An explosion proof mobile phone for ExxonMobil in the United States has to work in two very different places: the Baytown complex and the Beaumont refinery on the Texas Gulf Coast, and the Permian wellpads that grew sharply after the Pioneer acquisition. This page is written for the HSE, process safety and telecoms people who decide what may be carried into those classified areas. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · certification programme in progress
The Baytown complex was founded in 1919 and now covers about 3,400 acres on the Houston Ship Channel, about 25 miles east of Houston. ExxonMobil’s own fact sheets describe three plants on that one site: a refinery of about 588,000 barrels a day, a chemical plant and an olefins plant that has operated since 1979, with a third ethylene facility completed in 2018. The Baytown area has roughly 3,300 ExxonMobil employees alongside about 4,000 contract personnel, which is the number a safety officer will recognise as the real headcount behind the gate. At Beaumont, an expansion that started up in March 2023 added 250,000 barrels a day, taking total capacity to 630,000. In the Permian, the Pioneer acquisition lifted ExxonMobil to more than 1.4 million net acres across the Delaware and Midland basins. ExxonMobil also holds 30 per cent of Golden Pass LNG at Sabine Pass, Texas, with QatarEnergy holding the other 70 per cent.
A single company runs a 3,400-acre integrated complex and a dispersed field estate. The two need the same hazardous-area design but different management.
With around 4,000 contract personnel alongside employees at the Baytown area, device enrolment is a daily task, not an annual one. Android Enterprise lets an administrator hand a device to a new crew, restrict the application set and wipe it when the job ends.
Cracker and hydrotreater areas are where group IIB and IIC gases appear. The IS-04Z1 marking target of II 2 G Ex ib IIC T4 is aimed at that end of the range, and the temperature class still has to be checked against the area drawing.
Photography on a refinery is controlled. A 50 MP camera with a console switch that disables it by area or by user keeps the evidence value without leaving a free camera on site.
A lease operator on a pad can be the only person for miles. Four-constellation GNSS and IP68 construction suit lone-worker use in dust, rain and heat, and the 4,000 mAh battery is specified to last the shift.
We have not verified any specific ExxonMobil vendor-registration programme, and we do not describe one. These are the questions any large US refiner raises before a device crosses the fence.
OSHA’s rule on electrical equipment in classified locations means the mark has to match the area. A device listed for Class I Division 1 Groups C and D is not automatically good for hydrogen.
Ask the Baytown or Beaumont procurement and HSE teams who signs off new portable electronics, and whether the change goes through a management-of-change record.
Uncertified repair voids the listing. Agree where spares are held, how faulty units are returned and how batteries are charged and stored in the safe area.
No. The device is pre-launch with certification in progress, and SAMS has no order, pilot or supply relationship with ExxonMobil. Any site decision follows the certificates and the site’s own review.
Both are Gulf Coast refineries in the same climate, so the handset requirements are similar. Beaumont is a refinery with a recent expansion; Baytown adds chemical and olefins units with their own hazards. In both, the area classification drawing for the specific unit decides.
It changes the size of the estate, not the physics. Larger fleets make centralised management and consistent enrolment more important, which is what Android Enterprise and existing MDM consoles are 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 States. 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.
