Lessons learned from a review of post-accident sampling systems, high range effluent monitors and high concentration particulate iodine samplers
Post-accident sampling systems (PASS), high range gaseous effluent monitors and sampling systems for particulates and iodine in high concentrations have been reviewed at twenty-one licensee sites in Region I of the US Nuclear Regulatory Commission which includes fifteen BWR's and fourteen PWR's. Although most of the installed PASS met the criteria, the highest operational readiness was found in on-line systems that were also used for routine sampling and analysis. The detectors used in the gaseous effluent monitors included external ion chambers, GM tubes, organic scintillators and Cd-Te solid state crystals. Although all were found acceptable, each had its own inherent limitations in the conversion of detector output to the time varying concentration of a post-accident mixture of noble gases. None of the installed particulate and iodine samplers fully met all of the criteria. Their principal limitations included a lack of documentation showing that they could obtain a representative sample and that many of them would collect of an excessive amount of activity at the design criteria. 10 refs., 4 figs., 5 tabs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Knox Consultants, Inc., Dunwoody, GA (USA); Nuclear Regulatory Commission, King of Prussia, PA (USA). Region I
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5745133
- Report Number(s):
- BNL-NUREG-40326; CONF-871202-3; ON: DE88001554
- Resource Relation:
- Conference: 21. mid-year meeting of the Health Physics Society: power reactor health physics, Miami Beach, FL, USA, 12 Dec 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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