Q. Cold service insulation on pipe?
Factory fabricated sectional pipe insulation shall be applied in staggered joint construction. On multiple layer construction, all joints shall be lapped one half of each section between layers such that all joints are staggered. In the top layer, all joints shall be buttered with joint sealant and fastened in place with bands using two per section or on a maximum of 450 mm centers. The insulation is to be liberally covered with vapour barrier prior to being covered with metal jacketing lapped a minimum of 50 mm on all seams.
Jacketing shall be secured with bands, located at each lap joint and spaced a maximum of 300 mm on center. Vertical jacketing shall be supported with "S" clips.