Document Z4Ow3232BMmDO6dOjrJk4v18Y

SINGLE LAYER SECTION 1 HI-TEMP APFETCATTON Page 18 SHELL INSULATION (cont'd.) 4B2.3 The blocks shall be scored 2 times for vessels having an O.D. of 48" or less and one time for vessels over 48" O.D. (See figures 14 A & B) 4B2,4 The blocks shall be applied with all joints butted tightly together and the end joints staggered 18". The 1st.course shall be applied with the alternate blocks 18 and 36 inches long. (See figure 15)