However, cases of flooding, collision, grounding, explosion, or fire are investigated and reported regardless of the cost involved. One exception is small trash fires or similar fires involving no personnel injuries and material damage limited to the container in which the fire originated. 3. Explosive Mishaps Supplement Report DD-MIL(AR)   1020   (5102)—Used   to   report mishaps, incidents, and malfunctions (collectively referred to as explosive mishaps) involving non- nuclear explosives, explosive ordnance, chemical agents, and systems. This report is submitted as a supplement to the Material (Property) Damage Mishap Report, OPNAV 5102-2; it represents an extension of the cause factors section of that report. 4.  Motor  Vehicle  Mishap  Report,  OPNAV 5102-4—Used to report a motor vehicle mishap involving a government motor vehicle or private motor vehicle (on Navy property) if it results in the following: a. An injury or a death of any occupant or nonoccupant of the motor vehicle involved or property  damage  of   ||content|| ,000  or  more.  Damage should  include  damage  to  all  motor  vehicles involved, their contents, and all other government or private property. b. A motor vehicle mishap not on Navy property involving a private motor vehicle and resulting in injury or death to Navy military or civilian personnel. A mishap involving Navy civilian personnel requires a report only when the  injury  occurs  because  of  or  during  the performance of job-related duties. Travel to and from work does not meet, the criterion for such a report. 5.  SAFETYGRAM,  OPNAV  5102/4  (fig. 8-1)—Used to describe any situation that has mishap-causing potential or to make recommen- dations to improve safety. That includes near mishap  and  hazardous  conditions  which,  if allowed to go unchecked or uncorrected, could cause a mishap. When submitting a Material (Property) Damage Report, OPNAV 5102-2, you may also use an unofficial correspondence SAFETYGRAM to report these situations. Certain  categories  of  mishaps  require  the submission of special reports. These special reports  are  specifically  excluded  from  the reporting requirements of OPNAVINST 5102.1C. These categories and their corresponding reporting instructions are as follows: 1. Damage, injuries, or death as a direct result of hostile action. Special  Incident Reporting,  OPNAVINST  3100.6E. 2. 3. Nuclear weapons mishaps/incidents. OP- NAVINST 3100.6E and Procedures of Joint Reporting Structure,  JCS Publication 6. Mishaps associated with naval nuclear pro- pulsion plants. Procedures and Reporting Requirements for Nuclear and Radiological Accidents, OPNAVINST 3040.5B and OP- NAVINST  3100.6E. Other special cases may require more than one type of report under separate instructions. An example of such a case is an aircraft mishap or a fire at a naval shore activity. The  Naval Aviation Safety Program, OPNAVINST 3750.6P, provides  for  the  reporting  of  crew  members, passengers,  and  other  persons  (nonoccupants) injured or killed in an aircraft mishap. Damage to naval aircraft is also reported. However, when an aircraft mishap causes material damage to a ship or shore activity, except for aviation facilities in the flight deck or runway areas, a material property damage report is submitted. The ship or shore activity submits the report. The report details the damage sustained, the damage control and fire-fighting procedures used, and the equip- ment used to control or limit the damage. Fires at naval shore activities are reported using the Standard Organization and Regulations of the U.S. Navy (SORN). However, all injuries or deaths associated with these fires are reported following OPNAVINST 5102.1C. When explosives are involved in either of these special cases, the additional  reports  required  by  OPNAVINST 5102.1C. will be submitted. PREPARING THE REPORT The final part of the investigation is your report  containing  your  recommendations  to eliminate or control the causal factors in the mishap. Your report will contain any or all of completed OPNAV Forms 5102/1, 5102/2, or 5102/3.  Appendix  II  of  NAVSAFECEN  5102/29, Handbook for the Conduct of Forces Afloat Safety Investigations, contains checklists for use in the investigation of the most common types of mishaps. Your report should provide a word picture of the  entire  mishap.    It should be a detailed, concise account rather than a brief report of the incident. When you complete your report, forward  it  to  the  commanding  officer  for signature; then forward the report to the Naval Safety Center. MISHAP PREVENTION A mishap is always unplanned by the person whom it affects; otherwise, the mishap would not 8-5