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Introduction This Track Work Instruction will help you identify the type of ballast you will be dealing with.
This standard describes a standard practice for grounding contact assignment for detachable power cables on 6 kW, 12 kW and 18 kW metal-halide lamp ballasts used in the motion picture and television industries on portable studio luminaires that use the MIL-C-5015 or MIL-DTL-5015 connectors...
This Standard provides definitions of terms used in ANSI C78 and C82 series Standards for fluorescent lamps and ballasts. Individual Standards may also include additional definitions specific to that Standard.
This standard provides specifications for and operating characteristics of low-frequency square wave electronic ballasts for metal halide lamps. Electronic ballasts are devices that use semiconductors to control lamp starting and operation. The ballasts operate from multiple...
Introduction This Track Work Instruction covers the maintenance of track where ballast depths are less than standard. This is likely to be on bridge decks but can also occur within tunnels, over pipes or arch bridges or where ballast depths required by the standards are unattainable....
Introduction This Track Work Instruction covers how to clean a ballast shoulder. Ballast shoulder cleaning is a useful way of making local improvements to the drainage of the track because poor top can often be traced back to a problem with water trapped within the ballast. If...
Introduction This Track Work Instruction covers ballast cleaning using a Mechanical Ballast Cleaner (MBC) - also known as an Automatic Ballast Cleaner (ABC). See also separate instructions: TWI 2G056 How to Dig a Cutter Bar Trench TWI 3G057 How to Calculate Ballast...
Introduction This Track Work Instruction covers specifically how to top up ballast in S&C. See also separate instructions: TWI 3B007 How to tip ballast from a train TWI 3B016 Regulating ballast by machine
The railway track network plays an essential role in the transportation infrastructure worldwide. A ballasted railroad is commonly used for several reasons, including economic, rapid drainage and ease of maintenance. Given the increasing demand for trains to carry heavier loads, current...
Introduction This Track Work Instruction covers how to plan ballast regulating by machine. This includes on ballast regulators and road/rail vehicles fitted with equipment attached to their jibs. The use of this type of equipment is a valuable resource that eliminates the use of...
1.1 This specification covers dry-cast, manufactured concrete units that are primarily used for ballast applications. These units are machine-made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. Note 1: The design of concrete...
Introduction This Track Work Instruction covers how to assess the condition of ballast using both visual and direct investigations. See also separate instructions: TWI 2B003 How to prepare trial holes TWI 2B008 How to recognise ballast type TWI 3B005 How to recognise & manage...
Introduction This Track Work Instruction covers the excavation of contaminated ballast. See also the separate instruction: TWI 3B001 How to dispose of contaminated ballast
This standard describes the essential design features and operating characteristics of reference ballasts for fluorescent lamps. The items specified are those that have been found necessary to ensure accurate and reproducible results when either lamps or ballasts are being tested. It...
Introduction This Track Work Instruction covers how to decide on the minimum depth of ballast in situations where it is not possible to achieve full depth to Network Rail Company Specifications. See also separate instructions: TWI 3B003 How to understand blanket design TWI 3B010 How to...
Introduction This Track Work Instruction covers how to manually achieve the correct ballast profile on CWR and Jointed track.
1.1 This specification covers dry-cast concrete ballast blocks that are primarily used for ballast of rooftop equipment. These units are machine-made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. Note 1: The design of...
This specification covers dry-cast concrete ballast blocks that are primarily used for ballast of rooftop equipment. These units are machine-made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. NOTE 1-The design of...
1.1 This specification covers dry-cast concrete ballast blocks that are primarily used for ballast of rooftop equipment. These units are machine-made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. Note 1: The design of...
This Standard covers the following equipment for use in metal heads that are in accordance with the latest revision of ANSI C136.6: a. High-intensity discharge lamp ballast and socket assemblies in accordance with Figure 1. b. Mogul and medium multiple incandescent lamp socket and...
