HTGR accident initiation and progression analysis status report. Volume VII. Occupational radiation exposures from gas-borne and plateout activities

Technical Report · Fri Jan 30 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7283894· OSTI ID:7283894

As a part of the Accident Initiation and Progression Analysis (AIPA) program, calculations were performed of the occupational dose rates and man-rem exposures from gas-borne and plateout activities in a reference 3000-MW(t) HTGR plant. The study included a preliminary survey to determine the most important contributors by operation or radiation source to the man-rem exposures. This survey was followed by detailed calculations for the most important cases. Median and 95 percent-confidence-level man-rem exposures per year were obtained for the gaseous activity in the containment building, moisture monitor system, analytic instrumentation, helium regeneration system, gas waste system, and reflector-block shipping. Median and 95 percent-confidence-level man-rem exposures per operation were obtained for the main-circulator removal, steam-generator tube plugging, and steam-generator removal and replacement. For each of these cases, the contributions to the man-rem exposures were calculated for the important isotopes.

• Research Organization: General Atomic Co., San Diego, Calif. (USA)
• DOE Contract Number: E(04-3)-167
• OSTI ID: 7283894
• Report Number(s): GA-A-13617(Vol.7)
• Country of Publication: United States
• Language: English

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