ML040280031
| ML040280031 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 01/19/2004 |
| From: | Balineau G, Harrington C, Keefer E, Littlefield P Yankee Atomic Electric Co |
| To: | NRC/FSME |
| References | |
| -RFPFR YA-CALC-00-005-03 | |
| Download: ML040280031 (17) | |
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CALCULATION TITLE PAGE Building Surface Area Factors Title YA-CALC-OO-005-03 Calculation Number Executive Summary NUREGs-1727 and 1757 discuss the scaling up of the DCGL, through the use of area factors to obtain a DCGL that will represent the same dose from residual contamination contained in a smaller area of the survey unit. The resultant, scaled up value, is referred to as the DCGL or elevated measurement comparison DCGL. The building occupancy scenario and RESRAD-BUILD v321 were used to calculate the annual dose from 1pCilm2 for various size sources starting with a base case area of 19.7m 2 and decreasing to 1m2. DCGLWl values corresponding to the base case area are calculated and Area Factors to be used in conjunction with the DCGLwI have been determined.
Approvals (Print & Sign Name)
Preparer. Cynthia Harrington A-- - , caky Date: l t'3 Preparer Estella Keefer ( b Date:
Reviewer. Peter Uttlefield Date:
Approver (Cognizant Manager): I nV 1 )s Date: Liq "A
1 Y DCM FORM 1.5-1A Page 1
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CALCULATION TITLE PAGE Building Surface Area Factors Title YA-CALC-00-005-03 Calculation Number Executive Summary NUREGs-1727 and 1757 discuss the scaling up of the DCGL, through the use of area factors to obtain a DCGL that will represent the same dose from residual contamination contained in a smaller area of the survey unit. The resultant, scaled up value, is referred to as the DCGLmc or elevated measurement comparison DCGL. The building occupancy scenario and RESRAD-BUILD v3.21 were used to calculate the annual dose from 1pCi/M 2 for various size sources starting with a base case area of 19.7m 2 and decreasing to 1m2. DCGL values corresponding to the base case area are calculated and Area Factors to be used in conjunction with the DCGLI have been determined.
Approvals (Print & Sign Name)
Preparer Cynthia Harrington Date:
Preparer Estella Keefer m
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Date: /$,
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/ v_t Reviewer. Peter Littlefield Date:
Approver (Cognizant Manager): Date:
DCM FORM 1.5-1A Page 1 fk tf orl
CALCULATION TITLE PAGE Building Surface Area Factors Title YA-CALC-O-005-03 Calculation Number Executive Summary NUREGs-1727 and 1757 discuss the scaling up of the DCGLW through the use of area factors to obtain a DCGL that will represent the same dose from residual contamination contained in a smaller area of the survey unit The resultant, scaled up value, is referred to as the DCGLO,,w or elevated measurement comparison DCGL. The building occupancy scenario and RESRAD-BUILD v3.21 were used to calculate the annual dose from lpCi/m2 for various size sources starting with a base case area of 19.7m2 and decreasing to 1m2. DCGLw, values corresponding to the base case area are calculated and Area Factors to be used in conjunction with the DCGLI have been determined.
Approvals (Print & Sign Name)
Preparer Cynthia Harrington Date:
Preparer. Estella Keefer Date:
Reviewer Peter Littlefield Date: 1/.1/F2 Approver (Cognizant Manager): Date:
DCM FORM 1.5-1A Page 1 (1 4 5of 5
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Page 2 of 10 TABLE OF CONTENTS Page PURPOSE...........................................................................................................................................................3
SUMMARY
OF RESULTS ..................................................... 3 REFERENCES....................................................................................................................................................6 ASSUMPTIONS..................................................................................................................................................7 METHOD / BODY OF CALCULATION ..................................................... 7 TABLES Page Table 1- Building Occupancy Scenario - Room and Floor Area DCGL Values and Building Surface Area Factor by Nuclide .................................................................... 4 Table 2 - Total Annual Dose from 1pCi/M 2 Source of Various Size .....................................
