BREEAM Impact of refrigerants
 Aim and benefits
 What's the problem with refrigerants?
Chlorinated refrigerants (chlorofluorocarbons – CFCs, and to a lesser extent, hydrochlorofluorocarbons - HCFCs) contribute to the depletion of stratosphericozone if released into the atmosphere due to equipment leaks or if refrigerants are not properly recovered when disposal of the equipment takes place.
Due to their stability in the atmosphere, CFCs as well as HCFCs and HFCs are often very effective greenhouse gases. The GWP factor is used to reflect their impact on global warming. The GWP is the ratio of the warming caused by a substance to the warming caused by a similar mass of carbon dioxide.
 When to consider
At the pre-assessment, it's useful to establish:
All systems (with electric compressors) must comply with the requirements of BS EN 378: 2008/ 2008 +A2: 2012/ BS EN 378: 2016 (parts 2 and 3) and where refrigeration systems containing ammonia are installed, the Institute of Refrigeration: Ammonia Refrigeration Systems Code of Practice.
For the pre-requisite you’ll need to confirm that the units will be installed to BS EN 378:2008 (Refrigerant Systems and Heat Pumps. Safety and Environmental Requirements) or as the 2008 edition has been superseded, you’ll need to confirm that the units will be installed to BS EN 378: 2016 (The 2016 edition incorporates additional refrigerant types, but both documents have the same methodology for Classification A1 refrigerants i.e. R410A, although page numbers may be different).
From the BS:
Part 1: (calculations will be required to assistance evidence for Part 2)
Using BS EN 378-1: 2008: Table C.1 Refrigerant Safety Groups (page 38 onwards) – you will need to confirm the ‘Refrigerant Safety Group – A1’ and the calculation required e.g. Box 1: Maximum charge = practical limit x room volume.
'Example Room 1'
0.44 x 200.31 = 88.14kg maximum charge
From the Designer: You will need to confirm the systems design. Types of evidence to confirm this might be specification, engineering report, drawings and manufacturer’s literature etc. If the system is to be selected by sub-contractor, you’ll need to confirm the requirements at the design stage that the sub-contractor will need to comply with?
From the Manufacturer: You will need to provide evidence such as a Declaration of Conformity, Literature that confirms compliance with BS EN 378-2: 2008 or 2016. (This is often difficult to obtain? However, generally satisfactory at the design stage is a drawing annotation to confirm that the system(s) must comply with the standard, at the construction stage this annotation needs to remain on the ‘As-Installed’ drawing – this is not irrefutable evidence, but seems to be about the most resilient for the time being?)
You will need to confirm the site installation procedure (e.g. a risk assessment and method statement should suffice, which includes any site wide protection and/ or personal protective equipment required) and that full commissioning sheets will be required at practical completion to confirm compliance with the Standard. This could be annotated on a drawing at the design stage and retained at on the construction stage ‘as-installed’ drawings (Again this is not irrefutable evidence!)
 Questions to ask while seeking compliance
Will the development be predominately naturally ventilated but require small scale hermatically sealed units to a couple of spaces i.e. internal meeting rooms, comms rooms? - if 'yes' then the pre-requisite will need to be satisfied.
A copy of the British Standard will be required to prepare the pre-requisite calculations.
 Tips and best practice
- DELC <100 or GWP <10 -- Unless you're using a "strange" system with refrigerants such as ammonia, water -- you probably won't achieve these credits. Less than 1000 however, is relatively OK if you use R134a/R32 or something similar.
 Typical evidence
Confirmation of the refrigerant to be used.
 Applicable Schemes
The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See this document for further guidelines.
--Multiple Author Article 22:16, 21 Apr 2018 (BST)
Issue support documents
|These are Multiple Author Articles - click on them and add to them today. It's easy.|
You can also add to General Multiple Author Articles here.
Issue support documents are written for named BREEAM Issues or sub-issues. More info. (ac) = awaiting content.
|Thanks to our Knowledge Sharing Ambassadors for a lot of this content|
- BREEAM Sustainability champion
- BREEAM Environmental management
- BREEAM Considerate construction
- BREEAM Monitoring of construction site impacts
- BREEAM Aftercare support
- BREEAM Seasonal commissioning
- BREEAM Testing and inspecting building fabric
- BREEAM Life cycle cost and service life planning
- BREEAM Stakeholder consultation (ac)
- BREEAM Commissioning (ac)
- BREEAM Handover (ac)
- BREEAM Inclusive and accessible design (ac)
- BREEAM Post occupancy evaluation
 Health and Wellbeing
- BREEAM Visual comfort Daylighting (partly ac)
- BREEAM Visual comfort View out
- BREEAM Visual comfort Glare control
- BREEAM Indoor air quality plan
- BREEAM Indoor air quality Ventilation
- BREEAM Thermal comfort
- BREEAM Internal and external lighting (ac)
- BREEAM Indoor pollutants VOCs (ac)
- BREEAM Potential for natural ventilation (ac)
- BREEAM Safe containment in laboratories (ac)
- BREEAM Acoustic performance
- BREEAM Safety and security (ac)
- BREEAM Reduction of energy use and carbon emissions
- BREEAM Energy monitoring
- BREEAM External lighting
- BREEAM Low carbon design
- BREEAM Passive design
- BREEAM Free cooling
- BREEAM LZC technologies
- BREEAM Energy efficient cold storage (partly ac)
- BREEAM Energy efficient transportation systems
- BREEAM Energy efficient laboratory systems
- BREEAM Energy efficient equipment (partly ac)
- BREEAM Drying space
- BREEAM Transport assessment and travel plan
- BREEAM Public transport accessibility
- BREEAM Sustainable transport measures
- BREEAM Proximity to amenities
- BREEAM Cyclist facilities
- BREEAM Alternative modes of transport (ac)
- BREEAM Maximum car parking capacity
- BREEAM Travel plan
- BREEAM Home office (ac)
- BREEAM Water consumption
- BREEAM Water efficient equipment
- BREEAM Water monitoring
- BREEAM Water leak detection (ac)
- BREEAM Hard landscaping and boundary protection
- BREEAM Responsible sourcing of materials
- BREEAM Insulation
- BREEAM Designing for durability and resilience
- BREEAM Life cycle impacts
- BREEAM Material efficiency (ac)
- BREEAM Construction waste management
- BREEAM Recycled aggregates
- BREEAM Speculative floor & ceiling finishes
- BREEAM Adaptation to climate change
- BREEAM Operational waste
- BREEAM Functional adaptability (ac)
 Land Use and Ecology
- BREEAM Site Selection
- BREEAM Ecological value of site
- BREEAM Protection of ecological features
- BREEAM Minimising impact on existing site ecology
- BREEAM Enhancing site ecology
- BREEAM Long term impact on biodiversity (ac)
- BREEAM Impact of refrigerants
- BREEAM NOx emissions
- BREEAM Flood risk management (ac)
- BREEAM Surface water run-off (ac)
- BREEAM Reduction of night time light pollution (partly ac)
- BREEAM Reduction of noise pollution
Once an ISD has been initially created the '(ac)' marker can be removed
This particular index is based around the structure of the New Construction and RFO schemes.