Analytical Certification of ARMCO Revetments for Preventing Sympathetic Detonation

ARMCO revetment walls are used as barricades to separate and prevent sympathetic detonation (SD) among munitions. These revetment walls are constructed and located to form modules to protect ordnance handling and aircraft servicing areas. The Naval Facilities Engineering Service Center was tasked by the Department of Defense Explosives Safety Board to determine by analogy and analysis the maximum credible event for which ARMCO revetment modules prevent SD of thin case and robust case munitions. Based on analysis and test results, it is recommended that the maximum net explosive weight (NEW) stored in an ARMCO revetment module with 7 foot thick revetment walls be limited to 18,000 lb when thin case ordnance is located in an adjacent module. The 7 foot thick, sand filled ARMCO revetment wall is required to prevent SD of the worst case missile acceptor. The minimum required size of the storage area is 85 ’ by 50 ’ and a minimum 10 ’ standoff is required between any explosive and a revetment wall. It is recommended that the maximum NEW stored in an ARMCO revetment module with 5.25 foot thick revetment walls be limited to 5,000 lb NEW. The 5.25 foot ARMCO revetment wall will prevent SD of the worst case missile acceptor. This donor maybe placed anywhere in the minimum sized storage area of 85 ’ by 50’. A minimum 10 ’ standoff is required between any explosive and a revetment wall. Report Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information