Insulation Table.pdf

This document is a specification table for pipe insulation requirements, detailing minimum insulation thickness standards for steam and condensate piping systems across various nominal pipe diameters.

For steam pipe insulation, the specification establishes thickness requirements across three primary material types: Fibrous Glass (ranging from 3.5 to 5 inches depending on pipe diameter), Calcium Silicate (ranging from 4 to 6 inches), and Cellular Glass (marked with asterisks indicating equivalent performance alternatives). Insulation thickness increases with pipe diameter, with 1-inch to 2.5-inch pipes requiring 3.5 inches of Fibrous Glass or 4 inches of Calcium Silicate, while larger diameter pipes (8-16 inches) require 5 inches of Fibrous Glass or 6 inches of Calcium Silicate. For condensate pipe insulation, the specification provides minimum thickness requirements for Mineral Fiber (ranging from 2.5 to 3.5 inches) and Fibrous Glass (marked as acceptable alternatives). Condensate pipe sizes range from 1 inch to 18 inches in nominal diameter, with Mineral Fiber thicknesses of 2.5 inches for pipes up to 2.5 inches in diameter, increasing to 3 inches for 3-4 inch pipes and 3.5 inches for pipes 5 inches and larger. The specification includes performance equivalency provisions allowing Fibrous Glass and Cellular Glass materials to substitute for specified materials when they demonstrate insulating efficiency not less than the designated thickness of the alternative material.