be recorded in a conspicuous manner (red ink). If the temperature  exceeds  110 F  in  smokeless  powder, rocket  motor  and  JATO  magazines,  the  temperature must  be  checked  hourly  and  recorded  in  a  separate notebook. These recorded temperatures are transferred daily to the permanent log. Any magazine in which the temperature  is  consistently  above  100 F  must  be reported  to  the  Naval  Sea  Systems  Command (NAVSEASYSCOM). Cleanliness in Magazines All  magazines  and  other  spaces  containing explosives  must  be  kept  scrupulously  clean. Combustible materials such as paper, oily rags, cotton waste, solvents, and volatile liquids are not permitted in or near a magazine except when they are being used for approved purposes. Care must be taken to ensure that  no  steel  wool,  sand,  gravel,  or  other  abrasive substances are on the decks or other working places where  explosives  are  handled.  The  bulkheads, overhead, and deck should be wiped or washed down as  often  as  necessary  to  keep  them  clean.  All ammunition holding and securing devices must be kept free of oil, grease, and paint. Work in Magazines No  work  may  be  performed  in  a  magazine  or explosive  stowage  area  unless  it  is  required  by  ship design or as part of stowing and unstowing procedures (canning, decanning, loading, and unloading dollies, etc.,) or is otherwise necessary and unavoidable. Work in a magazine normally is limited to such activities as admitting and stowing hazardous munitions, removing articles stowed in the magazine, keeping the stowage space  clean,  and  maintaining  the  equipment  in  the magazines.  Before  any  work  that  might  cause abnormally high temperatures or intense local heat in a magazine or adjacent compartment used primarily as a magazine  is  performed,  all  explosives  should  be removed  to  other  safe  stowage.  They  should  not  be returned to the magazine until the work is completed and normal conditions are restored. Appropriate  warning,  safety  precautions,  and instructions must be posted conspicuously in all areas where  explosives,  dangerous  chemicals,  or  other hazardous  materials  are  stowed.  Training  must  be conducted  on  a  regular  basis  to  ensure  that  all personnel are aware of the meaning and intent of all warning signs, safety precautions, and instructions. Food,  drink,  and  smoking  are  prohibited  in  a magazine  or  magazine  area.  Personnel  are  not permitted to carry cigarette lighters or any type of open flame, or spark or flame-producing apparatus in these areas. Electrical  switches,  junction  boxes,  and convenience outlets must be protected with watertight fittings.  Be  sure  to  keep  protective  caps  and  covers installed on these fixtures. Magazine lighting may be either fluorescent or incandescent. The light fixtures must  be  watertight,  installed  properly,  and well-maintained. Be sure to use the proper size bulb where plastic protective globes are used. Never have a naked, unprotected light in a magazine. Sound-powered  telephone  circuits  are  usually installed in magazine spaces. They should be tested routinely  and  maintained  in  good  condition.  Traffic and  working  areas  of  certain  magazines  will  have  a nonskid  deck  covering.  There  are  different  types  of coverings available, so check current instructions for the approved materials. Ammunition  magazines  must  be  identified properly  and  clearly.  In  addition  to  the  standard compartment  designators,  another  important  sign  or label  must  be  in  place.  This  marking  is  commonly called the AMMUNITION FAR SIDE sign. The sign (fig. 5-7) will be installed on all bulkheads, decks, and overheads  surrounding  a  magazine.  On  vertical bulkheads, the signs should be 5 feet above the deck and spaced every 12 feet apart. On horizontal decks and overheads, the signs should be 12 feet apart and located to ensure maximum visibility. The sign should not  be  installed  where  it  is  visible  from  outside  the ship. The sign is a yellow rectangle, 5 inches high by 9 inches wide. Painted on the sign are black slanted lines, 1/8-inch thick and one-inch long, on 3/4-inch centers along  the  top  and  bottom  edges,  with  lines  slanting from top right to bottom left. The letters are 1/8-inch thick and 3/4-inch high. Magazine Security All  ammunition  stowage  spaces  containing ammunition  or  explosives  are  required,  by  current directives and instructions, to be secured and locked unless  work  is  actually  being  performed  within  the space.  Properly  securing  an  ammunition  stowage space includes ensuring that all environmental controls are properly set and that all hatches, doors, or accesses are closed. It also includes ensuring that all dogs are 5-15