P-385-63 Range Safety Pamphlet Download

target. To train for this type of mission, individuals may be required to be closer to the detonation than authorized by this pamphlet in paragraph 15–12. Such operations will require a deviation in accordance with chapter 1 of this pamphlet. 15–2. Firing devices a. Electrical firing will be used with caution and will be replaced by non-electric firing systems when the possibility exists of unintentional detonation from extraneous electrical energy sources (for example power transmission lines, cellular telephones, generators, radios, or any weather conditions which produce static electricity or lightning). Electric blasting circuits must be checked for stray electromagnetic energy by using a test set. Test sets will not detect non- transmitting portable equipment that may be in the vicinity. Therefore, total reliance must not be placed on these detection methods to ensure the safety of personnel. Areas selected for demolition training sites will be surveyed for electromagnetic energy. This survey is an installation responsibility. Areas will be controlled to prevent entry of portable transmitting equipment from the surrounding area. The data in tables 15–4, 15–5, and 15–6 showing transmitter and radiative power in watts and minimum separation distances to electric blasting operation apply to operation of a radio, radar, and television transmitting equipment. b. Electric firing will not be used for demolition training when surveys show that the transmitted field strength exceeds energy levels shown in tables 15–4, 15–5, and 15–6. c. Static electricity will be eliminated or non-electric firing systems will be used. d. Approved firing devices (for example, M1, M1A1, M3, M5, M122, XM122, M142, and M152) employed in accordance with Army and Marine Corps FMs and TMs are authorized for use with practice mines. Since these firing devices can be configured with practice and HE activators, care must be taken to ensure the proper activator is assembled to the proper mine. HE activators will not be used with training mines. e. A dual electric disconnect system will be used when installing electrical firing systems on demolitions. The main source of power will be turned off and a lockout device will be used. 15–3. Shaped charges a. Shaped charges will be oriented so that gas jets will be directed toward the target. When practicable, charges should be placed on the side of the target nearest to observers, so that the blast is directed away from them. Observers will be at least 100 m away in a missile-proof shelter, 275 m in defilade, or 1,000 m for unprotected personnel, from shaped charges when fired. b. For the Army, all personnel will wear approved protective helmets, IBA, eye protection, and single hearing protection. For the Marine Corps, PPE Level 1. c. The MK47 Mod 1 demolition shaped charge requires a safe separation distance of 300 m for protected personnel. For unprotected personnel, the stand-off distance is 1,610 m. 15–4. Bangalore torpedoes a. Bangalore torpedoes will only be fired while on the ground in a horizontal position. Personnel will be in a missile-proof shelter 100 m from the charge, or 200 m away in defilade. For unprotected personnel in the open, the minimum safe distance (MSD) is 1,000 m at right angles to axis of the Bangalore torpedo, 200 m for personnel in the line of axis. If an improvised Bangalore torpedo, in which the explosive weight exceeds the standard, is used against a steel target, fragments (missiles) could be produced which may fly further than the MSD. In that case, the SDZ for steel cutting charges should be used, otherwise, the SDZ for a standard Bangalore torpedo may be used for an improvised Bangalore torpedo. This SDZ must be approved by the installation RMA (Army), RCO (Marine Corps). b. For the Army, all personnel will wear approved protective helmets, IBA, eye protection, and single hearing protection. For the Marine Corps, PPE Level 1. 15–5. Mine-clearing line charge a. Firing conditions. (1) Because of high exhaust temperatures, the mine-clearing line charge will not be towed behind an M1 Abrams tank. (2) Non-participating personnel will not be allowed within the mine-clearing line charge SDZ or noise hazard contour during firing. (3) Only participating personnel are allowed within Area F. Such personnel will be in an armored vehicle in a button-up mode with approved single hearing protection. (4) The M68 inert charge should not be fired more than three times as additional firings may result in breakage of charge blocks and erratic flight of the rocket. Units will record number of firings in accordance with unit SOP. (5) When firing the M154 Kit, all amphibious assault vehicle hatches will be closed (Marine Corps). b. Surface danger zone. (1) SDZ requirements for firing the mine-clearing line charge with M58 HE charge are provided in figure 15–1. 185 DA PAM 385–63 • 16 April 2014