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:
sonably expected to be within 50 miles of the reactor. d. The concentrations of radioactive materials in gaseous effluents released to an unrestricted area should not exceed the limits specified in 10 CFR Part 20, Appendix B, Table II, Column 1. 2. The gaseous waste management system should be designed to meet the anticipated processing requirements of the plant. Adequate capacity should be provided to process gaseous wastes during periods when major processing equipment way be down for maintenance (single failures) and during periods of excessive waste generation. ETSB will accept systems that have adequate capacity to process the anticipated wastes and that are capable of operating within the design objectives during normal operation, including anticipated operational occurrences. To meet these processing demands, ETSB will consider shared systems, redundant equipment, and reserve storage capacity. 3. The seismic design and quality group classification of components used in the gaseous waste management systems and structures housing these systems should conform to the guidelines of Regulatory Guide 1.143. The design should include precautions to stop continuous leakage paths, i.e., to provide liquid seals downstream of rupture discs and to prevent permanent loss of the liquid seals in the event of an explosion. 4. ETSB will accept system designs that contain provisions to control leakage and to. facilitate operation and maintenance in accordance with the guidelines of Regulatory Guide 1.143. 5. ETSB will use the guidelines in Regulatory Guide 1.140 (Ref. 9) for the design, testing and maintenance of HEPA filters and charcoal adsorbers installed in normal ventilation exhaust systems. If decontamination factors for iodine different from those specified in Regulatory Guide 1.140 are used for design purposes, they should be supported by test data under operating or simulated operating conditions (temperature, pressure, humidity, expected iodine concen- 'trations, and