F-Gas: Use Cases – Detector Systems and Experiments

New Equipment & modification of existing equipment (including retrofit)

When designing or procuring new Equipment, or carrying out modifications to existing Equipment, Equipment responsible persons shall ensure that they use natural gases, low-GWP gases or alternative technologies instead of F-Gases where technically or economically feasible. They shall consult with the F-Gas management team (f-gas-management@cern.ch), who will, in particular review new experimental Equipment (including detectors) and provide support to find mitigation measures to ensure that the most effective and efficient set-up is implemented.

The following recommendations shall therefore be followed when conceiving or selecting new Equipment, or retrofitting existing Equipment:

• Favour natural refrigerants or gasless technologies

If technical or safety issues arise, consider F-Gases with low GWP (< 700, GWP list: EDMS # 3120836).
(Warning: PFAS alternatives will be subject of restriction/phase-out* – note: most HFOs F-Gases are also PFAS)

• Hermetic, air-tight design, including distribution network and pipes to ensure zero emission.
• Guarantee maximum F-Gas recovery feasibility during maintenance, decommissioning, etc.
• Develop procedures for decommissioning of the Equipment or experiment set-up.

[1] Visit the relevant GHG Exchange Platform for information on the phase-out status of F-Gases in the Host States, click here. For information about PFAS, click here.

*Visit the relevant GHG Exchange Platform for information on the phase-out status of F-Gases in the Host States, click here. For information about PFAS, click here.

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