DNV will assess the set-up and control at the yard and major sub-contractors prior to the start of fabrication. We will carry out frequent surveys and audits to ensure that approved drawings and plans are being followed. The aim of the activities is to confirm that the unit is built in accordance with DNV class rules.

Purpose

Ensure that the unit being built is in compliance with approved design and governing rules and regulations.

Benefits

The fabrication survey and commissioning activities will ensure yards and owners that the unit is built in accordance with DNV class rules and relevant statutory requirements. A flexible regime applies the correct rules and criteria for either harsh environment or benign units. The fabrication survey and commissioning activities are the final steps to ensure that the structure satisfies the society’s requirements and can be entered into class.

Our approach

The DNV surveyor will approach quality monitoring by combining:

• Quality system evaluation (audit the performance of the builder’s QA/QC – system)
• Product surveys (inspections, test-survey of the product itself)

The two categories complement each other and both are considered necessary to ensure sufficient evidence of compliance with project requirements.

During the initial stage of the construction work, DNV will conduct audits to verify correct implementation of the yard’s quality system. Surveys at the main yard and sub-contractors facilities during the fabrication phase will typically consist of:

• Frequent spot checks of the quality system’s performance, with emphasis on verifying the yard’s fabrication processes and quality control
• Inspection of fit-up/edge preparation, preheating and welding procedures for important connections
• Final structural inspections
• NDT verification of structures and systems
• Pressure/leakage testing of structures and systems
• Survey of machinery and machinery systems, including certificates, installation onboard (tolerances, alignment, supports, etc.)
• Survey of pipes and piping systems (in shop and installation onboard)
• Survey of electrical installations including cable routing and testing onboard
• Installation inspections
• Functional/operational tests
• Evaluation of fabrication deviations and minor design modifications
• Incoming inspection of non-conforming materials and components.

The surveyors will keep a record of all scheduled and unscheduled inspections.