SSPC PROTECTIVE COATING INSPECTOR COURSE - LAST BATCH AND LAST CHANCE IN CHENNAI. 

High-pressure Water Jetting : It is also known as hydro-jetting which includes the process of cleaning and unblocking the drains comes under the surface preparation.

As the name implies, this technique involves the use of high-pressure water in order to clean remove the toughest of blockages

Water jetting methods are similar to wet abrasive blasting cleaning with Flash rust evidenced in the prepared surface. The main advantage of water jetting is to remove all contamination that includes chemical products (i.e. Salts). The best effective method for salt removal from the surface.

Advantages

It will restore existing surface profile (it will not damage the existing profile in maintenance project)

It will remove entire contamination

Very effective process

Disadvantages

It will not create a surface profile

Equipment cost is very high

High operator skill is mandatory

Highly dangerous due to high pressure involved

Type of Water jetting

Low-pressure water cleaning (LPWC) – below 5000 psi

High-pressure water cleaning (HPWC) – 5000 – 10000 psi

High-pressure water jetting (HPWJ) – 10000 – 30000 psi

Ultra-high pressure water jetting (UHPWJ) – more than 30000 psi