EN1O/R: ee fe\w Ad aARer riny ets C-O-N-F-I-D-W-N-T-I-4deLS Subject: ~ Me * ° ~ : - Safety negulations for work in Target Vessels for- nerly JTF-l, intent of sane is complied with. It is, however, ~ointed out thot these vebsels will have completed a long trip fron Kw..jelein, their compartments will heve been closed for long periods of time, “nd it will be considered dengerousto enter such conp:rtnents without adequxte test procedure, Tests first should be mode in the usual monner for explosive hazards, then for the presente of cdequcte amounts of oxygen, ond finally ‘for toxic gases end vt.ors. Cornartments in which such hazards sure discovered shall be thorou,hly ventilsted prior to entry, care being taken to avoid spreading radionctive contcainction by the process of ventilation, In ventlating a space, the primary cencern cust be to avoid stirring up dust, The ships ventiletion systems shall not be used to accoaplish needed ventilation, nor shall vent sets or fen motors be started for test purposes, If naturel ventilation is insufticient to provide the required cir-change portable blowers may be rigzed, Portable blowers, both exhaust end supply, should be operated so as to produce the lowest air velocities necessary to chnge tne cir in the compartment. In eny event personnel will go below only when properly protected by adequate positive pressure mask or rescue breathing spparatus end when working in pairs, une below end one topside, while the blowers cre operating all hands shall be ordered off -nd away fron the ship, or shall wear the rescue breathing spparatus cr positive pressure Liask. (b) Fortable diesel sets or other power equipment shali not be so placed on deck that its vibration moy cause dust te fall in adjacent spoces below, or produce < dust hazard topside, (c) another type of hazard which will be found peculinr to damaged turget ships is that due to structural denage of varicus kinds, Fersonnel should be on their guard constantiy against fallin, u-teriai frou structure which has been further weakened by the long trip from Kwajclein, Loose moterial may give woy when 2 little additional weight is placed upon it. Ladders, decks, crating, nd sindlor structures my fail under fcot. xvund objects or sliding nu terials wey be present on deck caysing insecure footing. Decks uiny be slip.ery me to water or oil, It must be reclized that speces below will be very dark and the possibility of striking the head against hanging structures such as beous, -ll-

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