Headband, Universal Size NSN Sound Sentry 6515-00-181-8058 Type Sound Ban Type 6515-00-392-0726 Earplug Case Plastic Type 6515-00-299-8287 Circumaural Muff Types: Straightaway 4240-00-759-3290 Muffs Overheadband 4240-00-691-5617 Type H Napeband 4240-00-022-2946 (for use with hard hat) Associated Equipment Replacement 4240-00-674-5379 Filter, dome Replacement Seal, 4240-00-979-4040 dome Gauge, Earplug 6505-00-117-8552 sizing Effective dB Reduction 9 dB 18 dB N/A 23 dB 23 dB 20 dB N/A N/A N/A NOTE: ALL EARPLUGS SHOULD BE WASHED BEFORE AND AFTER EACH USE. Sight Conservation Program Navy policy requires that personnel working in eye-hazardous areas of operations wear appropriate eye-protective equipment. Examples of those operations include pouring or handling of molten metals or corrosive liquids and solids, cutting and welding, drilling, grinding, milling, chipping,  and  sandblasting  or  other  dust- producing operations. Persons in the vicinity of such operations, including other workers, super- visors, or visitors, must also wear eye-protective equipment. Various designs of eye protection are available for protection against flying objects, fine dust particles  or  liquid  splashes,  and  glare  and radiant energy. As a minimum, those devices should  provide  adequate  protection  for  the hazards specified, be reasonably comfortable, and fit snugly without interfering unnecessarily with movement. They must be durable, capable of being disinfected, and easy to clean. In  addition,  American  National  Standards Institute (ANSI) specification Z87.1-1979 outlines reasonable ways to select the right equipment and prescribes its safe use. It defines special terms in the eye- and face-protection field, such as absorptive lenses, bridge size, and cover plate. It also establishes requirements for welding helmets, hand shields, face shields, and shields for eye protection. The standard includes an illustrated selection chart of recommended protectors and an applications chart showing what equipment or  combinations  of  equipment  best  suit  each hazardous  operation. Appropriate warning signs should be posted in  all  eye-hazardous  areas.  Also  emergency eyewash facilities should be provided and made easily  accessible  wherever  personnel  may  be exposed to corrosive materials. The prevention of eye mishaps requires all persons who may be in eye-hazardous areas to wear protective eyewear. That applies to workers, visitors, instructors, or others passing through an eye-hazardous area.   Activities  should  provide protection for those personnel by procuring a sufficient  quantity  of  heavy-duty  goggles  and plastic  eye  protectors.  Personnel  who  wear personal glasses to correct their eyesight should be provided with a suitable eye protector to wear over them. Arrangements should always be made for the issue, care, sterilization, and reissue of these “common use” eye protectors and goggles. Respiratory Protection Program Many repair and maintenance environments in the Navy are subject to air contaminants that can be dangerous if inhaled. Most air contaminants can be classified as follows: Dust. Small solid particles created from the breaking up of larger particles by machine shop tools and by processes such as paint chipping, sanding, woodworking, or abrasive blasting. Fumes. Very small particles of condensation of vaporized solids. This term is generally applied to metal oxides. Smoke. Carbon or soot particles resulting from  the  incomplete  combustion  of  coal, wood, and oil products. Mist and fog. Finely divided liquid droplets suspended in air by condensation or atomiza- tion. Examples include solvent sprays and spray painting. 6-5