Health Hazard — the ability of a material to either directly  or  indirectly  cause  temporary  or  permanent injury  or  incapacitation. Fire  Hazard — the ability of the material to bum when it is exposed to a heat source. Reactivity   Hazard  —  the  ability  of  a  material  to release energy when it contacts with water. This term can be defined as the tendency of a material, when in its pure state or as a commercially produced product, to  polymerize,  decompose,  condense  vigorously,  or otherwise  become  self-reactive  and  undergo  violent chemical  changes. Specific   Hazard  —  this  term  relates  to  a  special hazard, concerning the particular product or chemical, which was not covered by other labeled hazard items. The degree of hazard is expressed by a numerical code as follows: 4  =  extremely  dangerous  material 3 = dangerous hazard 2 = moderate hazard 1 = slight hazard 0 = no hazard The  example  shown  in  figure  1-8  describes  the hazards  of  methyl  ethyl  ketone.  Methyl  ethyl  ketone is  usually  found  mixed  with  paints,  oils,  and  greases from solvent cleaning, paint removers, adhesives, and cleaning   fluid   residues.   The   numbers   on   the   label identify  this  chemical  compound  as  follows: Health Hazard 2, “Hazardous” Fire   Hazard   4,   “Flash   point   below   73°F extremely dangerous materail” Figure 1-8.—Hazard warning label for methyl ethyl ketone. Reactivity   3,   “Shock   or   heat   may   detonate, dangerous material” Specific Hazard, “None” Other specific labeling requirements are provided in the NAVSUPINST 5100.27 (series). All supervisors are to review this instruction carefully. HAZARDOUS  MATERIAL  STORAGE The safest practice concerning hazardous material is  for  users  to  draw  only  the  amount  of  material  that can be used that day. On the jobsite, store hazardous materials  in  approved  storage  containers.  Place  the containers   a   minimum   of   50   feet   away   from   any ignition  device  or  source.  Plan  for  the  delivery  of proper  storage  equipment  before  hazardous  materials are  delivered  to  the  jobsite.  Since  many  hazardous materials   require   separate   storage   containers   (for example, corrosives and flammables cannot be stored together),  consult  your  safety  office. HAZARDOUS  MATERIAL  TURN-IN Dispose of excess material through an authorized hazardous   material   disposal   facility.   The   proper labeling  of  hazardous  materials  is  critical.  Properly labeled  waste  can  be  disposal  of  for  a  relatively  low price.  Unidentified  material  must  first  be  analyzed, which  is  extremely  expensive.  Anytime  you  turn-in hazardous  material,  include  a  ledgeable  MSDs  with the material. This saves valuable time and expense and it makes the job easier for supply. Avoid mixing unlike types of waste. Do not mix waste paint thinner in a waste oil drum. The Navy sells uncontaminated  waste  oil  for  a  profit.  If  only  minor amounts  of  any  other  substance  are  present  in  the waste oil, the Navy must pay high prices for analysis and  disposal.  The  best  disposal  method  is  for  you  to properly label the materials and return them, unmixed, to the supply department. Clearly label each container, preferably   with   the   BM   line   item   or   other   supply tracking  documentation.  It  is  always  best  for  you  to check with the battalion MLO staff or safety office for proper  disposal  procedures. MATERIAL SAFETY DATA SHEET Many   different   materials   are   used   in   the workplace  throughout  the  Navy,  most  of  which  are hazardous.   A   key   to   the   NAVOSH   program   is informing   workers   about   these   hazards   and   the measures necessary to control hazardous materials. To 1-24