Draft Details
- B108.2 - Liquefied natural gas refuelling st...
- DRAFT
- Legal Notice for Draft Standards
- + 1 Scope
- 1.1 Inclusions
- 1.2 Exclusions
- 1.3 Pressure terminology
- 1.4 Terminology
- 1.5 Use of SI units
- 2 Reference publications
- 3 Definitions
- + 4 General requirements
- 4.1 Discrepancy with Canadian Electrical Code, ...
- + 4.2 Refuelling station-site provisions
- 4.2.1 Site evaluation plan
- 4.2.2 Site investigations
- 4.2.3 Structural integrity
- 4.3 Marking
- 4.4 Component requirements
- 4.5 Component installation
- 4.6 Fill pressures
- 4.7 Component pressure rating
- 4.8 Requirements of the local AHJ
- 4.9 Ignition sources from a vehicle
- 4.10 Reserved — Natural gas specifications
- 4.11 Code and applicable regulations compliance...
- 4.12 Reserved — Gas handling equipment
- 4.13 LNG station security and protection requir...
- 4.14 Lighting
- 4.15 Emergency exits
- + 4.16 Siting and design considerations
- 4.16.1 Site preparation
- 4.16.2 Siting requirements
- 4.16.3 LNG storage containment restrictions
- 4.16.4 LNG storage tank siting requirements
- 4.16.5 LNG dikes and impounding areas
- 4.16.6 Fixed refuelling station enclosure
- 4.16.7 Flood protection
- 4.16.8 Vaults
- 4.16.9 Boundaries of classified areas
- 4.16.10 Overpressure protection
- + 4.17 Provisions for spill containment and leak ...
- 4.17.1 Impounding area
- 4.17.2 Containment and leak control design
- 4.17.3 Water control
- + 4.17.4 LNG leakage impoundment area holding cap...
- 4.17.4.1 Station impoundment area holding capac...
- 4.17.4.2 LNG transfer area holding capacity
- 4.17.5 Grading
- 4.17.6 Enclosed drainage channels
- 4.17.7 Fire protection
- + 4.17.8 Prescriptive and deterministic siting of...
- 4.17.8.1 Property line setbacks
- 4.17.8.2 Prescriptive siting requirements
- + 4.17.9 Deterministic siting of LNG impounding a...
- 4.17.9.1 Siting distances
- 4.17.9.2 Heat flux limitation
- 4.17.9.3 Radiant heat setback distances
- 4.17.9.4 Design spills for impounding areas
- 4.17.9.5 Gas dispersion analysis
- + 4.18 Concrete structures
- 4.18.1 Contact with LNG
- 4.18.2 Potential contact with LNG
- + 4.19 LNG site warning signs
- 4.19.1 Warnings
- 4.19.2 Colour and height
- 4.20 Existing installations
- + 5 LNG station equipment
- + 5.1 General
- 5.1.1 Installation requirements
- 5.1.2 LNG pump isolation
- 5.2 LNG equipment depressurization
- + 5.3 Pressure relief
- 5.3.1 Pressure relief general requirements
- 5.3.2 Manual depressurization
- 5.3.3 Pressure relief devices for LNG pumps
- 5.4 Refuelling station equipment supports
- 5.5 Remote notification
- 5.6 Pressure indication
- + 6 LNG storage tanks and storage facilities
- 6.1 LNG storage tank design
- 6.2 Storage facility inspection and access
- 6.3 Factory inspection and testing requirements...
- 6.4 Field inspection and testing requirements
- 6.5 LNG tank repair procedure following testing...
- 6.6 Automatic retention valve
- 6.7 Tank CRN
- + 7 Vehicle LNG dispensing
- + 7.1 Dispensing point
- 7.1.1 LNG dispensing point siting requirements
- 7.1.2 LNG dispensing point controls
- 7.2 Requirements for LNG dispensers relative to...
- 7.3 LNG dispenser safety requirements and area ...
