Q - Why VCI technology for boilers and related components?
A - Vapor Corrosion Inhibitors (VCI) function by releasing or vaporizing
into the air space and laying out on all the metal surface a protective
film.This technology is ideally
suited for dry lay-up (although wet lay-up is possible) and can protect
for up to two years!Anytime a
boiler or related equipment is non-operable and can be drained, VCI technology
is an excellent choice.
Q - Can I inspect the boiler with this material inside?
A - The vapors are not hazardous.However, it is suggested that appropriate vessel entry safety
procedures be followed.Protective clothing should be worn to avoid/minimize skin contact
with any residual product in the boiler.
Q - Can I start-up the boiler with this material inside?
A - Yes, the products are water soluble.Ideally, a fill & flush would be performed prior to start-up
but is not absolutely necessary.Boilers with a history of foaming and carryover problems should
fill & flush first.
Q - How do I determine dosage?
A - Dosage is determined strictly based on system volume unless
Q - How do I assess performance?
A - Corrosion coupons have been used or you can simply visually inspect
the boiler routinely.A
retractable corrosion coupon holder can be rigged if vessel opening is
not desired or practical.
1. VCI products contain inhibitors which sublime or emit into the air
space.In order to ensure all
metal surfaces are protected, enough VCI product must be added so that
enclosed air space is saturated with gaseous VCI molecules.This vaporizing ability enables VCIs
to protect metals without direct application to the metal surface.
A close up view illustrates how the VCI molecules layout onto the the
metal surface (as a barrier) once equilibrium/saturation is reached in
the vapor space.The slightest
amount of moisture will wet & ionize the molecules to form a barrier
that will effectively protect metal surfaces for up to two years.