Detailed Engineering Solutions

Commissioning & Startup Support

Pre-commissioning, commissioning, and startup advisory for safe handover

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Technical overview

Commissioning &
Startup Support

Commissioning and startup represent the highest-risk period in a plant's lifecycle — incomplete punch items, untested interlocks, and inadequately trained operators are the recurring precursors to first-year incidents. Arborion Global embeds structured Pre-Startup Safety Review (PSSR) discipline, manages the system-by-system turnover process, and supports phased process introduction to ensure the plant enters operation in a verified, documented, and safe condition. Our engineers have hands-on experience commissioning process units across oil and gas, chemicals, and power generation.

Commissioning & Startup Support — Overview
Engineering process

Commissioning & Startup Support workflow

Commissioning Strategy

Define MC, pre-commissioning, commissioning, and startup phases; assign system boundaries and completion milestones.

Pre-Commissioning

Mechanical completion checks, system flushing, hydrostatic testing, instrument calibration, and preservation verification.

Pre-Startup Safety Review (PSSR)

Systematic PSSR per OSHA/CCPS checklist; identify and close punch items before any process introduction.

System Commissioning

Instrument loop checks, interlock and ESD function testing, DCS/SIS configuration verification, and control tuning.

Startup Ramp-Up

Phased process introduction against pre-agreed ramp schedule; monitor performance, address snags, verify acceptance criteria.

Performance Testing & Handover

Execute contractual acceptance tests; compile as-built documentation package; issue formal handover certificate.

Commissioning & Startup Support — Scope
Scope of work

Every deliverable — from basis to handover

Complete Commissioning & Startup Support scope — every calculation, drawing, specification, and construction support activity.

Commissioning execution strategy: phase definitions, system boundaries, and completion milestones
Pre-commissioning: mechanical completion checks, flushing, hydrostatic testing, and instrument calibration
Pre-Startup Safety Review (PSSR) per OSHA/CCPS — systematic checklist and punch-list management
Instrument loop checks and ESD/F&G function testing with documented test records
DCS/SIS configuration verification against approved cause-and-effect matrix
Control-loop tuning and response verification against performance acceptance criteria
Phased process introduction with ramp schedule, monitoring matrix, and hold criteria
Performance testing against contractual guarantees; formal handover package compilation
Engineering outcomes

Outcomes of Commissioning & Startup Support

Safe Startup & PSSR Completeness
  • Embeds PSSR discipline before startup
  • Identifies safety gaps before introduction
  • Bolsters operator readiness
  • Reduces startup incident frequency
OSHA PSM / IEC 61511 Commissioning Defence
  • Tracks to OSHA PSM PSSR element
  • Documents commissioning per CCPS
  • Supports performance test acceptance
  • Stands up to AHJ inspection
Commissioning Schedule & Punch-List Quality
  • Compresses startup time and cost
  • Strengthens operator competency
  • Improves first-year reliability
  • Builds documented commissioning record
Startup Duration & Rework Cost Reduction
  • Reduces startup delays and rework
  • Avoids early-life equipment failure
  • Supports faster time-to-market
  • Improves performance guarantee defence
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