Table 3 - Dose for Various Area Sources Relative to Entire Floor Area .............................. 8 FIGURES Pane Figure 1. Area Factor for Varying Source Area - most restrictive nuclides......................... 5 Figure 2. Area Factor by Nuclide and Varying Source Area............................................. 9 Figure 3. Relative Dose for Various Area Source Sizes................................................... 10 ATTACHMENTS No. of Paaes Attachment 1- RESRAD-BUILD v3.21 Input Parameters to Area Factor Runs Using the Building Occupancy Scenario ..................................................... 5
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-O0-005-03 Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005 03
Subject:
Building Surfaces Area Factors Page 3 of 10 PURPOSE YA-CALC-00-004-03 (Ref 1), describes the process for determining DCGL, values for the building occupancy scenario using the RESRAD-BUILD v3.21 computer code. That calculation assumed the uniform contamination of the entire floor and four walls. The purpose of this calculation is to determine new nuclide specific DCGL values, designated as DCGLw1, for a source area smaller than the entire room area. This calculation also determines Area Factors to be applied to this DCGLW1 to obtain acceptable concentration guidelines levels for increasingly smaller areas of building surface contamination. The use of the DCGLWl and Area Factors determined here will result in a dose to a building occupant that will not exceed the regulatory limit of 25 mrem/yr.
SUMMARY
OF RESULTS The RESRAD-BUILD v3.21computer code and the building occupancy scenario used in Reference 1 were used in this calculation to determine the annual dose from 1pCi/m2 for various size sources. One modification of the input assumptions occurred in that only a specified area of the floor is considered to be contaminated. The size of this area is varied from the entire floor (19.7 m2 ) to an area as small as I M2. The entire floor being contaminated is considered the base case and a new derived concentration guideline is defined for this case. This new DCGL will be designated DCGLwl to differentiate it from the DCGLw determined in Reference 1 for the entire room.
The DCGLW1 values for each radionuclide previously determined to be important for decommissioning (Ref 1) are presented in Table 1. These are derived from the doses presented in Table 2 for the 19.7 M2 area by dividing 25mrem/yr by the annual dose for I pCi/m2. Table 1 also provides the DCGLw values determined by Ref 1 for comparison.
The Area Factors in Table 1 are applicable for use with contaminated areas smaller than the 19.7 M2 floor area. These have been determined from the data in Table 3 by taking the inverse of the relative dose values for each radionuclide. The DCGLWl values should be multiplied by these Area Factors to determine the appropriate contamination limit for the smaller area. The result is appropriate to use for either contaminated floor or wall areas.
Figure 1 presents the Area Factors in graphical format. The upper curve represents the non-gamma emitters and the lower curve represents the gamma emitters (as shown in Figure 3).
The most conservative radionuclide (C-14 and Eu-152) was chosen to represent each group.
The curves may be used to determine the Area Factor for an area not presented in Table 1. For areas less than 1 M2 , the 1 m2 Area Factor should be used. Conversely, for areas larger than 20 M2, the DGCL, should be used.
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Page 4 of 10 Table 1-Building Occupancy Scenario - Room and Floor Area DCGL Values and Building Surface Area Factor by Nuclide Area of Source (m2 )
DCGL Ci/m 2 Area Factor for Source Areas less than 19.7m2 DCGLw DCGLw1 based on based on Nuclide 82. m2 19.7 m2 19.7 15 12 10 8 6 4 2 1 H-3 1.52E+10 6.35E+10 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.9 19.7 C-14 4.64E+08 1.92E+09 1.0 1.3 1.6 2.0 2.4 3.3 4.9 9.7 19.4 Fe-55 1.81E+09 7.55E+09 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.9 19.7 Co-60 8.14E+05 1.92E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.1 7.3 Ni-63 1.68E+09 6.98E+09 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.9 19.7 Sr-90 6.28E+06 2.57E+07 1.0 1.3 1.6 1.9 2.4 3.2 4.8 9.4 18.6 Nb-94 1.17E+06 2.75E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.0 7.2 Tc-99 6.48E+08 2.64E+09 1.0 1.3 1.6 1.9 2.4 3.2 4.7 9.2 18.2 Ag-108m 1.13E+06 2.64E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.0 7.2 Sb-125 4.54E+06 1.07E+07 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.1 7.2 Cs-134 1.29E+06 3.14E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.5 4.2 7.4 Cs-137 2.83E+06 7.08E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.5 4.2 7.6 Eu-152 1.66E+06 3.89E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.0 7.2 Eu-154 1.55E+06 3.67E+06 1.0 1.1 1.3 1.4 1.6 1.9 2.4 4.0 7.2 Eu-155 2.94E+07 7.12E+07 1.0 1.1 1.3 1.4 1.6 1.9 2.5 4.1 7.4 Pu-238 2.57E+05 1.07E+06 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.9 19.7 Pu-239 2.31 E+05 9.65E+05 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.8 19.8 Pu-241 1.1 E+07 4.59E+07 1.0 1.3 1.6 2.0 2.5 3.3 4.9 9.8 19.5 Am-241 2.25E+05 9.29E+05 1.0 1.3 1.6 2.0 2.4 3.3 4.9 9.7 19.5 Cm-243 3.23E+05 1.32E+06 1.0 1.3 1.6 1.9 2.4 3.2 4.7 9.3 18.5
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Page 5 of 10 Figure 1 - Area Factors for Variable Source Areas - Most Restrictive Nuclides 20.0 I I .I I :
I t
-y . f.;:.DSgD-iL - :I' I:,' 18.0
_ I I
I I 16.0
. . i . . . j I A Non-Gamma Emiters (Represented by C-14)
--- Gamma Emitters (Represented by Eu-152) j EL II
_ _ _ _ _~~.
