated concrete (pCi/g per 1 pCi/m2)
Ac = unit activity over 1 m2 of concrete surface (1 pCi) tw = wall thickness (ft) 30.48 = conversion for cm/ft WUA = unit area of concrete wall (1 m2) 1x104 = conversion for cm2/m2 Dc = assumed density of concrete, 2.3 g/cm2, which is the mid-point of the density range in the 1970 edition of the Radiological Health Handbook The calculated value for Cec is:
Cec = (Ac)/((tw)(30.48)(WUA)(1x104)(Dc))
= (1 pCi)/((3ft)(30.48)(1m2)(1x104)(2.3 g/cm3))
= 4.75x10-7 pCi/g per 1 pCi/m2 The excavated concrete ROC-specific DCGL values are calculated using Equation 10:
DCGLec,ROC = (DCGLsoil,ROC)(AFcz,ROC)/Cec Eq. 10 Where DCGLec,ROC = ROC-specific DCGLec (pCi/m2)
DCGLsoil,ROC = ROC-specific DCGL (pCi/g) (from TSD 25-103)
AFcz,ROC = the ROC-specific area factor applicable to Acz (unitless) (from ENG-OCS-009)
Cec = unit concentration in the excavated concrete (pCi/g per 1 pCi/m2)
The AF for a CZ area = 872 m2 falls between values listed for CZ areas equal to 500 m2 to 1000 m2 (Table 4 in ENG-OCS-009). Except for C-14 and Tc-99, the AF value = 1 for all other ROCs for a 1000 m2 CZ area.
Rather than applying interpolated AF values, an AF value of 1 was applied to all ROCs to increase conservatism in the DCGLEC values. The application of an AF = 1 allows re-writing equation 10:
DCGLec,ROC = (DCGLsoil,ROC)/Cec Values for DCGLsoil,ROC in Table 4 were taken from TSD 25-103.
RSCS TSD 25-105 Revision 0 Page 20 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 5: DCGLEC Values by ROC ROC DCGLsoil (pCi/g)
DCGLec (pCi/m2)
Am-241 7.30E+02 1.54E+09 C-14 2.03E+03 4.27E+09 Cm-243 1.81E+02 3.81E+08 Cm-244 1.82E+03 3.83E+09 Co-60 7.94E+00 1.67E+07 Cs-137 3.58E+01 7.53E+07 Eu-152 1.76E+01 3.70E+07 Eu-154 1.63E+01 3.43E+07 Fe-55 8.39E+06 1.76E+13 H-3 3.15E+03 6.62E+09 Mn-54 3.41E+01 7.17E+07 Nb-94 1.25E+01 2.63E+07 Ni-63 5.48E+06 1.15E+13 Np-237 4.11E+00 8.64E+06 Pu-238 1.14E+03 2.40E+09 Pu-239 1.79E+02 3.76E+08 Pu-240 2.16E+02 4.54E+08 Pu-241 2.49E+04 5.24E+10 Sb-125 5.56E+01 1.17E+08 Sr-90 2.22E+03 4.67E+09 Tc-99 6.29E+01 1.32E+08
RSCS TSD 25-105 Revision 0 Page 21 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values 2.4 Calculation of DCGLW/F Values DCGLW/F values in column 5 of Table 6 were calculated using the following equation:
DCGLW/F = 1/((1/DCGLIR)+(1/DCGLDS)+(1/DCGLEC))
Eq. 11 Table 6: DCGLW/F Values by ROC ROC DCGLIR (pCi/m2)
DCGLDS (pCi/m2)
DCGLEC (pCi/m2)
DCGLW/F (pCi/m2)
Am-241 5.85E+06 7.06E+10 1.54E+09 5.83E+06 C-14 1.90E+08 9.56E+12 4.27E+09 1.82E+08 Cm-243 1.83E+07 1.31E+10 3.81E+08 1.74E+07 Cm-244 2.29E+07 2.35E+11 3.83E+09 2.27E+07 Co-60 1.18E+08 5.75E+08 1.67E+07 1.43E+07 Cs-137 2.53E+08 2.59E+09 7.53E+07 5.68E+07 Eu-152 8.08E+08 1.28E+09 3.70E+07 3.44E+07 Eu-154 5.55E+08 1.18E+09 3.43E+07 3.14E+07 Fe-55 4.74E+10 1.88E+16 1.76E+13 4.72E+10 H-3 8.67E+08 1.14E+12 6.62E+09 7.66E+08 Mn-54 6.91E+09 2.47E+09 7.17E+07 6.90E+07 Nb-94 1.21E+09 9.02E+08 2.63E+07 2.50E+07 Ni-63 3.90E+09 7.77E+15 1.15E+13 3.89E+09 Np-237 1.10E+05 2.98E+08 8.64E+06 1.08E+05 Pu-238 3.85E+06 1.46E+11 2.40E+09 3.84E+06 Pu-239 3.45E+06 3.02E+10 3.76E+08 3.42E+06 Pu-240 3.45E+06 3.64E+10 4.54E+08 3.43E+06 Pu-241 1.80E+08 4.82E+12 5.24E+10 1.79E+08 Sb-125 1.69E+08 4.03E+09 1.17E+08 6.79E+07 Sr-90 3.80E+06 1.97E+11 4.67E+09 3.79E+06 Tc-99 3.71E+07 1.37E+10 1.32E+08 2.89E+07 An open DW pathway lowers the DCGLW/F values for all ROCs as shown in Table 7.
