Air Systems Cleaning Specialist (ASCS) Practice Exam

Which standard provides guidelines for cleaning fibrous glass duct insulation?

1. ASHRAE Standard 62

2. NAIMA AH122

3. EPA 402-F-91-002

4. ISO 9001

The correct answer is: NAIMA AH122

The guidelines for cleaning fibrous glass duct insulation are outlined in NAIMA AH122. This standard is specifically developed by the North American Insulation Manufacturers Association (NAIMA) and addresses the proper cleaning methodologies for duct systems that include fibrous glass insulation. It ensures that the cleaning processes do not damage the insulation material while effectively removing contaminants, thereby maintaining the insulation's intended thermal and acoustic performance. NAIMA AH122 emphasizes the importance of using appropriate techniques and tools that conform to the unique properties of fibrous glass insulation. This helps to safeguard against the introduction of moisture or the disruption of the insulation itself during the cleaning process. Other standards mentioned, such as ASHRAE Standard 62, relate primarily to ventilation and indoor air quality, while EPA 402-F-91-002 focuses on lead safety in housing and childhood environments, and ISO 9001 sets requirements for quality management systems. None of these directly address the specific cleaning protocols for fibrous glass duct insulation, which is the critical factor in this context.