More precise level measurement for better process control

CASE STUDY · OFFSHORE OIL AND GAS

More precise level measurement for better process control

New level transmitters on a first-stage separator replaced instruments with spurious failures, giving the control room measurements it can trust.

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1The challenge

Spurious failures on the existing level instruments on a first-stage separator created uncertainty in the central control room and made process control difficult. The new instruments needed a modified design to fit where headroom was limited.

2Our solution

  • Two new nucleonic level transmitters, with design modifications for the limited headroom
  • Fibre from the equipment room to the separator, power supply and integration into the technical network
  • Modifications in the DCS and HMI, and signals made available for onshore analysis
  • A change-over strategy that allowed the work to be done during operation
  • A plan for safe handling of radioactive waste, and full lifecycle documentation

3The result

  • More precise level measurement and fewer false alarms in the control room
  • Slugs can now be detected
  • Chemical additives against emulsion and foam can be reduced, based on precise measurements
  • Stable operation since start-up

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