Mexico. The company Pemex (Petróleos Mexicanos) reported that it will update its rules to suspend the use of cadmium as an anticorrosive coating for nuts, asparagus and screws that are used to build platforms and equipment that are exposed to the environment and marine fauna.
Pemex updated various reference standards (NRF-027 and NRF-032) to preserve the environment and eliminate the use of cadmium as an anticorrosive coating and use other polymer-based coatings, it published in a statement sent by the organization Por un México Justo to local media.
Luis Fernando Betancourt Sánchez, deputy director of Operational Discipline, Safety, Health and Environmental Protection of Pemex, indicated that the reference standard NRF-027 "relative to the minimum requirements of manufacture, materials, coatings resistant to corrosion, inspection and tests for the acquisition of asparagus and screws of tempered and tempered alloy steels and stainless steels, for joints in high and low temperature services, was updated under the amending project PROY-M-NRF-027-PEMEX-2009".
The use of cadmium as an anti-corrosion coating is no longer considered in the project.
As for NRF-032 that refers to "Piping systems in industrial plants-design and specification of materials", the Pemex executive explained that the standard was in public consultation until November 25, 2014, through PROY -M-NRF-032-PEMEX-2012, so it will return to the working group, so that substitutes for coatings other than cadmium are proposed for rigid and flexible slotted couplings between pipes.
