BS ISO 21925-1:2018 Fire resistance tests. Fire dampers for air distribution systems Mechanical dampers

Fire tests
Construction materials
Fire
Pipes
Ignitability
Fire-test classifications
Flame-spread classifications
Floors
Thermal insulating materials
Construction systems parts
Fire resistance
Floor coverings
Classification systems

Link: BS ISO 21925-1:2018 Fire resistance tests. Fire dampers for air distribution systems Mechanical dampers
Source: BSI Standards

BS EN 50129:2018 Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling

Electronic equipment and components
Approval testing
Signal devices
Fail-to-safety devices
Control systems
Safety measures
Acceptance (approval)
Performance testing
Risk assessment
Railway signals
Safety devices
Signals
Quality assurance
Railway equipment
Railway control systems

Link: BS EN 50129:2018 Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling
Source: BSI Standards