BS EN 13611:2019 Safety and control devices for burners and appliances burning gaseous and/or liquid fuels. General requirements

Burners
Instructions for use
Control equipment
Temperature controllers
Pressure regulators
Pressure equipment
Seals
Control devices
Safety devices
Valves
Safety measures
Type testing
Gases
Controllers
Control systems
Marking
Gas-powered devices

Link: BS EN 13611:2019 Safety and control devices for burners and appliances burning gaseous and/or liquid fuels. General requirements
Source: BSI Standards

ISO 21809-11:2019 Petroleum and natural gas industries. External coatings for buried or submerged pipelines used in pipeline transportation systems. Coatings for in-field application, coating repairs and rehabilitation.

Link: ISO 21809-11:2019 Petroleum and natural gas industries. External coatings for buried or submerged pipelines used in pipeline transportation systems. Coatings for in-field application, coating repairs and rehabilitation.
Source: BSI Standards