Expansion
S-Oil's Shaheen petrochemical project was planned for completion by 2026, bringing commissioning crews.
Ulsan · intrinsically safe
Intrinsically Safe Mobile Phone Distributor in Ulsan
Ulsan is a south-east coastal industrial city of about 1.1 million people, with refineries, a petrochemical complex and the world's largest shipyard. The Ulsan Green Hydrogen Town project had laid 188 km of underground pipelines by October 2024 to carry hydrogen, a by-product of petrochemical complexes, to the city centre. Distribution partners for Ulsan are being identified ahead of the Q4 2026 launch of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicintrinsically safe
DeviceMobile Phone
RouteDistribution
WhereUlsan
Short answer. Ulsan has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for Ulsan
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | Ulsan: Tank farms, Shipyard tank and cargo-space work, Refinery process units | Classified by the site operator |
Product · Ulsan
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Ulsan. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The site · Ulsan
Ulsan at a glance: who is there, what is classified
A short profile of the site and the kinds of classified area that matter for portable equipment.
Operators and companies on site
- SK Energy
- S-Oil
- HD Hyundai Heavy Industries
Classified areas to expect
- Refinery process units
- Petrochemical plants
- Tank farms
- Shipyard tank and cargo-space work
Local conditions · Ulsan
What Ulsan means for portable equipment
Shipbuilding
HD Hyundai Heavy Industries builds tankers, LNG carriers and FPSOs at Ulsan and merged with HD Hyundai Mipo in 2025.
Field notes · Ulsan
More about Ulsan that matters for portable equipment
Ulsan: projects and investment
S-Oil is scheduled to complete the Shaheen Project, one of the world's largest petrochemical facilities with an investment of nine trillion won, by 2026, adding new process areas in Ulsan.
Ulsan: industry on the ground
Ulsan is described as South Korea's industrial powerhouse, hosting the world's largest automobile assembly plant, the world's largest shipyard and the world's third-largest oil refinery, which is owned by SK Energy.
Ulsan: people and language
Ulsan has more than 1.1 million residents and the highest GDP per capita of any region in South Korea, at about 65,352 dollars in 2020, with a deep pool of industrial technicians.
Ulsan: industry on the ground
The SK Energy refinery has a capacity of 840,000 barrels a day, and a slightly smaller 669,000 barrel a day S-Oil refinery is also in the city, so two very large refineries operate side by side.
The term · intrinsically safe
What “intrinsically safe” means for a smartphone
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In Ulsan. Refinery rounds, petrochemical turnarounds and shipyard tank checks all call for photographs, readings and permits in classified areas. A handheld intrinsically safe phone is intended for those tasks, subject to certification in progress and each operator's permits. Commissioning crews on new projects add to demand.
The route · distribution
Distributing the IS-04Z1 in Ulsan
A distributor for Ulsan would carry the IS-04Z1 after certification completes; the Q4 2026 launch is the planning date and no appointment has been made. SAMS reviews applicants one by one and prefers companies with their own Ex-competent technical and service staff, since certified devices must not be repaired outside approved channels.
What SAMS looks for in a partner
- Operator relationships
- Existing supplier registrations or a clear route to them with the main operators and contractors in Ulsan.
- Ex-competent staff
- People who understand zone classification, markings and the conditions of a certificate.
And equally important
- Local-language support
- Documentation, training and helpdesk in the languages the workforce uses.
- Service capability
- Spares, battery replacement and repair routed through SAMS-approved channels.
Questions · Ulsan
Frequently asked questions
Can we buy an intrinsically safe mobile phone in Ulsan today?
No. Nothing can be bought or taken into a classified area today: certification is in progress and launch is planned for Q4 2026. What is available now is the datasheet, the written certification schedule and evaluation units for safe-area use.
What does an intrinsically safe mobile phone in Ulsan cost?
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
What does ‘intrinsically safe’ mean for the IS-04Z1?
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
Which areas at Ulsan would use it?
Likely candidates are refinery process units, petrochemical plants, tank farms, shipyard tank and cargo-space work. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
How do I become a SAMS distributor for Ulsan?
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Ulsan.
Which hazardous-area industries are concentrated in Ulsan?
Two very large refineries, petrochemical complexes, a major shipyard, an automobile plant and a growing hydrogen network. Gas, vapour and hydrogen areas are the typical concerns, and each operator classifies its own plant, so request zone drawings before using handheld devices.
Can shipyard work in Ulsan involve classified areas as well as refinery work?
Yes. Fuel and cargo tanks, paint stores, coating bays and hot-work areas can all be treated as hazardous locations. Shipyards usually issue gas-free and hot-work permits, so ask how portable devices are controlled under those permits.
Do shipyard and refinery requirements differ in Ulsan?
They can. Shipyards work in vessel tank and cargo spaces under permits for each vessel, while refineries classify fixed process areas, so approvals and markings may differ. The IS-04Z1 has no certificate yet. Ask each facility for its own device rules.
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South Korea market guideCertification route and regulators
All guides for South KoreaEvery route we cover
Certification statusWhat is in progress
Enquiry · Ulsan
Ask about the IS-04Z1 for Ulsan, South Korea
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Enquiry · Ulsan
Launching Q4 2026
Planning for Ulsan?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.