Page 378 - Improving Machinery Reliability

344 Improving Machinery Reliability

Executing the review tasks described on the preceding pages will be facilitated by
a series of checklists. These must be developed to help personnel conduct the
reviews and execute the various tasks in reasonably uniform fashion. First and most
important is a checklist restating every construction- and installation-related item
contained in the job specification documents. A typical checklist should look similar
to the one represented in Figure 1-36. Machinery startup review personnel must use
these checklists to verify that the installation complies with the job specification and
that it is ready for imminent startup. Having observed compliance or deviations, the
engineer, technician, or millwright should note his comments on the appropriate
completeness summary.
Figures 8- 1 and 8-2 represent completeness summary forms for centrifugal pumps
and general-purpose steam turbines. Similar summaries should be used for all other
categories of rotating machinery.

Assembling a Mechanical Procedures Manual

While performing the various startup review tasks, the review team can assemble
a large number of documents which may be helpful later to the plant maintenance
work forces.
Construction contractors executing large petrochemical projects are using a multi-
tude of written guidelines dealing with the installation of rotating equipment. Many
of these procedures describe future plant maintenance tasks and should, therefore, be
assembled as soon as possible. Machinery startup engineers should be aware of this
requirement and should assist the plant maintenance supervisor in identifying docu-
mentation to be collected and retained for future use. Table 10-4 represents a typical
cross section of documents originating from various sources: design contractors,
field contractors, startup engineers, manufacturer’s field representatives, etc. At the
termination of a major plant startup, these and other documents should be placed in a
so-called “Mechanical Procedures Manual” and given to plant maintenance person-
nel for future use and reference.

Machinery Startup Reporting Structure
The startup responsibilities outlined earlier in this chapter can be effectively dis-
charged by two organizations, one a mechanical startup section and the other a tech-
nical startup section. The technical startup section is manned by engineers and tech-
nicians with prior startup experience. Their task is to define all necessary steps
leading to successful commissioning and satisfactory long-term operation of rotating
machinery. The mechanical startup section is supervised by a machinery engineer