CNOOC: industry on the ground
The company works in six sectors: oil and gas exploration and development, technical services, logistics, chemicals and fertiliser, natural gas and power generation, and financial services.
CNOOC · intrinsically safe
Intrinsically Safe Smartphone for CNOOC
CNOOC is a Beijing-headquartered state-owned company, established in 1982, focused on offshore oil and gas. Its listed arm, CNOOC Limited, reported record net production of 2.13 million barrels of oil equivalent per day in 2025, mainly from Bohai and the South China Sea. If you are specifying an intrinsically safe smartphone for CNOOC, 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 topicintrinsically safe
DeviceSmartphone
RouteSpecification
WhereCNOOC
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for CNOOC: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Status: pre-launch. IECEx, ATEX, UKEX and NEC 500 certification is in progress and no certificate has been issued; launch is planned for Q4 2026. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe smartphone for CNOOC
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | CNOOC: Offshore production platforms and FPSOs, Onshore terminals, Refinery and petrochemical plants | Classified by the site operator |
Product · China
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 China. 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 · CNOOC
Working with China National Offshore Oil Corporation (CNOOC): sites and classified areas
The main sites and the hazardous-area types a portable device is likely to meet at this organisation.
Sites and areas
- Bohai Sea
- South China Sea
- Huizhou refinery and Daya Bay petrochemical zone
Classified areas
- Offshore production platforms and FPSOs
- Onshore terminals
- Refinery and petrochemical plants
Supplier approval · CNOOC
Supplier registration at CNOOC
Supplier registration and equipment approval are run by the organisation itself; confirm current requirements with its procurement and HSE teams. 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 · CNOOC
More about CNOOC that matters for portable equipment
CNOOC: geography and layout
The group's headquarters are in Beijing, in a building that opened in 2006, while production is offshore, notably in Bohai Bay and the South China Sea, far from head office.
CNOOC: who works there
CNOOC holds 7.34% of the deepwater Buzios field and 9.65% of the Mero development in Brazil, so some of its staff and contractors also work under overseas operators' rules.
CNOOC: industry on the ground
A 2019 national science award recognised CNOOC's exploration of a deep, large-scale condensate gas field in the Bohai Bay Basin, which is a major offshore production area.
The term · intrinsically safe
What “intrinsically safe” means for a smartphone
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In CNOOC. Platform rounds, terminal inspections and plant checks at Huizhou involve photographing equipment, reading tags and recording faults in classified areas. A handheld designed as intrinsically safe could handle those tasks on one device. The IS-04Z1 is designed for this use, though certification is still in progress.
The route · specification
Specifying an intrinsically safe smartphone for CNOOC
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 · CNOOC
Frequently asked questions
Can CNOOC 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 intrinsically safe smartphone for CNOOC cost?
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
What does ‘intrinsically safe’ mean for the IS-04Z1?
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
How does CNOOC approve suppliers?
Supplier registration and equipment approval are run by the organisation itself; confirm current requirements with its procurement and HSE teams.
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.
Which certification do Chinese offshore and onshore sites expect for Ex phones?
China operates its own explosion-protection certification scheme, commonly marked Ex with a national certificate, in addition to international schemes. CNOOC and its contractors normally ask for the certificate accepted in China, so confirm the required marks and testing bodies before offering devices.
Are CNOOC offshore platforms different from its LNG terminals for equipment selection?
Yes. Offshore platforms combine confined spaces, salt air and vibration with gas and oil areas, while LNG terminals involve cryogenic liquids, large storage tanks and jetties. Ask the facility for area classification drawings, and check device ratings for each environment.
Is IECEx enough for equipment going onto CNOOC platforms?
Not by itself. CNOOC runs its own supplier registration and equipment approval, and national requirements may apply. IECEx documents help comparison but do not replace them. The IS-04Z1 has no certificate yet. Confirm current requirements with CNOOC's procurement and HSE teams before planning any evaluation.
Related guides
Keep exploring
Related guides for CNOOC and for China.
ATEX and IECEx Mobile Phone Supplier for CNOOCSame place, different guide
Explosion-Proof Mobile Phone Supplier for CNOOCSame place, different guide
IECEx Mobile Phone Supplier for CNOOCSame place, different guide
Intrinsically Safe Mobile Phone for CNOOCSame place, different guide
ATEX and IECEx Mobile Phone Supplier for SinopecElsewhere in China
ATEX and IECEx Mobile Phone Supplier for CNPCElsewhere in China
China market guideCertification route and regulators
All guides for ChinaEvery route we cover
Certification statusWhat is in progress
Enquiry · CNOOC
Ask about the IS-04Z1 for CNOOC, China
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Enquiry · CNOOC
Launching Q4 2026
Planning for CNOOC?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.