Construction & turnover

Long-lead equipment and systems are procured and fabricated. Supplier quality, factory acceptance testing, and the documentation package are set here — the evidence base later verification will leverage.

Purpose

Procure and fabricate equipment to specification, capturing the vendor evidence C&Q will reuse instead of repeating.

Work performed

• Issue purchase specifications traced to the detailed design and URS
• Qualify suppliers and embed quality, documentation, and FAT requirements in the contract
• Oversee fabrication and witness factory acceptance testing (FAT) of major equipment and systems
• Assemble the vendor turnover documentation package that commissioning and qualification will leverage

Who is involved

• Procurement, contracts, and vendor-management engineering
• Supplier-quality and the SMEs witnessing FAT
• Automation/CSV engineers for computerised and control systems (GAMP 5)

What quality owns

• Supplier qualification and the quality/documentation requirements in the purchase order
• Acceptance of the FAT evidence as leverageable for qualification

What engineering owns

• Purchase specifications, FAT protocols, and fabrication oversight
• The technical acceptance of the fabricated equipment against specification

What operations owns

• Input on operability and maintainability of the specified equipment
• Spare-parts and maintenance-documentation requirements

Management decisions

• Vendor and equipment award decisions
• Acceptance of long-lead commitments and their schedule risk

Deliverables

• Purchase specifications and qualified-supplier records
• Executed FAT protocols and reports
• Vendor documentation / turnover packages

Evidence to retain

• FAT protocols and results used to support qualification
• Supplier qualification and material/build documentation

Common risks

• A low equipment bid that omits documentation and FAT rights, forcing re-test in C&Q
• FAT run informally, so its evidence cannot be leveraged
• Vendor computerised systems delivered without GAMP-appropriate documentation

Gate criteria to advance

• Purchase specifications traced to the design and URS
• Supplier quality qualified and quality/documentation requirements in the contract
• Factory acceptance tests (FAT) executed with usable, complete documentation

Expensive if deferred

• Documentation and FAT rights in the contract — unrecoverable once the order is placed
• Supplier qualification — an unqualified supplier surfaces as rework and inspection risk later

Business effect

A contract that omits documentation and FAT rights forces C&Q to re-test from scratch — the classic hidden cost of a low equipment bid.

Greenfield vs brownfield

Greenfield procures a whole plant at once; brownfield procurement is smaller but must ensure new equipment is compatible with existing utilities and can be tied in without disrupting live production.

The facility, utilities, and equipment are built and installed under Good Engineering Practice. Installation records, weld/material documentation, and change control on field changes become the installation-verification evidence.

Purpose

Build and install to the design under GEP, generating the installation record installation qualification will rely on.

Work performed

• Construct the facility, utilities, and equipment to the approved design under Good Engineering Practice
• Capture installation, weld, material, and passivation documentation contemporaneously
• Manage field changes through construction change control and reflect them in as-built records
• Perform GEP inspections and progressively build the installation-verification evidence

Who is involved

• Construction management, contractors, and site engineering
• Quality/CQV oversight of GEP and documentation practices
• Commissioning team beginning system walkdowns and punch listing

What quality owns

• Confirmation that field changes are controlled and the as-built record stays trustworthy
• The standard the installation documentation must meet to support installation qualification

What engineering owns

• Construction to the design under Good Engineering Practice
• The completeness and accuracy of installation, weld, and material records

What operations owns

• Early familiarisation and input on installed access and maintainability
• Identification of operability issues while they are still cheap to fix

Management decisions

• Approval of field changes and their impact on cost, schedule, and design intent
• Acceptance of construction progress against the completion plan

Deliverables

• As-built drawings and installation records
• Weld/material/passivation and GEP documentation
• Construction change-control log

Evidence to retain

• The as-built record and installation documentation supporting IQ
• Weld and material certifications for product-contact and utility systems

Common risks

• Undocumented field changes that break the as-built record
• Installation documentation captured too late or incompletely to leverage
• GEP not applied, so systems must be re-worked before they can be qualified

Gate criteria to advance

• Construction to the approved design under Good Engineering Practice
• Installation, weld, and material documentation captured contemporaneously
• Field changes controlled and reflected in as-built records

Expensive if deferred

• Contemporaneous installation documentation — impossible to reconstruct faithfully once trades leave
• Field-change control — undocumented changes become qualification and inspection findings

Business effect

Undocumented field changes break the as-built record and surface as qualification findings and inspection risk long after the trades have left.

Greenfield vs brownfield

Brownfield construction happens inside a live, licensed facility: tie-ins, shutdowns, and contamination controls must protect adjacent production, and every change is assessed against the existing validated state — greenfield builds on an empty site.

Systems reach mechanical completion and are formally turned over from construction to commissioning, with turnover packages, punch lists, and the documentation handover that keeps the evidence trail intact.

Purpose

Formally hand systems from construction to commissioning with a complete, verified turnover package.

Work performed

• Confirm mechanical completion of each system against the design and P&IDs
• Assemble and verify system turnover packages (drawings, records, certifications)
• Walk down systems, raise and categorise punch-list items, and manage them to closure
• Formally transfer care, custody, and control from construction to commissioning

Who is involved

• Construction and commissioning leads executing the handover
• Quality/CQV confirming documentation completeness for later verification
• System owners accepting custody for commissioning

What quality owns

• Confirmation that the documentation trail is intact across the handover
• The completeness standard a turnover package must meet before commissioning starts

What engineering owns

• Verification of mechanical completion against the design
• Assembly and technical acceptance of the turnover packages

What operations owns

• Early acceptance walkdowns and input on punch-list priorities
• Readiness to receive systems for operation downstream

Management decisions

• Acceptance of mechanical completion and authorisation to begin commissioning
• Disposition of open punch items and their impact on the commissioning start

Deliverables

• Mechanical-completion certificates
• System turnover packages
• Punch lists and their disposition records

Evidence to retain

• Accepted turnover packages and mechanical-completion records
• The punch-list closure trail

Common risks

• A sloppy turnover that breaks the documentation trail
• Incomplete packages that force commissioning to reconstruct evidence
• Punch items deferred into commissioning and then lost

Gate criteria to advance

• Mechanical completion confirmed against the design
• Turnover packages complete and accepted, with punch lists managed
• Documentation trail intact through the construction→commissioning handover

Expensive if deferred

• Turnover-package completeness — reconstructing it later burns the commissioning schedule
• Punch-list discipline — deferred items resurface as qualification findings

Business effect

A sloppy turnover is where the documentation trail breaks; commissioning then spends its float reconstructing evidence instead of testing systems.

Greenfield vs brownfield

On brownfield work the turnover also has to confirm that tie-ins to existing systems are complete and that adjacent live operations were not disturbed — a handover dimension greenfield does not face.