Tom Bishop, PE
Senior Technical Support Specialist
Electrical Apparatus Service Association
The EASA Accreditation Program, introduced in June 2014, aims to standardize and elevate the quality of service centers through rigorous equipment calibration, internal and external auditing, and adherence to specific criteria. This paper outlines the essential components of the program, providing guidance on equipment requirements, auditing processes, common nonconformities, and frequently asked questions.
The Accreditation Program requires specific equipment to be calibrated annually, as listed in Annex A of the EASA Accreditation Checklist. This includes electrical instruments like milli-ohmmeters, wattmeters, and surge testers, as well as mechanical tools such as micrometers and vibration meters. Service centers must label instruments not within the program's scope as "for reference only" to avoid confusion during audits. Electrical equipment like milli-ohmmeters are crucial for accurate resistance measurements, while wattmeters are necessary for core loss tests and space heater assessments. Surge testers, though not mandatory, must be calibrated if present.
Mechanical equipment requirements include calibrated micrometers and basic vibration meters capable of measuring unfiltered vibration. Balancing machines must provide dynamic balance values, either directly or indirectly. Calibration of micrometers can be done in-house, provided a formal calibration program is established. Physical equipment like burnout ovens must have temperature control and recording devices calibrated to ensure parts do not exceed specified temperature limits.
Internal audits are straightforward, requiring annual audits covering the entire checklist. External audits, performed by approved firms, occur every three years for accreditation renewal. Beta audits, though not mandatory, are highly recommended to identify and correct potential nonconformities before the official audit. The external audit process aims to provide objective evidence of compliance, helping service centers improve their methods and efficiency.
Common nonconformities include issues with calibration, documentation, and adherence to specific criteria. For instance, findings in the "Winding removal and core integrity" category often relate to part temperature control and core test documentation. Addressing these issues promptly can prevent delays in accreditation. The paper emphasizes the importance of thorough preparation, including reviewing the checklist, implementing necessary procedures, and conducting beta audits.
Frequently asked questions cover topics like calibration practices, acceptable documentation methods, and specific equipment requirements. Less common questions address issues like the use of magnet paper for rotor tests and the accreditation of outsourced stator rewinds.
In conclusion, successful implementation of the EASA Accreditation Program involves creating an internal task group, reviewing the checklist, ensuring equipment calibration, conducting beta audits, and promptly addressing audit findings. This structured approach not only facilitates accreditation but also enhances service center efficiency and productivity.
Key Points Covered:
- Equipment calibration requirements
- Internal and external auditing processes
- Common nonconformities and their prevention
- Frequently asked questions about the program
- Importance of beta audits for preparation
Key Takeaways:
- Annual calibration of specific equipment is essential for accreditation.
- Internal audits should be conducted annually, with external audits every three years.
- Thorough preparation and beta audits can prevent common nonconformities.
- Addressing audit findings promptly ensures timely accreditation.
- The program enhances service center efficiency and standardizes quality.
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