Document: NUREG-0800
Document ID: faf774de-7226-41f8-ba11-7cf612907af6
Document Type: srp
Title: GASEOUS WASTE MANAGEMENT SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1306/ML13065A119.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.3
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CFR Title: 

Content:
the design, controls in monitoring deviations of in-plant exhaust flow rates and terminating releases or isolating process flows when deviations exceed preset limits. Other considerations may include determining whether system logic demands that a valve or damper should fail in the closed position in protecting the system from further contamination, terminating releases to the environment, or diverting process streams or effluents to appropriate treatment systems. Acceptable guidance is discussed in SRP Section 11.5 and ANS N42.18-2004. The average input flow rates and volumes are compared with the design flows to determine the fraction of time individual systems must be online to process normal waste inputs. The review considers the operational flexibility designed into the system (i.e., cross-connections between systems, redundant or reserve processing equipment, reserve storage capacity, and reliance on mobile processing systems). Based on the usage factors and operational flexibilities, an evaluation of the overall system capability to process and control wastes as related to items A through F above, is performed by comparing design flows with the potential process routes and equipment capacities. System capabilities to treat and hold for decay will be evaluated using the guidance and methods described in NUREG-0016 or NUREG-0017 and RG 1.112, as modified to reflect design features. If an alternate method includes the use of mobile processing 11.3-25 Draft Revision 4 – August 2014 systems connected to permanently installed GWMS systems, the staff will conduct a parallel review and evaluation using the above guidance and acceptance criteria. 5. The quality group and safety classifications of piping and equipment in the GRS portion of the GWMS are compared to the guidance of RG 1.143 and 4.21 for gaseous wastes produced during normal operation and AOOs. The seismic design criteria of equipment and structures housing the GRS are also compared to the design