|
KMID : 0364920090340040176
|
|
Journal of Radiation Protection and Research
2009 Volume.34 No. 4 p.176 ~ p.183
|
|
|
An Analysis of Radiation Field Characteristics for Estimating the Extremity Dose in Nuclear Power Plants
|
|
Kim Hee-Geun
Kong Tae-Young
|
|
|
Abstract
|
|
|
|
Maintenance on the water chamber of steam generator during outage in nuclear power plants (NPPs) has a likelihood of high radiation exposure to whole body of workers even short time period due to the high radiation exposure rates. In particular, it is expected that hands would receive the highest radiation exposure because of its contact with radiation materials. In this study, characteristic analysis of inhomogeneous radiation fields for contact operations was conducted using thermoluminescent dosimeter (TLD) readouts from the application tests of two-dosimeter algorithm to Korean NPPs in 2004. It is regarded that inhomogeneous radiation fields for contact operations in NPPs are dominated by high energy photons. In addition, field tests for workers who participated in maintenance on the steam generator during outage at Ulchin NPPs in 2009 and pressure tube replacement at Wolsong NPPs in 2009 were conducted to analyze radiation fields and to estimate the extremity dose. As a result, radiation fields were dominated by high energy photons.
|
|
|
KEYWORD
|
|
|
Radiation Field, High Energy Photon, High Exposure Contact Work, Shallow and Deep Dose, Extremity Dosimeter, Steam Generator Maintenance Work
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|