Merger
HD Hyundai Chemical absorbed Lotte Chemical's Daesan unit to form H&L Advanced, launched at the Daesan plant on 4 September 2026.
Daesan · intrinsically safe
Intrinsically Safe Smartphone in Daesan
Daesan is a petrochemical complex in Seosan, South Chungcheong Province, on the Yellow Sea coast. 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. This page explains what to look for in an intrinsically safe smartphone for Daesan, and where the IS-04Z1 stands against that list today.
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
DeviceSmartphone
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 · intrinsically safe
Checklist: intrinsically safe smartphone for Daesan
| 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 | 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
Daesan: where the IS-04Z1 would work
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
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
Ownership
HD Hyundai Oilbank and Lotte Chemical each hold 50% and each contributed 600 billion won.
Field notes · Daesan
More about Daesan that matters for portable equipment
Daesan: climate and equipment wear
In spring, strong winds carry fine Asian dust from the Chinese mainland, prompting many residents to wear masks, so dust protection and cleaning matter for equipment used outdoors.
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.
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 Daesan. Rounds across a cracker, refinery units and tank farms are long, and turnaround crews work in tight windows. A handheld intrinsically safe phone is intended for photographs, readings and checklists in those areas. Use depends on certification in progress and on the operator's own permit rules.
The route · specification
Specifying an intrinsically safe smartphone 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 intrinsically safe smartphone in Daesan 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 smartphone in Daesan cost?
There is no list price yet. SAMS gives indicative pre-launch pricing in writing, against a stated quantity and site, and does not commit to a lead time before certification completes.
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 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
Other guides for Daesan, other places in South Korea, and the pages behind them.
Ex-Proof Mobile Phone in DaesanSame place, different guide
Hazardous Area Mobile Phone in DaesanSame place, different guide
IECEx Mobile Phone Distributor in DaesanSame place, different guide
ATEX and IECEx Mobile Phone Distributor in DaesanSame place, different guide
Rugged Mobile Phone Distributor in DaesanSame place, different guide
Explosion-Proof Mobile Phone in DaesanSame place, different guide
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
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 · Daesan
Ask about the IS-04Z1 for Daesan, 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 · Daesan
Launching Q4 2026
Planning for Daesan?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.