Quantcast Boilers-Continued - mo322_20094

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MECHANICAL
Boilers-Continued
n Tubes:
excessive reduction in thickness
bulges
cracks
defective welds
erosion
corrosion
waste pockets
scale
distortion
n  Ligaments: broken, cracked, leaks:
n Drumheads: cracks, deformation, excessive corrosion:
n Flanging: grooving:
n Soot Blowers:
worn, loose, or inadequate bearings and parts
incorrect alignment of nozzles
excessive scouring of refractory baffles
incorrect blowing ranges
inadequate traps
condition of packing
signs of direct impingement of steam on tubes
n Fireside Surfaces or Gas Passages:
steam pockets
corrosion
bulging
blistering
distortion
deformation
excessive burning action
6-11





 


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