OFFICIAL USE ONLY be TEST PERIOD OPERATIONAL GUIDES ae Radiation Exposure The maximum permissible exposures have been defined by the Division of Biology and Nedicine, AEC, Washington, D.C. The dosage of any individual shall not be allowed to exceed this moximm level. The total cumulative exposure to TG 7.5 person- nel authorized by current JIF-7 directives is as follows; (1) Gamma -- a maximm of 3.0 roentgens per any 13 consecutive week period, with a maximum of 5.0 r within a period of one calendar year. (2) Alpha -- 10,000 units per any consecutive 13-week period, computed by multiplying the average air concentration in the area of exposure in a/m/m by the hours of exposure, when no protective equipment is worn. This excludes natural background. be Radiation Exposure Control (1) Persons in charge of work or construction parties are responsible for controlling the radiation exposures of their personnel. (2) Any exception to these guides must be approved by CTG 7.5 and CJTF SEVEN. §- OFFICIAL USE GNLY

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