Before the Spray Rig: A Receiving Check for Coating Materials

A delivery truck can bring the right number of drums and still leave a coating crew with material it cannot release for use. One label may name a different grade. One component may have an unclear date. A damaged container may need a supplier decision before it joins the usable stock.

Make receiving a defined checkpoint before material reaches the spray rig. The aim is to establish what arrived, document its condition, and keep unresolved questions attached to the affected containers. This is a practical inventory-control approach; the selected system’s documents and project requirements govern acceptance.

Match each container to the order

Start with the approved material schedule and purchase order. Check the full manufacturer and product designation, component, grade or formulation, color where applicable, package size, and quantity. Read each container rather than assuming a wrapped pallet contains identical stock throughout.

Use the manufacturer’s actual component names. A familiar drum color or an A/B shorthand used on another system cannot establish identity. Confirm that the delivered components belong to the specified system. A substitute needs the project’s approval process before it becomes available to the crew.

Match the product identifier to its safety data sheet, too. OSHA’s Hazard Communication standard defines that identifier as the link between the label, SDS, and workplace chemical list. Keep original hazard information legible; an internal stock label should not cover it.

Record lots at container level

Photograph readable labels and transcribe the batch or lot identifiers into the receiving record. Include the supplier, delivery reference, receipt date, quantity, and storage location. Record each component separately, even when the supplier sells them as a kit.

Follow the manufacturer’s instructions for any required component or batch pairing. Do not assume the two components must carry identical lot numbers. If the identification or pairing is unclear, ask the supplier or manufacturer to resolve it in writing.

Where the project requires a certificate of analysis, conformity document, or other batch-specific record, match it to the delivered lot. A certificate for a similar product leaves the actual shipment unverified. Keep discrepancies visible until the correct evidence arrives.

Check the outside before opening anything

Inspect closed containers and their packaging for visible leakage, damage, disturbed seals or closures, unreadable labels, and signs of exposure that warrant review. Record observations precisely and photograph them from a safe position. “Dent beside closure” tells the supplier more than “bad drum.”

Suspected leakage or an unsafe container condition calls for the site’s trained response personnel and emergency procedures. Do not open, decant, or attempt a repair to complete a receiving inspection. OSHA’s SDS content requirements place accidental-release information in Section 6, handling and storage in Section 7, and exposure controls and personal protection in Section 8. Use the SDS for the identified material and the site’s response plan.

Read the date together with the storage history

Establish what the manufacturer’s date means and how the applicable shelf-life period is calculated. A delivery date alone does not establish remaining shelf life. Check each component against the current product documents and packaging, and resolve unclear date codes with the manufacturer.

Component limits can differ within one system. For example, Sika’s South African Sikalastic-8440 information lists different shelf lives for its ISO and resin components. That is a reason to check both containers, not a limit to transfer to another product or market.

Storage conditions matter alongside age. Sika’s U.S. Sikalastic-835 I information specifies original, unopened, undamaged sealed packaging and defined storage conditions; it also warns that higher storage temperatures may reduce shelf life. Save available shipping and storage records. A satisfactory temperature reading at arrival cannot reconstruct earlier exposure. Refer suspected excursions or missing history that affects acceptance to the manufacturer.

Make held stock unmistakable

Give unresolved material a clear “hold” status in the inventory record and prevent it from being issued. Use an appropriate segregated storage arrangement consistent with its hazards and the site’s procedures. Do not move a leaking or otherwise unsafe container merely to put it in a quarantine area.

Each hold needs a reason, affected container identifiers, an owner, and the evidence needed to resolve it. That might be a corrected delivery document, verified date code, replacement stock, or written manufacturer disposition. Record who accepted the resolution and when. A schedule shortage does not resolve an unanswered material question.

Carry the identity forward to the rig

Before issuing stock, close the receiving record with these essentials:

• Verified product and component identities, quantities, and lots.
• Container-condition observations and supporting photographs.
• Date, shelf-life, and storage-documentation checks.
• Outstanding holds or documented resolutions.
• Release decision, responsible person, and destination job.

When material is issued, preserve the link from those containers to the job’s application records. Returned stock needs its own status and history rather than silently rejoining unopened inventory. This creates the material trail that later supports the coating handover file. Receiving has done its job when the crew can identify the released stock without guessing and cannot accidentally select the stock still awaiting an answer.

Researched editorial guidance, not episode notes, a material qualification test, or an equipment operating procedure. Follow current manufacturer instructions and project requirements. Cover: original AI-generated conceptual illustration.