CIRIA C736 – Pollution Containment Guidance

Understanding CIRIA C736 Requirements

CIRIA C736 provides industry guidance for the design and implementation of containment systems used to prevent pollution from entering controlled waters. The guidance highlights the importance of system reliability, containment capacity, and the need for engineered solutions capable of responding effectively during emergency events.

Extract from CIRIA C736 – System Reliability (Section 3.8)

“The degree of environmental protection provided by a containment system depends upon its reliability to respond to an incident in the way intended. This reliability is influenced by factors including system complexity, the need for manual or automatic intervention, ease of maintenance, and the ability to monitor system performance.” Source: CIRIA C736 – Containment Systems for the Prevention of Water Pollution

What This Means in Practice

This section of CIRIA C736 emphasises that containment systems must be capable of operating reliably under emergency conditions, without reliance on manual intervention. In practical terms, this requires systems that:

• respond automatically or can be triggered remotely 
• provide consistent sealing performance 
• operate independently of site power where necessary 
• can be tested and maintained to ensure ongoing reliability 

Key Requirements for Containment Systems

Based on CIRIA C736 guidance, effective systems should:

• deliver rapid response to prevent spread of contamination 
• provide reliable, leak-tight isolation 
• maintain performance under varying hydraulic conditions 
• integrate with site monitoring and control systems 

How ToggleBlok® Aligns with CIRIA C736

ToggleBlok® systems are engineered to meet the key principles outlined within CIRIA C736, including:

• rapid, automated response to containment events 
• reliable sealing performance under pressure 
• integration with fire alarms, flood sensors, and monitoring systems 
• independent power options to ensure operation during failure conditions