§ 33a Control and monitoring system
Onshore facilities shall have control and monitoring systems which, using associated alarms, warn the operator of incidents, nonconformities or faults that are significant for safety. The alarms shall be issued such that they can be perceived and responded to within the time required for safe use of equipment, plants and processes.
Section last changed: 01 January 2014
Control and monitoring systems may be interfaced with other systems, but it should be ensured that this does not weaken the system. In addition, Norwegian Oil and Gas’ Guideline No. 104 should be used as a basis for protecting against ICT-related hazards.
Alarms should be defined and designed such that
- the alarms that are presented are relevant, easy to register and understand, and clearly show where any nonconformities and hazardous situations have arisen,
- the alarms are coded, categorised and assigned priority based on the safety significance of the alarms and how quickly measures must be taken to avoid undesirable consequences,
- the alarm systems allow for suppressing and reducing alarms, so as to avoid mental stress for control room personnel during interruptions in operations and accident incidents.
With regard to the design of the alarm systems, standards EN 62682 and EEMUA 191 should be used. The performance requirements of EEMUA 191 Chapter 6 and EN 62682 Chapter 16.5 should be adapted to the specific facility.