CSA CGA B105 : 1993

Si (Metric)
The Interprovincial Gas Advisory Council
The CGA B105 Committee on the Installation Code For
Digester Gas Systems
Part I - General requirements for use of this code
1 Scope
   1.1 General
   1.2 Scope for each section of the code
2 Definitions, abbreviations and reference publications
   2.1 Definitions
   2.2 Abbreviations
   2.3 Reference publications
Part II - Digester gas systems
3 General
   3.1 Approval of appliances, accessories, components,
         and equipment
   3.2 Quality of labour
   3.3 Personnel qualifications
   3.4 Control of sources of ignition
   3.5 Isolation of safety devices
   3.6 Existing equipment and materials
   3.7 Compliance with other codes
   3.8 Prohibited practices
4 Installation requirements for appliances and equipment on
   digester gas systems
   4.1 Check for suitability of use
   4.2 Appliance connections
   4.3 Accessibility
   4.4 Responsibilities of the installer
   4.5 Damaged and used appliances
5 Requirements for the installation of specific types of
   appliances and equipment on digester gas systems
   5.1 General
   5.2 Compressors
   5.3 Boilers
   5.4 Waste gas burner
   5.5 Stationary gas engines
   5.6 Incinerators
6 Air for combustion, venting and ventilation in digester
   gas systems
   6.1 General
   6.2 Automatically operated dampers
   6.3 Installation of draft control devices
   6.4 Induced or forced draft devices
7 Piping and tubing systems and fittings in digester gas systems
   7.1 General
   7.2 Material
   7.3 Requirements for specific types of piping and fittings
   7.4 Purging
   7.5 Digester gas piping passing through walls and partitions
   7.6 Buried piping
   7.7 Gas piping identification
   7.8 Manual shut-off valves
   7.9 Drip traps
   7.10 Digester gas instrumentation
   7.11 Check valves
   7.12 Sediment traps
   7.13 Bleed vents
   7.14 Gas pressure regulators
   7.15 Gas filters
8 Digesters and gas storage tanks
   8.1 Water seal skirt depth
   8.2 Coatings
   8.3 Manholes
   8.4 Gas draw off
   8.5 Gas mixing supply piping
   8.6 Liquid overflow
   8.7 Pressure/Vacuum relieving on digesters
   8.8 Digester gas storage containers
   8.9 Sludge holding tanks
   8.10 Inspection points
9 Building and building services for digester gas systems
   9.1 Compressor rooms
   9.2 Boiler rooms
   9.3 Hazardous areas
   9.4 Combustible gas detection equipment
10 Testing hazardous areas and digester gas systems
   10.1 Leakage tests for digesters
   10.2 Pressure tests for digesters
   10.3 Vacuum tests
   10.4 Testing after cleanout
   10.5 Pressure testing for piping
   10.6 Testing hazardous areas
11 Electrical requirements for digester gas systems
   11.1 General
12 Operation and maintenance of digester gas systems
   12.1 General
   12.2 Corrosion of the piping system
   12.3 Plans and records
   12.4 Digester gas system maintenance
   12.5 Maintenance of compressors and relief devices
   12.6 Valve maintenance
   12.7 Pressure/Vacuum relief valve protective housing maintenance
   12.8 Drip trap maintenance (continuous-flow type)
   12.9 Gas detection system maintenance
   12.10 Ventilation systems for hazardous areas
Part III - Landfill gas systems
13 General
   13.1 Approval of appliances, accessories, components,
         and equipment
   13.2 Quality of labour
   13.3 Personnel qualifications
   13.4 Control of sources of ignition
   13.5 Isolation of safety devices
   13.6 Existing equipment and materials
   13.7 Compliance with other codes
   13.8 Prohibited practices
14 Installation requirements for appliance and equipment
   on landfill gas systems
   14.1 Check for suitability of use
   14.2 Appliance connections
   14.3 Accessibility
   14.4 Responsibilities of the installer
   14.5 Damaged and used appliances
15 Requirements for the installation of specific types of
   appliances and equipment on landfill gas systems
   15.1 General
   15.2 Blowers
   15.3 Boilers
   15.4 Waste gas burner
   15.5 Stationary gas engines
   15.6 Incinerators
16 Air for combustion, venting and ventilation in landfill
   gas systems
   16.1 General
   16.2 Automatically operated dampers
   16.3 Installation of draft control devices
   16.4 Induced or forced draft devices
17 Piping and tubing systems and fittings in landfill gas systems
   17.1 General
   17.2 Material
   17.3 Requirements for specific types of piping and fittings
   17.4 Purging
   17.5 Landfill gas piping passing through walls and partitions
   17.6 Buried piping
   17.7 Gas piping identification
   17.8 Manual shut-off valves
   17.9 Drip traps
   17.10 Landfill gas instrumentation
   17.11 Check valves
   17.12 Sediment traps
   17.13 Bleed vents
   17.14 Gas pressure regulations
   17.15 Gas filters
18 Building and building services for landfill gas systems
   18.1 Fan or blower room
   18.2 Boiler rooms
   18.3 Hazardous areas
   18.4 Combustible gas detection equipment
19 Testing hazardous areas and landfill gas systems
   19.1 Pressure testing for piping
   19.2 Testing hazardous areas
20 Electrical requirements for landfill gas systems
   20.1 General
21 Operation and maintenance of landfill gas systems
   21.1 General
   21.2 Corrosion of the piping system
   21.3 Plans and records
   21.4 Gas system maintenance
   21.5 Maintenance of blowers and relief devices
   21.6 Valve maintenance
   21.7 Drip trap maintenance (continuous-flow type)
   21.8 Gas detection system maintenance
   21.9 Ventilation systems for hazardous areas