Hydrogen
A hydrogen shipment centre began operating at the Daesan plant in November 2025.
Daesan · IECEx
IECEx Mobile Phone in Daesan
Seosan had a population of roughly 175,000 in the 2017 census, which sets the scale of the local labour pool beside the coastal industrial area. HD Hyundai Oilbank, which is headquartered in Seosan, and the merged H&L Advanced petrochemical business operate there, so process areas are Zone 1 and Zone 2. If you are specifying an IECEx mobile phone for Daesan, this page covers the markings, the approvals and the current certification status 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 topicIECEx
DeviceMobile Phone
RouteSpecification
WhereDaesan
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Daesan: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · IECEx
Checklist: IECEx mobile phone for Daesan
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Certificate of conformity | Number checkable on the IECEx online register | In progress; not issued |
| Standards edition | The IEC 60079 edition the certificate cites | Stated on the certificate when issued |
| Schedule of conditions | Limits of use, batteries and accessories | Published with the certificate |
| Where it applies | Daesan: Naphtha cracker and petrochemical units, Refinery process units, Tank farms | Classified by the site operator |
Product · Daesan
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 Daesan. 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 · Daesan
Working in Daesan: operators and classified areas
The companies on site and the hazardous-area types a handset is likely to meet there.
Operators and companies on site
- H&L Advanced (HD Hyundai Oilbank and Lotte Chemical, 50% each)
- HD Hyundai Oilbank
Classified areas to expect
- Naphtha cracker and petrochemical units
- Refinery process units
- Tank farms
- Hydrogen handling
Local conditions · Daesan
Site conditions at Daesan: what wears and what limits equipment
Merger
HD Hyundai Chemical absorbed Lotte Chemical's Daesan unit to form H&L Advanced, launched at the Daesan plant on 4 September 2026.
Field notes · Daesan
More about Daesan that matters for portable equipment
Daesan: logistics and access
Seosan is the west coast transport hub where the Seohaean and Daejeon-Dangjin Expressways and National Highways 29, 32, 38 and 45 meet, which helps trucking and equipment delivery.
Daesan: climate and equipment wear
The summer monsoon lasts about three weeks in June or July with strong winds and heavy rain, and mild typhoons can affect the area in summer, so outdoor work is often rescheduled.
Daesan: projects and investment
Upgrades completed by 2021 lifted Daesan capacity to about 1.5 million tonnes a year of ethylene and 1.1 million of propylene, and let the plant also crack propane.
Daesan: industry on the ground
HD Hyundai Chemical is owned 60% by HD Hyundai Oilbank and 40% by Lotte Chemical, and in late 2025 the partners agreed to consolidate their Daesan naphtha crackers, subject to ministry approval.
The term · IECEx
What “IECEx” means for a smartphone
IECEx is the international scheme for certifying equipment used in explosive atmospheres. A certificate of conformity is issued by an accredited certification body against a specific edition of the IEC 60079 standards and carries a schedule of conditions of safe use. It is not a legal requirement in most countries on its own, but many national schemes accept it as the technical basis.
The IECEx certificate for the IS-04Z1 is in progress and has not been issued. The marking target is Ex ib IIC T4, the intrinsic safety concept for Zone 1 gas with the hardest gas group (IIC) and a 135 °C temperature class.
In Daesan. Daesan's cracker and refinery work draws overseas licensors and specialist contractors alongside Korean firms. IECEx gives them a certificate of conformity and a schedule of conditions to read. The IS-04Z1 has neither yet, as certification is in progress, so only the target documents can be discussed.
The route · specification
Specifying an IECEx mobile phone for Daesan
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Check on the paper
- Marking
- Equipment group, category, protection concept, gas group and temperature class, matched to the area drawing.
- Certificate and schedule
- A certificate number, issuing body and the schedule of conditions, not a brochure claim.
- Standards edition
- The IEC 60079 or national standard edition the certificate was issued against.
Check for the IS-04Z1
- Marking target
- II 2 G Ex ib IIC T4: a target, not yet a certificate.
- Certificate status
- IECEx, ATEX, UKEX and NEC 500 in progress; none issued.
- Operator approval
- Separate from the certificate and handled with the site operator.
Questions · Daesan
Frequently asked questions
Can we buy an IECEx mobile phone in Daesan 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 an IECEx mobile phone in Daesan cost?
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
Does the IS-04Z1 hold an IECEx certificate?
No. The IECEx certificate is in progress and has not been issued. SAMS will publish the number when it exists.
Which areas at Daesan would use it?
Likely candidates are naphtha cracker and petrochemical units, refinery process units, tank farms, hydrogen handling. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Is intrinsically safe the same as explosion proof?
Not exactly. Explosion proof is a broad everyday term; intrinsic safety is one protection concept, which limits energy so ignition cannot occur. Flameproof (Ex d) is a different concept that contains an explosion. The IS-04Z1 is intrinsically safe by design.
Where is Daesan and how do I reach it for site work?
Daesan is part of Seosan on the Yellow Sea coast, about 125 km south of Seoul, and the area is served by the Seohaean Expressway and several national highways. Most visitors travel by road from Seoul or Daejeon, so plan equipment transport accordingly.
What weather issues affect handheld devices at Daesan?
Spring Asian dust, a short but heavy summer monsoon, occasional typhoons and cold winters all occur. Typically devices need good dust and water ingress protection and a reliable battery in the cold, and sites may pause outdoor work in severe weather.
Does hydrogen handling affect which phone can be used?
Yes. Hydrogen is a Group IIC gas, so equipment for those areas needs a suitable gas-group marking. The IS-04Z1 target marking includes IIC but no certificate has been issued. Ask the operator which Daesan areas it classes as hydrogen hazards.
Related guides
Keep exploring
Related guides for Daesan and for South Korea.
Intrinsically Safe Mobile Phone Distributor in DaesanSame place, different guide
Industrial Mobile Phone Distributor in DaesanSame place, different guide
Explosion-Proof Mobile Phone in DaesanSame place, different guide
Hazardous Area Mobile Phone in DaesanSame place, different guide
Rugged Mobile Phone Distributor in DaesanSame place, different guide
Ex-Proof Mobile Phone Distributor in DaesanSame place, different guide
ATEX and IECEx Mobile Phone Distributor in PohangElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in BusanElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in IncheonElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in YeosuElsewhere in South Korea
South Korea market guideCertification route and regulators
All guides for South KoreaEvery route we cover
Certification statusWhat is in progress
Enquiry · Daesan
Ask about the IS-04Z1 for Daesan, South Korea
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Enquiry · Daesan
Launching Q4 2026
Planning for Daesan?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.