Reliability of Explosive Squibs Used in Fire Deluge Systems
Abstract
The purpose of this test and evaluation project was to collect success/failure rate data on 129 explosive actuators, like those used in the Advanced Fire Protection Deluge System (AFPDS), that had been stored for a number of years. The manufacturer specifies a shelf life for the actuators of 10 yr when stored at 68 deg F and 2 yr when stored at 122 deg F. The actuators were stored in a non-climate controlled earth covered magazine structure in which temperature was between 68 deg F and 122 deg F several months every year for up to 8 yr 4 mo. For testing, the actuators were subjected to electrical current above the minimum recommended. All 129 actuators detonated. Results indicate that explosive actuators stored at temperatures between 68 deg F and 122 deg F for up to 8 yr 4 mo have at least 94% reliability. This information can be used in probabilistic risk analysis calculations by organizations with facilities equipped with high-speed explosive suppression and fire extinguishing systems that use these actuators.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 2011
- Accession Number
- ADA555170
Entities
People
- John R. Hawk
Organizations
- Air Force Research Laboratory