<a &;ht fF Operation Plan :OTG Ted No. 1-53 the gecessity for decontaminetien. The interler ef the ship is preserved in its "clean" status by setting ef the apprepriate damage control cendition ef readiness tea seal the ship's envelepe. hw. Sheuld the abeve method fail te prevent contaminatian, decontaminatien suits shall be wern te protect the damege contrel parties who must work ex the cantaminated sections of the ship. In the use of water after the ship has been expesed to contamination, special techniques are required to centrel the centaminating spray resultingfrom hosing operations, If passible, the hosing of an ebject should be carried en frem the upwind side se that the spray will not drift back on the epersters. The mest satisfectory epernting pesitien is from 15 to 20 feet from the surface, On vertical surfaces, the water should be directed to strike the surfsce at an angle of 30 te 45 degrees, The complicatien of a brisk wind can be partially offset by using a wind-break, -For hosing down large centaminated areas, a rate ef appreximately 4 square feet per minute should be used, - Soecial attention must be given to the drainage from these eperations to allew direct flew to disposal points ever the side, c. Hosing is net the complete answer to decontamination; serubbing d. Weoden surfaces, if contaminated, can be decontaminated as outlined techniques may have to be used, belew under General Boat Decontrminstien Precedures, 5. General Boat Decontamination Procedures. a. If boet exterior, i,e,, painted surfece, is contamineted from passage threugh contaminated water, hesing dewn and scrubbing if necess houid -béesufficient to reduee any contamination te well below prescribed telerences,. If beat is water-berne, drainage from hosingdown should present no problan. Dispersal of radieactive products in the tepgeens-is anticipated te be sufficient te prevent recontaminetien of other boats, If interier ef beat is contaminated, hesing down and pumping out ever the side should suffice, Hewever, repeated use ef this method can concentrate some contamination in the bilge pump system which is net desirable, and this pump should be especially monitered. DNA b, Contamination can be intreduced inte beats by contaminated passengers, radioactive "fall-out" from atomic burst, er seepage of contaminated watery inte bilges. -It is considered most likely thet any majer contamination in the boats will ceme fyem contamination assengers and frou-send—unintertienadts Pero peenAbrougt’ on board from contaminated pee readily decontaminable as described ebove. ee Uspainted woed will not bs as” Any contaminatien should be meem] [86