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Fundamentals of Corrosion
which makes it suitable for selection where mechanical durability is
a consideration. It can withstand vibration and mechanical/thermal
shock.
ExPe is only slightly absorptive and does not promote corrosion
of carbon steel surfaces. Suppliers should advise if properties are
retained after being subject to operating conditions. It retains its
modest absorptive properties for temperatures up to 600ºF. However,
proper moisture barriers and jacketing are still important, especially
when used in flammable liquid services, wet climates, wash-down
areas, and areas susceptible to leaking. Its high silica content makes
ExPe suitable over austenitic stainless steels in areas where chlorides
may invade the insulation system.
3. GlFi: glass fiber (fibrous insulation):
Its wide temperature range of −20 to 1200ºF makes it suitable for
use in some cold services, some high-temperature services, and some
dual temperature services. When used in cold services, it requires a
vapor barrier.
GlFi has low compressive strength and is susceptible to damage.
It should not be used in heavily trafficked areas. It is suitable, however, for use in vibrating service. It is highly absorptive and can promote corrosion of carbon steel surfaces. Proper moisture barriers and
jacketing are important especially when used in flammable liquid
services, wet climates, wash-down areas, and areas susceptible to
leaking. It is not recommended for use over austenitic stainless steels
or in areas where chlorides may invade the insulation system.
4. MiFi: mineral fiber (fibrous insulation):
Fibrous insulation is suitable for use in hot services up to 1200ºF,
and is usually the lowest cost system in this temperature range. It
possesses low compressive strength and is therefore susceptible to
damage; however, it is suitable for use in vibrating service.
MiFi is highly absorptive and can promote corrosion of carbon
steel surfaces. Proper moisture barriers and jacketing are important,
especially when used in flammable liquid services, wet climate,
wash-down areas, and areas susceptible to leaking. It is not recommended for use over austenitic stainless steels or in areas where
chlorides may invade the insulation system.
5. UrFo: polyurethane/polyisocyanate foam (cellular insulation):
Its low temperature range, excellent K factor, and competitive cost
recommend polyurethane/polyisocyanate foam for use in cold service and chilled water applications. When used in cold service, it
requires a vapor barrier.
It possesses low compressive strength and should not be used
in areas of mechanical abuse, vibration, and mechanical or thermal
shock.
Fundamentals of Corrosion
which makes it suitable for selection where mechanical durability is
a consideration. It can withstand vibration and mechanical/thermal
shock.
ExPe is only slightly absorptive and does not promote corrosion
of carbon steel surfaces. Suppliers should advise if properties are
retained after being subject to operating conditions. It retains its
modest absorptive properties for temperatures up to 600ºF. However,
proper moisture barriers and jacketing are still important, especially
when used in flammable liquid services, wet climates, wash-down
areas, and areas susceptible to leaking. Its high silica content makes
ExPe suitable over austenitic stainless steels in areas where chlorides
may invade the insulation system.
3. GlFi: glass fiber (fibrous insulation):
Its wide temperature range of −20 to 1200ºF makes it suitable for
use in some cold services, some high-temperature services, and some
dual temperature services. When used in cold services, it requires a
vapor barrier.
GlFi has low compressive strength and is susceptible to damage.
It should not be used in heavily trafficked areas. It is suitable, however, for use in vibrating service. It is highly absorptive and can promote corrosion of carbon steel surfaces. Proper moisture barriers and
jacketing are important especially when used in flammable liquid
services, wet climates, wash-down areas, and areas susceptible to
leaking. It is not recommended for use over austenitic stainless steels
or in areas where chlorides may invade the insulation system.
4. MiFi: mineral fiber (fibrous insulation):
Fibrous insulation is suitable for use in hot services up to 1200ºF,
and is usually the lowest cost system in this temperature range. It
possesses low compressive strength and is therefore susceptible to
damage; however, it is suitable for use in vibrating service.
MiFi is highly absorptive and can promote corrosion of carbon
steel surfaces. Proper moisture barriers and jacketing are important,
especially when used in flammable liquid services, wet climate,
wash-down areas, and areas susceptible to leaking. It is not recommended for use over austenitic stainless steels or in areas where
chlorides may invade the insulation system.
5. UrFo: polyurethane/polyisocyanate foam (cellular insulation):
Its low temperature range, excellent K factor, and competitive cost
recommend polyurethane/polyisocyanate foam for use in cold service and chilled water applications. When used in cold service, it
requires a vapor barrier.
It possesses low compressive strength and should not be used
in areas of mechanical abuse, vibration, and mechanical or thermal
shock.