Document: NUREG-0800
Document ID: 67030b27-389f-448c-8522-1a593f9928e6
Document Type: srp
Title: for instrumentation used to monitor and control radioactive effluent releases.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740449.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
e LWMS design capacity will encompass the following major areas: A. The system capability to process wastes in the event of a single major equipment item failure (e.g., outage of the primary means for processing liquid wastes). B. The system capability to accept additional wastes during operations which result in excessive liquid waste generation. 11.2-13 Revision 4 - May 2010 C. The system capability to process wastes at design-basis fission product leakage levels (i.e., from 1 percent of the fuel producing power in a pressurized-water reactor (PWR), or in a BWR consistent with a noble gas release rate of 3.7 megabecquerels per second per megawatt thermal (MBq/s per MWt) (100 microcuries (μCi)/s per MWt) measured after a 30-minute delay. D. Types and characteristics of filtration systems, ion-exchange resins, and adsorbent media to treat process and effluent streams, with removal efficiencies, decontamination factors, and holdup times, for example, meeting or exceeding the performance of NRC generic guidance (NUREG-0016 or NUREG-0017), standard DCs, or topical reports, taking into account the expected physical, chemical, and radiological properties of liquid process and effluent streams. The average input flows are compared with the design flows to determine the fraction of time individual subsystems must be online to process normal waste inputs. The review includes the operational flexibility designed into the system (i.e., cross-connections between subsystems, redundant or reserve processing equipment, and reserve storage capacity). Based on the usage factors and operational flexibilities, an evaluation of the overall system capability to process wastes as related to item A, B, or C, above, is performed by comparing design flows with the potential process routes and equipment capacities. It will be assumed that the primary means for processing liquid waste is unavailable for 2 consecutive days per week for maintenance. If 2 days of holdup capacity or a primary