Urban setting
The refinery sits in the dense Rio metropolitan area with road links to the city and airport.
Duque de Caxias · Ex-proof
Ex-Proof Mobile Phone in Duque de Caxias
The Duque de Caxias refinery (Reduc) has operated since 1961, ranks among Brazil's largest by crude capacity, and supplies about 80 percent of the country's lubricants while leading natural gas processing. It hosts the Petrobras Duque de Caxias refinery (Reduc), which started up in 1961, so refining and gas-processing units create Zone 1 areas. This page explains what to look for in an Ex-proof mobile phone for Duque de Caxias, and where the IS-04Z1 stands against that list today.
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 topicEx-proof
DeviceMobile Phone
RouteSpecification
WhereDuque de Caxias
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Duque de Caxias: 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 · Ex-proof
Checklist: Ex-proof mobile phone for Duque de Caxias
| 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 | Duque de Caxias: Refinery process units, Tank farms and pipelines, Loading and dispatch areas | Classified by the site operator |
Product · Duque de Caxias
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 Duque de Caxias. 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 site · Duque de Caxias
Working in Duque de Caxias: operators and classified areas
The companies on site and the hazardous-area types a handset is likely to meet there.
Operators and companies on site
- Petrobras (Reduc refinery)
Classified areas to expect
- Refinery process units
- Tank farms and pipelines
- Loading and dispatch areas
- Biofuel (SAF and renewable diesel) processing
Local conditions · Duque de Caxias
Site conditions at Duque de Caxias: what wears and what limits equipment
Large multi-product site
Reduc makes more than 40 products and has a stated capacity of 239,000 barrels a day.
Field notes · Duque de Caxias
More about Duque de Caxias that matters for portable equipment
Duque de Caxias: industry on the ground
Reduc sells about 55 different products, the most of any Petrobras refinery, from diesel, jet fuel and asphalt to LPG, paraffins, lubricants, coke and sulphur, so many hazardous product streams are handled on site.
Duque de Caxias: infrastructure
Petrobras has installed a reverse osmosis system supplied by SETA to treat and reuse refinery effluents, an example of the water-management projects that run alongside normal operations.
Duque de Caxias: background
Reduc began operating in 1961 near Rio de Janeiro, one of the early refineries built after Petrobras was created in 1953 with a legal monopoly.
Duque de Caxias: projects and investment
The Reduc delayed coking unit started operating in July 2008 after an investment of about one billion dollars, converting heavy feedstock into diesel and naphtha and producing petroleum coke.
The term · Ex-proof
What “Ex-proof” means for a smartphone
“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 Duque de Caxias. The sheet describes Zone 1 areas in refining and gas-processing units. A marking check at Reduc would look at zone suitability first, then gas group and temperature class for each unit's product, including the newer biofuel processing. The IS-04Z1 target marking II 2 G Ex ib IIC T4 is not yet certified.
The route · specification
Specifying an Ex-proof mobile phone for Duque de Caxias
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 · Duque de Caxias
Frequently asked questions
Can we buy an Ex-proof mobile phone in Duque de Caxias today?
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
What does an Ex-proof mobile phone in Duque de Caxias cost?
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.
What Ex marking will the IS-04Z1 carry?
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.
Which areas at Duque de Caxias would use it?
Likely candidates are refinery process units, tank farms and pipelines, loading and dispatch areas, biofuel (saf and renewable diesel) processing. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
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.
Is Duque de Caxias refinery work usually tied to shutdown cycles?
Large refineries run planned turnarounds, and Reduc is in Petrobras' revamp programme. Exact dates are set by the operator, so confirm shutdown windows, contractor induction rules and permit-to-work practice before scheduling visits with portable equipment.
Which Reduc areas typically need Ex-rated mobile equipment?
Process units, lubricant and gas processing areas, tank farms and loading points commonly contain classified zones. Each area's gas group and temperature class is defined in the refinery's classification drawings, so ask the safety department for them before specifying a handheld device.
Does the new biofuel processing change classification?
Possibly. SAF and renewable diesel processing is a different product stream from the original refinery units, so its area classification may differ. Do not assume one marking fits all. Ask Petrobras for the classification of the exact unit before choosing a device.
Related guides
Keep exploring
Related guides for Duque de Caxias and for Brazil.
Rugged Mobile Phone in Duque de CaxiasSame place, different guide
Explosion-Proof Mobile Phone Distributor in Duque de CaxiasSame place, different guide
Hazardous Area Mobile Phone in Duque de CaxiasSame place, different guide
Industrial Mobile Phone Distributor in Duque de CaxiasSame place, different guide
IECEx Mobile Phone Distributor in Duque de CaxiasSame place, different guide
Intrinsically Safe Mobile Phone in Duque de CaxiasSame place, different guide
ATEX and IECEx Mobile Phone Distributor in Itaborai PetrochemicalElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in MacaéElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in Santos BasinElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in Brazil RefineriesElsewhere in Brazil
Brazil market guideCertification route and regulators
All guides for BrazilEvery route we cover
Certification statusWhat is in progress
Enquiry · Duque de Caxias
Ask about the IS-04Z1 for Duque de Caxias, Brazil
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 · Duque de Caxias
Launching Q4 2026
Planning for Duque de Caxias?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.