Page 288 - Root Cause Failure Analysis
P. 288
27
STEAM TRAPS
Most of the failure modes that affect steam traps can be attributed to variations in
operating parameters or improper maintenance. Table 27-1 lists the more common
causes of steam trap failures.
Operation outside the trap’s design envelope results in loss of efficiency and may
cause premature failure. In many cases, changes in the condensate load, steam pres-
sure or temperature, and other related parameters are the root cause of poor perfor-
mance or reliability problems. Careful attention should be given to the actual versus
design system parameters. Such deviations often are the root causes of problems
under investigation.
Poor maintenance practices or the lack of a regular inspection program may be the
primary source of steam trap problems. It is important for steam traps to be routinely
inspected and repaired to assure proper operation.
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