For questions or more information:
The rules of procedure  for plumbing, mechanical and fuel gas product listings require two types of inspections:
A qualifying (initial) inspection is part of the listing application process. The purpose of the qualifying inspection is to determine whether the manufacturer’s quality system has been successfully implemented and/or to verify that the manufactured product is the same as the product presented for recognition.
Qualifying inspections are required for:
- New listing applications
- And for additional manufacturing facilities being added to an existing listing
Qualifying Inspection Form 
A surveillance inspection, conducted after a listing has been issued, verifies that the listed products are the same as originally recognized.
Surveillance inspections of manufacturing facilities must be conducted, at a minimum, once per year unless otherwise noted in procedures and involve, as applicable:
- Verifying the effectiveness of corrective actions taken to resolve non-conformances found during previous inspections
- Review of the use of the ICC-ES PMG listing mark
- Review of product labeling as required with the applicable standard
- Review of complaint records
- Review of calibration records
- Review of any changes to the quality manual and procedures that may affect listed products
- Random selection of listed products for testing
Surveillance Inspection Form 
A listee may request that the inspections be conducted by ICC-ES, or the listee may retain a third-party inspection body that has a contractual agreement with ICC-ES and that is accredited by the International Accreditation Service as meeting the requirements of ISO/IEC Standard 17020, General Criteria for the Operation of Various Types of Bodies Performing Inspection.
Note: The third-party inspection body must complete the ICC-ES inspection form.