Products > Thermal Insulation > Thermal-Wrap vs. MRI Thermal-Wrap® vs. Metal Reflective Insulation Choosing The Right Insulation   Thermal-Wrap Blanket Metal Reflective Insulation ECCS Compatibility   USNRC and NEI testing has shown that MRI has a much lower blockage potential than fibrous insulation.  Destructive pressure for Transco metal reflective is 190 psi versus 10 psi for blanket insulation. Heat Loss Both systems are highly capable of meeting specified heat loss limits.  Generally, the same heat loss provided by 85 mm of Transco Thermal-Wrap blankets can be achieved with approximately 105 mm of Transco MRI. Ease of Installation Blanket insulation is lighter and easier to handle, but requires two-piece installation (blankets first, then stainless steel jacketing). Transco MRI features one-piece cassette configuration. Durability   Transco MRI is more durable when subjected to walk loads. And when subjected to steam or water spray, the 100% stainless steel configuration is resistant to damage. Cost The initial cost of Transco Thermal-Wrap® blankets is generally less than for Transco MRI. Total installed cost for the two systems over the life cycle of the plant is comparable.   Nuclear Environment   Due to the 100% stainless steel construction of Transco MRI, it is virtually unaffected by the nuclear plant environmental conditions of heat, radiation, chemicals and contaminants.