Coastal climate
The site is coastal, hot and humid, so corrosion and dust are routine concerns for portable electronics.
Sitra is an island about 5 km south of Manama, and its northern section has been turned into an industrial area. It hosts the Bapco Sitra refinery, whose $7 billion modernisation was inaugurated in December 2024, and the GARMCO aluminium rolling mill, so refinery and heavy-industry hazardous areas are present. If you are specifying an Ex-proof mobile phone for Sitra, Bahrain, this page covers the markings, the approvals and the current certification status of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Sitra, Bahrain: 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.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ex marking | Group, category, protection concept, gas group, temperature class | II 2 G Ex ib IIC T4 (target) |
| Gas group | IIA, IIB or IIC matched to the area drawing | IIC (target) |
| Temperature class | T-class below the ignition temperature of the gas | T4, 135 °C (target) |
| Where it applies | Sitra, Bahrain: Crude and product storage, Hydrogen and hydrocracking units, Sulphur recovery units | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Sitra. 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 site is coastal, hot and humid, so corrosion and dust are routine concerns for portable electronics.
The modernised refinery is ramping up towards about 405,000 barrels a day, and contractors were still completing final units into late 2025 and early 2026.
Bapco oil storage reservoirs are in the south of the island, and Sitra is the terminus of a 42 km pipeline linking it to Dhahran in Saudi Arabia.
The Bahrain Extrusion Company has operated an aluminium extrusion plant in the Sitra industrial zone since March 1977, so metal-working sits alongside oil facilities.
In 2018 Bapco commissioned a new pipeline to replace pipeline infrastructure more than 70 years old between Bahrain and Saudi Arabia.
East Sitra City, a reclamation project off the eastern coast, increased the island's size by about 50 percent and hosts new residential development.
“Ex-proof” is shorthand for equipment carrying an explosion-protection marking (the Ex mark) that matches the area it enters. The marking states the protection concept, gas or dust group and temperature class, and it must be backed by a certificate issued by a recognised body, so a phone described as Ex-proof should come with a certificate number you can check.
The IS-04Z1 is designed to carry the marking II 2 G Ex ib IIC T4. That is a target: certification is in progress, no certificate has been issued, and SAMS will publish the certificate numbers when they exist.
In Sitra, Bahrain. Hydrogen and hydrocracking units are the reason a marking check at Sitra deserves care. Reviewers would compare the gas group and temperature class on the label with the operator's classification, and hydrogen service points toward the most demanding group. The IS-04Z1 target marking of II 2 G Ex ib IIC T4 is not yet certified.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Not yet. The IS-04Z1 is pre-launch and its certification is still in progress ahead of a Q4 2026 launch. No unit goes into a classified area before the certificate covering it exists. The datasheet, the certification schedule and safe-area evaluation units are available now.
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.
The marking target is II 2 G Ex ib IIC T4. It becomes a marking only when the certificate is issued; until then it is a design target.
Likely candidates are refinery process units, crude and product storage, hydrogen and hydrocracking units, sulphur recovery units. 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.
Construction of a refinery upgrade began in March 2019 and included a new resid hydrocracking unit planned for operation by 2023. Confirm the current project and commissioning status with Bapco.
Mainly the Bapco refinery and storage reservoirs, with process units, tank farms and loading facilities, plus the port. The extrusion and other light industry may have limited zones. Ask each operator for its classification drawing.
It can, because hydrogen units sit in the most demanding gas group, so the marking must cover that group. Sitra has hydrogen and hydrocracking units. Ask the operator for the classification of each unit and compare it with the device label rather than assuming one marking fits the whole refinery.
More on Sitra, and on other places in Bahrain.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.