EnQuest operates the Magnus field east of Shetland and the Sullom Voe Terminal on the Shetland mainland, and the terminal is where a UK explosion proof mobile phone has to cope with a very large tank farm, jetties and a working fire brigade on an island site. This page is for EnQuest’s HSE, operations and telecoms teams and for the contractors who work at Sullom Voe and Magnus, and it covers what a Zone 1 handset needs to do there. The IS-04Z1 is pre-launch, with certification in progress ahead of Q4 2026. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · certification programme in progress
Sullom Voe was built between 1975 and 1981 on roughly a thousand acres at the northern end of Shetland’s mainland. It is one of the largest oil terminals in Europe, receiving production from East of Shetland through the Brent and Ninian pipelines and from West of Shetland through the Clair pipeline, with around a dozen companies holding interests in it. EnQuest took over as operator in late 2017 and added the Magnus field and a larger terminal stake when it bought them from BP in 2018. Because of its position the terminal runs its own fire brigade, and gas arriving at Sullom Voe is sent on to Magnus to support enhanced oil recovery. EnQuest’s 2025 results describe projects to connect the terminal to the UK grid and to build new stabilisation facilities, intended to cut terminal emissions by about 90 per cent, so a construction and commissioning workforce is working alongside a live plant. That mix, in a place where the nearest town is a ferry or flight away, is the context for a handset decision.
Shetland’s weather and the size of the terminal account for most of what a device has to survive. The points below are the ones a terminal reviewer raises first.
A terminal this size is mostly outdoors, and a handset is carried through horizontal rain and salt air for much of the year. IP68 sealing and rugged build are the specifications that decide whether it is still working in January.
A round at a tank farm is a long walk, and a charging point inside the boundary is rare. The 4,000 mAh battery is sized for a full shift with the camera and GNSS in use, so charging happens at handover in the control building.
Tank roofs, vents and loading arms are the places where hydrocarbon vapour is expected in normal operation, which is a Zone 1 question. The IS-04Z1 is designed to an II 2 G Ex ib IIC T4 target, and the temperature class is the figure an instrument engineer checks against the products stored.
Four-constellation GNSS lets an operator log a leak, a corroded support or a valve position as a coordinate, and the 50 MP camera attaches an image the planner can act on, which saves a second walk to the same tank.
Terminal staff, offshore crews and decommissioning contractors can be enrolled through one Android Enterprise policy, with the camera or applications restricted as the site requires and units wiped at the end of a campaign.
An operator walking the tank farm records levels and a photograph of any seal or vent defect, and a jetty team has a handset that connects to the control room during a tanker loading. Both fit the same device.
A drilling and well intervention programme brings contractor crews to Magnus for a set period. A handset issued and enrolled on arrival can carry the permit, the daily report and a camera for evidence, and be wiped when the crew leaves.
The grid connection and new stabilisation facilities involve construction contractors working near live plant. A handset limited by policy to the approved applications suits a gang that changes every few weeks.
EnQuest operates the terminal, but around a dozen companies hold interests in it, and field operators such as those on the Clair pipeline deliver into it. A visiting contractor may therefore be working for a different company under the terminal operator’s site rules. The Clair field that delivers through the West of Shetland pipeline is covered under the explosion proof phone for Adura page.
We have not verified a published supplier programme for EnQuest, so we will not name one. Ask the terminal’s procurement, HSE and telecoms teams what they require for a handheld in a classified area, including certification evidence and any site approval step.
Spares and service are harder to reach on an island than on the mainland, so ask any supplier where units and replacement parts are held. A device that can be enrolled and re-issued locally reduces the number of shipments that depend on the ferry or the flight.
No. The IS-04Z1 is pre-launch, certification is in progress, and SAMS has no pilot, order or relationship with EnQuest. This page describes what a terminal team would ask for and what the device is designed for.
Tell us the site, the zone and gas group, and roughly how many handsets. The SAMS team replies by email with the datasheet and the certification schedule for United Kingdom. The IS-04Z1 is pre-launch and certification is in progress, so there is no list price yet; indicative pricing is issued in writing against a stated quantity and site.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule for your market.
