The Investigation and consideration for introduction of surface contamination evaluation method based on JIS

Usui, Toshihide ; Takashima, Hideki ; Iwasa, Atsutoshi; Hamazaki, Masaaki

As to the evaluation method of surface contamination used in radiation control of ORDC, where an evaluation method of surface contamination provided by JIS (Z4329, Z4334, Z4504: 2008) is introduced, an influence on radiation control was investigated. As a result of the investigation, measurement conditions and radiation control method need to be changed where the evaluation method according to JIS (Z4329, 4334, 4504; 2008) is adopted. The operated radiation control may not be able to maintain because the detection limit is higher than current one. Therefore the procedure of surface contamination control of JIS (Z4329, 4334, 4504: 2008) should be adopted after reviewing details considering the reasonableness of radiation control.