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Questions and Answers
What is the recommended average illuminance range for a marshalling yard?
What is the recommended average illuminance range for a marshalling yard?
Which area requires special attention for lighting to ensure clear visibility in both directions?
Which area requires special attention for lighting to ensure clear visibility in both directions?
What is the recommended vertical plane illuminance value for operations in the hump area?
What is the recommended vertical plane illuminance value for operations in the hump area?
What is a critical feature of the lighting in a marshalling yard concerning the railway tracks?
What is a critical feature of the lighting in a marshalling yard concerning the railway tracks?
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Which type of light installation is deemed most appropriate for achieving the necessary illuminance in the vertical plane?
Which type of light installation is deemed most appropriate for achieving the necessary illuminance in the vertical plane?
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What is a major benefit of gleaming tracks illuminated by the lighting systems in marshalling yards?
What is a major benefit of gleaming tracks illuminated by the lighting systems in marshalling yards?
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Which aspect of illumination engineering is crucial for the performance of lighting systems in marshalling yards?
Which aspect of illumination engineering is crucial for the performance of lighting systems in marshalling yards?
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What is the maximum ambient air temperature that the equipment is designed to operate under?
What is the maximum ambient air temperature that the equipment is designed to operate under?
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What is the average horizontal illuminance level required on the surface level of the marshalling yard?
What is the average horizontal illuminance level required on the surface level of the marshalling yard?
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What is the minimum uniformity ratio of illuminance that must be maintained in the hump area of the marshalling yard?
What is the minimum uniformity ratio of illuminance that must be maintained in the hump area of the marshalling yard?
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What is one of the main objectives of marshalling yard lighting?
What is one of the main objectives of marshalling yard lighting?
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What should be avoided to prevent glare for the shunting staff?
What should be avoided to prevent glare for the shunting staff?
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What is a major advantage of high tower installations?
What is a major advantage of high tower installations?
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What is one of the disadvantages of high tower lighting systems in proximity to airports?
What is one of the disadvantages of high tower lighting systems in proximity to airports?
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Which light sources are mentioned as suitable for high tower installations?
Which light sources are mentioned as suitable for high tower installations?
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What design characteristic of floodlight luminaires contributes to better light distribution?
What design characteristic of floodlight luminaires contributes to better light distribution?
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What is emphasized about the reliability of high tower lighting systems?
What is emphasized about the reliability of high tower lighting systems?
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Why is maintenance facilitated in high tower lighting systems?
Why is maintenance facilitated in high tower lighting systems?
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Which of the following is NOT a characteristic of high tower lighting systems?
Which of the following is NOT a characteristic of high tower lighting systems?
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What feature of high tower lighting contributes to reducing glare?
What feature of high tower lighting contributes to reducing glare?
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What type of luminaires should be used for marshalling yard lighting?
What type of luminaires should be used for marshalling yard lighting?
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What material should the housing of the luminaires be made of to withstand seasonal weather conditions?
What material should the housing of the luminaires be made of to withstand seasonal weather conditions?
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What feature is essential for the luminaires to ensure they are weatherproof?
What feature is essential for the luminaires to ensure they are weatherproof?
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Which method is suggested to achieve desired illuminance without incurring wasteful expenditure?
Which method is suggested to achieve desired illuminance without incurring wasteful expenditure?
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What is an important consideration when siting towers or poles for luminaires?
What is an important consideration when siting towers or poles for luminaires?
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Which maintenance issue may arise with luminaires installed at greater heights?
Which maintenance issue may arise with luminaires installed at greater heights?
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What type of glass should be used for the luminaires to provide heat resistance?
What type of glass should be used for the luminaires to provide heat resistance?
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Which aspects need to be optimized for the electrical accessories used with the luminaires?
Which aspects need to be optimized for the electrical accessories used with the luminaires?
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What is the recommended maximum height for climbing towers using the structure itself?
What is the recommended maximum height for climbing towers using the structure itself?
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What is the benefit of using 'Night Time Visual Method' or 'Daylight Aiming Methods' in floodlight aiming?
What is the benefit of using 'Night Time Visual Method' or 'Daylight Aiming Methods' in floodlight aiming?
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For achieving glare-free lighting in a marshalling yard, what must be achieved in addition to illuminance?
For achieving glare-free lighting in a marshalling yard, what must be achieved in addition to illuminance?
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What is the primary benefit of using a group replacement scheme for luminaires?
What is the primary benefit of using a group replacement scheme for luminaires?
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Which of the following is an advantage of a distributed lighting system?
Which of the following is an advantage of a distributed lighting system?
