Zone 0 Tool Detection Alarm Reduces Risk to Riser Assembly

Severn Subsea Technologies (SST) has developed Zone 0 rated, tool detection sensor technology to reduce the risk of damage to the riser assembly during drilling and intervention operations, as the tool string is recovered to the surface.

The Tool Detection Alarm (TDA) offers a safer method of locating the tool string than relying on visual methods alone. It positively locates the position of the tool and sounds an alarm, alerting the winch operator to take action to prevent the tool string hitting the riser seal head. The portable, battery-powered TDA provides an extra layer of protection minimizing the risk of damage to completion equipment and potential loss of the tool string down the well.

Portable Tool Detection Alarm system

Portable Tool Detection Alarm system

The whole system, including the control box and re-chargeable battery, is ATEX and IECEx certified intrinsically safe equipment for use in Zone 0 gas environments.

Tim Blake, SST Site Manager, said “The Tool Detection Alarm provides a safe method of monitoring a tool string during well intervention operations. Knowing when action needs to be taken will prevent damage to completion equipment, avoiding unnecessary disruption to production”.

Quality and manufacturing

Severn Subsea Technologies is the Subsea Valve R&D Centre for control valve engineering specialist, Severn Glocon Group. ISO 9001 registered, SST is IEC 80079-34 compliant, enabling the manufacture of ATEX and IECEx certified intrinsically safe systems.

SST specialises in the research and development of subsea valves, DCVs and HIPPS; HPHT downhole tools, stab plates, smart intervention tools and advanced camera systems for oil and gas exploration and production applications.

For further information download the Tool Detection Alarm PDF.

For further information contact Severn Subsea Technologies by +44 (0) 1209 312000 and email Further details can be found at

Related Media News

  • ‘Inspire an Engineer’ Initiative

    Severn Subsea Technologies Ltd will be joining forces with government and industry to give thousands

    Read more here
  • Marine Power Systems (MPS) Unveil WaveSub Device

    Severn Subsea Technologies (SST) began working with Marine Power Systems, a wave power technology de

    Read more here
  • First Marine-i Discovery Room Event attracts huge interest

    The inaugural Marine-i Discovery Room Event was held on 27th September 2017 at St Austell Business C

    Read more here
  • Rising to the challenge

    Severn Subsea Technologies have a recent article released in the Spring 2017 issue of the 'Wave & T

    Read more here