over the ship. oo . . (6 . During” operation of the waehdown. systens it was found necesse ry on all shipe to heave a few personnel topeids and exposed to rediation in order to clear fire main streinors, replace ruptured heses, and to teke kinks out of the hoses when the weshdown systen wee first | turned on. , To fecilitete docontaminetion of helicopters returning te the BAISORC after rediological exposure, a large (60 ft x 70 ft) cenvas rectengle wes constructed of 20: ounce canvas. The terveulin wee treated wi th canves preservative for water proofing. When the tarpaulin wes in tlece eft of the elevator the sidcs were reisod by use of stanchions end wire crvle to form a so-called "bathtub®. Tresh water ‘under pressure wes provided on thd flight deck by using e P-5C0 pump connected to fresh water mains below decks. Tho "eth tub" was equipped | with two dreins which wero tended over the side. . Protective clothing recommended to the shins included coverells, nerine can, rubber boots end rubber gloves. This clothing wes found setisfactory for keeping the bedy unconteminated, end is much more practiceblo far work in hot climates then weterproof avita. Special plastic suits wore used in Project $.4 during dccontomin-tion. Their use wes cbendoned because persomel suffered from hee+ exhoustion after avout helf en hour of work. All units of TG 7.3 were given en atomic defanse inspection. On shipw this consistcd of an atomic defense exercise end en insvection of shin'a closure 27 gas tight envelope, degontrminetion strtions, SJ a3 oo -