Gamma Dose Measurements at Zion and Fort Calhoun Stations.

摘要

This report presents data obtained from an in-plant dose-rate measurement study conducted for the Nuclear Regulatory Commission in support of the Radiological Assessments Branch of the Office of Nuclear Reactor Regulation. The objective of this study was to provide experimental data to the NRC for evaluation of the gamma radiation fields in personnel access areas within operating LWR's. As partial fulfillment of this objective,data were obtained at two PWR's on in-plant gamma radiation fields in areas such as inside and outside equipment cubicles and spent fuel pool areas. Also,airborne radionuclide concentrations were measured in areas where plant personnel could be working during a refueling outage. The data presented were obtained at the Zion Station operated by Commonwealth Edison Co. and located near Zion,Illinois and at the Fort Calhoun Station -Unit 1operated by the Omaha Public Power District and located near Blair,Nebraska. Dose-rate measurements were made in conjunction with the NRC in-plant source term measurement program and were conducted during July and November, 1976at Zion Station and August through October, 1976at Fort Calhoun Station.