Glossary of Terms
Practical maintenance terms, CMMS language, reliability abbreviations, and plant maintenance definitions in one place.
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399 terms shown
Infrared Thermography
Infrared thermography is the use of thermal imaging to identify temperature patterns that may indicate electrical, mechanical, insulation, process, or heat-transfer problems.
Inherent Availability
Inherent availability is the theoretical availability of a repairable asset based on failure frequency and active corrective repair time, excluding planned maintenance and support delays.
Inspection and Test Plan
An Inspection and Test Plan defines the inspections, tests, acceptance criteria, responsibilities, records, and control points required during work.
Inspection Checklist
An inspection checklist is a structured set of checks, readings, questions, and acceptance criteria used to examine equipment or conditions consistently.
Installation Qualification
Installation Qualification documents that equipment or a system is installed correctly according to approved design, specification, and manufacturer requirements.
Instrument Loop Check
An instrument loop check verifies the installation, wiring, configuration, direction, indication, alarm, and final response of an instrumentation loop.
Insulation Resistance Test
An insulation resistance test applies a controlled direct-current voltage to assess the resistance of electrical insulation.
Interlock
An interlock is a control condition that prevents or changes equipment operation unless defined safety, process, or sequence requirements are satisfied.
Inventory Adjustment
An inventory adjustment is an authorized transaction correcting recorded stock quantity, value, status, or location after a verified discrepancy.
Inventory Bin Location
An inventory bin location is the specific physical storage position used to find and control a spare part within a maintenance store.
Inventory Carrying Cost
Inventory carrying cost is the annual cost of holding spare-parts inventory, including capital, storage, insurance, handling, deterioration, and obsolescence.
Inventory Cycle Counting
Inventory cycle counting is the regular verification of selected stock items so inventory accuracy can be maintained without waiting for a full annual count.
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