Hitachi Rail is very aware of the contribution that efficient consumption of raw materials can give, in terms of contribution for CO2 reduction. The company promote the reduction of intensive use of raw materials in line with the OECD Council principles and its sustainability strategy.
This commitment is reflected through the definition of a reliable evaluation of raw material uses in different company activities, which is sometime difficult to establish for some specific business like for electronic and electromechanical components. However, as described in this document, Hitachi Rail search for increasingly standardised designs and innovation to lead an overall reduction in the direct or indirect consumption of raw materials.
|Liquefied compressed gases [t]||75.679,08||94.686,25|
|Carbon dioxide [t]||14,85||12,83|
|Paints (water based) [t]||60,70||45,96|
|Thinner (organic solvent) [t]||18,37||5,96|
|Degreasing agents [t]||5,02||3,33|
|Glues and adhesives [t]||15,96||12,45|
31.03.19 – 31.03.20
of pakaging used
The production of waste is an environmental aspect that is assessed and measured at all Hitachi Rail sites and offices together with the analysis of work sites and construction of civil and technological products.
Hitachi Rail’s policy is to reinforce the prevention, re-use, recycling and recovery of waste. All its sites have waste collection areas based on the type of waste and site layout. External specialist companies collect and process hazardous and non-hazardous waste. The most prominent waste at production sites relates to paper, cardboard and wood packaging, metal and out-of-order equipment.
of waste produced
88.1 % to 91.4 %
total waste recycled
For Hitachi Rail STS, pollutant emissions relate to the consumption of non-renewable resources used to run thermal plants (natural gas and diesel) and to the production processes that emit volatile organic and inorganic compounds.
|PM 10 (Kg)||38.6||39.0|
|Volatile organic compounds (Kg)||931.9||584.8|
|Volatile inorganic compounds (Kg)||9.4||2.6|
“80% of environmental impact generated by products services and infrastructures around us is determined at Project Stage” (J. Thackara, 2008)
Hitachi Rail has been adopting eco-design principle for many years. Different design solutions fitting the same technical requirements, are evaluated since the very beginning of the project:
Specific Eco profiles or light LCA (Life Cycle Assessment) studies are performed on different rolling stock solutions in order to verify corresponding environmental effects on a trainset’s footprint. This allows Hitachi Rail Design department to consider environmental impacts like any other constraints that need to be met.
Design solutions aimed at reducing environmental impact of trainset quickly turn into design best practices to be implemented, whenever applicable, on all future projects.
This has happened for high efficiency HVAC (Heating, Ventilation and Air Conditioning) and lighting systems, for super capacity energy recovery systems, for aerodynamics test carried out on bogies and car bodies and so on.
Adopting this approach, Hitachi Rail succeeded in selecting a list of eco-design best practices that can be applied on every project whenever possible. Addressing sustainability at the design phase can have an enormous impact.
Hitachi Rail firmly believes that to reduce products environmental impacts you have to quantify them and highlight which are the main sources. For this reason, for more than 15 years Hitachi Rail has performed Life Cycle Assessments (LCA) on its production according to ISO 14040 and ISO 14044 standards, applying a reliable internal procedure to collect, organise, elaborate and analyse data for this purpose.
Hitachi Rail’s methodology to collect and check information, rules for Input/Output flows, simulations for energy consumption calculation during operations have been validated by certification body during EPD (Environmental Product Declaration) certification.
All suppliers to Hitachi Rail’s rolling stock factories are contractually required to provide a detailed materials composition concerning the production of parts, components and raw materials to the Company’s Eco-Design Engineering department.
All information concerning production of raw materials and components assembled in company’s plants, transportation of supplies, processes carried out in Hitachi Rail plants and trainset operational data are collected and internally checked.
Commercial software used by Hitachi to develop LCA studies takes into account not only the industrial processes required to produce each part but the processes applied to basic materials too, like moulding, stamping, wire drawings and so on.
Transport information (from suppliers to Hitachi Rail’s plants, between Hitachi Rail sites, for product delivery as well as for waste transport are generally estimated considering the distance covered, the weight of material delivered and using specific transportation processes (by road, sea, rail, air) included in software used for LCA modelling.
Information concerning energy, auxiliaries and water consumption, as well as emissions in air, water discharge and wastes due to activities carried out in Hitachi Rail plants involved in Trainset production are collected by the environmental office.
Moreover, Hitachi Rail developed a tool to calculate trainset operational energy consumption according to standard CLC/TS 50591:2013.
Each LCA carried out considers the most appropriate electric energy mix for plants involved in rolling stock assembly and for energy consumption during operational phase. According to relevant Product Category Rules (PCR), mix residual approach is used for electric energy consumption in European countries.
Most of the environmental impact of rolling stock come from energy consumption during the 30 – 40 years of its operational life.
The energy consumption simulator tool calculates rolling stock energy consumption over time, taking into account hypothesis and constraints meeting the following parameters:
▪ Mission profile supplied by customer (lengths of the routes, differences in altitude, expected duration of the routes, number of stations, acceleration-deceleration curves);
▪ Number of passengers.
▪ HVAC (Heating, Ventilation and Air Conditioning) use;
▪ Internal and external lighting;
▪ Other auxiliaries;
▪ Energy recovery system adopted;
▪ Weight of the rolling stock;
▪ Trainset aerodynamic parameters;
▪ Friction resistance;
▪ Power unit and transmission system;
▪ Drive assistance systems.
Finally, Life Cycle Assessments carried out by Hitachi Rail take into account not only the impact of preventive maintenance during a train’s operational phase, but also the impact of waste management during rolling stock dismantling at end of life. Our ‘Rock’ trains currently in delivery to Trenitalia in Italy are more than 95% recyclable and consume 30% less energy than the previous fleet.
According to Hitachi Rail’s Service & Maintenance process, feedback coming from the field used to solve potential problems raised on the first rolling stock produced but also to tune predictive maintenance activity for the entire fleet. As a result, predictive maintenance scheduled by Hitachi Rail are very detailed and assure an efficient, reliable service life of Trainset.