Steel structures and steel structure components

The data selected for LCA originate from ITB-LCI questionnaires completed by Valmont Polska Sp.z o.o. and verified during data audit. No data collected is older than five years and no genericdatasets used are older than ten years. The representativeness, completeness, reliability, andconsistency is judged as good. The background data for the processes come from the followingresources database Ecoinvent v.3.9.1 (steel, welding, paints, polyester, polyethylene terephthalateproduction, EUR-flat pallet, structural timber). Specific (LCI) data quality analysis was a part of theinput data verification. Where no background data was available, data gaps were complemented bymanufacturer information and literature research. The allocation rules used for this EPD are based on general ITB’s document PCR A. Production of the covered steel products is a line process (as presented in Figure 1) conducted in the manufacturing plant located in Siedlce (Poland). Input and output data from the production is inventoried and allocated to the production on the mass basis. The declaration covers a wide range of steel products. Their production resources and processing stages are basicly similar, so it is possible to average the production by product weight. The production process carried out at another company's plant is galvanizing and optional special coating, which was included in the calculations. Minimum 99.0% input materials and 100% energy consumption (electricity, gas, LPG, other) were inventoried in a processing plant and were included in the calculation. In the assessment, all significant parameters from gathered production data are considered, i.e. all material used per formulation, utilized thermal energy, and electric power consumption, direct production waste and available emission measurements. Tires consumption for transport was not considered. Substances with a percentage share of less than 0.1% of total mass were excluded from the calculations. The packaging products (wooden pallets) are included. Modules A5, B1-B5 are not assessed. In B1-B5, only marginal maintenance is required.

-

Valmont Polska Sp. z o. o. at the plant in Siedlce produces steel lighting, signaling, tram and power poles and high masts The production process is partially automated and is based on the acceptance of metallurgical materials for production (steel coils or steel sheets) and then cold processing of steel (unwinding, cutting, bending). The shaped elements are welded longitudinally by one of the following three methods, depending on the technological process: ? SAW (submerged arc welding) – submerged arc welding, ? PAW (plasma arc welding) – plasma welding, ? ERW (electric resistance welding) – electric resistance welding. The structure is finished in black, including welding of the base and accessories, using MIG-MAG welding and mechanical methods - cutting, grinding, burning. The products are protected against corrosion by hot-dip galvanizing in external galvanizing plants, and can optionally be powder coated or hydrodynamically coated in external painting shops. The steel columns covered by this EPD are manufactured in several conicities made out of hot-rolled steel sheet with few thicknesses and grades based on customer requirements and local norms. The product range is presented in the product catalogue and is described in terms of material, shape, height, taper, together with the conditions of use (passive safety).Depending on the type, the pole is circular or octagonal in cross-section. -