The most expensive moment for a project material lot is when it arrives at the KSA receiving site, gets opened by goods receipt, and fails the first inspection on the ground. By that point the material has crossed an ocean, cleared customs, paid duties, and consumed storage space. Whatever non-conformance is now visible was usually visible at the vendor's works months earlier.
This guide is for procurement managers, EPC project leads, and integrity engineers commissioning pre-shipment inspection (PSI) for KSA-bound project materials, particularly on Aramco-grade refining, petrochemical, and pipeline scopes. It walks through the ITP framework, the source-surveillance-versus-PSI split, the witness and hold-point logic, and the documentation pack the inspector hands over at release.
What pre-shipment inspection covers
PSI is the formal release inspection of project materials at the vendor's works, performed by an independent third-party agency acting for the buyer. The scope is shaped by the purchase order and the project's Inspection and Test Plan (ITP), and typically covers four areas at once.
Standards routinely referenced on PSI
- Material certification verification. Mill test reports, EN 10204 type 3.1 or 3.2 documentation as called for in the PO, and the heat-number traceability from raw material to finished product. If the certification does not match, nothing else matters yet.
- Dimensional and visual conformance. The materials are measured against drawing, tolerance, and code requirements, and visually inspected for surface condition, marking, and traceability stamping.
- Witness and hold-point verification. Whatever tests, NDT, hydrotest, paint, and coating activities are called for in the ITP get verified or witnessed at the point named in the ITP.
- Documentation pack review. The inspector confirms the documentation pack is complete before release. The pack travels with the cargo.
The successful close-out of PSI is the gate to releasing the material for shipment to KSA. Without it, the cargo sits at the vendor's works.
Source surveillance and final PSI: two different answers
PSI is the final close-out, but it works best when it sits on top of source surveillance through the manufacturing window. The two answer different questions.
Source surveillance is the ongoing programme: the TPI agency attends specified points during fabrication and testing as work progresses. It catches non-conformances early, allows the vendor to correct in real time, and prevents discovery of a systemic problem late in the build. Surveillance is what an operator audits when the question is "did the agency monitor the manufacture or just turn up at the end."
Pre-shipment inspection is the close-out: at the end of manufacture, the agency verifies that everything called for has actually been done, the documentation pack is complete, and the materials are ready to ship. PSI is what an operator audits when the question is "did the agency release this lot for shipment with the right evidence."
Most Aramco-grade material scopes use both. The framework is the same one we describe in the TPI buyer's checklist: commission the inspection to answer specific questions, not to provide generic coverage.
The witness-point versus hold-point split
An ITP that does not separate witness points from hold points cannot be commissioned cleanly to a TPI agency. The difference decides who stops the line.
- A witness point is a step where the TPI agency is invited to attend. If the agency does not arrive within the agreed notice period, the vendor proceeds and the step is recorded as un-witnessed. The work moves forward.
- A hold point is a step that the vendor cannot pass without the TPI agency present, or without explicit waiver from the buyer. Hold points stop the line.
The ITP should name each test, examination, and milestone, classify it as witness or hold, and state the notice period the agency requires. The cost difference between an ITP loaded with hold points and one loaded with witness points is substantial, because hold points keep an inspector on call against a vendor's schedule. Designing the ITP carelessly produces either an expensive inspection programme or one that lets the wrong things through.
A poorly designed ITP costs more than the inspection itself, because the inspector either stops production for steps that did not need a hold or misses steps that should have had one. The ITP belongs to the buyer, with input from the agency, and should be written in conjunction with the PO.
The documentation pack: what travels with the cargo
The pack the inspector hands over at release decides whether the cargo clears KSA customs and operator goods receipt smoothly. A complete pack typically covers eight elements.
- Material certification (mill test reports, EN 10204 type 3.1 or 3.2 certificates as applicable).
- Heat-number and traceability mapping from raw material to finished product.
- Dimensional and visual inspection record.
- Witness and hold-point sign-offs against the ITP.
- NDT results where the ITP calls for NDT, with method, technician qualification, and acceptance criterion against the code.
- Hydrotest or other pressure-test records as applicable.
- Paint and coating reports where the material is coated, including thickness, adhesion, and curing records as applicable.
- The packing list and the inspector's release certificate.
Each element should be referenced against the PO and the ITP. The integrity of the pack is itself an inspection finding. Operators in KSA audit the pack at receipt, and missing elements push the cargo back into a holding area until the gap is closed.
On Aramco-grade work, the materials are received against the pack. If the pack is incomplete, the cargo is incomplete, regardless of what is physically in the container.
Where PSI sits in the wider project inspection ecosystem
PSI is the front end of the inspection chain. The chain continues through the QA/QC technical staffing framework at site once the materials arrive, the shutdown staffing logic when the materials are installed during an outage, and the asset integrity management approach once the equipment is in service. A failure at PSI ripples through every downstream inspection, and the cost of correction grows at each step.
The credentials behind the PSI inspector themselves run on the same NDT, welding, and API plant inspector frameworks set out in the ASNT NDT Level II training guide, the CSWIP welding inspector roadmap, and the API 510, 570, 653 certification routes.
How IES approaches pre-shipment inspection
IES treats PSI as the release gate for a material lot, not as a tick-box close-out. Our third-party inspection service line covers PSI, source surveillance, vendor inspection, and the ITP-design work that decides whether the inspection programme is the right shape in the first place. To discuss a PSI scope or a vendor surveillance programme, contact our team, or see the Aramco vendor approval guide for the operator-side audit logic the PSI pack ultimately has to satisfy.
Questions buyers ask us
PSI is the formal inspection of project materials at the vendor's works, before shipment, by an independent third party acting for the buyer. The scope typically covers verification of material certification (mill test reports, EN 10204 type 3.1 or 3.2 documentation), dimensional and visual conformance to the purchase order, witness or hold-point verification of test results, and review of the supporting documentation pack. Successful PSI is the gate to releasing the material for shipment to KSA.
Source surveillance is an ongoing programme across the manufacturing window: the TPI agency attends specified points during fabrication and testing as work progresses. Pre-shipment inspection is the final close-out inspection before release: it verifies that everything called for has actually happened, the documentation pack is complete, and the materials are ready to ship. Most Aramco-grade scopes use both, with surveillance through manufacture and PSI as the release gate.
A witness point is a step where the TPI agency is invited to attend, but if it does not arrive the vendor may proceed and the step is recorded as un-witnessed. A hold point is a step that the vendor cannot pass without the TPI agency present or without explicit waiver from the buyer. Hold points stop the line; witness points do not. An ITP that does not separate the two cannot be commissioned cleanly to a TPI agency.
A typical PSI documentation pack covers the material certification (mill test reports and EN 10204 type certificates as applicable), the heat-number and traceability mapping from raw material to finished product, the dimensional and visual inspection record, witness and hold-point sign-offs, NDT results where called for, hydrotest or other pressure-test records as applicable, paint and coating reports where the material is coated, the packing list, and the inspector's release certificate. The pack travels with the cargo to KSA.
Materials rejected at the KSA receiving site or at operator goods receipt cost three things: the procurement schedule on a project where lead times often run to many months, the storage cost of holding rejected items at the receiving site, and the rework or replacement programme that follows. PSI catches non-conformances at the vendor's works, where they can still be remedied without shipping costs and customs implications. Skipping PSI to save inspection fees almost always costs more on the rejection that follows.
