NDT Before and After Plant Relocation: An Inspection Planning Checklist

Define what the inspection needs to establish

“Inspect this machine before it moves” does not tell an inspector which question to answer. Identify the asset, its configuration and component numbers, where it is now and where it is going. Is the aim to investigate an existing indication, establish a condition baseline, or compare condition after arrival? A condition assessment can help frame the evidence needed for a specific asset, but the inspection brief should still state the decision it will inform.

Record known damage, repairs, modifications and previous findings. Agree the components, welds or other examination areas to include, preferably against drawings, photographs or a weld map. Check available manufacturer information and any applicable acceptance criteria for the asset and nominated scope. Name the person who will decide what happens when a finding needs review; do not assume that an inspector's observation is an engineering determination.

Ask which locations may become inaccessible once the plant is packed, lifted into position or reassembled. A condition record describes observations and limitations at a point in time. A determination about load capacity, suitability for a proposed lift or fitness for operation requires an appropriate separate assessment. Agreeing this boundary early helps the owner, engineer and relocation team request useful evidence rather than an undefined 'pass'.

Establish a baseline before dismantling or loading

Assemble asset and component identifiers, dated photographs with repeatable views, and location references that another team can use at the destination. Keep relevant drawings, weld maps, prior reports and repair records with the baseline. Note existing observations and unresolved findings separately from new results so neither is mistaken for a change caused during the move.

A useful report says which locations were examined, by which method, on what date, and what could not be reached. If surfaces are coated, dirty or partly concealed, record the condition and its effect on coverage. These details matter as much as a measurement when the receiving team needs to compare like with like. The equipment inspection preparation checklist offers more detail on access, records and surface considerations.

Plan access at the relevant windows: while the assembled asset can still be seen, when dismantling exposes selected parts, and before protective coverings hide them. A fabricated assembly may have welds accessible only after separation; a piece of mining plant may have different access limits when parked and when partly dismantled. The right sequence depends on the work plan, safe access arrangements and the question being asked. Capture the reference view and component location before labels or orientation marks are obscured.

Decide where targeted NDT adds value

Visual examination is a useful starting point, but targeted NDT can help investigate a known indication, a selected weld, suspected cracking or a thickness concern. Choose a method only after considering material, geometry, likely damage, surface condition, access and the required decision. Non-destructive does not mean unlimited coverage: every method has a defined examination area and practical limits.

For example, a surface technique may help examine an accessible steel weld suspected of cracking, while ultrasonic examination may address an agreed internal-flaw or wall-thickness question where geometry permits. Neither example makes that method mandatory for all plant moves. Agree what results will be compared, how locations will be identified and whether a change in access after dismantling calls for a different technique. See the comparison of crack detection methods for method-specific limits.

Do not assume a standard testing percentage, universal acceptance limit or identical pre- and post-move examination. Set coverage and criteria for the particular asset and objective; if the brief changes, document the changed scope rather than presenting unequal examinations as a direct comparison.

Coordinate inspection with the relocation programme

Inspection is one interface in a wider project. The asset owner can nominate the decision-maker and share history; the inspector can confirm examinable locations, coverage and reporting limits; the responsible engineer can interpret findings where a capacity or suitability decision is required. The dismantling team must know when access is needed, while the lifting contractor and transport provider plan their own work using the information appropriate to their responsibilities. The receiving team needs the baseline and a way to report arrival observations.

Agree hold or review points before covering a component, loading it or proceeding with reassembly. Provide findings early enough for the responsible party to assess them, without treating an NDT report as a lift plan or transport approval. The roles below are illustrative: actual contractual and statutory responsibilities must be confirmed for the project, and inspection information should be passed on with its limitations intact.

For the wider movement plan, Australia Network’s asset relocation planning guide outlines questions about route access, lifting interfaces and contractor handovers.

Compare condition after arrival and reassembly

At the destination, match the asset and component identifiers to the baseline before comparing results. Review delivery observations, packaging condition and any reported handling incident. Photograph the same documented locations and orientation where practical; record if parts were replaced, cleaned, recoated or reassembled in a way that changes what can be examined.

Compare the agreed locations and findings, not simply the headline conclusions of two reports. Capture new observations, changed measurements, inaccessible areas and differences in method, preparation or examination coverage. Understanding inspection findings and limitations helps when reading the reports side by side. A difference is not automatically proof of transport damage or responsibility: access, surface condition, probe position and measurement uncertainty can change the result.

Escalate an unexplained change to the responsible reviewer for assessment. The agreed scope can then identify whether a targeted repeat examination, complementary method or other investigation is needed. Some moves warrant a pre-move baseline and a visual arrival comparison; others may justify additional NDT at one or both stages. There is no assumption that every asset needs identical tests before and after transport.

Close out findings before the next project stage

An inspection report records an indication or measurement within its stated scope; it does not decide every action that follows. Keep a simple outstanding-items register showing the asset and location, the finding, who will review it, the required action and the evidence needed to close it. Link the register back to photographs and report references so the receiving team can see what was resolved and what remains open.

Where findings affect structural suitability, structural engineering assessment may be needed to interpret evidence and determine an appropriate disposition. Repair verification, further examination and operational release may each be separate activities with different responsible parties. Do not erase an unresolved item because a different component had a satisfactory result.

Retain both pre-move and post-move records, including amended scopes and limitations, as part of the asset history. The checklist below is a planning aid, not a statutory form, inspection certificate, lifting approval or permission to restart the plant.

Plant relocation inspection planning checklist

Use these prompts with the owner, inspection provider and project team before the move. Assign names and review points in the actual project plan; this original checklist is not a universal work procedure. For each stage, retain enough information to reconstruct what was known when a decision was made. Where a record does not exist, identify the gap instead of implying it was inspected.