Large multi-product site
Reduc makes more than 40 products and has a stated capacity of 239,000 barrels a day.
Duque de Caxias · intrinsically safe
Intrinsically Safe Mobile Phone in Duque de Caxias
Duque de Caxias is an industrial municipality on Guanabara Bay about 17 km from downtown Rio de Janeiro. 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 intrinsically safe 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 topicintrinsically safe
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.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for Duque de Caxias
| 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 | 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
Investment programme
Petrobras plans US$4.6 billion for Reduc in 2026-2030, with maintenance shutdowns of the coking and hydrotreating units scheduled in 2026.
Field notes · Duque de Caxias
More about Duque de Caxias that matters for portable equipment
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.
Duque de Caxias: infrastructure
A natural-gas power unit of 63 MW has served the refinery since 1976, so the site generates part of its own electricity as well as processing fuels and lubricants.
Duque de Caxias: industry on the ground
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.
Duque de Caxias: geography and layout
The Duque de Caxias refinery complex covers about 13 square kilometres beside Rodovia Washington Luis in the Campos Eliseos district, making it a very large industrial site inside the Rio de Janeiro metropolitan 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 Duque de Caxias. Maintenance shutdowns of the coking and hydrotreating units are scheduled in 2026, and shutdown walkdowns need handhelds that can safely enter process units. Intrinsic safety suits those inspections. The IS-04Z1 is designed for such use and is awaiting certification.
The route · specification
Specifying an intrinsically safe 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 intrinsically safe mobile phone in Duque de Caxias 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 mobile phone in Duque de Caxias 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.
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.
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
More on Duque de Caxias, and on other places in Brazil.
Explosion-Proof Mobile Phone in Duque de CaxiasSame place, different guide
IECEx Mobile Phone Distributor in Duque de CaxiasSame place, different guide
Ex-Proof Mobile Phone Distributor in Duque de CaxiasSame place, different guide
ATEX and IECEx Mobile Phone in Duque de CaxiasSame place, different guide
Hazardous Area Mobile Phone in Duque de CaxiasSame place, different guide
Rugged Mobile Phone Distributor in Duque de CaxiasSame place, different guide
ATEX and IECEx Mobile Phone Distributor in Angra dos ReisElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in Campos BasinElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in Rio de JaneiroElsewhere in Brazil
ATEX and IECEx Mobile Phone Distributor in Santos Port OperationsElsewhere 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
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Enquiry · Duque de Caxias
Launching Q4 2026
Planning for Duque de Caxias?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.