Document: NUREG-0800
Document ID: e459fbaa-1cf6-4054-a83a-500a6895feaf
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350110.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
rge, or, alternatively (2) A periodic automatic grab sampling system with at least two sample collection tanks. The system should be designed to collect a fixed volume of sample at a rate proportional to the measured flow in the sampled stream discharge. (3) Radioactive materials other than noble gases in gaseous effluents. A continuous sampling system with replaceable particulate filter and radioiodine adsorber. The system should be designed to automat- ically take samples at a fixed or measured flow ratio of the sample throughput to the sampled stream discharge flow. For intermittently operating effluent release points, the system should be designed to automatically take samples whenever there is flow in the effluent stream. For all of the above samples, a periodic analysis frequency for the collected samples should be specified in the technical specifications. 2. Provisions should be made for the instrumented monitoring of, or the periodic or continuous sampling and analysis of, radioactive waste process systems. To meet Criteria 60 and 63, as they relate to radio- active waste systems and detection of excessive radiation levels and initiation of appropriate safety actions, the design of systems should meet the guidelines of Appendix 11.5-A (this SRP section), Regulatory Guide 1.21 (Position C, as applicable), Regulatory Guide 1.97 (Posi- tion C and Table 1 or Table 2, as applicable), and Regulatory Guide 4.15 (Position C). a. Provisions should be made to assure representative sampling from radioactive process streams and tank contents. Recirculation pumps for liquid waste tanks (collection or sample test tanks) should be capable of recirculating at a rate of not less than IL 5-3 Rev. 3 - July 1981 two tank volumes in eight hours. For gaseous liquid process stream samples, provisions should be made for purging sample lines and for reducing plateout in sample lines. Provisions for gaseous sampling from ducts and stacks should be in agreement with ANSI N13.1. (Ref.