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What is a major disadvantage of gantry lighting?
What is a major disadvantage of gantry lighting?
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Why is maintenance challenging in a distributed lighting system?
Why is maintenance challenging in a distributed lighting system?
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What is critical for ensuring visibility and sighting of signals in lighting systems?
What is critical for ensuring visibility and sighting of signals in lighting systems?
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In the context of marshalling yard lighting, what does a mixed practice refer to?
In the context of marshalling yard lighting, what does a mixed practice refer to?
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What factor is NOT considered when selecting a lighting system for the marshalling yard?
What factor is NOT considered when selecting a lighting system for the marshalling yard?
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What common maintenance practice is recommended for luminaires near the sea?
What common maintenance practice is recommended for luminaires near the sea?
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Which statement best describes the lighting objectives for a yard?
Which statement best describes the lighting objectives for a yard?
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What is a notable characteristic of luminaires in Indian Railways yards?
What is a notable characteristic of luminaires in Indian Railways yards?
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Which statement accurately describes the primary advantage of the group replacement scheme for luminaires in a marshalling yard?
Which statement accurately describes the primary advantage of the group replacement scheme for luminaires in a marshalling yard?
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What is a significant disadvantage of a distributed lighting system in a marshalling yard?
What is a significant disadvantage of a distributed lighting system in a marshalling yard?
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In which aspect does gantry lighting primarily excel compared to other forms of yard lighting?
In which aspect does gantry lighting primarily excel compared to other forms of yard lighting?
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Which of the following factors is NOT considered when determining the appropriate lighting system for a marshalling yard?
Which of the following factors is NOT considered when determining the appropriate lighting system for a marshalling yard?
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What maintenance requirement is specifically recommended for luminaires positioned in marshalling yards close to the sea?
What maintenance requirement is specifically recommended for luminaires positioned in marshalling yards close to the sea?
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What is the main function of a marshalling yard in railway operations?
What is the main function of a marshalling yard in railway operations?
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How does a flat marshalling yard differ from a hump marshalling yard in operation?
How does a flat marshalling yard differ from a hump marshalling yard in operation?
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Which of the following best describes the mechanism of shunting in a flat marshalling yard?
Which of the following best describes the mechanism of shunting in a flat marshalling yard?
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During the operation of a hump marshalling yard, how are wagons uncoupled?
During the operation of a hump marshalling yard, how are wagons uncoupled?
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What operational feature is most critical in modern marshalling yards for directing wagons?
What operational feature is most critical in modern marshalling yards for directing wagons?
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What potential problem arises when wagons gather too much speed in a hump marshalling yard?
What potential problem arises when wagons gather too much speed in a hump marshalling yard?
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What is the critical role of a braking bridge in the context of a hump marshalling yard?
What is the critical role of a braking bridge in the context of a hump marshalling yard?
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What is the primary purpose of using anodised aluminium in the construction of reflectors?
What is the primary purpose of using anodised aluminium in the construction of reflectors?
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Which method is employed to achieve accurate results of illuminance in floodlight aiming?
Which method is employed to achieve accurate results of illuminance in floodlight aiming?
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What is a critical factor when considering installation sites for towers or poles?
What is a critical factor when considering installation sites for towers or poles?
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What problem may arise with luminaires installed at heights exceeding approximately 30 meters?
What problem may arise with luminaires installed at heights exceeding approximately 30 meters?
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What is the purpose of the polychloroprene gasket in luminaires?
What is the purpose of the polychloroprene gasket in luminaires?
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Which devices are used to set the horizontal and vertical angles of floodlight luminaires?
Which devices are used to set the horizontal and vertical angles of floodlight luminaires?
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What is one of the main challenges associated with higher mounting heights of luminaires?
What is one of the main challenges associated with higher mounting heights of luminaires?
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Which characteristic of the luminaires contributes to safety requirements?
Which characteristic of the luminaires contributes to safety requirements?
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What does achieving the desired uniformity ratio in illuminance ensure?
What does achieving the desired uniformity ratio in illuminance ensure?
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Why is it advisable to prepare a detailed aiming diagram?
Why is it advisable to prepare a detailed aiming diagram?
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What is a primary advantage of utilizing high tower lighting systems?
What is a primary advantage of utilizing high tower lighting systems?
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Which characteristic of high tower installations helps in minimizing shadows?
Which characteristic of high tower installations helps in minimizing shadows?
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What is a significant disadvantage related to the use of high tower lighting systems near airports?
What is a significant disadvantage related to the use of high tower lighting systems near airports?
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Which light sources are key to high tower lighting systems in providing effective illumination?
