BS IEC 60772:2018 Nuclear power plants. Instrumentation systems important to safety. Electrical penetration assemblies in containment structures .

Nuclear fuels
Nuclear-electric power stations
Nuclear power
Transmitters
Nuclear physics
Safety
Energy sources
Health and safety requirements
Nuclear technology

Link: BS IEC 60772:2018 Nuclear power plants. Instrumentation systems important to safety. Electrical penetration assemblies in containment structures .
Source: BSI Standards

BS EN IEC 62485-4:2018 Safety requirements for secondary batteries and battery installations Valve-regulated lead-acid batteries for use in portable appliances

Storage batteries
Nickel-cadmium batteries
Lead-acid batteries
Hazards
Alkaline batteries
Marking
Battery-powered devices
Electrical household appliances
Instructions for use
Portable
Safety measures
Electric cells
Electrical equipment
Electrical safety

Link: BS EN IEC 62485-4:2018 Safety requirements for secondary batteries and battery installations Valve-regulated lead-acid batteries for use in portable appliances
Source: BSI Standards