Factory Acceptance Test (FAT), a machine, piece of equipment or system at the manufacturer's facility, before shipment; This involves independently verifying compliance with the contract, technical specifications, and relevant standards. AES Innovation, with our authorized engineers Witnessing, supervising, and reporting FAT and Site Acceptance Test (SAT). independent third party It operates with this approach.
Short answer: FAT tests the equipment at the factory before payment is made and it is transported to the site, ensuring that no defects are identified. early detection This is a possibility. An independent auditor (AES) inspects the equipment against the purchase specifications and standards, reports the results, and forms the basis for shipment approval. punch (missing) list It removes.
What is Factory Acceptance Testing (FAT)?
FAT (Fulfillment of Amounts) is an acceptance test performed at the manufacturing facility of the supplied equipment, under the supervision of the buyer (or an independent inspection organization acting on behalf of the buyer). The aim is to prove, before shipment, that the equipment meets the terms of the purchase order (PO), datasheet, and contract. Correcting defects at the factory is both much cheaper and more time-efficient than correcting them on-site.
Why is fat critical?
- Early defect detection: Fixing a defect at the factory is many times cheaper than fixing it in the field.
- Contract milestone: FAT is a prerequisite for payment/shipping in most contracts.
- It reduces the risk of commissioning: It eliminates surprises during field setup and before SAT.
- Independent evidence: It provides impartial documentation in warranty and dispute situations.
- Supplier performance: It objectively demonstrates the manufacturer's quality and documentation competence.
The Difference Between FAT and SAT
| Criterion | FAT (Factory Acceptance Test) | SAT (Field Acceptance Test) |
|---|---|---|
| Place | Manufacturer's factory | Installation site |
| Time | Before shipment | After installation/assembly |
| Aim | Specification & standard compliance | Field integration & working in real-world conditions |
| Conclusion | Shipping confirmation / punch list | Acceptance & commissioning approval |
Technical Witness Criteria (ITP Based)
FAT/SAT readings are equipment-specific, not based on fixed periods. Inspection and Test Plan (ITP) It is based on the supply contract and specifications. Acceptance is granted on the basis of conformity to the specification values and tolerance limits.
| ITP point | Meaning | Conclusion |
|---|---|---|
| Hold (H) — stopping point | Production cannot continue without witnesses. | No progress will be made without approval. |
| Witness (W) — point of witness | A witness will be summoned; if they do not appear, the process can continue. | It is recorded. |
| Review (R) — document review | Review of records and certificates | Confirmation of suitability |
| Inappropriateness | Result outside of specification/tolerance | NCR (non-conformity report) |
FAT/SAT inspections are conducted according to equipment-specific ITP and contractual specifications; the applicable acceptance criteria vary according to the relevant product standard.
AES Innovation FAT Witnessing Process
- Specification & ITP review: The contract, datasheet, and Inspection-Test Plan (ITP) are reviewed.
- FAT protocol approval: Testing steps, admission criteria, and registration format are clarified.
- Testimony at the factory: Our qualified engineer will monitor and verify the tests on-site.
- Measurement & function verification: Measurements and functional tests are verified with calibrated devices.
- Punch list & report: The irregularities are listed, and a photographic FAT report is prepared.
- Shipping/SAT proposal: Depending on the closing status, shipment confirmation or retesting is recommended.
Which equipment can be used for FAT testing?
- Electrical panels, MCC and medium/low voltage switchgear
- Generators, UPS and backup power systems.
- Transformers and power systems
- Pressure vessels, boilers and heat exchangers
- Pumps, compressors and hydraulic units
- Cranes, lifting equipment, and steel structures.
- Production/process machine lines and package systems (skid)
- PLC / automation / SCADA boards
Commonly Encountered Nonconformities
- Use of materials/brands outside of specifications
- Missing documentation (CE declaration, test/calibration certificates)
- Deficiencies in labeling, marking, and cable numbering.
- Failure in function and protection tests.
- IP protection class and panel internal layout inconsistencies
- Manufacturer tests performed with uncalibrated measuring instruments.
Relevant Standards and References
FAT; contract/PO and datasheet terms, relevant equipment-specific requirements. EN / IEC / ISO product standards and approved by the customer ITP (Inspection & Test Plan) It is carried out based on the principles acquired by AES Innovation as a Type A inspection organization. with the principles of independence and neutrality Provides FAT/SAT testimony. (FAT witnessing is an inspection/witnessing service; our TÜRKAK accreditation scope covers periodic inspections of electrical installations.)
Frequently Asked Questions
What is the difference between FAT and SAT?
FAT is performed at the factory before shipment; SAT is performed at the installation site after assembly. FAT verifies specification compliance, while SAT verifies site integration.
Who acts as a witness at a FAT test?
An independent third-party inspection/witnessing team will conduct the inspection on behalf of the buyer. AES Innovation will undertake this inspection impartially with its authorized engineers.
What document is generated at the end of the FAT notification?
A photographic document containing test results, a list of non-conformities (punch points), and a shipping recommendation. FAT report It is arranged.
Frequently Asked Questions
Fabrika Kabul Testi (FAT) nedir?
FAT, bir ekipmanın üreticinin sahasında, sevkiyat öncesinde sözleşme şartnamesi ve muayene-test planına (ITP) göre doğrulanmasıdır. SAT ise aynı doğrulamanın saha/kurulum sonrası yapılan halidir.
FAT şahitliği ne zaman gereklidir?
Kritik veya yüksek maliyetli ekipman alımlarında, uygunsuzlukları sevkiyattan önce yakalamak için bağımsız bir tarafın FAT’a şahitlik etmesi önerilir.
FAT sırasında hangi noktalar kontrol edilir?
ITP’deki Durdurma (Hold) ve Şahit (Witness) noktaları, görsel ve boyutsal kontroller, fonksiyon testleri, malzeme ve test sertifikaları ile uygunsuzlukların (NCR) raporlanması.
Bu hizmet akredite bir muayene mi?
Hayır. FAT/SAT şahitliği bağımsız üçüncü taraf/yetkili mühendis hizmetidir; akreditasyon kapsamı dışındadır. Kabul kriterleri ilgili ürün standardı ve sözleşmeyle belirlenir.
Free: FAT/SAT Witness Checklist
Download the practice checklist (6 sections: preparation, documentation, visuals, functional tests, punch list, SAT) as a PDF. It will be sent to your email instantly.