Further discussion of the five
commissioning plan phases
specifically addresses the data
center ICT cabling infrastructure.
To help identify specific tasks
involved in the commissioning
process a symbol is used.
FIGURE 2: The five commissioning phases.
10 I ICT TODAY
Phase 1: Program or
"Pre-design" Phase
Phase 3:
Construction/
Build Phase
CLOSING
Phase 5:
Post
Acceptance
Phase
Phase 4:
Acceptance
Phase
Phase 2:
Design/
Planning
Phase
PreTerm
vs. Field
vs. Hybrid
Within the phases (Figure 2) are the industry-recognized 5-stage
“commissioning test” processes that are used for carrying out the
inspection-testing procedures applicable to each phase of the
commissioning plan:
• First Stage: Factory Witness Testing
• Second Stage: Site Acceptance Inspection
• Third Stage: Pre-Functional Testing
• Fourth Stage: Functional Performance Testing
• Fifth Stage: Integrated Systems Testing