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Technical
The IOR Safety Code of Practice for Non Flammable, Lower Toxicity Refrigerants (Group A1) has been updated by the IOR as a reference source and guide to interpretation of the latest standards and regulations.
The publication provides essential industry guidance for owners, designers, installers and operators of vapour compression refrigerating systems that use any
group A1 refrigerants which include HFC and HFC blends. It covers properties of refrigerants, decommissioning, testing and maintenance as well as design issues with useful appendices such as typical schedules for inspection and maintenance, system register details, machinery rooms, definitions and an updated list of relevant standards. The Code has been prepared by the IOR Technical Committee as a reference source and guide to interpretation of current safety standards such as BS EN378:2016 and legal requirements such as F Gas, PED, PSSR. The IOR publishes four Safety Codes of Practice specific to refrigerant type - all available free to IOR members.
The remaining Codes are under revision and are due to be reissued in April 2018.
- Non Flammable, Lower Toxicity Refrigerants Group A1
- Flammable Lower Toxicity Refrigerants Group A2L, A2 and A3
- Carbon Dioxide R744
- Ammonia R717
Download or purchase the Code here
Recent posts
Call for Members’ to respond to Consultation on prEN378
21 Jul 2025
We encourage all members to engage in the consultation process by reading the draft standard and submitting comments through the on-line BSI portal, or by sending comments back to the Institute Technical Committee who will collate the comments and submit them on your behalf.
Consultation
IOR RACHP EngTech Section Launches New Technician App
10 Jul 2025
The IOR’s RACHP EngTech Section is proud to announce the launch of an innovative mobile technician’s app, now available on the Apple App Store and Google Play Store.
News
Paul Moseley FInstR
24 Jul 2025
We regret to report the sad news that Paul Moseley a Fellow of the Institute and long term member has passed away
News
IOR Beyond Refrigeration Award - Now Open for Entries
21 Jul 2025
The IOR is calling for submissions for the Beyond Refrigeration Environmental Award! This prestigious annual award celebrates innovative UK projects that are making a real impact by cutting environmental emissions from cooling systems, driving us closer to vital net-zero goals.
Environment
IOR Attends Career Fair at London School
17 Jul 2025
The IOR was invited to a career fair at a South London to showcase career options in the RACHP sector.
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