Refinery
HPCL describes Visakh as India's first east-coast refinery (1957), with a single point mooring for crude carriers, and reports a record 16.04 million tonne throughput in 2025-26 after a residue upgradation facility was commissioned.
Visakhapatnam India · intrinsically safe
Intrinsically Safe Mobile Phone in Visakhapatnam India
Visakhapatnam is a major east-coast port city in Andhra Pradesh. HPCL's Visakh Refinery, rated at 15 million tonnes a year after its modernisation, and an underground strategic crude reserve operated by ISPRL create Zone 1 areas in process units, tank farms and storage caverns. This page explains what to look for in an intrinsically safe mobile phone for Visakhapatnam (Vizag), Andhra Pradesh, 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
WhereVisakhapatnam India
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Visakhapatnam (Vizag), Andhra Pradesh: 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. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for Visakhapatnam (Vizag), Andhra Pradesh
| 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 | Visakhapatnam (Vizag), Andhra Pradesh: Refinery process units, Crude and product tank farms, Underground strategic crude storage | Classified by the site operator |
Product · Visakhapatnam India
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 Visakhapatnam India. 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 · Visakhapatnam (Vizag), Andhra Pradesh
Working in Visakhapatnam (Vizag), Andhra Pradesh: 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
- Hindustan Petroleum Corporation Limited (Visakh Refinery)
- Indian Strategic Petroleum Reserves Limited
Classified areas to expect
- Refinery process units
- Crude and product tank farms
- Underground strategic crude storage
- Port petroleum berths and single point mooring
Local conditions · Visakhapatnam (Vizag), Andhra Pradesh
Conditions in Visakhapatnam (Vizag), Andhra Pradesh that affect handheld equipment
Strategic reserve
ISPRL's Visakhapatnam facility, with 1.33 million tonnes of crude storage in rock caverns and tanks, was built under India's phase-I strategic reserve programme.
Field notes · Visakhapatnam (Vizag), Andhra Pradesh
More about Visakhapatnam (Vizag), Andhra Pradesh that matters for portable equipment
Visakhapatnam (Vizag), Andhra Pradesh: who works there
The city is known as India's shipbuilding capital, with Hindustan Shipyard and the Naval Dockyard on the harbour, and it is the headquarters of the Indian Navy's Eastern Naval Command.
Visakhapatnam (Vizag), Andhra Pradesh: people and language
Institutions in the city include the Indian Institute of Petroleum and Energy and the Indian Maritime University, which feed a local pool of petroleum and marine engineers for plant and shipyard work.
Visakhapatnam (Vizag), Andhra Pradesh: logistics and access
Vizag is described as India's largest all-weather port on the east coast, handling roughly 65 to 70 million tonnes of cargo a year, with dry bulk carriers making up nearly two thirds of ship calls.
Visakhapatnam (Vizag), Andhra Pradesh: projects and investment
The Visakh refinery set a record crude throughput of 16.04 million tonnes in 2025-26, and a Residual Upgradation Facility was commissioned in the same year, adding new process-unit areas to be classified.
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 Visakhapatnam (Vizag), Andhra Pradesh. Turnarounds and daily rounds at a refinery send inspectors through process units and tank farms with checklists, photographs and permits. A handheld intended for intrinsically safe use could keep these in one device. The same logic applies to staff monitoring storage caverns and moving along petroleum berths.
The route · specification
Specifying an intrinsically safe mobile phone for Visakhapatnam India
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 · Visakhapatnam India
Frequently asked questions
Can we buy an intrinsically safe mobile phone in Visakhapatnam India 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 intrinsically safe mobile phone in Visakhapatnam India 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 Visakhapatnam (Vizag), Andhra Pradesh would use it?
Likely candidates are refinery process units, crude and product tank farms, underground strategic crude storage, port petroleum berths and single point mooring. 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 Visakhapatnam a practical base for refinery turnaround and shutdown work?
It is a sensible base because the refinery, port, rail zone headquarters and a large engineering workforce are all in one metropolitan area. Shutdown timing is set by the operator, so ask the plant for its turnaround plan and contractor induction rules.
Can shipyard work in Vizag involve classified areas as well as refinery work?
Yes. Tank cleaning, fuel and cargo tank work, paint stores and hot-work areas on ships and in dry docks can all be treated as hazardous locations. Shipyards typically issue gas-free and hot-work permits, so check how portable devices are controlled.
Does the coastal climate at Visakhapatnam change the battery or housing choice?
Heat, humidity and salt air are the practical concerns, along with monsoon rain. Check the rated operating temperature range and the sealing of ports and charging contacts. Charging should happen in a safe area. Confirm any site-specific rules with the operator.
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Enquiry · Visakhapatnam (Vizag), Andhra Pradesh
Ask about the IS-04Z1 for Visakhapatnam (Vizag), Andhra Pradesh, India
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 · Visakhapatnam (Vizag), Andhra Pradesh
Launching Q4 2026
Planning for Visakhapatnam India?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.