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A lineman wearing equipment for hot glove work. In electrical engineering, live-line working, also known as hotline maintenance, is the maintenance of electrical equipment, often operating at high voltage, while the equipment is energised.
In 2017, of the $70 billion spent by airlines on maintenance, repair and overhaul (MRO), 31% were for engines, 27% for components, 24% for line maintenance, 10% for modifications and 8% for the airframe; 70% were for mature airliners (Airbus A320 and A330, Boeing 777 and 737NG), 23% were for “sunset” aircraft (McDonnell Douglas MD-80 ...
In 2021, JETMS launched a new line maintenance station located at Nice Côte d’Azur Airport in France. [10] In Sep 2021, JETMS receives new Maintenance Organisation Approval Certificate (MOAC) issued by the United Kingdom Civil Aviation Authority (CAA) to conduct base and line MRO services on Embraer EMB135/145 aircraft. [11]
A line-replaceable unit (LRU [1]), lower line-replaceable unit (LLRU), [citation needed] line-replaceable component (LRC), or line-replaceable item (LRI) [2] is a modular component of an airplane, [3] ship or spacecraft [4] (or any other manufactured device) that is designed to be replaced quickly at an operating location (1st line).
Planned preventive maintenance (PPM), more commonly referred to as simply planned maintenance (PM) or scheduled maintenance, is any variety of scheduled maintenance to an object or item of equipment. Specifically, planned maintenance is a scheduled service visit carried out by a competent and suitable agent, to ensure that an item of equipment ...
High voltage transmission lines can be worked live with proper setups. The lineworker must be isolated from the ground. The lineworker wears special conductive clothing that is connected to the live power line, at which point the line and the lineworker are at the same potential, allowing the lineworker to handle the wire. The lineworker may ...
The subway lines each have one maintenance facility (except for three on the Green Line) and often several other yards used for overnight and midday storage. Tail tracks for temporary storage of trains are also present at Forest Hills (Orange Line) and Wonderland (Blue Line); the Green Line has sidings at Heath Street , Blandford Street , and ...
For a complex engineering system containing thousands of assemblies, sub-assemblies, components, organized into several levels of indenture and with a number of possible repair decisions, LORA seeks to determine an optimal provision of repair and maintenance facilities to minimize overall system life-cycle costs.