This national standard specifies the inspection on the clean degree of Air Duct Systems in Heating Ventilating and Air-conditioning (HVAC) Systems (hereafter referred to as ventilating system), environmental control of projects, cleaning methods, and the reparation and replacement after cleaning, as well as the inspection on project monitoring and cleaning effect.
This national standard applies the cleaning of such Air Duct System in Heating Ventilating and Air-conditioning (HVAC) Systems as have been contaminative by dust particles and biologic factors and have no special requirement on air filtration.
1. Scope 1
2. Normative References 1
3. Terms and Definitions 1
4. Inspection on Ventilation Systems 3
4.1 Inspection Time 4
4.2. Inspection Scope 4
4.3 Inspection on Microbial Contaminants 5
4.4 Inspection Personnel 5
4.5 Conditions for Cleaning 5
5 Project-environmental Control 6
5.1 Ventilating Ducts Keep Negative 6
5.2 Containment of Operation zones 6
5.3 Cleaners 8
5.4 Fire Smoke Detectors 8
5.5 Construction Pressurization and Depressurization 9
5.6 Chemical Uses 9
5.7 Contaminant Treatment 9
5.8 Project Planning 9
5.9 Ambient Air Cleaning 10
5.10 Hazardous Volatiles 10
5.11 Notice 10
6 Ventilating System Cleaning 10
6.1 Mechanical Cleaning Methods 10
6.2 Parts Cleaning 11
6.3 Fiber Glass Parts Cleaning 12
6.4 Biological Contaminants Cleaning 12
7. Recovery and Displacement after Cleaning 13
7.1 Material Recovery and Displacement 13
7.2 Outer Insulation Materials Recovery 13
7.3 Records 13
8 Project Monitoring 14
9. Verification on Cleaning Effect 14
9.1 Inspection Requirements 14
9.2 Visual Method 14
9.3 Weight Method 14
9.4 Inspection Rules 16
Annex A (Informative Annex) 16
Project Monitoring 16
A.1 General 16
A.2 Project Monitoring Planning 16
Annex B (Informative Annex) Sampling Frame 17
