Gas and dust in the same plant
The IS-04Z1 is designed for Zone 1 gas and Zone 21 dust, so one handset covers a route from reactor to bagging.
Thailand · Petrochemical
Explosion proof mobile phone for Petrochemical in Thailand
Thailand's petrochemical industry is concentrated on the Map Ta Phut estate in Rayong, with further plants in nearby estates, and an explosion proof mobile phone for Thailand's petrochemical plants has to cover gas, vapour and polymer dust. This sector page names the operators and the plant types; company pages carry the detail. The SAMS IS-04Z1 is designed for Zone 1 and Zone 21; it is pre-launch and certification is in progress. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · certification programme in progress
Local approvalIECEx · TISIECEx · TISI and NBTC route in progress
AvailabilityQ4 2026via authorised distributors
Petrochemical · the site
The Map Ta Phut estate and the plants around it
Map Ta Phut is described as Thailand's biggest industrial estate, around 180 kilometres east of Bangkok in Rayong. Operators include PTT Global Chemical (olefins, aromatics and derivatives), SCG Chemicals (the ROC and MOC crackers and polyolefin plants), IRPC, HMC Polymers and Star Petroleum Refining, with gas coming from the PTT separation plants nearby. The estate has a documented history that shapes how plants approach safety. In 2009 the courts suspended dozens of projects over health impact assessment, and in May 2012 an explosion at the Bangkok Synthetics butadiene plant killed 12 people, reported as occurring while toluene was being put into a tank. Plant teams there know what a vapour release can do.
Operators and sites
- PTT Global Chemical
- Crackers, aromatics and derivatives across several plots.
- SCG Chemicals
- Naphtha crackers and polyethylene, polypropylene and PVC chain.
- IRPC
- Refining and petrochemicals complex in Rayong province.
- HMC Polymers
- Polypropylene producer beside gas service.
- Butadiene and rubber chemicals
- Smaller derivative plants on the estate.
- IEAT
- Estate authority whose permit regime sits above each operator.
Classified units and areas
- Steam crackers
- Furnaces, quench and compression with ethylene and hydrogen.
- Aromatics units
- Benzene and toluene streams, flammable and toxic.
- Polymer plants
- Reactors, extruders and powder handling, Zone 21 beside Zone 1.
- Solvent tanks and transfer
- Toluene and similar liquids loaded to tanks and drums.
- Utilities and flare
- Steam, fuel gas and flare knock-out areas.
Built for local conditions
What a petrochemical estate does to a handset
A cracker, a solvent tank and a polymer silo are three different hazards. One device has to cope with all three.
IP ratingIP68
Battery4,000 mAh
Camera50 MP
OSAndroid 16
Group IIC across the estate
Hydrogen and ethylene mean IIB is not enough. The marking target is II 2 G Ex ib IIC T4.
Wet and salty
Rayong is humid all year, coastal, and takes the southwest monsoon from May. IP68 sealing and a rugged build are the design floor.
Thai and English crews
One Android 16 build carries both languages for a mixed Thai and expatriate workforce, so safety prompts and the app list read the same for everyone on a crew, from the operator to the visiting specialist.
Petrochemical · working and approvals
How work is organised across the estate, and what operators would ask for
Plants share the estate fence, and contractors move between them.
Overlapping shutdowns
Cracker and polymer stops bring contractor crews to several plants in the same months. A device enrolled to one operator should be re-enrolled, not reused blindly, for the next.
Two gates
IEAT sets the estate access and each operator sets its own. A handset has to satisfy both.
Vendor and equipment approval
We have not verified a published petrochemical sector approval scheme for portable devices, so we do not describe one. Ask each operator's procurement and HSE team for the steps and documents expected with an Ex certificate.
National file
TISI, the Department of Industrial Works and NBTC apply on top of the IECEx evidence. All are in progress.
Petrochemical · use cases
Where the IS-04Z1 explosion proof mobile phone goes to work.
Olefins01
Cracker rounds
An operator logs readings and photographs a leak in a group IIC area. See PTT Global Chemical.
Polymers02
Silo and extruder inspection
An inspector records dust housekeeping findings in Zone 21. See SCG Chemicals.
Solvents03
Tank loading and transfer
Operators loading a solvent tank record the transfer with a photograph and position.
Questions · Petrochemical
Frequently asked questions
Can petrochemical plants buy an explosion proof mobile phone from SAMS today?
No. The IS-04Z1 is pre-launch with a Q4 2026 launch, and IECEx, ATEX and NEC 500 certification are in progress. The datasheet and certification schedule are available now.
Why does this page mention the 2012 explosion?
It is a documented event on the estate and plant teams reference it. We cite it from published news reports only to explain why toluene and tank transfer are taken seriously.
Is one handset enough for gas and dust?
The design target is Zone 1 and Zone 21, but the area classification drawings for each plant decide which zone applies where. Contractors moving between plants should confirm the zone at each plant rather than assume the last one applies.
Does the camera matter in a petrochemical plant?
Yes, mostly as a controlled tool. Plants restrict photography near process units, so the sensible setup is a camera that the management console enables for inspection work and disables elsewhere, per site and per contractor group.
Enquiry · Petrochemical
Ask about the IS-04Z1 for Petrochemical, Thailand
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 Thailand. 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.
Enquiry · Petrochemical
Launching Q4 2026
Evaluating the IS-04Z1 for this site?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule for your market.