Tengizchevroil: geography and layout
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 · explosion proof
Explosion-Proof Mobile Phone for Tengizchevroil
Tengizchevroil is a joint venture developing the Tengiz and Korolevskoye fields in the Atyrau region of Kazakhstan. 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. If you are specifying an explosion proof mobile phone for Tengizchevroil, this page covers the markings, the approvals and the current certification status of the IS-04Z1.
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 topicexplosion proof
DeviceMobile Phone
RouteSpecification
WhereTengizchevroil
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.
At a glance · explosion proof
Checklist: explosion proof mobile phone for Tengizchevroil
| 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 | Tengizchevroil: Crude oil production plants (including the Third-Generation Plant), Wellsites and gathering facilities | Classified by the site operator |
Product · Kazakhstan
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 Kazakhstan. 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 organisation · Tengizchevroil
Tengizchevroil LLP (TCO) and the IS-04Z1
Where it operates and the kinds of classified area a handset would meet there.
Sites and areas
- Tengiz field, Atyrau region
- Korolevskoye field
Classified areas
- Crude oil production plants (including the Third-Generation Plant)
- Wellsites and gathering facilities
Supplier approval · Tengizchevroil
How suppliers reach Tengizchevroil
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.
Field notes · Tengizchevroil
More about Tengizchevroil that matters for portable equipment
Tengizchevroil: geography and layout
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.
Tengizchevroil: who works there
Chevron holds 50%, ExxonMobil 25% and KazMunayGas 20%, with a minority partner holding the remainder, so contractor standards are shaped by international majors as well as the national company.
Tengizchevroil: projects and investment
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.
The term · explosion proof
What “explosion proof” means for a smartphone
“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 Tengizchevroil. In a large crude oil production plant, explosion-proof is a casual label for different concepts. Flameproof Ex d protects fixed electrical enclosures, while intrinsic safety limits electrical energy and suits handheld devices. For operators moving through the Tengiz plants and wellsites with a phone, intrinsic safety is the relevant concept, and the IS-04Z1 is designed around it.
The route · specification
Specifying an explosion proof mobile phone for Tengizchevroil
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 · Tengizchevroil
Frequently asked questions
Can Tengizchevroil buy the IS-04Z1 today?
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.
What does an explosion proof mobile phone for Tengizchevroil cost?
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.
Is the IS-04Z1 explosion proof or intrinsically safe?
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.
How does Tengizchevroil approve suppliers?
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.
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.
Who approves handheld equipment for work at the Tengiz field?
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.
Can a supplier sell directly to Tengizchevroil or must it go through a contractor?
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.
What does extreme cold mean for a handheld at Tengiz?
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.
Related guides
Keep exploring
More on Tengizchevroil, and on other places in Kazakhstan.
ATEX and IECEx Mobile Phone Supplier for TengizchevroilSame place, different guide
Intrinsically Safe Mobile Phone Supplier for TengizchevroilSame place, different guide
IECEx Mobile Phone for TengizchevroilSame place, different guide
Explosion-Proof Mobile Phone Supplier for TengizchevroilSame place, different guide
ATEX and IECEx Mobile Phone Supplier for KazMunayGasElsewhere in Kazakhstan
Kazakhstan market guideCertification route and regulators
All guides for KazakhstanEvery route we cover
Certification statusWhat is in progress
Enquiry · Tengizchevroil
Ask about the IS-04Z1 for Tengizchevroil, Kazakhstan
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Enquiry · Tengizchevroil
Launching Q4 2026
Planning for Tengizchevroil?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.