I
[
14.0 b.cIII-O E
8.0 2.0 An
_.w 20 18 16 14 12 10 8 6 4 2 0 Source Area (m2l
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Page 6 of 10 REFERENCES
- 1. YA-CALC-00-004-03, RESRAD-BUILD v3.21 Building Surface Derived Concentration Guideline Levels," January 2004
- 2. NUREG-1 727. "NMSS Decommissioning Standard Review Plan," September 2000.
- 3. NUREG-1 757. "Consolidated NMSS Decommissioning Guidance," Volume 2: Characterization, Survey and Determination of Radiological Criteria," September 2003.
- 4. YA-CALC-00-003-03, RESRAD-BUILD v3.21 Sensitivity Analysis for Building Occupancy,"
November 2003
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC4OO-005-03
Subject:
Building Surfaces Area Factors Page 7 of 10 ASSUMPTIONS The comprehensive demolition and dismantling strategy defined for the YNPS site will result in structures remaining on site at the time of license termination. These structures will be parts of buildings and will generally consist of support walls, tank rooms and floor slabs. All existing ceilings will be replaced with new uncontaminated materials. The dimensions of an average room that might remain on site were determined by considering the demolition plans and the identification of walls/rooms to remain intact and are discussed in Ref. 1.
DCGLW values, based on the total surface area of the contaminated surfaces in the room (82m 2), are presented in Ref. 1. The approach to calculating area factors for the design and implementation of surveys of building surfaces is to modify the base case DCGL to reflect the largest likely survey area as the largest room surface area of 19.7m 2 (room floor area).
NUREGs-1727 and 1757 discuss the scaling up of the DCGLw through the use of area factors to obtain a DCGL that will represent the same dose from residual contamination contained in a smaller area of the survey unit. The resultant, scaled up value, is referred to as the DCGLemc or elevated measurement comparison DCGL.
A new DCGL is defined for the purpose of this calculation which represents the contamination level for the entire 19.7 m2 floor area that would result in a dose of 25 mrem/yr to the building occupant. This guideline level is designated DCGL, 1 to differentiate it from the guideline level for the entire room (DCGLw).
DCGLemc Area Factor = DCGL Equation 1 DCGLw METHOD I BODY OF CALCULATION The nuclide specific total dose for contaminated areas equal to and less than 19.7m 2 were calculated using RESRAD-BUILD V 3.21 as discussed in Ref. 1 and Ref. 4. The model is the same as that used to calculate the DCGLw based on the total room area contamination, with the exception that only one contaminated source is modeled (floor) versus the five sources considered in the determination of DCGLW in Reference 1.
The receptor and source locations remain in the center of the room. The area of the source is varied from 19.7m 2 to 1m2 . The dose for each size source is normalized to the dose at 19.7m 2 .
Table 2 presents the dose in mrem/yr for a 1 pCi/M 2 source of a specified area. Table 3 presents the same information for each area as a relative dose (relative to the dose for the 19.7m 2 floor area). The area factors shown in Table 1 are the reciprocal of the relative dose.
Figures 2 and 3 show the relative dose and the area factors for all nuclides as a function of source area.
