13. The arrival and proposed use of radioactive sources at the Pacific Proving Ground will be reported to the RadSafe Officer of TG 7.1. 14. Transportation of radioactive material to and from the forward area shall be in accordance with AEC regulations for escorted shipment of such material. The assignment of couriers and RadSafe monitors will be the subject of separate instructions. No radioactive material shall be removed from the test site except as authorized in experimental projects. 15. All samples of radioactive material which are couriered in aircraft will be packaged and loaded so as to reduce radiation to a minimum. Prior to departure of such aircraft, the RadSafe Officer, TG 7.4, will have a survey made of the aircraft cargo to determine if adequate precautions have been taken. The following criteria will determine space and packaging requirements: a. Prior exposure of aircraft crew, courier and passengers. b. Anticipated future exposures on trip, considering length of trip, compartmental loading requirements and capability to isolate personnel from radioactive material. 16. All air and surface vehicles or craft used in contaminated areas will be checked through the appropriate task jroup decontamination section upon return from such areas. 17. The MPLs listed herein are to be regarded as advisory limits for control under average conditions. All readings of surface contamination are to be made with Geiger counters, with tube walls not substantially in excess of 30 mg/cm? with shield open unless otherwise specified. 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. For operational purposes the contamination 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 (1) Skin readings should 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/hr (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 to 2 mr/hr. 454