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:
e discharge line by closing an isolation valve (see SRP Acceptance Criterion 3.D and Technical Rationale Item 6 and note “m” below). k - Sample point should be available to obtain grab samples for laboratory analyses as indicated by notations or for the purpose of confirming the results of continuous radiation monitoring. l - Continuous sampler (see SRP Acceptance Criterion 1.B). m - The automatic control feature may be alternatively provided by a process continuous radiation monitor located at a point upstream of the systems’ effluent continuous radiation monitor to ensure the timely closure of the isolation valve/damper to avoid exceeding discharge limits. If part of the design, controls in monitoring deviations of in-plant dilution and exhaust flow rates in 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 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 presented in this SRP section and ANS N42.18-2004. These provisions also apply to liquid and gaseous process radiation monitoring equipment not covered by the ODCM. 11.5-53 Draft Revision 6 – August 2014 NG - Noble gas radioactivity, such as argon, krypton, and xenon gases. I - Iodine radioactivity, radioactivity of other radionuclides in particulate and gaseous form (e.g., carbon-14), and alpha emitters. H3 - Tritium as tritiated water and water vapors, and elemental and organic forms. R - Gross radioactivity (beta radiation, gamma radiation, or total beta plus gamma). This provision also applies to measurement methods relying on the use of surrogate radionuclides, as easy-to-detect, in accounting for the presence of hard-to-detect radionuclides when not specifically analyzed or monitored. R1 - For