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ACR The NADCA Standard • 2013 3 ACR Committee Roster - - - - - - - - - - - - - - - - Page 1 Disclaimer - - - - - - - - - - - - - - - - - - - - - - - Page 2 Foreword - - - - - - - - - - - - - - - - - - - - - - - - Page 4 Purpose - - - - - - - - - - - - - - - - - - - - - - - - - Page 5 Scope - - - - - - - - - - - - - - - - - - - - - - - - - - Page 5 Application - - - - - - - - - - - - - - - - - - - - - - - Page 5 Qualifications - - - - - - - - - - - - - - - - - - - - - - Page 5 Limitations - - - - - - - - - - - - - - - - - - - - - - - Page 5 Determining the Need for HVAC Cleaning & Restoration - - - - - - - - - - - - - - - - - - - - - - - Page 6 Section 1 Inspections 1.0 Overview - - - - - - - - - - - - - - - - - - - - - - Page 7 1.1 When to Perform an Inspection - - - - - - - - - - Page 7 1.2 HVAC Inspector Qualification - - - - - - - - - - - Page 7 1.3 HVAC Pre-Inspection - - - - - - - - - - - - - - - - Page 7 1.4 Appropriate Environmental Engineering Controls - - - - - - - - - - - - - - - - - - - - - - - - - Page 7 1.5 Routine HVAC Inspection - - - - - - - - - - - - - Page 7 1.6 HVAC System Inspection-Construction, Retrofit and Remodel - - - - - - - - - - - - - - - - - Page 7 1.7 Performing HVAC System Component Inspections - - - - - - - - - - - - - - - - - - - - - - - Page 7 1.8 Exposure to Hazardous Materials - - - - - - - - - Page 8 1.9 Inspecting for Mold Contamination - - - - - - - Page 8 1.10 System Assessment - - - - - - - - - - - - - - - - Page 8 Section 2 Work Plans 2.0 Overview - - - - - - - - - - - - - - - - - - - - - - Page 9 2.1 Purpose - - - - - - - - - - - - - - - - - - - - - - - Page 9 2.2 Scope of Work - - - - - - - - - - - - - - - - - - - Page 9 2.3 Means and Methods - - - - - - - - - - - - - - - - Page 9 2.4 Other Trades and Their Tasks - - - - - - - - - - - Page 9 2.5 Project Schedule - - - - - - - - - - - - - - - - - - Page 9 2.6 Work Site Communication Plan - - - - - - - - - - Page 9 2.7 Product Submittals - - - - - - - - - - - - - - - - Page 9 2.8 Safety Plan & Safety Concerns - - - - - - - - - - - Page 9 2.9 Disclaimers - - - - - - - - - - - - - - - - - - - - - Page 9 Section 3 Engineering Controls for HVAC Cleaning and Restoration Projects 3.0 Overview - - - - - - - - - - - - - - - - - - - - - - Page 11 3.1 Equipment Maintenance - - - - - - - - - - - - - Page 11 3.2 Fuel-powered Equipment - - - - - - - - - - - - - Page 11 3.3 Vacuum Equipment Exhausting Indoors - - - - - Page 11 3.4 Negative Pressure Requirements - - - - - - - - - Page 11 3.5 Handling of Contaminated Materials - - - - - - - Page 11 3.6 Ambient Air Cleaning - - - - - - - - - - - - - - - Page 11 3.7 Control of Product Emissions - - - - - - - - - - - Page 11 3.8 Negative Pressure Failure - - - - - - - - - - - - - Page 11 3.9 Level 1 Containment - - - - - - - - - - - - - - - - Page 12 3.10 Level 2 Containment (Temporary Barriers) - - - Page 12 3.11 Level 3 Containment - - - - - - - - - - - - - - - Page 13 3.12 Level 4 Containment - - - - - - - - - - - - - - - Page 13 3.13 Summary of Engineering Controls - - - - - - - Page 13 Section 4 Cleaning and Restoration Procedures 4.0 Overview - - - - - - - - - - - - - - - - - - - - - - Page 15 4.1 Negative Duct Pressurization - - - - - - - - - - - Page 15 4.2 Service Openings - - - - - - - - - - - - - - - - - Page 15 4.3 Cleaning and Restoration of HVAC Systems - - - - - - - - - - - - - - - - - - - - - - - - - Page 16 4.4 Wet Cleaning, Power Washing, and Steam Cleaning - - - - - - - - - - - - - - - - - - - - - - - - Page 16 4.5 Vacuum Collection Equipment - - - - - - - - - - Page 16 4.6 Confined Space Cleaning - - - - - - - - - - - - - Page 16 4.7 Air-Handling Unit (AHU) Cleaning - - - - - - - - Page 16 4.8 Air Duct Cleaning - - - - - - - - - - - - - - - - - Page 17 4.9 Dampers - - - - - - - - - - - - - - - - - - - - - - Page 17 4.10 Registers, Grilles, Diffusers - - - - - - - - - - - - Page 17 4.11 Smoke and/or Fire Detection Equipment - - - - Page 17 4.12 Coil Surface Cleaning - - - - - - - - - - - - - - - Page 17 4.13 Control of Odors and Product Emissions - - - - Page 18 4.14 Remediation of Mold Contamination - - - - - - Page 18 4.15 Restoration and Repair of Mechanical Systems - - - - - - - - - - - - - - - - - - - - - - - - - Page 18 4.16 Surface Treatments - - - - - - - - - - - - - - - - Page 18 4.17 Removal of Mold Contaminated Porous Materials - - - - - - - - - - - - - - - - - - - - - - - - Page 18 4.18 Cleaning Fibrous Glass Duct System Components - - - - - - - - - - - - - - - - - - - - - - Page 19 4.19 Resurfacing Fibrous Glass Surfaces - - - - - - - Page 19 4.20 Damaged Fibrous Glass Material - - - - - - - - Page 19 4.21 Thermal-Acoustic HVAC Insulation Replacement - - - - - - - - - - - - - - - - - - - - - - Page 19 4.22 Non-Porous Material Restoration - - - - - - - - Page 19 4.23 Flooding/Water Damage - - - - - - - - - - - - - Page 19 4.24 Fire/Smoke Damage - - - - - - - - - - - - - - - Page 19 4.25 HVAC System Repair - - - - - - - - - - - - - - - Page 20 Section 5 Cleanliness Verification and Documentation 5.0 Overview - - - - - - - - - - - - - - - - - - - - - - Page 21 5.1 When to Perform Cleanliness Verification - - - - Page 21 5.2 Description of Method 1-Visual Inspection - - - Page 21 5.3 Description of Method 2 - Surface Comparison Testing - - - - - - - - - - - - - - - - - - Page 21 5.4 Description of Method 3 - NADCA Vacuum Test - Page 21 5.5 Passing Criteria for NADCA Vacuum Test - - - - - Page 23 5.6 Post-Project Documentation - - - - - - - - - - - Page 23 Definitions - - - - - - - - - - - - - - - - - - - - - - - Page 25 Reference Documents and Resources - - - - - - - - Page 29 Form to Request Formal Interpretations - - - - - - - Page 31 The NADCA Standard - Table of Contents