Fire and Thermal Effects of HD 1.3 Accidents: History, Research, and Analysis
Abstract
The DoD 6055.9 Quantity-Distance requirements for Hazard Division 1.3 (HD 1.3) materials are based upon the total mass of materials present in a storage location. The QD itself is determined using the cube root of the mass. This approach is reasonable when the hazard results from a very rapid event where the primary hazards are volumetric in nature (pressure, shock). Accidents of HD 1.3 materials can evolve over many minutes and depending upon the initiating event and storage methods used, may or may not have any potential to involve all material being stored in a location. Additionally as events that evolve slowly in time (as compared to a detonation) the primary hazards are not shock related, but rather thermal effects which scales over distance with a one-half power. A proper assessment of the hazards posed by a large component of HD 1.3 material, should reflect damage mechanisms and time scales associated with large quantities HD 1.3 materials. The authors propose an alternate approach to the simple QD relationships in DoD 6055.9 that involves determining credible failure mechanisms resulting in the ignition of HD 1.3 material, analyzing the progression of the accident in time, and finally determining the consequence of the event. Consequences of the event include casualties to personnel, damage to facilities, and interruption of facility activities or loss of mission capability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2010
- Accession Number
- ADA532129
Entities
People
- Craig Beyler
- Jason Floyd