Scale
The ExxonMobil refinery covers about 3,400 acres and is reported at 588,000 barrels of crude a day. It is the largest employer in the city.
Baytown Refinery · ATEX and IECEx
ATEX and IECEx Smartphone in Baytown Refinery
Baytown lies on the Houston Ship Channel about 26 miles east of Houston. ExxonMobil's complex there, founded in 1919, combines a refinery with chemical and ethylene units, and Chevron Phillips and Covestro also run large plants, so classified areas span process units, crackers and storage. This page explains what to look for in an ATEX and IECEx smartphone for Baytown, Texas (ExxonMobil Baytown complex), 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 topicATEX and IECEx
DeviceSmartphone
RouteSpecification
WhereBaytown Refinery
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Baytown, Texas (ExxonMobil Baytown complex): 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. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · ATEX and IECEx
Checklist: ATEX and IECEx smartphone for Baytown, Texas (ExxonMobil Baytown complex)
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Marking | II 2 G Ex ib IIC T4 on the rating plate | Design target; not yet marked |
| EU-type examination certificate | Notified body number and certificate ID | In progress with TÜV; not issued |
| IECEx certificate of conformity | Number listed on the IECEx online register | In progress; not issued |
| Where it applies | Baytown, Texas (ExxonMobil Baytown complex): Refinery process units, Ethylene cracking units, Chemical plant units | Classified by the site operator |
Product · Baytown Refinery
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 Baytown Refinery. 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 · Baytown, Texas (ExxonMobil Baytown complex)
Working in Baytown, Texas (ExxonMobil Baytown complex): 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
- ExxonMobil
- Chevron Phillips Chemical
- Covestro
Classified areas to expect
- Refinery process units
- Ethylene cracking units
- Chemical plant units
- Ship Channel storage and docks
Local conditions · Baytown, Texas (ExxonMobil Baytown complex)
Site conditions at Baytown, Texas (ExxonMobil Baytown complex): what wears and what limits equipment
Crackers
The site has three ethylene crackers with combined capacity of 3.6 million tons a year, the newest commissioned in 2018.
Field notes · Baytown, Texas (ExxonMobil Baytown complex)
More about Baytown, Texas (ExxonMobil Baytown complex) that matters for portable equipment
Baytown, Texas (ExxonMobil Baytown complex): industry on the ground
ExxonMobil's Baytown complex covers about 3,400 acres on the Houston Ship Channel, around 25 miles east of Houston, and includes a refinery, chemical plant, olefins plant, plastics plant and a global technology center.
Baytown, Texas (ExxonMobil Baytown complex): projects and investment
An advanced recycling facility at Baytown has operated since December 2022, with capacity to process 80 million pounds of plastic waste a year.
Baytown, Texas (ExxonMobil Baytown complex): industry on the ground
The Baytown Refinery opened in 1919, has a capacity of 588,000 barrels per day, and is the city's largest employer and the fifth-largest refinery in the United States.
Baytown, Texas (ExxonMobil Baytown complex): infrastructure
The refinery has a Nelson Complexity Index of 13.7, indicating a highly complex configuration with many conversion units.
The term · ATEX and IECEx
What “ATEX and IECEx” means for a smartphone
ATEX is the European legal framework for equipment used in explosive atmospheres (Directive 2014/34/EU). IECEx is the international certification scheme built on the IEC 60079 standards. Buyers outside Europe often ask for both: an IECEx certificate is the technical evidence most national regimes build on, while ATEX is the legal route into the European market.
For the IS-04Z1 both routes are in progress with TÜV in Germany and neither certificate has been issued. The marking target is II 2 G Ex ib IIC T4: equipment Group II (surface industry), Category 2 (Zone 1 gas), protection concept ib (intrinsic safety), gas group IIC and temperature class T4.
In Baytown, Texas (ExxonMobil Baytown complex). A reviewer at the Baytown complex would usually expect NEC-based Class and Division or Zone evidence, yet ExxonMobil, Chevron Phillips Chemical and Covestro also work with international EPCs carrying ATEX or IECEx paperwork. A dual route is designed to help those contractors. Both remain in progress for SAMS and none is issued.
The route · specification
Specifying an ATEX and IECEx smartphone for Baytown Refinery
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 · Baytown Refinery
Frequently asked questions
Can we buy an ATEX and IECEx smartphone in Baytown Refinery today?
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.
What does an ATEX and IECEx smartphone in Baytown Refinery 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.
Is the IS-04Z1 ATEX and IECEx certified?
Not yet. Both routes are in progress with TÜV in Germany and no certificate has been issued. Any listing that says otherwise is wrong.
Which areas at Baytown, Texas (ExxonMobil Baytown complex) would use it?
Likely candidates are refinery process units, ethylene cracking units, chemical plant units, ship channel storage and docks. 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.
How are large projects at Baytown affecting contractor demand?
Expansions such as the 2023 chemical lines supported 3,500 construction jobs, so peak construction periods bring many contractors. Confirm schedules and induction requirements with the operator.
What classified areas does Baytown have?
Process units, olefins and polymer plants, tank farms and loading areas have gas and dust hazards, with hydrogen areas needing IIC. Request the site classification drawings for exact zones.
What makes Baytown different from a single-refinery site?
ExxonMobil's complex, founded in 1919, combines a refinery with chemical and ethylene units, and Chevron Phillips and Covestro also run large plants nearby. Areas therefore range from process units to crackers and storage. Confirm which plant and area a task is in, and what the operator requires.
Related guides
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Enquiry · Baytown, Texas (ExxonMobil Baytown complex)
Ask about the IS-04Z1 for Baytown, Texas (ExxonMobil Baytown complex), 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.
Enquiry · Baytown, Texas (ExxonMobil Baytown complex)
Launching Q4 2026
Planning for Baytown Refinery?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.