What paperwork you should receive when equipment leaves your site

Plate 01

Why chain of custody matters to a seller

For most material, ownership transfers cleanly and the matter is closed. For regulated material it is not that simple: responsibility for PCB-containing equipment, mercury components and batteries can follow the generator, meaning your organization, regardless of who hauled it away.

Documentation is how you demonstrate that material went to a properly permitted facility and was handled correctly. It costs nothing to obtain at the time of removal and is effectively impossible to reconstruct later.

Plate 02

The documents to collect

A bill of sale identifying the equipment purchased and transferring title. Weight tickets from the receiving facility for material sold by weight. A certificate of recycling or destruction for equipment processed rather than resold. Manifests for regulated waste streams, with the permitted receiving facility identified.

For transformers specifically, PCB testing results and, where applicable, disposal documentation from a facility permitted for PCB-containing equipment. For batteries, recycling documentation from a permitted processor.

Plate 03

Data and identification concerns

Modern electrical equipment increasingly contains configuration data: relay settings, network configuration, SCADA addressing, sometimes facility topology. It is not sensitive in the way that IT equipment is, but for critical infrastructure it is worth a moment's thought.

Also consider nameplates and asset tags identifying your facility. Most organizations do not care; some — utilities, defense-adjacent facilities, certain data center operators — do. If it matters to you, say so in advance and it can be handled during processing.

Plate 04

Building the file

Keep one project file: the written offer, the bill of sale, the invoice and proof of payment, the insurance certificates, weight tickets, recycling certificates and any manifests. Store it wherever your organization keeps records that must survive staff turnover.

This is a fifteen-minute task at the end of a project that occasionally saves an enormous amount of difficulty years later. It is the single easiest piece of risk management available in an equipment sale.