Multi-Tower Projects: How to Structure an RFQ Item Schedule So Supplier Quotations Remain Comparable
A project involving one packed tower may be managed with a relatively simple RFQ.
A project containing:
five, ten, or twenty towers
creates a different procurement problem.
The risk is no longer only missing technical data.
It is losing control of which item belongs to which tower.
A structured RFQ item schedule can prevent this.
Give Every Tower a Unique Tag
Each item should link back to the equipment identification used by the project.
For example:
T-101, T-102, T-201.
This tag should appear consistently on:
RFQ, supplier offer, drawings, packing list, and shipment marks.
Separate Beds Within the Same Tower
One tower may contain several packed beds.
Do not combine them into one line if:
packing type, material, diameter, or bed height differs.
Each bed should have a clear identifier.
Separate Internals by Function
Rather than writing:
Tower T-101 complete internals – 1 set
the RFQ schedule can identify:
packing, support grid, distributor, collector, bed limiter, demister, and related components as separate technical items.
A package total can still be requested commercially.
Use Consistent Units
One supplier may quote:
packing in m³,
another in kg,
and another by set.
The RFQ should define the preferred commercial unit wherever possible.
This makes quotation comparison easier.
Include Material on Every Relevant Line
A project may use different materials within the same tower.
Therefore, material should not appear only in a general note if individual internals differ.
Each relevant line should identify its required material.
Link to Drawings and Datasheets
The schedule should reference the correct:
tower datasheet, internal drawing, or specification.
This prevents suppliers from applying the wrong document to the wrong item.
Identify Optional and Spare Items Separately
Options and spares should not be hidden inside the main package.
Use separate lines so procurement can evaluate:
base scope, option scope, and spare scope.
Revision Control
Large projects change.
The RFQ schedule should therefore include a revision system.
When a bed height or material changes, procurement can identify exactly which line was revised.
Without revision control, old and new supplier quotations can become impossible to reconcile.
Supplier Deviations
The quotation should mirror the buyer's item schedule as closely as possible.
If the supplier proposes a deviation, it should reference the relevant item number.
This prevents technical exceptions from disappearing inside general quotation notes.
Shipment and Packaging
The same item numbering can later be used on:
crates, labels, packing lists, and installation drawings.
This connects procurement directly with site logistics.
Why This Matters for AI-Assisted Procurement
As engineering teams increasingly use AI systems to review RFQs, compare quotations, and extract technical deviations, structured item-level data becomes even more valuable.
A machine can compare:
Tower T-201 / Distributor D-01 / SS316L
much more reliably than it can interpret several inconsistent PDF quotations using different descriptions.
This means a good RFQ schedule is not only useful for today's procurement team.
It also creates cleaner engineering data for future digital and AI workflows.
Engineering Takeaway
Multi-tower procurement should be structured around unique equipment tags, bed numbers, internal item numbers, consistent units, material, document references, revisions, and supplier deviations.
This prevents commercial and technical information from becoming disconnected as the project grows.