the surface radex in which rescue operations will be carried out without regard to the radiological hazard. Monitors aboard rescue craft shall be required to determine the extent of the actual radiation hazard experienced in order that appropriate medical tests may be initiated. For emergency operations, the criteria prescribed for tactical situation (para. 13 below) will be used as a guide. For operational purposes the MPLs presented below will not be considered applicable to spotty contamination provided such areas can be effectively isolated from personnel. a. Personnel and clothing MPLs are as follows: (1) Skin readings should not be more than 1 mr/hr. Complete decontamination by bathing will be utilized for readings in excess of his level. Beta radiation exposure to the hands should not exceed 30.0 rep/week. (2) Underclothing and body equipment such as the internal surfaces of respirators should be reduced to 2 mr/hr. (3) Outer clothing should be reduced to 7 mr/hr. b. Vehicle MPLs: The interior surfaces of occupied sections of vehicles should be reduced to 7 mr/hr. The outside surfaces of vehicles 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) Operational clearances, implying that contamination exists and special procedures are required, will normally be granted by command- ing officers on the technical advice of radiological defense staff members. In peacetime, a maximum fixed contamination level of 300 mr/week ordinarily will not be exceeded except for "Operational Necessity". For this operation an MPL of 600 mr/week will be used as the upper limit for “operational necessity" unless otherwise specifically raised or lowered. Fixed alpha contamination should not exceed 500 cpm (counts per minute) per 150 cm? of area. (2) For ships and boats operating in contaminated waters, reasonable allowances will be made to differentiate between the relative contribution to the total flux from fixed contamination and that due to "shine" from contaminated waters. For this operation it will be assumed that not more than ten percent of the radiation flux entering the vessel through the sides is due to contamination which will remain fixed on the vessel upon reentry to uncontaminated waters. Ships and boats encountering levels of contamination greater than determined by the above will request special instructions. (3) Final clearances, normally granted by commanding officers, will be given upon completion of the operation provided no point of contamination is greater than 15 mr/day (beta and gamma) and no detectable alpha exists. 442