M.M. S.r.l. Fiberglass Reinforced Polymer gratings and structures Via Antonio Zanussi, 300/302 33100 Udine - Italy Cap. Soc. EURO 100.000 i.v. GANGWAYS AND PARAPETS FOR WATER WORKS LOCATION Filtration and water treatment plant. There are 29 water works plants distributed in the Milan area. They are real “water factories” where potable water is produced. The process is made in a continuous cycle so all parts as the engine room, the pumps, activated carbon filters, the accumulation tanks and the water supply wells must continuously keep on working. The signs of decay and the corrosion of the standard metal structures were conditions that had to be solved because the particular environment needed to be non-contaminated: it’s an area where reverse osmosis takes place, where there are activated carbon fibers and oxidation systems.Considering that this water treatment plant is the Milan’s most important (over 2/3 of the total production), the structure replacements had to be made with no production shutdown and had to be adaptable to prior installations and pipes. Materials had to be resistant to environmental conditions, installation and servicing costs had to be reduced. Monoutility that manages the water service and the public control of the corporate members. Location Milan (Italy) gratings type SCH 38/38_IFR, pultruded profiles M.M. has designed the new structures and their installation sequence according to the UNI EN ISO 14122 - 1,2,3,4 norm. This allowed to install the structures without interfeering with the filtration activity and adapting them to the existing pipe blocks. They have been prefabricated and preassembled in order to reduce down to the bare minimum all the work on site. Structures have been built with composite pultruded profiles and isophtalic resin gratings type SCH 38/38_ IFR. Particular attention has been paid to the stress resistance, to the environmental aggressive conditions and the safety aspect (yellow color of the parapets).Due to the dielectric property of M.M. gratings, they are considered excellent insulators according to the EN 61340-2-3 and IEC 61340-4-5 norms of the electric field. www.mmgrigliati.com 2014 Copyright and property M.M. srl - Partial or total reproduction is forbidden if not specifically authorized.