As regards planning, Piva explains that the expansion has been undergoing study for at least 18 months prior to action, which allows the company to assess any interference that may exist at the locations where drilling will be performed.Īs standard procedure, the concessionaire elaborates the basic project and participates intensely in the elaboration of the executive project, evaluating the plans for drilling. Besides the management of the project itself, each contractor must prove that it is capable of complying with the sector’s norms. With that, the company expects to add another 1,250 km to its piped gas network in 2013, maintaining the level of use of NDM between 90% and 95% of the total for such works.Īll of the companies that are hired to participate in this type of project at Comgás must be qualified a process that also includes companies that are subcontracted. The average diameter pipeline however ranges from 63 mm to 125 mm, which enables the use of smaller, more agile Horizontal Directional Drilling (HDD) machines that can easily be moved from one job site to another for deployment. The infrastructure of the company’s pipelines includes networks of polyethylene pipes with diameters ranging from 20 mm to 250 mm. Piva further reminds us that, prior to the more intensive use of the technology as of the beginning of the 2000s, the methodology was already widely known and used abroad in applications involving smaller networks and using smaller machines when compared to present-day equipment. “Sidewalks are left intact, repairs are reduced to a minimum, and intervention in traffic and in the area surrounding the job site is much lower.” “There is a fierce difference between the use of non-destructive methods and the conventional digging of trenches,” Piva assures. Lower environmental impact, through reduced production of construction residues, is another aspect that scored points for the technology at Comgás. Piva argues that the qualification of companies has also grown over the 12 years that his company has been using non-destructive construction method technology. To him, since year 2000, adoption of the NDM has been very intense and one of the most positive factors in this period was the growth in the number of companies that adopted this technology. “NDM technology is very important because it is practical and causes less impact on urban surroundings,” assesses Piva. And the forecast was that, by the end of the year, the figure would reach 1,250 km. Until September 2012, the number of networks that were installed was also significant, reaching 918 km. In all, that meant 1,200 km of new distribution network lines according to Laércio Piva, superintendent for network expansion at Comgás. In the former (Comgás), over 90% of works for the expansion of gas distribution that were carried out in 2011 utilized the technology. Two public utilities concessionaires in the city of São Paulo, Comgás and Sabesp, demonstrate how the use of non-destructive construction methods (NDM) has literally been gaining ground in the country. Utilizing non-destructive construction methods (NDMs), companies such as Sabesp and Comgás are proof of how such technologies can be economically attractive for the installation of underground networks
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |