TB60 Pipework Pneumatic Leak Testing - Additional Guidance

Pneumatic leak testing is widely used across building services pipework installations as an early method of identifying potential leak paths before the introduction of other fluids or higher pressure testing. TB60 provides additional guidance to support this practice, helping contractors and engineers apply pneumatic testing in a safe, practical, and consistent way. The bulletin sits alongside TR/6 Guide to Good Practice for Site Pressure Testing of Pipework Systems and expands on the established industry approach of carrying out a pneumatic leak test at 0.5 barg before proceeding to further testing. It explains the rationale behind the 100 litre limit referenced in TR/6 and provides additional guidance where the total volume of pipework under test is greater than 100 litres. TB60 also includes guidance on calculating pipework test volumes, the implications of testing larger volumes at 0.5 barg, and the limitations of using reduced pneumatic test pressures. It reinforces the need for competent risk assessment, appropriate control measures, and safe systems of work where stored energy and testing risk increase. Designed for contractors, commissioning professionals, and building services engineers, TB60 complements the wider BESA technical guidance library. The bulletin also includes appendices with a pressure testing risk assessment template, guidance notes, and a toolbox talk to support safer site practice. Key Features: Additional guidance on pneumatic leak testing for building services pipework systems Supports the industry practice of testing at 0.5 barg before further pressure testing Explains the rationale for the 100 litre pipework volume limit referenced in TR/6 Provides guidance where pipework test volumes exceed 100 litres Includes practical support materials such as a risk assessment template, guidance notes, and toolbox talk Published Date: 14/04/2026 Number Of Pages: 23 PDF Download