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Explorer
PFMEA is an abbreviation for a specific FMEA. The abbreviation may stand for:
- Potential Failure Mode and Effect Analysis (used in Six Sigma)
- Product Failure Mode and Effect Analysis
- Process Failure Mode and Effect Analysis
New Austrian Tunneling Method. a tunnelling method.
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Smoke composed by carbon particles in suspension, proceeding of diesel engines.
Blocks of wood or concrete installed between the lagging or steel sets or collar bracing and the rock surfaces of a tunnel to transfer stress to the support.
Concrete placing equipment incorporating a pressure vessel with sealing door or valve. Concrete is moved from the vessel to point of placement through the placing pipe by the introduction of compressed air into the vessel.
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Bar, usually made of steel, used for the stabilization of rock. Placed into a drilled hole and anchored in the rock at the end (end anchorage) or along its whole length (grouted bolt). The visible extremity is often fitted with a plate.
A crew of miners that is switched from one heading to another in a doubleheading location; has the advantage of keeping drilling and mucking operations continuous with one crew of men for each operation.
Different proposals studied in the project phase.
Explosive. A mixture of ammonium nitrate prills and a carbonizing agent.