Document n9pE0v0q3z57KRb9Ze1dQJ2OX

DOUBLE LAYER HI-TEMP APPLICATION SECTION 2 Page 5 PREPARATION- (contd) 2A2 The equipment and duct work whall be cleaned of all scale, rust, dirt, grease, etc. 2A3 If the equipment or duct work requires insulation supports, other than insul-pins, the location of the supports shall be marked and the crafts involved notified. 2A3.1 If insul-pins are required to support insulation, the equipment or duct work shall be laid! out and the pins installed as follows: a) For flat heads of cylindrical vessel see paragraph 4A1.2 - Section 1 (single layer application). b) For square equipment see paragraphs 5A1.1 and 5A1.2 Section 1 (single layer application). c) For duct work see paragraphs 5B2 through 5B3.2 Section 1 (single layer application). 3. INSULATION SUPPORTS NOTE: Insulation supports are used to hold or assist in holding the basic insulation in place. 3A TYPES OF SUPPORTS