Transport is a major consumer of energy, which is obtained changing fuels, mainly by combustion engines. In the combustion process generates gaseous emissions (CO2, CO, NOx, SOx, and others like particles) whose harmfulness depends on the source of energy used.
often argued that powered electric vehicles are "clean", like those using hydrogen fuel cells. but in reality, these types of vehicles generate today, the more pollution than internal combustion vehicles.
The reason is that the generation of hydrogen or electricity consumed energy produced in coal-fired steam power plants, ie plants that are used off-peak period.
hydrogen production or storage in batteries introduces losses of around 60% of the electricity produced and, therefore, three times the amount of pollution produced by coal plants.
In general, it is estimated that the use of hydrogen vehicles will increase the amount of carbon and sulfur in the atmosphere (Responsible for global warming and acid rain), but decrease the amount of nitrogen compounds (responsible for the "smog" or "smog"). They do have the advantage (or disadvantage) that allow you to centralize the pollution in one place and make treatment easier (or hiding).
Given the expected depletion of fossil fuels by 2050, global transportation is challenged to fully customize their systems in just under five decades.
is expected that hydrogen vehicles will be cheaper, extrapolating current technologies, which we learn to produce by other than the highly polluting methods used today (natural gas treatment with steam), which generates huge amounts of carbon dioxide, if its use does not further contribute to global warming.
In recent years vehicles have been getting cleaner as a result of stricter environmental regulations and incorporation of improved technologies (catalytic converters, etc..), And, above all, for better fuel efficiency. However, this situation has been more than offset by the increase in both the number of vehicles and the increased annual use of each vehicle, which determines that cities with more than 1,000,000 people have problems of excessive air pollution levels, affecting the health of the population. ENVIRONMENTAL STANDARDS
Develop and implement an EMS standard need not necessarily culminate in certification thereof. But the certification of an EMS is only possible if it has been developed based on the specific requirements of ISO 14001. Certification will
then to demonstrate to interested parties that the organization has successfully implemented and appropriately an EMS in accordance with the reference standard.
For certification EMS is necessary that the system has completed its full cycle, that is, from the development of environmental policy to the management review. It is generally recommended that the system is implemented in the organization and running at least three months before the certification process. During this time records will be generated will create habits and detect weaknesses in the EMS that will require timely corrective actions.
Therefore, they should not wait until the end to generalize the EMS to all staff but to proceed gradually.
Once the project, the selection of the certifier should be done soon. Should talk to auditors and to consider whether the certification meets the needs of the organization, taking into account that the auditor, in addition to competition, should preferably have expertise in the sector.
For your selection, should take into account qualifications, experience in the sector, the independence and objectivity.
The organization is now able to demonstrate compliance with minimum levels, which may be audited and certified, but they are subject to a systematic process of continuous improvement and cyclical. That is, you have to move forward on the spiral of continuous improvement
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