RSCS TSD 25-105 Revision 0 Page 22 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Table 7. DCGLW/F Values Without and With an Open DW Pathway ROC IU DCGLW/F Value (pCi/g)
Without DW Pathway With DW Pathway Am-241 1.42E+09 5.83E+06 C-14 6.22E+08 1.82E+08 Cm-243 3.69E+08 1.74E+07 Cm-244 3.63E+09 2.27E+07 Co-60 1.62E+07 1.43E+07 Cs-137 7.31E+07 5.67E+07 Eu-152 3.60E+07 3.45E+07 Eu-154 3.33E+07 3.15E+07 Fe-55 1.64E+13 4.72E+10 H-3 1.05E+11 7.66E+08 Mn-54 6.97E+07 6.90E+07 Nb-94 2.49E+07 2.49E+07 Ni-63 1.54E+13 3.89E+09 Np-237 1.15E+08 1.08E+05 Pu-238 2.09E+08 3.84E+06 Pu-239 1.54E+08 3.42E+06 Pu-240 1.52E+08 3.43E+06 Pu-241 9.45E+09 1.79E+08 Sb-125 1.14E+08 6.78E+07 Sr-90 8.62E+09 3.79E+06 Tc-99 2.82E+10 2.89E+07
RSCS TSD 25-105 Revision 0 Page 23 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values 3 References
- 1. TSD 24-063, Basement Fill Model: Calculation of DCGLW/F Values Assuming Industrial Use Exposure Pathways
- 2. ANL/EVS/TM-18/1, RESRAD-Onsite 7.2 Users Guide, April 2018
- 3. TSD 25-032, Radionuclides of Concern in Support of the Oyster Creek Station License Termination Plan, Revision 0
- 4. TSD 24-055, Basement Fill Model: Probabilistic Analysis for the Instantaneous Release Scenario Assuming Industrial Use Exposure Pathways.
- 5. ENG-OCS-009, Area Factors for Soil - Industrial Use Scenario
- 6. 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
- 7. TSD 25-103, Industrial Use Scenario with Open Drinking Water Pathway: An Assessment of Impact on DCGL Values for Surface Soil, Sept. 26, 2025
RSCS TSD 25-105 Revision 0 Page 24 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Pages from the RESRAD-Onsite reports showing the POM dose values for the Instantaneous Release Scenario by radionuclide:
Am-241 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 18:03 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Am241 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\AM241\\BFM-IU_AM241_DCGL DW.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 6.453E+00 C-14 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 12:45 Page 20 Probabilistic results summary : OCS BFM_IU_IR_C14_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\C14\\BFM-IU_C14_DCGL DW.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 1.987E-01 CM-243 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 13:45 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Cm243_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\CM243\\BFM-IU_CM243_DCGL DW.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 2.064E+00 Cm-244 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 20:35 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Cm244_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\CM244\\BFM-IU_IR_CM244_DCGL DW.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 1.650E+00 Co-60 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 11:06 Page 20 Probabilistic results summary : OCS BFM_Industrial Use_IR_Co60_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\CO60\\BFM-IU_CO60_DCGL_DW.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 3.194E-01 Cs-137 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 12:57 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Cs137_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\CS137\\BFM-IU_CS137_DCGL DW.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 1.491E-01 Eu-152 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 11:33 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Eu152_DCGL_DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\EU152\\BFM-IU_EU152_DCGL DW.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 4.675E-02
RSCS TSD 25-105 Revision 0 Page 25 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Eu-154 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 13:10 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Eu154_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\EU154\\BFM-IU_EU154_DCGL DW.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 6.798E-02 Fe-55 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 16:54 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Fe55_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\FE55\\BFM-IU_FE55_DCGL DW.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 7.974E-04 H-3 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 07:03 Page 20 Probabilistic results summary : OCS BFM_IU_IR_H3_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\H3\\BFM-IU_IR_H3_DCGL DW.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 4.358E-02 Mn-54 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 10:13 Page 20 Probabilistic results summary : OCS BFM_IU_IR_Mn54_DCGL DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\MN54\\BFM-IU_IR_MN54_DCG DWL.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 5.464E-03 Nb-94 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 10:21 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Nb94 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\NB94\\BFM-IU_IR_DCGL_NB94 DW.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+03 3.114E-02 Ni-63 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 10:28 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Ni63 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\NI63\\BFM-IU_IT_NI63_DCGL DW.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 9.693E-03 Np-237 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 13:25 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Np237 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\NP237\\BFM-IU_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 0.000E+00 3.443E+02
RSCS TSD 25-105 Revision 0 Page 26 Industrial Use Scenario with Open Drinking Water Pathway:
An Assessment of Impact on BFM DCGLW/F Values Pu-238 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 07:08 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Pu238 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\PU238\\BFM-IU_IR_PU238_DCGL DW.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 9.818E+00 Pu-239 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 12:05 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Pu239 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\PU239\\BFM-IUIR__DCGL_PU239 DW.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+00 1.094E+01 Pu-240 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 13:14 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Pu240 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\PU240\\BFM-IU_IR_DCGL_PU240 DW.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+00 1.094E+01 Pu-241 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/19/2025 17:21 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Pu241 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\PU241\\BFM-IU_DCGL_PU241 DW.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+00 2.103E-01 Sb-125 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 10:36 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Sb125 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\SB125\\BFM-IU_IR_DCGLSB125 DW.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 2.240E-01 Sr-90 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 10:53 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Sr90 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\SR90\\BFM-IU_IR_DCGL_SR90 DW.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 9.948E+00 Tc-99 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 02/20/2025 11:00 Page 20 Probabilistic results summary : OCS BFM_IU_IR_DCGL_Tc99 DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\BFM IR IU DW\\TC99\\BFM-IU_IR_TC99_DCGL DW.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 1.017E+00