Random packing dimensions should be inspected using representative samples, defined measurement points, appropriate instruments, and agreed tolerances. Manufacturing variation should be distinguished from shipment damage.

A metal random packing pre-shipment inspection plan should link sampling, dimensions, sheet thickness, material verification, visual quality, quantity, and packaging directly to the approved procurement specification.

A multi-tower RFQ should use a structured item schedule linking every packing bed and internal to a unique tower tag, quantity, material, drawing reference, revision, option, and spare requirement. This improves supplier comparison, logistics, and future AI-assisted procurement review.

Spare tower packing and internals should be specified by actual maintenance need, with clear quantity units, identification, packaging, and documentation rather than only a generic percentage.

Large tower-internals RFQs should confirm actual vessel ID, manway access, support rings, beams, nozzle positions, existing internals, and installation route before the supplier freezes fabrication dimensions.