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- An energy quantity of one quadrillion Btu, which is approximately the energy equivalent contained in one trillion cubic feet of natural gas.
- Qualification Test
- An investigation, independent of a procurement action, performed on a product to determine whether or not the product conforms to all requirements of the applicable specification. NOTE: The examination is usually conducted by the agency responsible for the specification, the purchaser, or by a facility approved by the purchaser, at the request of the supplier seeking inclusion of his product on a qualified products list.
- Quick Burst
- The internal pressure required to cause failure of a pipe or fitting due to an internal pressure buildup, usually within 60 to 70 seconds.