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-0005-03
Subject:
Building Surfaces Area Factors Page 8 of 10 Table 2 - Total Annual Dose from 1 pCi/r 2 Source of Various Sizes Area of Source (m2 _
Nuclide 19.7 15 12 10 8 6 4 2 1 H-3 3.94E-10 3.OOE-10 2.40E-10 2.OOE-10 1.60E-1 0 1.20E-1 0 8.OOE-1 I 4.OOE-1 I 2.OOE-1 1 C-14 1.30E-08 9.91 E-09 7.94E-09 6.63E-09 5.31 E-09 3.99E-09 2.67E-09 1.34E-09 6.71E-10 Fe-55 3.31 E-09 2.52E-09 2.01 E-09 1.68E-09 1.34E-09 1.01 E-09 6.71 E-10 3.36E-10 1.68E-10 Co-60 1.30E-05 1.14E-05 1.03E-05 9.32E-06 8.24E-06 6.95E-06 5.34E-06 3.20E-06 1.79E-06 Ni-63 3.58E-09 2.72E-09 2.18E-09 1.82E-09 1.45E-09 1.09E-09 7.27E-10 3.63E-10 1.82E-10 Sr-90 9.71 E-07 7.43E-07 5.97E-07 4.99E-07 4.02E-07 3.03E-07 2.04E-07 1.03E-07 5.21 E-08 Nb-94 9.09E-06 8.02E-06 7.19E-06 6.54E-06 5.79E-06 4.88E-06 3.75E-06 2.25E-06 1.26E-06 Tc-99 9.47E-09 7.26E-09 5.85E-09 4.90E-09 3.95E-09 2.99E-09 2.02E-09 1.03E-09 5.20E-10 Ag-108m 9.46E-06 8.35E-06 7.49E-06 6.81 E-06 6.02E-06 5.08E-06 3.91 E06 2.34E-06 1.31 E-06 Sb-125 2.34E-06 2.06E-06 1.85E-06 1.68E-06 1.49E-06 1.25E-06 9.62E-07 5.77E-07 3.23E-07 Cs-134 7.97E-06 7.OOE-06 6.25E-06 5.67E-06 5.00E-06 4.20E-06 3.22E-06 1.92E-06 1.08E-06 Cs-137 3.53E-06 3.08E-06 2.74E-06 2.48E-06 2.18E-06 1.83E-06 1.40E-06 8.31 E-07 4.64E-07 Eu-152 6.43E-06 5.68E-06 5.09E-06 4.63E-06 4.09E-06 3.45E-06 2.65E-06 1.59E-06 8.92E-07 Eu-154 6.82E-06 6.02E-06 5.39E-06 4.91 E-06 4.34E-06 3.66E-06 2.81 E-06 1.69E-06 9.45E-07 Eu-1 55 3.51 E-07 3.08E-07 2.75E-07 2.49E-07 2.20E-07 1.85E-07 1.42E-07 8.46E-08 4.73E-08 Pu-238 2.34E-05 1.78E-05 1.42E-05 1.19E-05 9.48E-06 7.11 E-06 4.74E-06 2.37E-06 1.19E-06 Pu-239 2.59E-05 1.97E-05 1.58E-05 1.31 E-05 1.05E-05 7.88E-06 5.26E-06 2.63E-06 1.31 E-06 Pu-241 5.45E-07 4.15E-07 3.32E-07 2.77E-07 2.22E-07 1.67E-07 1.11 E-07 5.57E-08 2.79E-08 Am-241 2.69E-05 2.05E-05 1.64E-05 1.37E-05 1.1OE-05 8.23E-06 5.50E-06 2.76E-06 1.38E-06 Cm-243 1.89E-05 1.45E-05 1.16E-05 9.75E-06 7.84E-06 5.93E-06 3.99E-06 2.03E-06 1.02E-06 Table 3 - Dose for Various Area Sources Relative to Entire Floor Area Nuclide 19.7 15 12 10 8 6 4 2 1 H-3 1.00 0.76 0.61 0.51 0.41 0.30 0.20 0.10 0.05 C-14 1.00 0.76 0.61 0.51 0.41 0.31 0.21 0.10 0.05 Fe-55 1.00 0.76 0.61 0.51 0.40 0.31 0.20 0.10 0.05 Co-60 1.00 0.88 0.79 0.72 0.63 0.53 0.41 0.25 0.14 Ni-63 1.00 0.76 0.61 0.51 0.41 0.30 0.20 0.10 0.05 Sr-90 1.00 0.77 0.61 0.51 0.41 0.31 0.21 0.11 0.05 Nb-94 1.00 0.88 0.79 0.72 0.64 0.54 0.41 0.25 0.14 Tc-99 1.00 0.77 0.62 0.52 0.42 0.32 0.21 0.11 0.05 Ag-108m 1.00 0.88 0.79 0.72 0.64 0.54 0.41 0.25 0.14 Sb-125 1.00 0.88 0.79 0.72 0.64 0.53 0.41 0.25 0.14 Cs-134 1.00 0.88 0.78 0.71 0.63 0.53 0.40 0.24 0.14 Cs-137 1.00 0.87 0.78 0.70 0.62 0.52 0.40 0.24 0.13 Eu-152 1.00 0.88 0.79 0.72 0.64 0.54 0.41 0.25 0.14 Eu-154 1.00 0.88 0.79 0.72 0.64 0.54 0.41 0.25 0.14 Eu-155 1.00 0.88 0.78 0.71 0.63 0.53 0.40 0.24 0.13 Pu-238 1.00 0.76 0.61 0.51 0.41 0.30 0.20 0.10 0.05 Pu-239 1.00 0.76 0.61 0.51 0.41 0.30 0.20 0.10 0.05 Pu-241 1.00 0.76 0.61 0.51 0.41 0.31 0.20 0.10 0.05 Am-241 1.00 0.76 0.61 0.51 0.41 0.31 0.20 0.10 0.05 Cm-243 1.00 0.77 0.61 0.52 0.41 0.31 0.21 0.11 0.05
Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-0005-03
Subject:
Building Surfaces Area Factors Page 9 of 10 Figure 2- Relative Dose for Various Area Sizes
.. '~~I'l< ~IP 1t-i 1. I I
-Co-60 1.0 0.9
.~~7_ ._ ..
Jj.Ef..d0 +
-Nb-94
-- Ag-108m
- Sb-125
- 0.8
- Cs-134
__S
- Cs-137
- Eu-152 0.7
- Eu-154
- Eu-1 5 0.6
--- C-14
-~Fe-55 7=
V It1:INl-
- S- . v 1K i
- :S: *. -c O.
0.5 8
VA-Ni-63 . -iD; iC00 0DN . 0 f^'f ' 0 ^0'> r )-;>.,>t, ,' .; t
-- Sr-90 0.4 0:
-Tc-99 .. :' : ; : Z - WA a Pu-238
. . . . : t - fi. S Pu-239 0.3 Pu-241 > C :Sfi V !: N sW t a
-.Am-241 115
--a- Cm-243 II -, I,1- -t4 I I I- I I
- 7 I , l :' X K
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', t- ;L II -I
.I.
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Ii : ,I 0.1 0.0 20 18 16 14 12 10 8 6 4 2 0 2
Source Area (m)
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-05-03
Subject:
Building Surfaces Area Factors Page 10 of 10 Figure 3 - Area Factors by Nuclide and Varying Source Area 20.0 U
, I I I I I ,: :1I
, 1-,"o,'III I: I l.. -.
18.0
-ffi N-63 16.0 0Sr-90
- Tc-99 14.0
-- Pu-238 I
- Pu-239 12.0
-PL-241 E 0
I :. I I .
I ,. n;i:- , P 1: -Am-241 10.0 aI
, I III [
I : I -o-60
,iIII ' ' -, - Nb-94 J i E P . l - l ,. usm z j, ,-
I 8.0 F___ __
~ ~ -Sb-125
-Cs-134 I ,I AI I II ; 11 i -cs-137 6.0 i
-Eu-152 _ 1I__
-: e e , I I , II IO -Eu-154 I , I I II 4.0 II - If '
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v..0 20 18 16 14 12 10 8 6 4 . 2 0 Source Area ()
Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Attachment 1 Page:1 of 5 Attachment 1 RESRAD-BUILD v3.21 Input Parameters to Area Factor Runs Using the Building Occupancy Scenario
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC0005-03 l
Subject:
Building Surfaces Area Factors Attachment Page:2 of 5 Table 1-1 RESRAD-BUILD v3.21 Input Parameters for Area Factor Run using the Building Occupancy Scenario Parameter (unit) Typea Nuclideb Treatmentc Value/d Basis Distribution's Statistical Parameters Distribution 1 2 3 4 Median Exposure Duration (days) B All D 365.25 NUREG/CR-5512, Vol.3, 5.2.1 NR NR NR NR NR Indoor Fraction B All 0.267 NUREG/CR-5512, Vol. 3, 5.2.2 NR NR NR NR NR Evaluation Time (year) P All D 0 t=0 corresponds maximum NR NR NR NR NR dose over the first year (year 9 for Pu-241)
Number of Rooms P All D 1 NUREG/CR-5512 NR NR NR NR NR Deposition Velocity (m/sec) P H-3 D 1.51 E-05 25' percentile value NR NR - -
P Fe-55 D 1.51 E-05 25"' percentile value NR NR - -
Co-60 D 4.7E04 75' percentile value NR NR - -
P Sr-90 D 1.51E-05 25"' percentile value NR NR - - .
