Document: NUREG-0800
Document ID: 65414bbc-012c-477d-8c25-466f94c1671f
Document Type: srp
Title: GASEOUS WASTE MANAGEMENT SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350105.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.3
CFR Part: 
CFR Title: 

Content:
i/Ci)/3.15x107 sec/year where, Ai = The noble gas nuclide activity determined in step 6 above, in curies/event. K1 = The total-body dose factor given as DFB1 in Table B-1 of Regulatory Guide 1.109, in mrev-n 3/pCi/yr. (G7M) = The relative concentration at the nearest exclu- sion boundary given in Figure 1 of Regulatory Guide 1.24 for ground-level releases, in sec/03. 8) The sum dose shall be less than 500 arem. Using the same parameters, the technical specifications will set a curie limit on a tank, based on the maximum of 500 mrem at the nearest exclusion boundary and using the same noble gas mixture. b) Charcoal Delay Units: The safety analysis for the radiological consequences or a single failure of an active component in a waste gas system with charcoal delay units assumes that the charcoal unit is bypassed with a 1-hour release to the environs. The staff considers that either a line bypass valve malfunction, control error, or bed bypass would require the remedial action by isolation, and that starting an alternate charcoal unit, if available, or reducing reactor power could take up to 2 hours. The radioactive noble gas concentration should be determined based on the system design capacity source term using the parameters and principal components considered for pretreatment and collection of waste gas to the waste gas system charcoal delay units during normal operation, including anticipated operational occurrences. To determine the releases without the charcoal delay unit, the staff method of calculation uses the BWR-GALE Code (HUREG-0016) and requires manual calculations to determine the radiological impact. Alterations to the PWR-GALE Code (NUREG-0017) are also included. 1) Enter a value of 0.02 for the "Holdup Time, in days, for Xe." (BWR or PWR-GALE Code) 2) Enter a value of 0.02 for the "Holdup Time, in days, for Kr." (BWR or PWR-GALE Code) 11. 3-15 Rev. 0 - July 1981 (This time, about 30 minutes, is considered for gases to travel through the components in