or  shipyard,  an  appropriate  work  request  must  be submitted using the  Ships’  Maintenance  and  Material Management  (3-M)  Manual,  OPNAVINST  4790.4. HAZARDOUS  MATERIAL  STORAGE Certain   materials   with   inherent   hazardous properties   require   special   stowage   facilities   and handling  precautions. Afloat  hazardous  material stowage  is  more  restrictive  than  shore  requirements  for damage control purposes. Storage requirements for each type of material are provided in OPNAVINST 5100.19, chapters C23 and D15, on the Material Safety Data Sheet (MSDS), and in NAVSUP Publication 573. MSDSs are available on the Hazardous Material Information   System   (HMIS),   which   replaced   the Consolidated  Hazardous  Item  List  (CHIL).  The  HMIS is  distributed  on  compact  disk-read  only  memory (CD-ROM) format only. The HMIS in compact disk (CD) format contains both the DOD 6050.5L and DOD 6050.5LR. The CD format is issued quarterly. Each issue contains updates in its entirety. The  HMIS  provides  the  users  the  information needed  to  properly  manage  hazardous  materials.  ‘The system provides Material Safety Data Sheets (MSDSs) for standard stock numbered items, and a wide range of information  concerning  safety,  health,  packaging,  and labeling.  The  HMIS  gives  a  Hazard  Characteristic Code (HCC) for each item, which defines the storage requirements.  The  HMIS  also  lists  the  transportation information  and  disposal  code  for  each  item.  The disposal  code  indicates  the  pretreatment  method  and ultimate disposal action prescribed for spilled, spoiled, or other waste quantities of the item to which it applies. The  HMIS  does  not  contain  information  for  items procured through open purchase. The Ships Hazardous Material List (SHML) is a record  of  the  hazardous  material  (HM)  carried  aboard U.S.   Navy   ships   for   which   there   exists   a   valid requirement.  The  SHML  provides  ships  with  the capability  of  determining  which  hazardous  materials are authorized for shipboard use to preclude stocking of materials for which the ship has no use. Materials which do not appear on the SHML should be suspect of being in excess and should not be ordered. A SHML Feedback Report can be submitted to add items to the SHML  if  a  valid  requirement  exists.  Quantities  of materials are not provided in the SHML, nor is the SHML to be used as specific to a ship or ship class. The SHML is a list of HM that any ship with a valid need is authorized to have on board. The Material Safety Data Sheet (MSDS) in the HMIS will state in the first section whether or not the item is authorized by the SHML. NOTE:   The   SHML   in   CD   format   has   been incorporated into the Hazardous Material Control and Management Program (HMC&M). The HMC&M in CD format contains the SHML, HMIS, and Hazardous Material  User’s  Guide  (I-MUG). To  report  SHML  inconsistencies  or  new  products, use the feedback report, NAVSUP Form 1400. This form  is  included  in  the  SHML  on  the  CD  and  an example is illustrated in chapter 2 of NAVSUP P-485. If the item to be reported has an assigned national stock number (NSN) and application data, but not listed in SHML, submit the report directly to Naval Inventory Control   Point-Mechanicsburg   (NAVICP-MECH). This type of report does not require the commanding officer’s  (CO’s)  approval.  Send  an  info  copy  of  the report  to  the  applicable  type  commander  (TYCOM). The report for items that do not have assigned NSNS or application data and not listed in the SHML will require  the  CO’s  approval.  The  report  must  be  signed by the CO and submitted to NAVICP-MECH via the TYCOM. When procuring nonstandard HM, the request must include  a  copy  of  the  approved  SHML  Feedback Report. The approved report will serve as required certification to procure the nonstandard HM that is not listed in the SHML. SHIPBOARD HAZARDOUS MATERIAL STOWAGE Shipboard stowage facilities commonly used for hazardous   items   are   discussed   in   the   following paragraphs. NOTE:   FOR   THE   HAZARD   CHAR- ACTERISTIC CODES (HCC’S) OR SMCC’S FOR   THE   FOLLOWING   ITEMS,   SEE OPNAVINST  5100.19,  APPENDIX  B3-E. FLAMMABLE LIQUIDS STOREROOMS The  flammable  liquids  storeroom  is  normally located at either end of the ship, below the full-load waterline, not adjacent to a magazine, and is equipped with an automatic fire alarm and fire extinguishing system.  This  type  of  storeroom  should  also  be  equipped with incandescent and explosion-proof overhead lights (protected by lamp guards), with the switch located outside  the  compartment,  and  nonsparking  vent  fans 2-14