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.
CNOOC · explosion proof
Explosion-Proof Smartphone for CNOOC
CNOOC is a Beijing-headquartered state-owned company, established in 1982, focused on offshore oil and gas. 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. If you are specifying an explosion proof 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 topicexplosion proof
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. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
At a glance · explosion proof
Checklist: explosion proof smartphone for CNOOC
| 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 | 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
China National Offshore Oil Corporation (CNOOC): operations and where an Ex phone fits
A short profile of its operations and the kinds of classified area that matter for portable equipment.
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
Becoming an approved supplier to 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: who works there
CNOOC is the third-largest national oil company in China, owned by the state through SASAC, with CNOOC Limited and China Oilfield Services as its listed subsidiaries.
CNOOC: projects and investment
CNOOC Gas and Power is described as China's largest LNG importer and terminal operator, so LNG receiving terminals form a major class of its cryogenic and gas hazardous areas.
CNOOC: background
CNOOC was incorporated in 1982 under State Council regulations for cooperation with foreign enterprises, and was authorised to take overall responsibility for offshore oil and gas in China.
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 CNOOC. On offshore platforms and FPSOs in the Bohai Sea and South China Sea, 'explosion-proof' loosely covers several concepts. Flameproof Ex d protects fixed equipment, while intrinsic safety limits the energy of a handheld. A phone on a platform deck is portable, so the IS-04Z1 is designed around intrinsic safety.
The route · specification
Specifying an explosion proof 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?
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.
What does an explosion proof 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.
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 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
Other guides for CNOOC, other places in China, and the pages behind them.
ATEX and IECEx Mobile Phone for CNOOCSame place, different guide
Intrinsically Safe Mobile Phone for CNOOCSame place, different guide
IECEx Mobile Phone for CNOOCSame place, different guide
Explosion-Proof 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
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 · CNOOC
Launching Q4 2026
Planning for CNOOC?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.