SEMI S2/S8 for Used Equipment: Buyer Acceptance Checklist
Buying used semiconductor equipment? Request SEMI S2/S8 reports, match the evaluated configuration and agree on corrective work and site acceptance.
When a used-equipment offer says "SEMI S2/S8 compliant," ask for the underlying evaluation reports and the configuration they cover. Have your site's EHS lead define the acceptance requirements before approving the purchase.
What do SEMI S2 and S8 cover?
SEMI S2 is the Environmental, Health, and Safety Guideline for Semiconductor Manufacturing Equipment. Its published purpose describes performance-based EHS considerations for that equipment.
SEMI S8 is the Safety Guideline for Ergonomics Engineering of Semiconductor Manufacturing Equipment. Its published scope addresses ergonomic design principles and considerations.
Use the checklist below to prepare a purchase review, not as a substitute for the applicable guidelines or as a list of mandatory contractual clauses.
Ask for the evaluated configuration, not just a certificate
Request the complete evaluation package and ask the seller to identify:
- The equipment model, serial number, chamber configuration and installed options covered.
- The guideline editions used, report date, evaluator and scope of assessment.
- Recorded exceptions, corrective actions and evidence of their closure.
- Changes to hardware, controls, software, facilities interfaces or intended use since the evaluation.
- Available manuals, drawings, prior-process history and decontamination records.
Have the evaluator or your EHS lead reconcile the delivered configuration with the report. Ask them to identify which findings remain applicable and which changes need further review.
Define the site's review before shipping
Ask your site's qualified reviewers to specify the documentation and checks needed for the intended installation. Include questions about access and maintenance tasks, guarding, safety functions, electrical documentation, process materials, exhaust and utility interfaces where relevant.
Assign each question to a reviewer and record the evidence needed to close it. Do not convert a generic checklist into an unsupported claim that a particular interlock, sensor or retrofit satisfies an entire guideline.
Use the used equipment evaluation guide to organize the inspection package. For an etch-tool example, the AMAT Centura DPS II buyer checklist shows how to request configuration and process-acceptance records separately.
Put acceptance and corrective work in the purchase scope
Agree with the seller on a written review and acceptance plan. Have your procurement and legal teams document:
- The reports and configuration records due before shipment.
- The pre-shipment review scope and any post-installation checks.
- Responsibility for unresolved findings, corrective work and repeat evaluation.
- What constitutes acceptance, who signs it and how exceptions are handled.
- The remedy if the delivered equipment or documentation does not match the agreed scope.
Negotiate any payment milestones or holdbacks for the actual transaction. Do not use a generic percentage or warranty period as if SEMI requires it.
The used versus refurbished equipment guide can help frame the seller's work scope alongside the safety review.
Budget from a defined scope
Ask the evaluator to quote the review against the equipment configuration and supplied documentation. Request separate estimates for corrective work, installation checks and any repeat evaluation. Record exclusions and responsibility for additional findings.
Before you approve the purchase
Request the reports, serial-numbered configuration and exception list with the seller's quotation. Route that package to your EHS lead and purchasing team. Approve the purchase only against their documented acceptance requirements and agreed responsibilities for open findings.
Related Parts
Caladan stocks used and refurbished parts referenced in this article — tested, inspected, and ready to ship.