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 MECHANICAL
Boilers-Continued
incomplete
untimely
n Steam Gage: improperly calibrated. Recalibrate:
n Boilers Secured or Stored:
Wet Lay-up
incompletely filled
improper pH and sulfite concentration
Dry Layup
not completely dry
inadequate supply of desiccant
improper or inadequate placement of desiccant
n Waterside Metal Surfaces:
evidence of oil. Report presence of oil
indications of scale. Report location, amount, density, degree of
hardness, and age of scale
n Plates:
cracks
defective joints
distortion
erosion
excessive corrosion
grooving
lap seam cracks
cracked or severely corroded rivets
cracked welds
Determine minimum thickness and calculate new maximum
allowable working pressure
n Stays and Braces:
cracks
bends
looseness
6-9
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