9. -eciossified 0 _ yop pik 52004 All samples of radioactive material which are courlered in aircraft will be packaged and loaded so as to reduce radiation to a minimum. The Rad-Safe Officer of TG 7.4 will have a survey made of the package to determine if adequate precautions have been taken. The following criteria will determine space and packaging requirements: a. Prior exposure of aircraft and courier personnel. b. Anticipated future exposures on trip. c. Length of time of exposure on trip. ad. In all cases, crew members will be limited to exposure rates of less than twenty (20) mr/hr. 10, All air and surface vehicles or craft used in contaminated areas will be checked through the appropriate Task Group decontamination section upon return from such areas. 11. The Maximum Permissible Limits (MPL's) of contamination listed herein are to be regarded as advisory limits for cmtrol of contamination under average conditions, and are subject to revision by waiver from the Task Force Commander in individually designated cases when extenuating. circumstances indicate the need and justification therefor. All readings of surface contamination are to be mde with Geiger coynters » with tube walls not substantially in excess of thirty (30) mg/cm* with shield open. The surface of the probe should be held one (1) inch to two (2) inches from the surface that is under observation unless otherwise specified. In all cases other than emergency or tactical situations, the ultimate criteria will be limited by the authorized MPL's for personnel, with measurements made using standard equipment and techniques for such exposure. Special instances may arise after shot time such as in the case of an air sea rescue within the ato ago inside the surface radex in which rescue gperations will be carriedout without regardto the radiological hazard. Monitors aboard rescue craft shall be required to determinethe extent of the actual radiation hazard experienced in order that appropriate medical test may be initiated. For emergency operations, the criteria prescribed for tactical situation (par 12 below) will be used as a guide. For operational purposes the MPL's presented below will not be considered applicable to spotty contamination provided such areas can be effectively isolated from personnel. a. Personnel and clothing MPL's are as follows: (1) Skin readings should not be more than one (1) mr/hr. (2) Underclothing and body equipment such as the internal surfaces of respirators should be reduced to two (2) Complete decontamination by bathing will be utilized for readings in excess of this level. Beta radiation exposure to the hands should not exceed 30.0 rep/week. mr/hr. (3) Outer clothing should be reduced to seven (7) mr/hr. Declossified poo pDiR $200.10 TASK GROUP 7.4 OPRS ORDER NO. 1-53 ANNEX H, APNDX 1 a Declassified