♻ Experts4Recycling
Owner's Engineering · Sorting & Recycling Plants · Europe & GCC

Your technical counterpart to the contractor

The contractor knows their plant. Our job is to make sure the plant that gets built is the plant you contracted for – from the tender documents through the execution drawings to the acceptance test.

Operators · Municipalities · Investors · Public contracting authorities

Three places where owners lose money

Not because anyone acts in bad faith. Because a plant contract is written by people who build plants, and read by people who operate them.

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The specification is hybrid

Tenders declare a functional, performance-based scope and at the same time fix component dimensions in the annexes. Conformity then has to be assessed on two levels – guaranteed output values and prescribed minimum design values. Only one of them is usually checked.

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Guarantee values are asymmetric

When two guaranteed values carry equal weight in the evaluation but very different penalty rates, bidders quote generously where a miss is cheap and cautiously where it hurts. The offered figures have to be read against the concept behind them, not against each other.

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Nobody owns the gap

General contractor, subcontractors and external experts each deliver their defined scope. Items that fall between those scopes – earthing and bonding, lightning protection, zone consistency between the explosion protection document and the equipment list – are ordered by no one and surface at the authority hearing.

Scope of services

Four building blocks. They can be commissioned individually or as a continuous mandate from the tender to the acceptance certificate.

A

Tender and bid review

Before the award, while everything is still changeable at no cost.

  • Review of the tender documents for internal contradictions between functional scope and prescribed design values
  • Completeness matrix of all bids against the tender documents, colour-coded, with a clear split between "missing from the bidder" and "not in the data room"
  • Open-points list with drafted questions – separately for the bidders and for the contracting authority
  • Plausibility check of guaranteed values against the technical concept offered
  • Reference feed material and test conditions defined before the final bid stage, so that offered values remain comparable and the acceptance test remains defensible
B

Review of execution documentation

During execution, at the pace the site actually runs.

  • Written statement per submitted document within an agreed turnaround, typically five working days
  • Check against the contract, the annexes and the prescribed minimum design values – not against taste
  • Layout, process flow diagrams, equipment lists, control philosophy, safety-related functions
  • Tracked open-points register: who owes what, by when, and what it blocks
  • Documented recommendations – so that a decision taken against them stays traceable
C

Acceptance and verification of guaranteed values

The part that decides whether a guarantee is worth anything.

  • Verification methodology agreed in writing before the test, not negotiated during it
  • Throughput, recovery rate and product purity measured on a defined sampling plan across all output streams in the same shift
  • Consistently mass-based evaluation, defined minimum sample sizes, at least two sampling series per value
  • Bulk density range and reference material fixed in advance, deviations recorded rather than argued away
  • Test report that holds up as the basis for acceptance, penalty or rectification
D

Interface and gap review

The scopes nobody has been ordered to deliver.

  • Mapping of all contracted scopes against the technical requirement – the gaps become visible where the contracts meet
  • Cross-check of the explosion protection document against equipment lists, zone classification and instrumentation
  • Earthing, equipotential bonding and lightning protection traced through the full contractual chain to a named responsible party
  • CE conformity of the assembly of machinery, permit conditions and inspection requirements kept inside the mandate
  • Interface to the authority and the approved experts – findings raised before the hearing, not during it

What you receive

Every mandate produces documents you can put on the table – in front of the contractor, the authority, your management or your lender.

  • Colour-coded completeness matrix
  • Open-points list with drafted questions
  • Written statement per document
  • Gap list with named responsibilities
  • Agreed verification methodology
  • Acceptance test report
The point: you keep the technical argument in writing. That is what turns a guarantee into something enforceable and a recommendation into something that protects you once it has been overruled.

Why Experts4Recycling

⚖️

Vendor-neutral

An independent engineering office. No plant supply, no agency commission on the equipment we assess – our only interest in the project is yours.

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Both sides of the contract

More than 20 years in sorting and recycling plant engineering, on the supplier side and on the operator side. We know how a scope of supply is written and where it stops.

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Findings with a source

Every finding is referenced to the contract clause, the annex or the standard it rests on. That is what makes it usable in a negotiation.

20+ yearsPlant engineering – supplier and operator side
70+ countriesProject experience across 4 continents
4 languagesEN · DE · FR · ES at negotiation level
CertifiedWaste-management director (§ 26 AWG, Austria)
At home in the GCC. Two years resident in the UAE, project and tender work across the Gulf region, employers in Austria, the USA and the Netherlands. We know how a European plant supplier writes a scope of supply and how it reads once it lands in a Gulf tender: FIDIC-style contract structures, local content and inspection requirements, ambient conditions that European reference plants were never designed for, and feed material whose morphology has nothing to do with the analyses in the annex. That last point is where most guarantee disputes in the region start.

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