Appendix1 to Annex K to JTF SEWN OUerationsPlan No. 1-58 RADIOL@ICAL SAFETY REGULATIONS c. The surfaceRADEX will be determinedby actual eurveywith RadiationDetection,Indicationand Computation(RADIAC) equipmentafter shot time. The most rapid methcd of accomplishingsurfacesurveysin the early stagestill be by aircraftand helicopterflightin and aroundthe surface of contaminatedareas. From the radiationintensities measuredat a known altitude,it Is poss~>ieto obtain an estimateof radiationdoeage ratee which would be encountered on the surfaceof the grwnd or water. Actualwater samples frcnnthe lagoontill also be utilized. Ground surveywill follow these guides to determinedefinitelythe contaminated regioneand objects. Fornal ground eurveyof the shot atoll, as feasible,will be accomplishedon H plus 24 hours. Permissible@oeures (MPEIs)and Maxhum Permissible 3. The ~ Limits (MPL’s)as statedherein are applicableto a field experimentaltest of nucleardevices in peacetimewherein numbers of per$onnelengagedin these tests have been previoudy expoeed or will be conttiuouslyexposedto potentialradiation hazards. It may become necessaryfrom a study of personnel recordsto reduce the MPE for certainindividualswho have recentlybeen overexposed to radiation. 4. Due to the specialnature of field tests it is consideredthat a policy of atfict adherenceto the radiologicalstandardsprescribed for routinework is not realistic, The regulationsset forth herein have been designatedas reasonableand safe compromise consideringconservationof personnelexposures,the international import of the test and the cost aepectsof operationaldelays chargeableto excessiveradiologicalprecautions. In all cases other than emergenciesor tacticalsituationsthe ulttite criteriawill be limitedby the MPEIs for personnel. Special instancesmay arige such as in the case of an air-searescue within the RADEX in which operationswill be carriedout without regardto the MPE!s ad MPLIs prescribedherein. 5. Task Force radiationdosage controlwill start on first shot ready date minus fifteendays ami terminateupon departureof individualsfrom the forward area, or on the last shot plus fifteendays, whicheveroccurs first. All personnelwill be consideredto have arrived at the EniwetokProvingGround by first shot ready date minue 15 daye. Prior and subsequentto this period, radiationdoaage controlwill be as prescribedby cm 7.5. 6. MPE a. MPE for personnelparticipatingin this operationiS 3.75 roentgens(ganzna only) per consecutive13 week pericd,with a maximum of 5.0 r for the Operation. b. A epecialMPE of 10 roentgens(gammaonly) is authorizedfor the operatioml period for crew members of ai~sampling aircraft. (1) In event of operationalerror or emergencyan additional dose of 10 roentgens(gamnaonly) will be accepted. (2) Any dose in excess of this 20 roentgenstotal will be consideredas an over-exposureand will be properly accountedfor in writing by the Commanderof the unit, y,?