CIRCULAR ECONOMY | TM66 LIGHTING LIGHTING THE WAY CIBSEs TM66 CEAM-Make guides manufacturers through CE requirements for lighting equipment and helps specifiers understand what they need to look for. Dave Hollingsbee, of Stoane Lighting, outlines how his firm has adopted the guidance and what it still has to do The Time on Earth exhibition at the Barbican Centre used ZTA spotlights I t is gratifying to see the speed at which industry is adopting TM66, CIBSE and the Society of Light and Lightings guide to creating a circular economy in lighting. As well as offering practical guidance to adopting circularity, it provides an assessment method that allows manufacturers and specifiers to compare products environmental impact. Known as TM66 Circular Economy Assessment Method (CEAM)-Make, it measures products according to their design, material use, manufacturing method and ecosystem. Stoane Lighting has been using the methodology for two years to assess its products and, as a result, has updated its design and manufacturing processes to embrace circular principles. There is also a simpler tool, TM66 CEAM-Specify, that allows designers, specifiers and engineers to make a quick comparison between products. TM66 CEAM-Make features a list of 72 questions, with most asking for back-up evidence. These are split into four sections (see panel below). The following is a summary of Stoane Lighting responses and details of some of the changes it has made to its products and processes to improve circularity. Availability of spare parts: this is asked in relation to optics, light sources, accessories, and so on, with higher marks for longer periods of AREAS OF ASSESSMENT IN TM66 CEAM-MAKE Product design: covering topics such as design for long life and repair Materials: usage of recyclable materials rather than virgin Manufacturing: additive and subtractive techniques and localisation Ecosystem: repair or upgrade services to complement circular economy design cover. Our five-year warranty and 20-year duty of care contribute positively to the score. Durability of the luminaire and its parts over its lifetime: robust construction helps here, as again does the 20-year duty of care and an aspiration for extended life. More points are available relating to the ease of repair and ease of disassembly, as well as complexity of tools needed and access to information. We provide disassembly instructions for all products. Use of adhesives: there is a higher score when no adhesives are used. Generally, Stoane scored well here. In-house manufacturing: points are awarded according to the proportion of the luminaire made in-house. More control of components makes it easier to support repairs and remanufacturing in the future. Stoane manufactures in-house, uses its own designs and retains its drawings. Geographical distance from manufacturer to installation site: the shorter the distance the better, so it is easier to facilitate repair and remanufacturing. As a UK manufacturer with most business in the UK, Stoane scores well. Minimising unreusable waste: Stoane gained credit for product developments that avoided unavoidable waste. Corporate social responsibility: the tool recognises that firms with audited CSR policies are more engaged. Being an employee-owned firm scores points for Stoane, which is a verified-benefit corporation (B-Corp) and silver-accredited by EcoVardis. Increasing use of recycled material: Stoanes primary aluminium supplier uses high-percentage recycled content and we are making inroads into onsite remelting of our aluminium waste. We are also sequestering and elevating captured overspray from our finishing plant into high-value product. Reusing components: marks are available if designs reuse, or can reuse, components from sister products. Stoanes ZTA range has intercompatibility across product types. Biodegradable packaging materials: Stoane has moved from plastic packing to paper and card, and has volatile organic compound-free ink stamps. 30 January 2023 www.cibsejournal.com CIBSE Jan23.indb 30 03/01/2023 11:12