Document: NUREG-0800
Document ID: 3c241845-034f-4f89-b12a-f51967895c13
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1307/ML13071A494.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
vity levels and conformance with TS. 9. The PERMISS is reviewed to ensure that the design includes provisions to prevent and collect leakage and spillage associated with sample collection, processing, storage, and operation of skid-mounted monitoring and sampling equipment conform to the guidance of RG 1.143 and RG 4.21 in meeting the requirements of 10 CFR 20.1406. The review should confirm whether design features are included to return samples collected from process and effluents streams to their origins, and prevent sampled streams from being discharged locally or released to the environment without being treated and monitored using the guidance of RG 1.143 and RG 4.21 and NEI 08-08A. The review should evaluate provisions in purging and flushing sampling lines and monitors with nonradioactive fluids (e.g., clean water, air, inert gases) and route purged or flushed fluids to the LWMS and GWMS. In addition, the review should confirm that the source of nonradioactive purging or flushing fluid is protected from radioactive cross- 11.5-35 Draft Revision 6 – August 2014 contamination using appropriate measures, such as check valves, backflow preventers, interlocks, differential pressures, etc. The review considers information describing design features that will minimize, to the extent practicable, contamination of the facility and environment; facilitate eventual decommissioning; and minimize, to the extent practicable, the generation of extraneous radioactive wastes associated with the operation of the PERMISS as a result of operator error and processing equipment failures or malfunctions. In addition, the review may also consider the information contained in the DC application, SAR design updates, or the COL application to the extent not addressed in a referenced certified design. In addressing the above, the NRC guidance includes the following: A. RG 1.143 and RG 4.21 for system process streams, gaseous and liquid wastes, and gaseous and liquid effluents produced