Ingenieur Vol.72 ingenieur October 2017-FA3 | Page 63

Potential Problems
Construction and Commissioning Phases Analysis
i) How we would like it to be…..
Construction
Completion
Mechanical
completion
Initial/Provisional
Acceptance
Construction
Final
Acceptance
Commissioning and
Start up (CSU)
Performance Test
Operation
Post
Commissioning
Defect Period
ii) How it happens……
Construction
Completion
Construction
Mechanical
Completion
Initial/Provisional
Acceptance
Final
Acceptance
Pre-Commissioning,
Inspection and Testing
Partial/SubMC
Commissioning
System MC
and Start-up (CSU)
Reinstatement
Performance Test
Operation
Post –Commissioning
Defect Liability Period
Figure 6: The Mechanical
Completion
Sequence
Figure 6:
The Mechanical
Completion Sequence
The Mechanical Completion Sequence (Figure 6) indicates how the conceptual and
planning versus the actual MC execution during construction and commissioning
phases vary. It recognised that MC standardization and systematic execution should
be in place before any construction completion hand over can be released for
commissioning. The interfacing construction and commissioning roles in the MC
system are well organised as a transition handing over process to avoid any
misleading start-ups and operations.
The danger of no proper hand over between construction and commissioning can
create problems in the overall project milestones, especially in a critical area such as
safety and could even result in an explosion in a newly constructed plant. During these
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