Corrosion; Safety - Pentair 80E User Manual

Considerations relating to corrosion are an important factor in vessel application. Corrosion can
result in catastrophic failure and / or cause difficulty in removing head components from the
shell. Correct component material selection is essential for safe long-term use. Although the
process fluid is the main consideration, external environment conditions should also be taken
into account.
All reasonable precautions should be taken to protect head assemblies from external wetting,
particularly in corrosive atmospheres (e.g. salt-water areas or acid atmosphere such as near
lead acid battery arrays, etc.) Leaks from vessel or nearby components, which allow head parts
to be routinely wetted, should not be tolerated.
The following typical list of CodeLine model 80E pressure vessel components indicating the
standard material of construction of each part is listed from page nos. 7 – 10. An evaluation of
the possibility of corrosion damage to the metal head interlock components is of critical
importance. Alternate materials are available upon requests.
Pressure vessel may cause loss of life, severe bodily harm or property damage
Safety in service of fiberglass vessel depends on proper application, installation, operation and
maintenance. This section is intended to provide guidance towards safe system design. The
safety information given in the installation and operation and maintenance section should also be
studied and used appropriately in conjunction with the precautions listed below.
Design Considerations for Safety
Fluid Compatibly
The materials of construction selected must be compatible with the process fluid and with
proposed preserving and cleaning fluids. Standard materials are listed on the engineering
drawings. In case where the standard materials are unacceptable, suitable alternative may be
available.
Pressure and Temperature design limits
Operation of a vessel outside its design limits will void the warranty and would result in vessel
fatigue with possible eventual catastrophic failure. Although each CodeLine 80E model vessel is
tested as per ASME/CE specifications, long term operation above the designed pressure must
be prevented. For permeate port pressure rating and maximum operating temperature, refer
respective sales drawings.

CORROSION

SAFETY

CAUTION
if not correctly installed, operated, and maintained.
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