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Home » Supply Chain and Operations Management Glossary (H)

Supply Chain and Operations Management Glossary (H)

Hectare: A unit of land area, originally French = 2.47 acres = 11954.8 square yards. HEPA: High Efficiency Particulate Air filter. By DOE rules, a dry, disposable filter that removes at least 99.97% of particles that are .3 micrometers in diameter. May be required for production processes that generate hazardous particulate pollution. Hopper car: A railcar for carrying loose material such as grain. It has either an open top or hatches, so that it can be loaded from the top. It typically has a sloped bottom, so that the car can be emptied over a pit by opening slits in the bottom of…

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