Limer LMC, Assessment Calculations for C-14 Labelled Gas and ...

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Calculated Effective Ingestion DosesPotential impacts from ingestion are calculated for four different PEGs, as noted inSection 2.3. The PEGs may reside over any part of the trenches, RDA vaults or EDAvaults. It is considered there is an equal probability that they would establish theirgarden or smallholding in any part of that region. Thus, average fluxes associated withrelevant regions of the cap are used to calculated potential impacts. Figure 5-5 presentscalculated potential impacts at 100 year intervals following the completion of the finalcap.The effective annual ingestion dose target of 20 µSv is again indicated using a blackline. Consistent with the average flux data (Figure 5-4), for the trenches, the potentialexposures are lower than the guidance dose level within 100 years following thecompletion of the cap. However it is anticipated that it would take nearer 350 and 300years for the dose associated with the RDA and EDA vaults, respectively, to drop tosuch a level. The calculated annual doses are also presented in Table 5-1Error!Reference source not found.; calculated doses which exceed 20 µSv are shown in redfont.20
QRS-1443ZH-1, Version 3.0Table 5-1: Calculated Annual Effective Ingestion Doses for Equal Likelihood ofPlacing Garden or Smallholding Anywhere on Cap for the Reference Case (mSv)LocationTime (y)Flux of C-14 Calculated Effective Ingestion Exposure (mSv)Labelled Gas(Bq m -2 y -1 ) PEG A PEG B PEG C PEG DTrenchesRDAVaultsEDAVaults2230 1.41E+03 1.74E-02 1.47E-02 1.47E-02 9.50E-032330 5.94E+02 7.29E-03 6.16E-03 6.16E-03 3.99E-032430 4.45E+02 5.46E-03 4.62E-03 4.62E-03 2.99E-032530 3.18E+02 3.91E-03 3.30E-03 3.30E-03 2.14E-032630 2.57E+02 3.16E-03 2.67E-03 2.67E-03 1.73E-032230 9.83E+04 1.21E+00 1.02E+00 1.02E+00 6.60E-012330 1.01E+04 1.24E-01 1.05E-01 1.05E-01 6.79E-022430 2.32E+03 2.85E-02 2.41E-02 2.41E-02 1.56E-022530 6.80E+02 8.35E-03 7.06E-03 7.06E-03 4.57E-032630 3.80E+02 4.66E-03 3.94E-03 3.94E-03 2.55E-032230 5.01E+04 6.15E-01 5.20E-01 5.20E-01 3.37E-012330 2.77E+03 3.40E-02 2.87E-02 2.87E-02 1.86E-022430 1.19E+02 1.46E-03 1.23E-03 1.23E-03 7.97E-042530 4.55E+01 5.59E-04 4.72E-04 4.72E-04 3.06E-042630 3.94E+01 4.84E-04 4.09E-04 4.09E-04 2.65E-0421
Page 3: Les thèmes du portail Leçon 3Néa
Page 7: QRS-1443ZH-1, Version 3.0SummaryThe
Page 11 and 12: QRS-1443ZH-1, Version 3.01 Introduc
Page 13 and 14: QRS-1443ZH-1, Version 3.02 Summary
Page 15 and 16: QRS-1443ZH-1, Version 3.0case, it i
Page 17 and 18: QRS-1443ZH-1, Version 3.0consumed d
Page 19 and 20: QRS-1443ZH-1, Version 3.0relation t
Page 21 and 22: QRS-1443ZH-1, Version 3.0In the RDA
Page 24 and 25: Table 3-2: Rn-222 Inventory Informa
Page 26 and 27: Please see Table 5-1 of Limer et al
Page 28 and 29: contribute substantially to the tot
Page 32 and 33: (a)Annual Effective IngestionExposu
Page 34 and 35: calculated annual ingestion dose fo
Page 36 and 37: Figure 5-7: Average Decay Corrected
Page 38 and 39: Figure 5-9: Calculated Effective An
Page 40 and 41: Table 5-5: Calculated Annual Effect
Page 42 and 43: Table 5-7: Calculated Annual Effect
Page 44 and 45: Table 5-9: Calculated Effective Inh
Page 46 and 47: Table 5-11: Calculated Effective In
Page 48 and 49: throughout. The reference case is h
Page 50 and 51: EDAVaults_NoCap@10000y and Vaults15
Page 52 and 53: area of the cap over vault 8 were t
Page 54: the Nuclear Decommissioning Authori

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