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. This page explains what to look for in a rugged smartphone for Port Arthur, Texas, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Port Arthur, Texas: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
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.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ingress protection | IP65 to IP68 sealing | IP68 design |
| Drop and shock | A stated drop height onto concrete | Specification on request |
| Explosion protection | A separate certificate and marking | In progress; not issued |
| Where it applies | Port Arthur, Texas: Refinery process units, Petrochemical plants, Tank farms | 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.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
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 TotalEnergies refinery completed the largest turnaround in its history in 2023, which shows how large the periodic shutdown work is on these complexes.
Other investments in the city include Valero's 775 million dollar petrochemical plant expansion and a 1.75 billion dollar gasification and cogeneration unit at the BASF and Fina site.
TotalEnergies' Port Arthur platform has a crude processing capacity of 238,000 barrels a day and dates from 1936, with a coker added in 2011 to handle heavy crude.
An ethane cracker with a capacity of 1 million tonnes of ethylene a year, built by the Baystar joint venture for about 2 billion US dollars, was inaugurated at Port Arthur in 2022.
A rugged phone is built to survive water, dust, drops and rough handling, usually rated by an IP code and a drop specification. Ruggedness is an environmental property: it says nothing about whether a phone may be used where flammable gas or dust is present. That is decided by explosion-protection certification and marking.
The IS-04Z1 combines both: an IP68 sealed rugged build and a design for Zone 1 and Zone 21 (marking target Ex ib IIC T4). The explosion-protection certificates are in progress and none has been issued.
In Port Arthur, Texas. The Gulf Coast location is hot and humid with hurricane exposure, which shapes turnaround scheduling. Marine terminals add spray and wet decks. IP68 helps with water and dust ingress, but it is not explosion protection, which depends on the Ex marking still being certified for the IS-04Z1.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
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 designed to IP68 sealing, with glove-friendly controls. Ruggedness is not explosion protection: that depends on the certificates, which are 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.
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.
The city is about 90 miles east of Houston, the usual gateway, and lies on the west side of Sabine Lake. Confirm customs and site delivery arrangements with your freight forwarder and the plant's receiving contact.
Process units, tank farms, loading jetties and crackers all have classified areas for flammable gas and vapour, and the operator defines their extent. Request the area classification drawings and the site's equipment rules before any visit.
Motiva's website refers to supplier resources and an SAP Ariba platform, so formal onboarding is likely at large operators. Equipment approval is a separate matter. The IS-04Z1 has no certificate yet. Confirm requirements with the site operator before approaching procurement.
More on Port Arthur, and on other places in United States.
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.