Evaluation of Surface Storage Facilities for Explosives, Blasting Agents and Other Explosive Materials

摘要

The purpose of this study was to increase the safety of explosive storage. This was accomplished by (1) review of the histories of recent and past magazine explosions, (2) observation of present explosive storage conditions and practices, (3) examination of existing Federal regulations on explosive storage, and (4) recommendations for safety improvements and revision and clarification (if necessary) of governmental regulations. A recent increase in magazine explosion frequency must be attributed to a large increase in deliberate explosions; fires of various origins account for the remaining explosions of the past decade. During 1884-1926 several lightning-generated explosions occurred in nonmetal magazines. It appears that the contents of a well-constructed metal magazine are immune to direct lightning strikes, regardless of whether the magazine is grounded or not. Grounding a metal magazine cannot be harmful, but it maywell be superfluous. Magazines were observed at 34 widely separated mines and storage problems were discussed with the personnel. In general, storage conditions and practices were found to be satisfactory. Usually, only small quantities of explosives were stored on mine property because most explosives are brought in by suppliers when needed. Mine Safety and Health Administration and Bureau of Alcohol, Tobacco and Firearms standards on explosive storage appear to cover safety aspects adequately. However, certain revisions are recommended to clarify some of the standards and to reduce inconsistencies in their enforcement.