Solutions / Engineering guide
Wind Turbine Factory & Site Acceptance: Evidence Planning
Factory and site acceptance answer different questions about an equipment package. Define what can be demonstrated before dispatch, what depends on the installed project and which evidence the parties require at each stage.
Assign each acceptance question to the appropriate stage.
Use the agreed specification and actual configuration to define assessment scope, responsibilities and evidence.
01 / Purpose
Separate location from the question being assessed.
A factory-stage assessment concerns the package and setup available before delivery.
A factory-stage assessment concerns the package and setup available before delivery. A site-stage assessment concerns the supplied equipment in its installed project context. The labels alone do not identify tests, criteria or the evidence accepted by the buyer.
IEC 62381 publicly describes factory and site acceptance planning for automation systems in the process industry. It illustrates agreed scope and responsibilities; it is not a wind-turbine certification claim or an automatic requirement for a MARSTON purchase.
02 / Factory scope
Identify the actual package available before dispatch.
State which turbine components, controller, converter and other proposed items are present in the assessment setup.
State which turbine components, controller, converter and other proposed items are present in the assessment setup. If connected equipment or inputs are represented rather than actually installed, record that limitation. A document review, inspection and functional observation provide different types of evidence.
Keep the tested identities and configuration revisions with each result. Do not assume a factory assessment includes a complete operating rotor, a live grid connection or all project devices. No fixed factory-test programme is promised on this page.
03 / Site scope
Identify the questions introduced by installation.
The installed tower, cable routes, local connection and actual third-party equipment may introduce interfaces absent from the pre-delivery setup.
The installed tower, cable routes, local connection and actual third-party equipment may introduce interfaces absent from the pre-delivery setup. Identify which agreed questions can only be assessed in that context and which responsible party provides the prerequisite installation records.
Link site acceptance to the project specification and installed configuration. The commissioning guide covers handover planning; this page compares the evidence boundaries between the two stages rather than provide site test operations.
04 / Criteria
Agree how observations support an acceptance decision.
For each requested assessment, identify the requirement, applicable method, configuration, evidence to retain and acceptance owner.
For each requested assessment, identify the requirement, applicable method, configuration, evidence to retain and acceptance owner. Distinguish a measured result from the judgement made against an agreed criterion. A check mark without its basis does not explain what was demonstrated.
Where a test needs conditions not available at one stage, record whether it is deferred or addressed by other applicable evidence. Do not silently convert an unperformed assessment into a passed item. Any operational or electrical tests require the authorised package-specific plan.
05 / Changes & gaps
Track configuration changes between assessment stages.
Keep a register of changes after the pre-delivery assessment, including substitutions, approved settings or interface changes where relevant.
Keep a register of changes after the pre-delivery assessment, including substitutions, approved settings or interface changes where relevant. Ask the responsible parties whether previous evidence remains applicable and which questions need further review.
Outstanding items should identify the issue, owner, required evidence and agreed closure condition. A successful factory result does not automatically cover a later variant; a site issue also needs its own evidence before attributing it to a supplier or installation action.
06 / Commercial record
Define acceptance scope within the proposal.
A technical quotation should state the requested assessments, participant responsibilities, available setup and documentation scope.
A technical quotation should state the requested assessments, participant responsibilities, available setup and documentation scope. Keep approval, witness or review arrangements and any agreed delivery conditions explicit. These are commercial questions, not universal requirements imposed by this guide.
For a MARSTON enquiry, identify the turbine model, separately supplied devices and the project acceptance needs. Request a feasible assessment proposal and applicable evidence. This page promises no existing factory test, customer witness arrangement, certification or guaranteed site result.
Continue the review with Wind Turbine Vibration & Rotor Balance: Record Review.
Continue the review with Wind Turbine Controller Supply: Prepare a Separate Enquiry.
Continue the review with Wind Power Converter Supply: Define the Purchase Boundary.
Further project guides: Small Wind Turbine Standards: Scope, Versions & Evidence · Wind Project Engineering Documents: Revisions & Review Status.
General background: IEC 62381 public scope: process-industry factory and site acceptance planning. These references explain industry concepts; they are separate from the applicable MARSTON product and project documents.
Prepare the information for this review.
Use the checklist to organise the project information. Mark unavailable items and retain document references.
| Review item | Information to provide | Purpose |
|---|---|---|
| Requirements | Acceptance questions linked to the agreed specification | Identify the decision to support. |
| Factory setup | Actual devices, versions and represented interfaces | Define pre-delivery evidence limits. |
| Site setup | Installed configuration and prerequisite records | Identify installation-dependent questions. |
| Assessment basis | Applicable method, criterion and acceptance owner | Separate result and judgement. |
| Change register | Deferred items, revisions, evidence and closure owner | Keep stage-to-stage applicability traceable. |
Engineering questions.
Is factory acceptance the same as site commissioning?
No. Their configurations and assessment questions can differ. Define the scope and evidence required at each stage.
Does a factory check prove the complete installed system works?
Only the assessed setup and scope are supported. Installation-dependent interfaces need their applicable review.
Is IEC 62381 presented as MARSTON certification?
No. It is referenced only as process-industry acceptance-planning context, not wind-turbine certification or an imposed purchase requirement.
Does this page promise a standard factory-test programme?
No programme or test capability is assumed. Agree a feasible scope for the actual quotation.
How should an assessment that was not performed be recorded?
Identify it as deferred or outstanding with an owner, required evidence and closure basis; do not mark it passed.
What belongs in an acceptance enquiry?
The actual supplied devices, project specification, requested factory and site questions, criteria, records and participant responsibilities.
Technical enquiry
Bring your project information to the discussion.
Factory and site acceptance answer different questions about an equipment package. Share the available information and the equipment scope you want reviewed in a technical quotation.