Process information
| Key Data Set Information | |
| Location | EU-27 |
| Reference year | 2016 |
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| Use advice for data set | Scope: This ARGE EPD covers cylinders, used to operate locks by means of a key. The reference product used to calculate the impact this product group has on the environment is a lock cylinder composed primarily of brass, zinc-based alloy and steel, and has been selected for the LCA (Life Cycle Assessment) because it is the product with the highest impact for 1 kg of product. A validity scope analysis has also been carried out to determine the limiting factors for lock cylinders covered by this EPD. In a preliminary study (simplified LCA), it has been confirmed that this EPD represents the worst case condition and it can therefore be used to cover all lock cylinders manufactured in Europe by ARGE member companies. System boundary: This type of the EPD covers “cradle-to-grave” requirements. The analysis of the product life cycle includes the production and transport of the raw materials, manufacture of the product and the packaging materials, which are declared in modules A1-A3. Losses during production are considered as waste and are sent to recycling. No recycling processes are taken into account except transport and an electricity consumption for grinding the metals. When recycled metals are used as raw material, only their transformation process is taken into account, and not the extraction of raw material. A4 module represents the transport of the finished product to the installation site. There is no waste associated with the installation of the product. The A5 module therefore represents only the disposal of the product packaging. For the RSL considered for this study, there are no inputs or outputs for the stages B1-B7. The End-of-Life (EoL) stages are also considered. The transportation to the EoL disposal site is taken into account in module C2. Module C4 covers the disposal of the lock cylinders. Module C3 covers the recycling of the individual elements according to European averages, with the remaining waste divided between incineration and landfill. The same assumption as for waste to recycling in A3 is used here. For end of life modules (C1 to C4) the system boundaries from the /XP P01-064/CN/ standard have been followed, see annex H.2 and H.6 of the standard document cited previously for figures and further details. In practice the end-of-life has been modelled as follows: - When material is sent to recycling generic transport and electric consumption of a shredder is taken into account (corresponding to the process “Grinding, metals”). Only then is the material considered to have attained the “end-of-waste” state. - Each type of waste is modelled as a transport to the treatment site over a distance of 30 km (source: /FD P01-015/). Parts sent to recycling include an electricity consumption (grinding) and a flow (“Materials for recycling, unspecified”). Four scenarios for the end-of-life of the products have been declared for this EPD: - 1. 100% of the product going to landfill - 2. 100% of the product going to incineration - 3. 100% of the product going to recycling - 4. Mixed scenario consisting of the previous three scenarios, values depending of the amount of waste going to recycling. Module D has not been declared. |
| Technical purpose of product or process | These products are designed to be mounted in lock assemblies of varying materials intended for use on interior or exterior doors. |
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| General comment on data set | This EPD refers to cylinders used to operate, by means of a key, the bolt throwing mechanism within a lock. It covers lock cylinders with varying material compositions and security grades. |
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| Copyright | Yes |
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| Time representativeness | |
| Data set valid until | 2021 |
| Technological representativeness | |
| Technology description including background system | The production of a lock cylinder regularly follows a 3 step procedure: 1. Prefabrication of the semi-finished products (usually by stamp punching or laser cutting) This step might include a surface treatment on factory site or by external manufacturers. 2. Preassembly of assembly modules (onsite factory) 3. Final assembly (onsite factory) Technical data: , products should comply with a suitable technical specification. /EN 1303/ - Cylinders for locks is an example of such a specification and some products will comply with this. The relevant grading structure is shown in the following table Declared unit: The declared unit for all products covered by ARGE EPD is 1 kg (of product). Since individual products will rarely weigh exactly 1 kg it is necessary to establish the exact weight of the product then use this as a correction factor to determine the true values for 1 kg of product in the tables (Section 5) A total of 8 typical products (based on sales figures) have been evaluated, and the worst case results are used in the tables |
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Modelling and validation
Administrative information
Environmental indicators