- 7.4 LNG dispensing system design requirements
- 7.5 LNG dispensing system activation
- + 7.6 LNG dispensing hose assemblies
- 7.6.1 LNG refuelling nozzle requirements
- 7.6.2 LNG refuelling hose and vent hose
- 7.6.3 Breakaway device
- 7.7 LNG dispenser protection
- 7.8 LNG dispenser operation and maintenance
- + 8 Measurement and electrical services
- + 8.1 General
- 8.1.1 Personnel qualifications
- 8.1.2 Electrical equipment requirements
- + 8.2 LNG tank level and pressure measurement
- 8.2.1 LNG tank pressure gauge
- 8.2.2 LNG liquid level indicator and alarm
- 8.2.3 Vacuum jacket pressure reading
- + 8.3 Fail-safe shutdown
- 8.3.1 Control systems
- 8.3.2 Backup instruments
- 8.3.3 Unattended LNG refuelling station automat...
- 8.4 Classified areas
- + 8.5 Electrical seals
- 8.5.1 General requirements for electrical seals...
- 8.5.2 Requirements for primary and secondary el...
- 8.5.3 Applicable code
- 8.5.4 Leak detection
- 8.6 Conduit venting
- + 8.7 Electrical grounding and bonding
- 8.7.1 General requirement
- 8.7.2 Stray or impressed currents
- 8.8 Lightning protection
- + 9 Piping and tubing systems and components
- 9.1 Piping and tubing system requirements
- 9.2 Material requirements
- 9.3 Temperature conditions
- 9.4 General design requirements
- 9.5 Leakage prevention
- 9.6 Unaccepted materials
- 9.7 Bolted connections
- + 9.8 Coupling
- 9.8.1 Joining methods
- 9.8.2 Gasket selection
- 9.8.3 Compression coupling requirements
- 9.8.4 Mechanical connectors
- + 9.9 Expansion joints
- 9.9.1 Expansion joint requirements
- 9.9.2 Expansion joint design life
- + 9.10 Examination and inspection
- 9.10.1 Non-destructive examination
- 9.10.2 Visual inspection
- 9.11 Corrosion protection
- + 9.12 Cryogenic pipe-in-pipe systems
- 9.12.1 General requirements for cryogenic pipe-...
- 9.12.2 Inner pipe design requirements
- 9.12.3 Outer pipe design requirements
- + 9.12.4 Vacuum jacket
- 9.12.4.1 Vacuum jacket function
- 9.12.4.2 Vacuum jacket design
- 9.12.5 Annular space
- 9.13 Seismic design forces
- 9.14 Purge connections
- + 9.15 General valving requirements
- 9.15.1 Shut-off valves
- 9.15.2 Extended bonnet valve
- 9.15.3 Blind flanges and plugs
- 9.15.4 Tank connections
- + 9.16 Relief valves
- 9.16.1 Pressure-relieving safety devices
- 9.16.2 Thermal expansion relief valve
- + 10 Boil-off control and venting
- 10.1 Vent location
- 10.2 Tank boil-off
- 10.3 Boil-off during station operation
- 10.4 Gas regulator shut-off valve
- 10.5 Venting of dispenser hoses
- 10.6 Venting of vehicle tank
- 10.7 Bleed and vent connections
- 10.8 Relief valve venting
- + 11 Transfer of LNG
- + 11.1 LNG transfer equipment requirements (refer...
- + 11.1.1 Transfer system valves
- 11.1.1.1 Isolation valves
- 11.1.1.2 Check valve
- + 11.1.2 Transfer pump requirements
- 11.1.2.1 Transfer pump ESD
- 11.1.2.2 Transfer pump status light
- + 11.1.3 Transfer hose requirements
- 11.1.3.1 Hose assemblies
- 11.1.3.2 Hose couplings and unions
- 11.1.3.3 Hose and support arm requirements
- 11.1.3.4 Additional coupling requirements
- 11.1.3.5 Transfer hose support
- 11.1.3.6 Bleed and vent connections
- 11.1.3.7 LNG transfer hose protection
- 11.2 Transfer piping and tubing pre-cooling
- 11.3 Transfer area electrical classification
- 11.4 Transfer area setbacks
- + 12 Fire protection, safety, and security
- 12.1 Setbacks for sources of ignition
- 12.2 Fire detection equipment function
- 12.3 Fire protection equipment
- 12.4 Fire extinguisher
- 12.5 Reactivation of system following ESD or lo...
