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This Standard is intended to cover ballasts which have rated open-circuit voltages of 2000 volts1 or less and are intended to operate lamps at a frequency of 50 Hz or 60 Hz.2 This comprises ballasts for hot-cathode fluorescent lamps, either switch-start (preheat-start), rapid-start...
4.1 The wind resistance of ballasted membrane roof systems is determined largely by the size and weight of the ballast used. ANSI/SPRI RP-4 provides a method for the wind design of ballasted single-ply membrane roof systems and includes specific guidelines for the size...
4.1 The wind resistance of ballasted membrane roof systems is determined largely by the size and weight of the ballasted used. ANSI/SPRI RP-4 provides a method for the wind design of ballasted single-ply membrane roof systems and includes specific guidelines for the size...
The wind resistance of ballasted membrane roof systems is determined largely by the size and weight of the ballasted used. ANSI/SPRI RP-4 provides a method for the wind design of ballasted single-ply membrane roof systems and includes specific guidelines for the size and...
Introduction Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. Purpose. To subject test vehicles to passenger and cargo loading representative of customer...
Introduction In 2008, Congress began the rulemaking process for fluorescent ballasts as required by the Energy Independence and Security Act (EISA) 2007. The rule in effect in 2008 only covered the federally regulated T12 lamp ballasts for 4-foot and 8-foot T12 lamps, and...
This standard provides a methodology for applying existing test methods for program start ballasts to fluorescent dimming ballasts and provides a way to calculate BLE for fluorescent dimming ballasts. NEMA offers this standard to augment and harmonize with the 2014 Department...
Introduction This Track Work Instruction covers the gluing of ballast, sometimes referred to as 'ballast bonding'. Ballast gluing is a technique used to increase the stability of the track at locations where any lateral movement is particularly undesirable. The technique can...
Includes: Regulating ballast using OTMs, RRVs Excludes: Regulating ballast by hand
Includes: Regulating ballast by hand Excludes: Regulating ballast using OTMs, RRVs
Includes: Removal of ballast shoulder contaminated with oil, effluent and fines. Excludes: Ballast contaminated with hazardous chemicals or asbestos
This European Standard specifies the properties of aggregates obtained by processing natural, manufactured or recycled crushed unbound aggregates for use in construction of the upper layer of railway track. For the purposes of this standard, the aggregate is referred to as railway ballast. A...
Includes: Auto-ballasters, Hoppers Excludes: RRVs
Introduction This Track Work Instruction covers the ordering of track ballast for lifting purposes
This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of Ballast water management systems (BWMS). This CP does not set the design requirements to the Ballast water management systems. TA is based on...
Introduction This Track Work Instruction covers how to plan the ballast regulating of a length of track and/or a route. See also separate instructions: TWI 2B004 How to regulate ballast by hand TWI 3B007 How to tip from a train TWI 3B008 How to order ballast TWI 3B014 How to...
This Standard specifies test procedures and performance requirements for the efficacy of fluorescent lamp ballasts for use in fluorescent luminaires to be installed in industrial, commercial, or residential locations. This Standard applies to ballasts intended to operate at a line...
