Our liquid nitrogen pipe freezing specialists completed a live 6-inch valve installation at Shoreham Wastewater Treatment Works in Brighton without draining the operational water system.
Project: Pipe Freeze – 6″ cold water drain line and introduce Gate Valve
Location: Shoreham Wastewater Treatment Works (WTW), Basin Road South, Shoreham, Brighton
Client: Southern Water
Main Contractor: Knowlton & Newman
Service: Liquid Nitrogen Pipe Freezing
Sector: Water and Wastewater Utilities
Works included: Installing 6″ PN16 gate valve
Why did Shoreham Wastewater Treatment Works Need Liquid Nitrogen Pipe Freezing?
The project required the installation of a new 6-inch PN16 gate valve on an operational cold-water drain line. Traditionally, contractors may need to isolate and drain extensive sections of pipework before carrying out modifications. However, this approach can increase labour costs, extend project durations, and disrupt critical operations.
Therefore, the client selected our experienced team to perform liquid nitrogen pipe freezing services to create a temporary ice plug within the pipework. This controlled pipework freeze enabled engineers to safely cut into the live system and install the new valve without draining significant volumes of water. As a result, the project progressed efficiently while maintaining site operations.
Before:
During Welding:
How did Our Pipe Freezer Company Complete the Works?
As a specialist pipe freezing contractor, our professional engineers attended site during normal working hours and carried out the following services:
- Installation of freeze jackets onto the 6-inch drain line
- Application of liquid nitrogen pipe freezing techniques
- Creation of a controlled ice plug within the live pipework
- Monitoring of cryogenic freezing temperatures
- Local drainage of surplus water following freeze formation
- Cutting of the existing pipe section
- On-site welding of a new flange assembly
- Installation of one new 6-inch PN16 gate valve
- Controlled thawing and release of the freeze
- Leak testing and system verification
- Removal and disposal of all redundant materials
Throughout the project, our engineers carefully monitored freeze conditions to maintain a secure and effective pipework freezing process.
After:
How Does Liquid Nitrogen Pipe Freezing Work?
Liquid nitrogen pipe freezing creates a temporary blockage, commonly known as an ice plug, within a section of pipework. Firstly, our expert engineers install specialist freeze jackets around the pipe. Next, liquid nitrogen circulates through the jackets, rapidly reducing pipe temperatures.
Once frozen, the water within the pipe forms a solid ice plug capable of holding back system pressure. Consequently, contractors can safely modify, repair, or install components without draining extensive sections of the system. Many Facilities Managers, Utility Operators, Building Managers and contractors choose cryogenic pipe freezing because it reduces disruption and often lowers project costs. Learn more, please read our guide.
What Challenges did This Pipe Freeze Project Overcome?
Water utility sites operate continuously and frequently contain infrastructure that cannot easily be taken offline. In this case, a full system shutdown would have increased project complexity and potentially affected operational activities. Instead, our specialist pipe freezing company created a localised isolation point directly at the work area.
This approach delivered several advantages:
Before Pipe Freezing
- Valve installation required system isolation
- Potential draining of significant pipework sections
- Increased labour requirements
- Longer project duration
- Greater operational disruption
After Pipe Freezing
- Live system remained operational
- Localised isolation achieved
- New gate valve installed successfully
- Reduced downtime
- Faster project completion
This transformation demonstrates why our clients continue to adopt pipe freezing methods for infrastructure upgrades.
What Results did The Client Achieve?
Although every project differs, this pipework freeze delivered several measurable benefits.
Project Outcomes
- Successful installation of one 6-inch PN16 gate valve
- No requirement for large-scale system drainage
- Live water infrastructure maintained throughout works
- Reduced operational disruption
- Faster completion compared with traditional isolation methods
- Safe and controlled modification of existing pipework
For utility operators, these advantages often translate into lower overall project costs and improved programme certainty.
Why do Utility Contractors Choose Our Pipe Freezing Services?
Our team provides high quality pipe freezing services throughout West Sussex, East Sussex, Kent, Surrey, Essex, Hampshire, and London.
We support:
- Water treatment facilities
- Wastewater treatment works
- Commercial buildings
- Hospitals
- Schools
- Industrial facilities
- Data centres
- District heating networks
- And more.
Furthermore, our engineers regularly deliver cryogenic pipe freezing solutions on both planned and emergency projects. Whether clients require a single pipe freeze or complex multi-freeze operations, we provide practical solutions that minimise disruption. Our experience across heating systems, chilled water systems, and utility infrastructure allows us to recommend the most suitable pipe freezing methods for each application.
How can Pipe Freezing Help Facilities Managers?
Facilities managers, utility operators, and asset owners often face pressure to maintain services while upgrading ageing infrastructure. Pipefreezing offers an effective solution because it creates temporary isolation points without extensive draining operations. As a result, maintenance teams can replace valves, install new branches, and carry out modifications while keeping systems operational.
For organisations managing critical infrastructure, this approach can reduce risk, shorten maintenance windows, and improve operational resilience.
Do you Need a Specialist Pipe Freezing Contractor?
If you require top-tier pipe freezing services for a water utility, commercial building, or industrial facility, our experienced engineers can help. As a trusted pipe freezing company and pipe freezing company in London, we regularly deliver safe and reliable liquid nitrogen pipe freezing solutions throughout the South East.
Contact our team today to discuss your project requirements and discover how pipe freezing services could help reduce downtime, minimise disruption, and support a safer installation process.
Commercial Pipe Freeze Frequently Asked Questions
What is Liquid Nitrogen Pipe Freezing?
Liquid nitrogen pipe freezing uses cryogenic freezing technology to create a temporary ice plug within live pipework. Engineers then complete modifications without draining the system.
Is Pipe Freezing Safe for Water Utility Infrastructure?
When carried out by an experienced pipe freezing contractor, pipe freezing provides a safe and controlled isolation method for many water systems.
What Size Pipes can be Frozen?
Pipe freezing services can be used on various pipe sizes. The exact capability depends on pipe material, operating conditions, and system contents.
Can you Install Valves During a Pipe Freeze?
Yes. Many clients use pipe freezing services specifically to install new valves, replace faulty valves, or modify existing systems.
What Industries use Cryogenic Pipe Freezing?
Common sectors include water utilities, wastewater treatment, healthcare, commercial buildings, manufacturing, education, and industrial facilities.
Why Choose Pipe Freezing Instead of Draining the System?
Pipe freezing often reduces downtime, minimises disruption, lowers labour requirements, and avoids draining large sections of operational pipework.
Need a Commercial / Industrial Pipework Freezing Contractor?
If you manage a building and need to complete pipework repairs without major disruption, we can help. Our team delivers specialist pipe freezing services across London, Kent, Surrey, Hampshire, Essex, East Sussex, West Sussex and beyond.
Speak to our team today to plan your next project with minimal disruption and maximum control on 020 8302 7644 or email info@idwe.co.uk to discuss your project and reduce downtime with a proven solution.
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