What is the passivation of a purified water system?
The equipment and purified water systems used in the Pharmaceutical, food, healthcare and power industries are designed so that product contact surfaces are not reactive, additive, or absorptive, this means that the purified water won’t be altered or changed in any way. The passivation of a purified
water system is concerned with the protection of stainless steel against corrosion and other damage by a naturally forming passive layer called the Chromium Oxide layer. If this is disrupted or damaged by cutting, welding, heating, grinding or through contact with chemicals, the stainless steel loses its protection against corrosion, thus impacting the purity of the water. The passivation of purified water systems is the necessary process whereby it is chemically treated to enhance and restore the ability of the treated surfaces to be resistant to corrosion. With Transflow, the passivation of a purified
water system is achieved by applying a strong oxidizing agent (nitric acid) or a chelating agent (citric acid) to the stainless steel for maximum results.
Our passivation of purified water systems services include:
Quality control with comprehensive RAMS, COSHH reports and support documentation.
High-quality equipment individual to each job – pumps, tanks, hoses, adaptors.
Ferroxyl test to confirm the presence of a passive layer after the process.
Off-site baths and immersion tanks with a clean room for drying, testing and wrapping.
Vessel entry/confined space access.
Optional derouging stage if required.
Professional cleaning services if required.
Paste passivation of small blemishes in clean rooms.
Control of waste chemicals and disposal according to Environment Agency legislation.
