Tengizchevroil completed the Future Growth Project-Wellhead Pressure Management Project in 2025, designed to add 260,000 barrels a day at full capacity and take total Tengiz output to roughly one million barrels of oil equivalent a day. First oil from its Future Growth Project Third-Generation Plant came in January 2025. This page explains what to look for in an IECEx mobile phone for Tengizchevroil, 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 Tengizchevroil: 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. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Certificate of conformity | Number checkable on the IECEx online register | In progress; not issued |
| Standards edition | The IEC 60079 edition the certificate cites | Stated on the certificate when issued |
| Schedule of conditions | Limits of use, batteries and accessories | Published with the certificate |
| Where it applies | Tengizchevroil: Crude oil production plants (including the Third-Generation Plant), Wellsites and gathering facilities | Classified by the site operator |
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Kazakhstan. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
A short profile of its operations and the kinds of classified area that matter for portable equipment.
TCO's procurement favours qualified Kazakhstani contractors (over 1,250 contracts awarded to local firms on the Future Growth Project); confirm current supplier requirements with TCO. The Ex certificate and an organisation's own vendor or engineering approval are two separate timelines; SAMS is working towards both and holds neither today.
Because the venture is operated for international partners, supplier access normally runs through its own approved-contractor and HSE induction process rather than a general national register; confirm current rules with its procurement team.
The company is reported to employ about 4,000 people, around 95% of them residents of Kazakhstan, which makes local-language training and instructions important for any new equipment.
Chevron describes Tengiz as the world's deepest producing supergiant oil field, with the top of the reservoir roughly 13,000 feet, or about 4,000 metres, below ground.
Tengizchevroil holds the right to develop the Tengiz and Korolevskoye oil fields, which lie in the north-eastern part of the Caspian Sea basin in western Kazakhstan.
IECEx is the international scheme for certifying equipment used in explosive atmospheres. A certificate of conformity is issued by an accredited certification body against a specific edition of the IEC 60079 standards and carries a schedule of conditions of safe use. It is not a legal requirement in most countries on its own, but many national schemes accept it as the technical basis.
The IECEx certificate for the IS-04Z1 is in progress and has not been issued. The marking target is Ex ib IIC T4, the intrinsic safety concept for Zone 1 gas with the hardest gas group (IIC) and a 135 °C temperature class.
In Tengizchevroil. The Tengiz joint venture has international shareholders and contractor teams, so its reviewers are used to IECEx documents. They look for a certificate of conformity and its schedule of conditions. The IS-04Z1 is targeting IECEx, which is in progress, so Tengizchevroil staff should treat it as a planned route and not a held approval.
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.
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
No. The IECEx certificate is in progress and has not been issued. SAMS will publish the number when it exists.
TCO's procurement favours qualified Kazakhstani contractors (over 1,250 contracts awarded to local firms on the Future Growth Project); confirm current supplier requirements with TCO.
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.
Equipment approval is typically managed by the operator's own HSE and engineering groups, together with its contractor management process. There is no public list, so a supplier should ask Tengizchevroil's procurement team which certifications and area classifications are required before any site trial.
Both routes exist in large oil ventures. Direct supply normally requires registration with the company's procurement system, while many devices reach site through engineering contractors who must meet the same standards. Ask the procurement team which route applies to your product category.
Low temperatures cut battery capacity and can make screens sluggish. IP68 helps with dust and snow but is not an explosion rating. Check the datasheet operating range, test at your coldest conditions, keep spare batteries warm and charge only in safe areas. Site HSE rules will set how devices are carried.
Other guides for Tengizchevroil, other places in Kazakhstan, 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.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.
