Track intervention using a Self-Propelled JackingTamper

Client:

Track Intervention Through Collaboration

KGJ Price Railway Contractors worked collaboratively with GOS Engineering and project stakeholders to deliver a targeted track intervention using a Self-Propelled Jacking Tamper (SPJT). The solution was developed to address site-specific constraints while improving safety, efficiency, and track quality.

Contract: Track intervention using a Self-Propelled Jacking Tamper (SPJT)

Project Background

The works required a precise and proportionate solution to address localised track geometry issues within a short possession window and restricted access environment. Traditional tamping methods were considered unsuitable due to the scale of intervention required and the need to minimise time spent on or near the line.

To ensure the safest and most efficient outcome, KGJ Price engaged early with the client and supply chain during the pre-construction stage, working collaboratively to develop a robust, deliverable plan that balanced safety, programme, and performance.

Pre-Construction Collaboration

A key success factor was early contractor involvement, where KGJ Price worked closely with the client, design engineers, manufacturing specialists, and health and safety representatives to:

Assess site constraints and access limitations
Identify opportunities to reduce workforce exposure
Select proportionate plant and methods for the task
Ensure the solution aligned with safe system of work requirements
Ensure high standards of track quality were maintained

This collaborative approach ensured the SPJT methodology was fully understood, agreed, and ready for safe deployment before arriving on site.

Solution Delivered

The SPJT provided a controlled, mechanical tamping solution that allowed the team to lift and slue track alignment safely and accurately without the need for large on-track plant.

Manufactured by GOS Engineering and deployed by KGJ Price’s experienced delivery team, the SPJT was selected specifically to:

Reduce manual handling & HAVS risks
Minimise workforce numbers on track
Improve quality of tamping operations
Enable efficient delivery within limited possession time

Safety & Operational Benefits

The use of the Self-Propelled Jacking Tamper delivered clear safety and operational advantages:

Reduced time spent on or near the line
Lower workforce exposure during tamping activites
Improved ergonomics compared to traditional manual methods
Proportionate plant selection aligned to scope of works

From a delivery perspective, the approach supported efficient setup and breakdown, contributing to a smoother programme and confident track handback process.

Project Outcomes

Works completed safely within the available possession
Improved control and precision during track geometry adjustment
Reduced disruption through targeted intervention
Strong collaboration between contractor, manufacturer, design, and safety teams

For the client, this meant greater confidence in delivery, improved safety outcomes, and a practical solution aligned to modern best practice in track maintenance.

Client Value

By adopting a collaborative, safety-led approach and selecting the right tool for the task, KGJ Price demonstrated how innovation does not need to be complex to be effective. The Self-Propelled Jacking Tamper solution delivered real value through reduced risk, efficient delivery, and enhanced assurance at handback.

Technical Data

The SPJT is a unique on-track-machine that delivers results where alternative plant options are unsuitable. The below specifications offer flexibility where site conditions do not.

Travelling Speed (mph)	3
Towing Speed (mph)	12
Working Rate (m/hr)	80
Maximum Lift (mm)	75
Maximum Slue (mm)	75
Maximum Working Gradient (1 in n)	25
Maximum Working Cant (mm)	150
Maximum Travelling Cant (mm)	200
Minimum Working Radius (m)	55

Summary

This project highlights how early collaboration, proportionate plant selection, and practical innovation can combine to deliver safer, smarter outcomes for rail infrastructure works. The tamper has proven to be a valuable addition to the delivery toolkit where precision, safety, and efficiency are critical.