_ __ Nb-94 D 4.79E-04 75n percentile value NR NR
_P Ag-108m D 4.79E-04 75n' percentile value NR NR .
P Sb-125 D 4.79E-04 75" percentile value NR NR . . .
P Cs-1 34 D 4.79E-04 75 percentile value NR NR
__P Cs-1 37 D 4.79E-04 75"' percentile value NR NR P Eu-1 54 D 4.79E-04 75' percentile value NR NR . .
__P Pu-241 D 1.511E-05 25' percentile value NR NR
__P Cm-243 D 1.51 E-05 25"' percentile value NR NR
_P All others S Logunifom NUREG/CR-6755, 3.3 2.70E-06 2.70E-03 - 8.53E-05 Resuspension Rate (secl) P H-3 D 1.02E-06 Mean value NR NR .
P Fe-55 D 1.02E-06 Mean value NR NR p_ __ Co-60 D 6.75E-10 25" percentile value NR NR
_ _P Ni-63 D 1.02E-06 Mean value NR NR-
___P Sr-90 D 1.02E-06 Mean value NR NR
_P Nb-94 D 6.75E-10 25" percentile value NR NR . .
P Ag-108 D 6.75E-10 25"' percentile value NR NR -
_P Sb-125 D 6.75E-10 25' percentile value NR NR
_P Cs-134 D 6.75E-10 25'n percentile value NR NR .
__P Cs-137 D 6.75E-10 25"' percentile value NR NR
__P Eu-154 D 6.75E-10 25 percentile value NR NR
_P Pu-238 D 1.02E-06 Mean value NR NR
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALG-00-005-03
Subject:
Building Surfaces Area Factors Attachment 1 Page:3 f 5 Table 1-1 RESRAD-BUILD v3.21 Input Parameters for Area Factor Run using the Building Occupancy Scenario Parameter (unit) Type' Nucildeb Treatment' Value/d Basis Distributlon's Statistical Parameters Distribution I 2 3 4 Median P Pu-241 D 1.02E-06 Mean value NR NR
____________________ P Cm-243 D 1.02E-06 Mean value NR NR P All others S Loguniform NUREG/CR-6755, 3.1 2.5E-11 1.3E-5 1.83E-08 Air exchange rate for room (1/ h) B All D 1.52 NUREG/CR-6697, Att.C, 7.4 NR NR NR NR NR and NUREG/CR-6755, 3.2 2
Room area (m ) P All D 19.71 Site-specific model, Ref. 4 NR NR NR NR NR Room height (m) P All D 3.51 Site-specific model, Ref. 4 NR NR NR NR NR Time fraction B All D 1 NUREG/CR-5512 NR NR NR NR NR Breathing rate (m3/day) B All D 33.6 NUREG/CR-5512 Vol. 3 5.3 NR NR NR NR NR Indirect ingestion rate (m2lhr) B All D 0 NUREG/CR-5512 Vol. 3 5.2.3 NR NR NR NR NR Indirect ingestion is not modeled Receptor location: x,y,z (m) B All D 2.22, 2.22,1 NUREG/CR-5512 NR NR NR NR NR Shielding thickness (cm) P All D 0 Site-specific model- No NR NR NR NR NR Shielding assumed Shielding density (g/cc) P All D 0 Site-specific model - No NR NR NR NR NR
_____________________ shielding assumed Shielding material P All None Site-specific model - No NR NR NR NR NR shielding assumed Number of sources P All D 5 Site-specific model, Ref. 4 NR NR NR NR NR Extemal dose conversion factor M All D RESRAD-BUILD default FGR 12 NR NR NR NR NR
((mrem/yr)/(dpmlm 2 )) __ I Air submersion dose conversion M All D RESRAD-BUILD default FGR 12 NR NR NR NR NR factor ((mrem/yr)/(pCm 3))
Inhalation dose conversion factor M All D RESRAD-BUILD default FGR 11 NR NR NR NR NR (mrem/pCig) .
