Proposed New Procedure for Estimating Allowable Number of Rounds for Blast Overpressure Hazard Assessment
Abstract
Current procedures for health hazard assessment of weapons blast overpressure use criteria contained in MIL-STD-1474D These criteria are applied to the test data so that the single pressure-time signature which indicates the greatest hazard (worst case round) is used to derive the recommended firing restrictions for the system. This approach is conservative and probably overrestricts the use of the system. Since it is based on the worst case round, the rest of the test data are essentially ignored in the hazard assessment. A procedure to establish recommended firing limits using all of the data has been developed. The procedure is based on accumulating hazards over the test data set until the criterion value is reached. This establishes the allowable number of rounds. A maximum exposure level for the worst case round is retained to prevent injury from single round exposures. Two variations of the basic procedure are explored and numerical examples of each are presented. The procedure implemented using a proportional dose accumulation is recommended.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1997
- Accession Number
- ADA336706
Entities
People
- James H. Patterson Jr.
Organizations
- United States Army Aeromedical Research Lab