Daesan, on the west coast, is a younger industrial complex than Ulsan or Yeosu, and an explosion proof mobile phone for South Korea has to be specified for a site where refining and petrochemicals sit close together. Hyundai Oilbank runs its refinery and petrochemical operations there. This page is for the HSE, instrumentation and telecoms teams who decide what may be carried into its classified areas. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · certification and vendor documentation in progress
Hyundai Oilbank's refinery is at Daesan in Chungcheongnam-do, on the Yellow Sea coast, within a petrochemical complex shared with other Korean producers. Trade press describes a base-oil joint venture with Shell at Daesan, and the company's petrochemical units sit alongside the refinery. For a handset the picture is a conventional integrated site: crude and vacuum distillation, conversion units, hydrogen-bearing treating loops, and aromatics and olefins units, together with tank farms and a marine terminal. Hydrocarbon gas and vapour are the main classification drivers, with hydrogen present in treating and conversion, and a conservative operator will treat IIC as the relevant gas group wherever hydrogen is in play. Which areas are Zone 1 or Zone 2 comes from the site's classification drawings.
Daesan has its own character: a newer site, a coastal climate and a layered ownership. These are the points we expect an engineer to raise.
Newer plants tend to have more complete and consistent area classification drawings, which makes it easier to state where a device may go. The IS-04Z1 design target of II 2 G Ex ib IIC T4 is intended to map straight onto a Zone 1 gas area on such a drawing.
Daesan sits on an exposed coast, where winter wind and cold are the issue rather than heat. IP68 sealing and rugged build are specified across Korea's seasonal range, and the 4,000 mAh battery is sized for a full outdoor shift.
The operator belongs to a group that also owns a major shipbuilder. That may shape group-level vendor conversations, but site equipment approval at Daesan remains the refinery's own decision.
A technician moving between a crude unit and a petrochemical unit should not need a different device. The Zone 1 gas target covers both, and the camera and GNSS features are the same wherever the person is.
Android Enterprise enrolment and MDM allow work profiles per team, camera policy by area, and a clean retirement of devices at the end of a shutdown contract.
A refinery of this kind runs continuous shifts with operators on rounds and permit-to-work controlling maintenance. Planned shutdowns bring in contractors in large numbers, so gate processing and device handover happen at scale. Daesan is a coastal industrial site rather than a city centre, so local spares and a defined swap process for a failed device matter. Ask the site team what the current rule is for personal phones, photography and radios.
An operator reads gauges, photographs a flange weep and phones the shift supervisor in one device, replacing a paper sheet and a radio.
A contractor team receives enrolled devices with the permit application and area map, returning them for wipe and reissue when the shutdown ends.
Terminal staff walk berths and tank farms in wind and rain, recording a position and photograph for each inspection point.
We have no insight into Hyundai Oilbank's internal approval process and will not guess at a programme name. Ask the operator's procurement and hse teams for its requirements before any evaluation. The usual items for a Korean refinery are below.
No. The device is pre-launch and certification is in progress ahead of the Q4 2026 launch. No evaluation, listing or order exists at Hyundai Oilbank.
Not directly. Equipment approval at Daesan is a site decision by the refinery's own engineering and HSE staff, although group-level relationships may be visible in procurement conversations.
A more uniform, better documented classification usually makes it easier to say where a device with a defined rating may be used, but the final certificate scope, not the age of the plant, decides.
Not necessarily. Units operated by joint-venture partners may run their own rules, so confirm which organisation controls each area.
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 South Korea. 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.
