ShareBESA releases new guidelines for safe use of R290 propane in heating and cooling systems
BESA's latest technical guidance outlines safety practices and technical considerations for using R290 (propane) in RACHP systems.
United Kingdom:
The Building Engineering Services Association (BESA) has published new technical guidance (TB57) to support the safe handling and management of flammable refrigerants like R290 (propane) in cooling and heating applications. This document addresses the increased use of R290, a low Global Warming Potential (GWP) refrigerant with higher flammability, by providing safety guidelines and highlighting technical considerations.
Currently, the UK lacks specific regulations for the use of R290, beyond the F-Gas Regulations. The guide aims to ensure the safe and efficient adoption of R290, which has become more popular due to its low environmental impact and compliance with international commitments such as the Montreal Protocol and the Kigali Amendment.
The publication coincided with World Refrigeration Day, emphasising the critical role of refrigeration expertise in heating and cooling systems.
The EU's recent amendments to the F-Gas Regulations, effective from 2027, will require refrigerants with GWP below 150 for small systems and below 750 for larger systems, potentially increasing the demand for R290. Although these changes do not currently apply to the UK, the country is expected to adopt similar standards.
The technical guidance details important considerations for using R290, such as its high heat transfer rates and low pressure ratios, which can reduce leakage risks. It stresses the need for proper training for engineers to handle R290 safely due to its high flammability. The gas, classified as an A3 refrigerant, can be ignited by static electricity and poses significant risks even in small amounts.
Key recommendations include conducting thorough risk assessments, ensuring adequate ventilation around R290 systems, purging systems before maintenance work, and utilising leak detection technologies. For retrofit projects, maintaining a safe distance between R290 units and electrical equipment is crucial to mitigate potential hazards.
BESA is part of the laboratory directory of the IIR: https://iifiir.org/en/laboratories.
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