Shell Manholes
Manholes shall be installed within the following tolerances:
a) specified projection from outside of shell to extreme face of flange, ±13 mm (1/2 in.)
b) elevation and angular location, ±13 mm (1/2 in.)
c) flange tilt in any plane, measured across the flange diameter, ±13 mm (1/2...
Local Deviation from the design form for the shell (horizontally and vertically) shall not exceed the following when measured over gauge length of 2.5 m remote from weld seam: What does this means can you help me?
Can somebody help me how to check for banding and what is the purpose of it and is it checked inside of the tank ( horizontal weld) or its better to check outside shell plate ( horizontal seam)?