- 12.6 Emergency power
- 12.7 Unattended station emergency shutdown
- 12.8 Power or instrument air failure
- 12.9 Gas detection provisions
- 12.10 Communication of alarm or shutdown condit...
- 12.11 ESD signage
- + 13 Mobile refuelling units (MRUL) and mobile po...
- + 13.1 General
- 13.1.1 MRUL and PRUL refuelling scope
- 13.1.2 Units in transit
- 13.1.3 Applicability of this Code to MRUL and P...
- 13.1.4 Approvals required for MRUL and PRUL
- 13.1.5 Shut-off valve for MRUL and PRUL require...
- 13.1.6 ESD system
- 13.1.7 ESD buttons
- 13.1.8 Fire extinguishers
- 13.1.9 MRUL or PRUL vent stack
- 13.1.10 MRUL or PRUL relief device requirements...
- 13.1.11 MRUL or PRUL piping and tubing systems
- 13.1.12 MRUL and PRUL vaporizer and pressure bu...
- 13.1.13 MRUL or PRUL electrical requirements
- 13.1.14 MRUL or PRUL grounding
- 13.1.15 MRUL or PRUL hose inspection requiremen...
- + 13.2 MRUL and PRUL site requirements
- 13.2.1 MRUL and PRUL site protection
- 13.2.2 MRUL or PRUL siting
- 13.2.3 MRUL or PRUL spill containment
- 13.2.4 MRUL or PRUL building setbacks
- 13.2.5 MRUL or PRUL railroad setbacks
- 13.2.6 MRUL or PRUL property line setbacks
- 13.2.7 MRUL or PRUL movement prevention
- 13.2.8 MRUL or PRUL fixed LNG dispenser connect...
- 13.2.9 MRUL or PRUL lighting
- 13.2.10 MRUL or PRUL emergency response plan (E...
- 13.3 Signage for vehicle refuelling from MRUL a...
- + 13.4 LNG fuel transfer
- 13.4.1 Transfer from bulk container to MRUL or ...
- 13.4.2 Transfer between PRUL and MRUL
- + 14 Vehicle defuelling
- 14.1 Vehicle defuelling procedure
- 14.2 Defuelling point at a refuelling LNG stati...
- 14.3 Defuelling instructions
- + 15 L/CNG stations
- 15.1 General requirements for L/CNG stations
- + 15.2 Siting of equipment
- 15.2.1 LNG impounding area restrictions
- 15.2.2 Equipment protection
- 15.2.3 Vaporizers
- 15.2.4 LNG pumps
- 15.2.5 L/CNG equipment electrical classificatio...
- + 15.3 L/CNG pumps
- 15.3.1 L/CNG pump code requirement
- 15.3.2 L/CNG pump vibration
- 15.3.3 L/CNG pump pulsation
- 15.3.4 L/CNG pump discharge pressure protection...
- 15.3.5 L/CNG pump pre-cooling
- 15.3.6 L/CNG pump ESD integration
- 15.3.7 L/CNG pump isolation valves
- 15.3.8 L/CNG pump check valves
- 15.3.9 L/CNG pump pressure relief device
- + 15.4 Vaporizers
- 15.4.1 L/CNG vaporizer risk assessment
- 15.4.2 L/CNG vaporizer isolation valves
- 15.4.3 L/CNG vaporizer low temperature shut-off...
- 15.4.4 Enclosed L/CNG vaporizer combustion air ...
- 15.4.5 Siting of non L/CNG vaporizers
- 15.4.6 L/CNG vaporizer foundations and piping c...
- 15.4.7 Code requirement for installation of int...
- + 15.5 Emergency shutdown provisions
- 15.5.1 L/CNG station isolation valves
- 15.5.2 Integration of L/CNG ESD with CNG ESD sy...
- 15.5.3 L/CNG ESD reset
- + Annex A (normative)
- + A.1 Operation
- A.1.1 Owner’s responsibility
- A.1.2 Traffic control
- A.1.3 Inspection of vessels and relief valves
- A.1.4 Station inspection
- A.1.5 Bonding and grounding inspection
- A.1.6 Static discharge protection during vehicl...
