Glossary of Terms
Practical maintenance terms, CMMS language, reliability abbreviations, and plant maintenance definitions in one place.
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399 terms shown
Labor Utilization
Labor utilization is the percentage of available maintenance labor time allocated to defined work or activity categories.
Laser Alignment
Laser alignment is a shaft-alignment method using optical measurement devices to calculate and guide machine-position corrections.
Layer of Protection Analysis
Layer of Protection Analysis is a semi-quantitative method used to evaluate whether independent protection layers provide sufficient risk reduction for a hazardous scenario.
Life Cycle Cost
Life Cycle Cost is the total cost of acquiring, operating, maintaining, improving, and disposing of an asset over its useful life.
Lifting Equipment Inspection
Lifting equipment inspection verifies the condition, identification, capacity, protection, and continued suitability of equipment used to lift or suspend loads.
Line Breaking Permit
A line breaking permit controls the opening, disconnection, or disturbance of piping and equipment that may contain pressure, chemicals, steam, gas, or hazardous material.
Line Efficiency
Line efficiency compares actual production output or productive time with the expected output or available production capacity of a line.
Liquid Penetrant Testing
Liquid penetrant testing detects surface-breaking defects in nonporous materials using a visible or fluorescent penetrant.
Lockout Tagout
Lockout tagout, or LOTO, is a controlled process used to isolate hazardous energy and prevent unexpected equipment startup or energy release during work.
Loop Calibration
Loop calibration verifies the measurement and output performance of an instrument loop from the sensing point through signal transmission to indication or control.
Lot-Controlled Spare Part
A lot-controlled spare part is inventory tracked by batch or lot so manufacturing source, receipt, expiry, inspection, and usage remain traceable.
Lubrication Management
Lubrication management is the controlled selection, storage, handling, application, inspection, and monitoring of lubricants used in equipment.
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