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The California Contractors State License Board (CSLB) was established in 1929 as the Contractors License Bureau under the Department of Professional and Vocational Standards. Today it is part of the California Department of Consumer Affairs (DCA).
An initial verification test must then be done within 30/120 days, and then a follow-up test within 10 days of that. There are additional clauses for extensions if needed. If the leak is not to be repaired, there must be a plan to retire or retrofit the appliance within 30 days, to be completed within one year.
Pressure-retaining items can be registered with the National Board, requiring certain uniform quality standards be achieved certifying the manufacturing, testing, and inspection process. To obtain a certification the registered items have to be inspected by National Board-commissioned inspectors and built to required standards.
The Air Movement and Control Association International, Inc. (AMCA) is an international trade body that sets standards for Heating, Ventilation and Air Conditioning equipment. It rates fan balance and vibration, aerodynamic performance, air density, speed and efficiency.
NEBB publishes home study courses, technical manuals, and training materials for industry use. Below is a list of current NEBB publications: NEBB Procedural Standards for Testing, Adjusting and Balancing of Environmental Systems (7th Edition, 2005)* Testing, Adjusting and Balancing Manual for Technicians (2nd Edition, 1997)
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A certification listing is a document used to guide installations of certified products. After a field installation is completed, it is compared to the list to make sure that it complies with a regulation (e.g., a building code).