- A.1.7 Static discharge protection during LNG tr...
- A.1.8 MRUL and PRUL operation
- A.1.9 Procedures for working alone
- A.1.10 Planned releases of LNG
- A.1.11 Manual control of bulk container pressur...
- A.1.12 Training procedures
- A.1.13 Acceptable locations for LNG fuelled veh...
- A.1.14 LNG station monitoring
- A.1.15 LNG transfer procedures
- A.1.16 Emergency response plan (ERP)
- A.1.17 Setbacks for temporary ignition sources
- A.1.18 Setbacks for combustible materials
- A.1.19 Vehicle shutdown
- + A.1.20 Personal protective equipment (PPE)
- A.1.20.1 PPE for LNG refuelling
- A.1.20.2 PPE for LNG transfer
- + A.2 Maintenance
- A.2.1 Preventative maintenance program
- A.2.2 Lock-out procedure
- A.2.3 Original equipment manufacturer (OEM) mai...
- A.2.4 Maintenance personnel qualification
- A.2.5 Minimization of venting
- A.2.6 Equipment leak inspection
- A.2.7 MRUL or PRUL maintenance
- A.2.8 Concrete inspection and repair
- A.2.9 Vacuum jacket inspection
- + A.3 Personnel training
- A.3.1 Training program and procedures
- A.3.2 Owner’s training responsibility
- A.3.3 Training providers
- A.3.4 LNG hazards and handling
- A.3.5 Training curriculum
- A.3.6 Record retention
- A.3.7 Requirements for persons employed in disp...
- Annex B — Reserved
- Annex C — Reserved
- Annex D — Reserved
- Annex E (informative)
- + Annex F (informative)
- F.1 General requirements for a documented safet...
- CSA B108.2-MarkUp Copy-May 15 2023.pdf (PDF document, 1 MB)
For PDF files, Adobe Acrobat Reader can be downloaded from the Adobe website.
1.1 Inclusions
This Code applies to
a) the design, location, construction, operation, operator training, and maintenance of LNG refuelling stations, including LNG mobile refuelling units (MRUL), with single containment storage tanks up to 265 m3 (70 000 gal) water capacity employed for vehicle LNG dispensing operations;
b) shop-fabricated and assembled refuelling stations when used to receive and store LNG to dispense LNG into vehicle fuel tanks; and
c) the LNG portion of stations that vaporize and pressurize LNG to obtain CNG, up to and including the odorizer’s outlet isolation valve. When a refuelling station dispenses fuels in addition to LNG, this Code applies only to the LNG refuelling system and equipment.
1.2 Exclusions
This Code does not apply to:
a) indoor refuelling;
b) marine vessel LNG fuelling facilities;
c) rail locomotive LNG fuelling facilities;
d) equipment, piping, or tubing downstream of the L/CNG system odorizer’s outlet isolation valve (see CSA B108.1);
e) CNG equipment including storage, compression, and/or dispensing equipment;
f) CNG mobile refuelling units (MRUG) or CNG portable refuelling units (PRUG);
g) equipment, piping, or tubing downstream of the gas pressure regulator for closed boil-off gas systems;
h) dispensing of LNG other than into vehicle or cargo fuel tanks;
i) liquefaction equipment;
j) LNG engine fuel systems;
k) LNG and CNG repair garages;
l) underground piping or tubing for LNG;
m) LNG storage tanks, pumps, and process piping or tubing when an LNG refuelling station is sharing the LNG plant storage tank; and
n) transfer of LNG from the LNG vehicle fuel storage system of one vehicle to the LNG vehicle fuel storage system of another vehicle. This does not apply to a bulk fuel storage system.
1.3 Pressure terminology
All references to pressure throughout this Code are to be considered gauge pressures, unless otherwise specified.
1.4 Terminology
In this Code, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Code.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
1.5 Use of SI units
The values given in SI units are the units of record for the purposes of this Code. The values given in parentheses are for information and comparison only.
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