Ingestion dose conversion factor M All D RESRAD-BUILD default FGR 11 NR NR NR NR NR (mrem/pCig)
Source 1. Floor. _
Type P All D Area NUREG/CR-5512 NR NR NR NR NR Direction P All D Z NUREG/CR-5512 NR NR NR NR NR Location of center of source: x,y,z P All D 2.22, 2.22, 0 Site-specific model, Ref. 4 NR NR NR NR NR (m) III Area (m2) P All D 19.71,15, 12,10, Site-specific model, Ref. 4 NR NR NR NR NR I__________________
___8 ,6,4,2 ,1
Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Attachment I Page:4 of 5 Table 1-1 RESRAD-BUILD v3.21 Input Parameters for Area Factor Run using the Building Occupancy Scenario Parameter (unit) Typea Nucildeb Treatmentc Value/d Basis Distribution's Statistical Parameters Distribution 1 2 3 4 Median AirfractionforH-3 B All D NUREG/CR6697,Att. C, 8.6 NR- -- NR NL NR N Air fraction B All D 0.07 NUREGICR-6697, Att. C, 8.6 NR NR NR NR NR (for all nuclides except H-3)
Direct ingestion (hr-1) B All 0 1.34E-6 NUREG/CR-5512, Vol. 3, 5.2.3 NR NR NR NR NR 2
_____________ _1._IE-04m /h /82.03 m2 _
Removable fraction P All D 0.1 NUREG-1727 Table C 7.1 / NR NR NR NR NR NUREG/CR-6755, 3.5 _
Time for source removal (days) P H-3 D 18240 25" percentile value NR NR NR NR NR P C-14 D 52777 75_ percentile value NR NR NR NR NR P Fe-55 D 52777 75" percentile value NR NR NR NR NR ID Fo-60 D 52777 75" percentile value NR NR NR NR NR Ni-603 D 18240 25" percentile value NR NR NR NR NR Sr-90 18240 25t percentile value NR NR NR NR NR
_ Nb-94 D 52777 7 5 th percentile value NR NR NR NR NR P Tc-99 D 52777 75h percentile value NR NR NR NR NR Ag-i9 T D 52777 75" percentile value NR NR NR NR NR P Sb-125 D 52777 75h percentile value NR NR NR NR NR P Cs-134 D 52777 75" percentile value NR NR NR NR NR P Cs-1 37 52777 75h percentile value NR NR NR NR NR P Eu-152 D 52777 75" percentile value NR NR NR NR NR P Eu-15 D 52777 75" percentile value NR NR NR NR NR P Eu-155 0 18240 25' percentile value NR NR NR NR NR P Pu-238 D 18240 25" percentile value NR NR NR NR NR P Pu-239 0 18240 25" percentile value NR NR NR NR NR P Pu-24i D 18240 25" percentile value NR NR NR NR NR P An-241 D 18240 25" percentile value NR NR NR NR NR P Cm-243 D 18240 25" percentile value NR NR NR NR NR Radionuclide concentration (pCiM 2) P All D 1 Allows for proportional DCGL NR NR NR NR NR
_________________________________I_______
__________ ____ ___calculation
Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-005-03
Subject:
Building Surfaces Area Factors Attachment I Page:5 of 5 NOTES P = physical, B = behavioral, M = Metabolic (NUREG/CR-6697 Aft B. Table 4.3) b 1 = high priority parameter, 2 = medium priority parameter, 3 = low priority parameter (NUREG/CR-6697 Aft B, Table 4.3)
D= deterministic, S = stochastic (Figure 1) d Statistical Parameters Loguniform I = minimum, 2 = maximum NR - None Required Input Correlations used only if both distributions used as inputs:
Resuspension Rate and Deposition Velocity = 0.9 Run Specifications: Random Seed = 1000 Number of Observations = 300 Number of Repetitions = I Dose Integrations = 5