Radiological Safety Regulations CJTF SEVEN No 17. 3-53 The MPLs listed herein are to be regarded as advisory limits for cmtrol under average conditions. All readings of surface contaxinatim are to be made with Geiger counters, with tube walls not substantially in excess of 30 mg/cm? with shield open unless otherwise specie fied, The surface of the probe should be held one (1) inch to twe (2) inches from the surface that is under observation unless other- wise specified. For operational purposes the contamination MPLs presented below will not be ccnsidered applicable tc spotty contamina= tion provided such areas can be effectively isolated from personnel. a. Fersonnel and Clocking MPLs (3) Skar readings shculd not be more than 1.0 mr/hr. Complete decontamination by bathing will be utilized for readings in excess of this level, If the body is generally contaminated and especially if contamination is on the eyes or gonads, special efforts should be made to reduce the contamination level. In general, however, it is not considered profitable to abrade the skin or epilate the scalp in an attempt to reduce stubborn contamination below 1 mr/nr (about 1000 cpm). Beta radiation exposure to the hands should not exceed 30.0 rep for the operational period, as defined in paragraph 4, above, (2) Underclothing and body equipment such as the internal surfaces of respirators should be reduced te 2 mr/hr. (3) Outer clothing should be reduced to 7 mr/nr. b. Vehicle MPLs. The interior surfaces of occupied sections of vehicles should be reduced to 7 mr/hr. The outside surfaces of wehicles should be reduced to less than 7 mr/hr (gamma only) at five (5) or six (6) inches from the surface. c. Ship and Boat MPLs (1) It is desired to point out that the employment of the ships and units in 1G 7.3, insofar as radiological safety is concerned, is not considered routine usage within the purview of NavMed P-1325, “Radiological Safety Regulations". Current revision of NavMed P-1325 indicates that its provisions do not apply for special operations such as field tests and that for such operations naval personnel will operate under regulations set forth by the task force commander as approved by the Chief of Naval Operations. (2) In general, ships and boats operating in waters near shot sites after shot times may become contaminated, Monitors shall be aboard all such craft operating after shot time, either as passengers or members of the crew, until such time as radiological restrictions are lifted. (3) Task group commanders will take necessary action to ensure that personnel of ships and boats are not over-exposed to radiation and that ships and boats are not contaminated excessively. The criterion in both cases js-that no personnel will be over-exposed as defined by paragraph"¥a, above, except in emergencies or tactical operations, and that after the operational period no personnel will receive more than 0.3 roentgens per week from contaminated equipment. (4) For ships and boats operating in contaminated waters, reason able allowances will be made to differentiate between the relative N-I<i,