The facilities regulations § 38

§ 38 Emergency power and emergency lighting

Facilities shall have a reliable, robust and simple emergency power system that ensures sufficient supply of power to equipment and systems that shall function in the event of a main power failure.
Emergency power consumers shall be limited to equipment and systems that help maintain the integrity of the facility and safeguard personnel safety in an emergency.
It shall be ensured that interruptions do not entail operating problems for the emergency power users when switching from main power to emergency power.
The emergency power system shall have as few as possible automatic disconnection functions to ensure continuous operation.
Facilities shall be equipped with emergency lighting that ensures necessary lighting on the facility in the event of main lighting failure.
Section last changed: 01 January 2020

To fulfil the requirement regarding emergency power as mentioned in the first through third subsections, the standards NS-EN ISO 13702 Chapter 10 and Appendix C.1, NORSOK S-001 Chapter 19 and IMO 2009 MODU CODE Chapter 5 should be used. The NORSOK R-002 standard Chapter 5.15 should be used for lifting equipment.
For design of emergency lighting as mentioned in the last subsection, the EN 1838 standard should be used. There should be emergency lighting in those areas where personnel can be located in a hazard and accident situation. The emergency lighting should contribute to ensure evacuation on and from the facility and indicate the location of manual firefighting equipment and other safety equipment. The emergency lighting should be connected to the emergency power system or have its own battery as a power source.