Shipbuilding
HD Hyundai Heavy Industries builds tankers, LNG carriers and FPSOs at Ulsan and merged with HD Hyundai Mipo in 2025.
Ulsan · hazardous area
Hazardous Area Smartphone Distributor in Ulsan
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. Process plants, tank farms and shipyard work create extensive Zone 1 and Zone 2 areas. A hazardous area smartphone distributor in Ulsan would carry the IS-04Z1 to these buyers once certification completes.
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 topichazardous area
DeviceSmartphone
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.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
At a glance · hazardous area
Checklist: hazardous area smartphone for Ulsan
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Zone | 0, 1 or 2 for gas; 20, 21 or 22 for dust | Designed for Zone 1 and Zone 21 |
| Gas group | IIA, IIB or IIC | IIC (target) |
| Area drawing | The operator's own classification drawing | Decided by the site operator |
| 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
Conditions in Ulsan that affect handheld equipment
Refining
SK Energy and S-Oil operate refineries in Ulsan; S-Oil's Onsan refinery had about 650,000 barrels per day in 2016.
Field notes · Ulsan
More about Ulsan that matters for portable equipment
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.
Ulsan: who works there
Ulsan is the corporate base of the Hyundai group, and SK Energy and S-Oil also operate there, so supplier registration usually runs through each company's own vendor process.
Ulsan: climate and equipment wear
Ulsan has a monsoon-influenced humid subtropical climate, with monthly means from 2.0 degrees Celsius in January to 25.9 degrees in August and high rainfall from April to September.
Ulsan: infrastructure
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.
The term · hazardous area
What “hazardous area” means for a smartphone
A hazardous area is a place where flammable gas, vapour or combustible dust may be present. Standards divide these into zones: Zones 0, 1 and 2 for gas and vapour, and Zones 20, 21 and 22 for dust. Zone 1 and Zone 21 are the tier where an explosive atmosphere is likely to occur in normal operation, which is where the IS-04Z1 is designed to work. Anything carried in must be marked for the zone, gas group and temperature class of the area.
No certificate has been issued for the IS-04Z1 yet, so it must not be taken into a classified area until the certificate covering it exists and the site operator has accepted it.
In Ulsan. Classified areas include refinery process units, petrochemical plants, tank farms and shipyard tank and cargo-space work. The operators classify them, not SAMS. With SK Energy, S-Oil and the shipyard all active, a specifier should ask each facility for its own classification documents.
The route · distribution
Distributing the IS-04Z1 in Ulsan
Distribution of the IS-04Z1 is by authorised partners only, and SAMS has not yet granted a territory for Ulsan. Each application is reviewed on its merits. Because opening a certified Ex handset in an ordinary workshop invalidates its certificate, the partner must be able to support and service the device locally.
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 a hazardous area smartphone in Ulsan today?
Not yet. The IS-04Z1 is pre-launch and its certification is still in progress ahead of a Q4 2026 launch. No unit goes into a classified area before the certificate covering it exists. The datasheet, the certification schedule and safe-area evaluation units are available now.
What does a hazardous area smartphone 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.
Which hazardous areas is the IS-04Z1 designed for?
Zone 1 and Zone 21 (gas and dust) with gas group IIC and temperature class T4, subject to certification. It must not be used in a classified area before its certificate is issued and the site has accepted it.
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.
Related guides
Keep exploring
Other guides for Ulsan, other places in South Korea, and the pages behind them.
ATEX and IECEx Mobile Phone Distributor in UlsanSame place, different guide
Industrial Mobile Phone Distributor in UlsanSame place, different guide
Ex-Proof Mobile Phone Distributor in UlsanSame place, different guide
Rugged Mobile Phone in UlsanSame place, different guide
IECEx Mobile Phone in UlsanSame place, different guide
Intrinsically Safe Mobile Phone in UlsanSame place, different guide
ATEX and IECEx Mobile Phone Distributor in BusanElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in YeosuElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in DaesanElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in PohangElsewhere in South Korea
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.