AVK CTS completes the largest "Under Pressure Tapping"

Project Overview

AVK CTS (Complete Tapping Service) achieved a significant milestone by completing what is believed to be the largest Under Pressure Tapping operation undertaken in New Zealand. The project was carried out on a 500mm NB DICL pipeline along Te Mata Road in Napier, with a tapping size of 375mm.

The Challenge

The scale and complexity of the project required meticulous planning, specialist equipment and international logistics coordination. To ensure successful execution, CTS mobilised a large tapping drill, power pack, associated equipment, and specialist tooling to Auckland before deployment to the project site.

In addition, CTS coordinated the urgent air freight of a large epoxy-coated mild steel flanged tapping clamp from the United Kingdom to Australia and onwards to New Zealand. Managing the delivery of critical components across multiple countries was essential to maintaining project timelines and ensuring readiness for installation.

The Solution

Drawing on extensive experience in under pressure tapping operations, CTS managed all aspects of the project, from equipment mobilisation and logistics to on-site execution. The team utilised specialised tapping technology designed to safely and efficiently perform the large-diameter connection while the pipeline remained fully operational.

The Outcome

The tapping operation was completed successfully and without incident, demonstrating CTS’s capability to deliver complex, large-scale under pressure tapping projects.

The client, Monadelphous Engineering NZ, provided outstanding feedback on the project outcome. They commended the quality of the products and materials supplied, as well as the professionalism and expertise demonstrated throughout the process. Particular praise was given to the dedicated service provided by the CTS team, from project planning through to successful completion.

Key Highlights

• Largest known Under Pressure Tapping completed in New Zealand.
• 500mm NB DICL pipeline with a 375mm tapping connection.
• Successful coordination of international logistics for specialist equipment and components.
• Safe and efficient execution while maintaining pipeline operation.
• Exceptional customer feedback from Monadelphous Engineering NZ.
• Demonstrated AVK CTS's expertise in delivering complex infrastructure solutions.

This project highlights AVK CTS's commitment to technical excellence, innovative problem-solving and providing industry-leading service for critical water infrastructure projects.