Page 386 - Improving Machinery Reliability

352 Improving Machinery Reliability

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Figure 8-8. Equipment tabulation emphasizing coupling and mechanical seal data.

Figure 8-8 represents another modification of the basic equipment tabulation. This
time, the emphasis is on coupling and mechanical-seal data.
Pump outages experienced during pre-commissioning activities are logged in to
keep track of both duration and primary cause. Figure 8-9 represents a typical outage
log sheet with entries following a time sequence of events.
A different set of startup documentation is shown in Figures 8-10 and 8-1 1. These
figures represent an event log for major compressors and a trip/shutdown log for a
given machine, respectively. Note especially how Figure 8- 1 1, representative of
dozens of sheets generated during a major startup, affords an overview of several
important entries: purpose of run, discipline responsible for shutdown, duration of
shutdown, cumulative operating time, and downtime.
Figure 8-12 shows a checklist used for centrifugal-pump field installation and initial
operation. Used in conjunction with field-posted startup instructions (refer back to Fig-
ure 1-26), a similar checklist containing work items reflecting a given project philose
phy will go a long way toward reducing installation and commissioning oversights.