Analysis of Cancer Risks in Populations Near Nuclear Facilities Phase 1 (2012) / Chapter Skim
Currently Skimming:
Appendix G: Radiological Effluent Technical Specifications (RETS)
Appendix G: Radiological Effluent Technical Specifications (RETS)
Pages 359-366
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 359... ...
Effluent monitoring consists of continuous measurements of some effluent streams; periodic measurement of radioactive particles trapped on filters, and measurement of samples from effluents released in batches. Detailed information about the RETS program for a given plant is contained in the licensee's Offsite Dose Calculational Manual (ODCM)
|
From page 360... ...
G.1 EFFLUENT MONITORING AT NUCLEAR PLANTS Regulatory Guide 1.21 (Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste) provides regulatory guidance for sampling and analysis of effluents from USNRClicensed nuclear plants.
|
From page 361... ...
If the leak or spill occurs onsite, then a bounding analysis can be used to assess the potential offsite hazard. Continuous effluent releases are typically monitored by measuring gross radioactivity with a continuously indicating radiation monitoring system such as a sodium iodide detector.
|
From page 362... ...
1 × 10–4 Monthlyc,d Monthlyc Other Principal 1 × 10–6 airborne Grab sample gamma emittersb release points Tritium (oxide) 1 × 10–12 Continuouse Weeklyf All release Iodine-131 types listed Charcoal above sample 1 × 10–11 Continuouse Weeklyf Principal Particulate gamma emittersa sample 1 × 10–11 Continuouse Monthly Gross alpha Composite particulate analysis 1 × 10–11 Continuouse Quarterly Strontium-89 Composite Strontium-90 particulate sample 1 × 10–6 Continuouse Noble gas Noble gases monitor Gross beta or gamma 5 × 10–7 Batch Wasteg Liquid Each batch -- Each batch -- Principal completed completed prior gamma Release emittersh prior to each to each release Tanks release 1 × 10–6 I-131 1 × 10–5 a.
|
From page 363... ...
cSampling and analysis shall also be performed following shutdown, startup, or a thermal power change exceeding 15 percent of rated thermal power within a 1-hour period. dTritium grab samples shall be taken at least once every 7 days from the ventilation exhaust from the spent fuel pool area whenever spent fuel is in the spent fuel pool.
|
From page 364... ...
Other gamma peaks that are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Semiannual Radioactive Effluent Release Report pursuant to Control 6.9.1.4 in the format outlined in Regulatory Guide 1.21, Appendix B, Revision 1, June 1974. iA composite sample is one in which the quantity of liquid sampled is proportional to the quantity of liquid waste discharged and in which the method of sampling employed results in a specimen that is representative of the liquids released.
|
From page 365... ...
This guide recommends that a program of soil, water, air, vegetation, food, and fish sampling and direct radiation monitoring be initiated at least 12 months prior to the construction of the milling facility. The guide also recommends that an operational monitoring program be conducted during construction and after the commencement of milling operations.
|
From page 366... ...
This subpart requires radionuclide emission measurements to be made at all release points that have a potential to discharge radionuclides into the air in quantities that could cause an effective dose equivalent in excess of 0.1 mrem per year to any member of the public. Confirmatory measurements are required for other release points that have a potential to release radionuclides into the air.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.