Baldwin TD and Hicks TW, Assessment Calculations for Human ...

More documents

Recommendations

Info

0977-6Version 1the activities and other vault-dependent parameters had been incorporated into theextended model correctly 1 .1 Note that the dose expressions represented in Version 1.2 of the model used to produce the resultspresented in this report and the data input process have not been modified since Version 1.1 wasproduced and this verification step has not been repeated for Version 1.2.Galson Sciences Ltd 12 21 March 2011
0977-6Version 15 Model ParametersThe specification of spatially variable parameters for the additional vaults andparameters for each human intrusion and occupancy event is presented in this section.5.1 Spatially Variable Parameters5.1.1 Radionuclide InventoryThe radionuclide inventories for predicted disposals to Vaults 15 to 20 have beenprovided in two spreadsheets (Case A: PIER V_2_3_a 19 11 10 ART AH.xls and CaseB: PIER V_2_3_b 19 11 10 ART AH.xls). These cases represent two differentinventory cases as described by Paulley (2011):• Case A considers wastes currently identified in WIDRAM 09 as destined forLLWR, “LLWR 2” or the planned geological disposal facility. This additionalinventory does not include waste streams currently anticipated to be disposedof at Dounreay or other identified sites, but could amount to an additionalpackaged waste volume of 573,000 m 3 . A large fraction of this additionalvolume is from Stage 3 reactor decommissioning.• Case B considers, in addition, the disposal of solid LLW associated with ‘newbuild’ construction, operation and decommissioning. The identified inventoryis speculative and probably a cautious overestimate, but acts as a baseline foranalyses, and suggests an additional packaged waste volume of 730,000 m 3 .The radionuclide activities for each inventory case have been mapped to the modelgrid cells as indicated in Figure 3.1, and in Table A.2 (Case A) and Table A.3 (CaseB). Note that package stacking heights vary across the vaults to take account of spaceprovided by the cap profiling (see below).For the human intrusion assessment, the radionuclide activities for a vault have beenassumed to represent activities at the time of completion of disposals to that vault (i.e.radioactive decay to this time has been ignored). The vault filling completion dates,from which time decay has been assumed to begin, are as shown for each case inTable 5.1.Galson Sciences Ltd 13 21 March 2011
Page 2 and 3: This page is left blank intentional
Page 5: 0977-6Version 1Assessment Calculati
Page 8 and 9: 0977-6Version 1Assessment calculati
Page 13 and 14: 0977-6Version 1allows for the appli
Page 15 and 16: 0977-6Version 1Table 2.1Exposure pa
Page 17 and 18: 0977-6Version 13 Treatment of Spati
Page 19 and 20: 0977-6Version 1Figure 3.1Grid (rows
Page 21: 0977-6Version 14 Model Verification
Page 25 and 26: 0977-6Version 1in the vaults after
Page 27 and 28: 0977-6Version 15.2 Intrusion Events
Page 29 and 30: 0977-6Version 1External irradiation
Page 31 and 32: 0977-6Version 1Table 6.1Mapping of
Page 33 and 34: 0977-6Version 10.000160.000140.0001
Page 35 and 36: 0977-6Version 10.000160.000140.0001
Page 37 and 38: 0977-6Version 10.0001Dose (mSv)0.00
Page 39 and 40: 0977-6Version 10.0000250.000020Dose
Page 41 and 42: 0977-6Version 10.00350.00300.0025Do
Page 43 and 44: 0977-6Version 16.1.5 B3b - Housing
Page 45 and 46: 0977-6Version 11Dose (mSv)0.10.01To
Page 47 and 48: 0977-6Version 16.05.0Dose (mSv)4.03
Page 49 and 50: 0977-6Version 16.1.7 C1 - Informal
Page 51 and 52: 0977-6Version 10.00140.00120.0010Do
Page 53 and 54: 0977-6Version 16.1.9 SummaryCalcula
Page 55 and 56: 0977-6Version 10.250.20Dose (mSv)0.
Page 57 and 58: 0977-6Version 17 ConclusionsAssessm
Page 59 and 60: 0977-6Version 1majority of the intr
Page 61 and 62: 0977-6Version 1Appendix A - Paramet
Page 63 and 64: 0977-6Version 1NuclideHalf-life(yrs
Page 65 and 66: 0977-6Version 1NuclideHalf-life(yrs
Page 67 and 68: 0977-6Version 1Cl36Cm24210 11 10 11
Page 69 and 70: 0977-6Version 1Pa231Pb21010 11 10 1
Page 71 and 72: 0977-6Version 1U238Zr9310 11 10 11A
Page 73 and 74:
0977-6Version 1Cl36Cm24210 11 10 11
Page 75 and 76:
0977-6Version 1Pa231Pb21010 11 10 1
Page 77 and 78:
0977-6Version 1U238Zr9310 11 10 11A
Page 79:
0977-6Version 1f inh Inhalable frac
show all

Baldwin TD and Hicks TW, Assessment Calculations for Human ...

Create successful ePaper yourself

Delete template?

Save as template?