Description
TLIS0004 Measure and mark track for resurfacing.
The TLIS0004 RTO Training Materials for this unit cover the skills and knowledge required to measure and mark track for resurfacing operations in compliance with rail network standards, safeworking and regulatory requirements, and workplace procedures. It includes identifying and marking track obstructions, utilizing appropriate measurement tools to measure the range of geometry elements, calculating, recording, and marking data for resurfacing operations, as well as documenting and reporting outcomes.
Individuals who attain competence in this unit must satisfy the state/territory legislated rail safety prerequisites and comply with applicable codes of practice and guidelines.
This task is accomplished under minimal supervision, usually within a team setting. It involves applying standard operational principles and procedures when measuring and marking track for resurfacing in various operational contexts.
Training and Assessment Resources for TLIS0004 Measure and mark track for resurfacing, are provided in Microsoft Word format making them easy to contextualise, add images to and edit them to suit your RTO’s requirements. They include:
- TLIS0004 Measure and mark track for resurfacing Learner Assessment
- TLIS0004 Measure and mark track for resurfacing Learner Guide
- TLIS0004 Measure and mark track for resurfacing Assessor Guide
- TLIS0004 Measure and mark track for resurfacing Assessment Mapping
TLIS0004 RTO Training Materials
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Training Materials Excerpt:
What is measurement and marking of track for resurfacing operations?
- Rail track resurfacing is an essential part of rail maintenance and construction to ensure the safe and efficient operation of trains. There are three primary types of track resurfacing: maintenance surfacing, track restoration (associated with ballast cleaning, track reconditioning or reconstruction), and track construction.
- Maintenance surfacing: Regular maintenance surfacing is performed to correct minor track geometry defects and maintain the desired track profile. This process typically involves using specialised machinery, such as tamping machines, to lift the track and pack ballast under the sleepers (or ties), ensuring the track is adequately supported and levelled. Maintenance surfacing helps to address issues like track settlement, rail wear, and small deviations in track alignment, improving ride quality and prolonging the life of the track components.
- Track restoration: Track restoration is a more extensive process that involves restoring the track geometry and structure to its original or intended design, usually due to significant wear, damage, or degradation over time. This type of resurfacing typically includes one or more of the following activities:
- Ballast cleaning: Ballast cleaning involves removing fouled or contaminated ballast from the track bed and replacing it with fresh, clean ballast. This process improves track drainage, provides better support for the track structure, and reduces the risk of track instability.
- Track reconditioning: Track reconditioning involves major repairs or replacement of track components, such as rails, sleepers, and fastenings, to restore the track’s structural integrity and geometry. This process may include rail grinding to remove rail defects, sleeper replacement, or fastening system upgrades.
- Track reconstruction: Track reconstruction involves completely rebuilding a section of track, typically due to severe damage, degradation, or changes in track design standards. This process can involve significant earthworks, subgrade improvements, and the installation of new track components.
- Track construction: Track construction refers to the process of building a new rail track, typically as part of a rail network expansion or the creation of new rail lines. Track construction involves multiple stages, including earthworks and grading, subgrade preparation, installation of drainage systems, laying of sleepers and rails, and ballast placement. Resurfacing during track construction ensures the correct geometry, alignment, and support are achieved, providing a safe and efficient rail infrastructure for train operations.
In summary, rail track resurfacing is crucial for maintaining, restoring, and constructing rail tracks to ensure their safety, performance, and longevity. Each type of resurfacing serves a specific purpose and contributes to the overall integrity and efficiency of the rail network.
Prior to marking track for resurfacing works, various types of measurements using a range of equipment. Track measurement for resurfacing work is essential for ensuring proper track geometry, alignment, and stability. Various parameters need to be measured and monitored during the resurfacing process. Here’s an explanation of these parameters:
- Location of tangent and transition points: Tangent points refer to where a curve begins or ends, and transition points are where the track transitions from a straight section to a curve or vice versa. Identifying these points is crucial for determining track alignment and machine adjustments during the resurfacing process.
- Superelevation increments: Superelevation is the difference in elevation between the two rails on a curve, which helps trains negotiate the curve safely and comfortably. Measuring and maintaining appropriate superelevation increments ensures proper track geometry and train handling.
- Track alignment and machine adjustment values: Track alignment refers to the horizontal and vertical positioning of the rails. Machine adjustment values are the settings on the resurfacing equipment needed to achieve the desired track alignment.
- Machine offsets for lining transitions: Lining transitions occur when the track alignment changes, such as from a curve to a straight section. Machine offsets are the adjustments made to the resurfacing equipment to maintain a smooth and consistent track geometry through these transitions.
- Rail levels and machine adjustment values: Rail levels refer to the vertical position of the rails. Proper rail leveling is essential for maintaining a smooth and stable track surface. Machine adjustment values are the settings on the resurfacing equipment needed to achieve the desired rail levels.
- Track lateral and vertical clearances: These clearances refer to the minimum space required on the sides and above the track to allow trains and equipment to pass safely. Ensuring adequate clearances is critical for preventing collisions and derailments.
- Superelevation and rates of change: This refers to the rate at which the superelevation changes along the track. Measuring and controlling the rate of change is essential for maintaining a comfortable and safe ride for train passengers.
- Rail level: Rail level refers to the vertical position of each rail, which is crucial for ensuring a smooth and stable track surface.
- Track alignment: This refers to the horizontal and vertical positioning of the rails, essential for maintaining proper track geometry and ensuring safe train operation.
- Ballast profile: The ballast profile is the shape and distribution of ballast beneath and around the sleepers. Proper ballast profile is crucial for providing adequate support and stability to the track structure.
- Gauge: Gauge refers to the distance between the inner faces of the two rails. Maintaining the correct gauge is essential for ensuring safe and efficient train operations. Incorrect gauge can cause wheel-rail interaction issues and may lead to derailments.
By monitoring and adjusting these parameters during track resurfacing work, rail maintenance teams can ensure proper track geometry, alignment, and stability, ultimately resulting in safe and efficient rail operations.
TLIS0004 RTO Training Materials
Qualifications that include this unit.
TLI37122 – Certificate III in Rail Infrastructure
Training packages that include this unit