Which light sources are key to high tower lighting systems in providing effective illumination?
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What feature of floodlight luminaires contributes to achieving narrow beam light distribution?
What feature of floodlight luminaires contributes to achieving narrow beam light distribution?
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Which condition is likely to impede access to floodlight projectors in high tower systems?
Which condition is likely to impede access to floodlight projectors in high tower systems?
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How does the design of high tower lighting systems impact maintenance efforts?
How does the design of high tower lighting systems impact maintenance efforts?
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What kind of luminaires should be specifically used for marshalling yard lighting?
What kind of luminaires should be specifically used for marshalling yard lighting?
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Which factor is NOT considered when analyzing the requirements of a high tower lighting installation?
Which factor is NOT considered when analyzing the requirements of a high tower lighting installation?
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What is a critical characteristic of the optical design in luminaires for high tower lighting?
What is a critical characteristic of the optical design in luminaires for high tower lighting?
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What primary role does the gleaming track serve in a marshalling yard?
What primary role does the gleaming track serve in a marshalling yard?
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In the hump area, which specific aspect of lighting is crucial for aiding in the identification of wagon markings?
In the hump area, which specific aspect of lighting is crucial for aiding in the identification of wagon markings?
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What general characteristic should be adhered to when designing increased lighting systems in various types of marshalling yards?
What general characteristic should be adhered to when designing increased lighting systems in various types of marshalling yards?
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What is a key design consideration to avoid glare in the hump area operations?
What is a key design consideration to avoid glare in the hump area operations?
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What aspect of lighting in the marshalling yard contributes to operational efficiency?
What aspect of lighting in the marshalling yard contributes to operational efficiency?
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Which lighting strategy is recommended for a marshalling yard to minimize the risk of theft?
Which lighting strategy is recommended for a marshalling yard to minimize the risk of theft?
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What type of floodlight is most suitable for achieving required vertical plane illuminance values in the hump area?
What type of floodlight is most suitable for achieving required vertical plane illuminance values in the hump area?
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What unique feature of railway tracks illuminated in marshalling yards helps indicate obstacles?
What unique feature of railway tracks illuminated in marshalling yards helps indicate obstacles?
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When considering the installation of luminaires, what material characteristic is imperative for weatherproof durability?
When considering the installation of luminaires, what material characteristic is imperative for weatherproof durability?
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Study Notes
Marshalling Yard Lighting
- Marshalling yards are large areas with many tracks and junctions.
- Effective lighting is crucial for safe and efficient work in the dark.
- Two types of marshalling yards exist: flat switching and hump switching.
- Flat switching involves pushing wagons using a shunting engine that repeatedly accelerates and brakes.
- Hump switching involves using a hump to move wagons down tracks by their own weight.
- Modern marshalling yards have cabins with operation panels indicating wagon movement.
- Braking bridges are often used on hump yards to control wagon speed.
Visual Tasks and Illuminance
- Key work areas in marshalling yards need focused lighting, including hump tops, braking bridges, and switch areas.
- Adequate glare-free general lighting is essential for safety and productivity.
- Recommended average illuminance range is 10-20 lux.
- Brightly illuminated rails provide clear contrast with surroundings for better visibility.
System of Marshalling Yard Lighting
- Several lighting system types are used based on yard size and complexity.
- Common types include high tower, distributed, and gantry lighting.
- No single best system applies, the specific needs of a yard help determine its lighting solution.
Design Criteria
- Lighting performance requires quantitative and qualitative aspects.
- Choice of luminaires, light sources, aiming, maintenance, and specifications are important facets of designing a marshalling yard lighting system.
Specifications for Marshalling Yard Lighting System
- System operation must withstand varying weather conditions, including temperature and humidity.
- Essential functions include train shunting, personnel safety, and security.
- Illumination design must ensure visibility (horizontal and vertical) across the yard, with proper uniformity levels across the yard itself.
- Proper glare control should be included in design.
Lighting of Areas Other Than Marshalling Yards
- Platform lighting is crucial for passenger safety and comfort on stations of all sizes.
- Modern lighting fixtures allow good illumination from multiple points and provide good uniformity and limited shadowing.
- Goods depots require lighting for loading, unloading, switch operations, and safety.
- Locomotives yards require adequate lighting to maintain and service locomotives.
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Description
This quiz covers the importance of effective lighting in marshalling yards. It delves into the two types of marshalling yards, flat switching and hump switching, and discusses key lighting requirements for safe operations. Understanding the illuminance levels and areas requiring focused lighting is crucial for enhancing safety and productivity.
