UFC 4-390-01
23 July 2003
h)
Applicable acceptance standard
i)
Reference block identification
j)
Discontinuities that exceed the DRL (Disregard Level)
k)
Acceptance or rejection
l)
Signature of inspection personnel and date
m)
If supplemental ultrasonic inspection techniques are
used that contribute to the final inspection results, they
should be recorded
B.4.3.7 Heat Treatment Procedures and Records. Copies of the
procedures and records of all heat treatments performed on the
chamber should be attached to the Manufacturer's Data Report.
B.4.3.8 Charpy Impact Test Data. When Charpy Impact testing of
materials is required by the applicable commercial code, a copy
of the Charpy Impact Test data should be attached to the
Manufacturer's Data Report.
B.4.3.9 Material Repair Report. A report on repairs of any
defects in the materials used for the fabrication of chambers
should be attached to the Manufacturer's Data Report.
B.4.3.10 Technical Manual. Each pressure vessel system should
be supplied with all operating, maintenance, technical and parts
manuals and instructions necessary for the safe operation of all
devices or components supplied with or part of the pressure
vessel system.
B.5
MATERIAL SELECTION
Selection of the proper materials to be used in the manufacture
of pressure vessels is critical to ensuring system safety. The
specific end use of each structural component must be evaluated
on the basis of its operating environment, life expectancy and
intended use. The use of inappropriate material in a pressure
vessel may result in a catastrophic failure and cause fatal or
critical injury to personnel and substantial damage to property.
B.5.1 Corrosion. Corrosion effects must be considered during
the initial selection of the material and throughout the design
process. The following list represents typical types of corrosion
that must be considered:
a)
Electrolytic corrosion - stray electrical currents that
can accelerate corrosion.
b)
Crevice corrosion - crevices in or between materials
retard the formation of oxide film within these crevices.
71
Previous Page
