»? Joint Task Force SEVEN Task Srcup 7.3 Washington 25, D.C. 7 December 1653, L2tCR errtion Plan CTG 7.3 No, 1-53 Appendix TII te Annex G Decontzmination Procedures © le General, Radioactive contamination will very probably at some time during Coeratien CASTLE render en essential area or piece of equipment temporarily unuseble. In such a situation, the reduction of such radioactive contamination may be mandatory to successful accomplishment of the eperaticn,. Decontaminstion ef units and persennel shall be accomplished on the site te reduce the hazard to eperational levels, ae Definitions (Ref, NavMed P-1325) (1) Operational Clearance implies that radioactive contamination exists and thet special eperating precedures are required. Cemmander, Task Greup 7.3 is responsible for authorizing operetional clearences, (2) Final Clearence., Following the completion of decontaminetion, (3) It sheuld be remembered that radierctive fission preducts decay or if a ship has not been contaminated, Commander Task Group 7.3 may auth-~ orize final clearance for a particular ship or unit. This shall apply, also, te final clearance on the decentamination of all forms ef equipment, instruments, furniture, end personal items, Final clearance shall imply that the area or ebject concerned has been monitored end found te have ne point exceeding 0.015R/24 hr beta plus gamma and no detectable.alpha emitting isotopes. In the event that a unit ef the task group has some area or material, at the conclusion ef Operaticn CASTLE, which has net yielded to decontamination, this unit may be released to its type commander under operational clearence, as time passes, the most rapid decay taking place within the first few hours after detenstion. To compute desages, see "Radiolegical Defense”, Vol IT pp 2. 223-229 . Reagents. In most of the decontaminztion eperstions wich might be re- quired of Task Group 7.3, fresh and/or salt water sprayed under pressure shall be used for gress decontaminatien, Ordinarily, salt water should net be used on. aircraft. Other reagents which are used where water is inapprepriate er inedeouate are: Standard Cleaner, USN C~152, or 147, 5-10% scdiun citrate sclutien or USAF cleaning compeund Spec. 2001g§ (gunk), kerosene and scap powders. Cleaners with an oil carrier are especially suitable fer air- eraft decontamination. G-ITI-1