The Norwegian offshore safety authority has told ExxonMobil to make improvements at its Ringhorne site in the Balder field.
An audit at the facility raised rule breaches in relation to the follow up of performance requirements, performance requirements and penetrations in fire walls.
Four improvement points were found in relation to automatic fire water discharge in the event of gas detection, passive fire protection, gas detection and response time for process shutdown functions.
The audit focused on how ExxonMobil is ensuring compliance with requirements for barriers and barrier management in relation to safety systems, ICT security and process and technical safety.
The company has been asked to report on how the non-conformities will be dealt with by 31 August this year.
Production at the Ringhorne began in 2003, and the site has been developed using a combined accommodation, drilling and wellhead facility.