The piping of this system must be d

The piping of this system must be drainable to the main pluvial drainage network during the normal operation of the systems and processes. In the event of a leak in the piping, a closing device must be implemented towards the pluvial drainage, until the remediation and final disposal of the product of the leak.Chemical wastes that, due to their nature and acid concentration, attack Construction Materials traditionally used in pipes and collection pits, must be neutralized and treated in accordance with the provisions of Section 7.3.8.The material of the pipes that lead the chemical drains must be in accordance with the provisions of Section 7.3.6.The reinforced concrete neutralization pit must be covered for protection against the corrosive effect of chemical effluents in accordance with the provisions of section 7.3.8.