Climate
The Gulf Coast location is hot and humid with hurricane exposure, which shapes turnaround scheduling.
A separate steam cracker of 1 million tonnes a year, a joint venture with BASF, now runs mainly on locally produced ethane and butane. Zone 1 and Zone 21 areas arise at refinery process units, petrochemical plants and marine terminals. Distribution partners for Port Arthur, Texas are being identified ahead of the Q4 2026 launch of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. Port Arthur, Texas 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.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Protection concept | Flameproof (Ex d) or intrinsic safety (Ex i) | Intrinsic safety, level ib |
| Zone suitability | Zone 1 gas and Zone 21 dust | Design target for Zone 1 and 21 |
| Certificate | Number, issuing body and schedule of conditions | In progress; not issued |
| Where it applies | Port Arthur, Texas: Tank farms, Marine terminals, Refinery process units | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Port Arthur. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
A short profile of the site and the kinds of classified area that matter for portable equipment.
The Gulf Coast location is hot and humid with hurricane exposure, which shapes turnaround scheduling.
Motiva's Port Arthur refinery reached 600,000 barrels a day in 2012, and the company describes its refinery as North America's largest. Motiva has been wholly owned by Saudi Aramco since 2017.
The Motiva Port Arthur refinery covers about 1,400 acres, started in 1903 on 25 acres at 850 barrels a day and is described by its operator as the largest refinery in North America.
Port Arthur lies 90 miles east of Houston on the west side of Sabine Lake, with the Rainbow Bridge across the Neches River connecting it to Bridge City.
Port Arthur is tied with Lake Charles and Astoria as the most humid city in the contiguous United States, with relative humidity around 90 percent in the morning.
Motiva also runs the largest base oil plant in the Western Hemisphere, with a base oil capacity of 40,000 barrels a day supplied to customers in more than 15 countries.
“Explosion proof” is the phrase most buyers use for equipment that may be taken into a classified hazardous area. Strictly, it covers several protection concepts: a flameproof enclosure (Ex d) contains an internal explosion, while intrinsic safety (Ex i) limits electrical energy so that an ignition cannot start. Phones are normally intrinsically safe, because a flameproof handset would be too heavy to carry all shift.
The IS-04Z1 uses intrinsic safety, with a marking target of Ex ib IIC T4, and is designed for Zone 1 and Zone 21. It is pre-launch, certification is in progress and no certificate has been issued.
In Port Arthur, Texas. In Port Arthur, explosion-proof is a common phrase for equipment used at refinery process units, petrochemical plants, tank farms and marine terminals. The protection concepts differ: flameproof Ex d versus intrinsic safety. The IS-04Z1 is designed around intrinsic safety, aiming for an Ex ib marking.
Distribution of the IS-04Z1 is by authorised partners only, and SAMS has not yet granted a territory for Port Arthur, Texas. 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.
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
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.
It is intrinsically safe (marking target Ex ib IIC T4), which is the usual way to make a phone for hazardous areas. It is not a flameproof (Ex d) design, and certification is still in progress.
Likely candidates are refinery process units, petrochemical plants, tank farms, marine terminals. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
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 Port Arthur, Texas.
Port Arthur is among the most humid places in the contiguous United States, with morning humidity near 90 percent. Condensation inside poorly sealed devices is a real risk, so choose sealed housings and follow the maker's care instructions.
Large refineries run planned turnarounds that bring thousands of contractors on site for a limited period. Operators typically plan equipment and induction well in advance, so contact the site's maintenance planners early and confirm approval requirements.
Port Arthur is hot and humid with hurricane exposure, which shapes turnaround scheduling. A rugged IP68 phone helps with water and dust, and managed enrolment lets a contractor lock or recover devices when a site closes. Store and charge devices in safe areas away from classified plant.
Other guides for Port Arthur, other places in United States, and the pages behind them.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.