Climate
Tropical savanna climate with 24.7 to 30.6 C annual temperature range and monsoon rainfall; the coast is exposed to occasional cyclones.
Visakhapatnam India · Ex-proof
Ex-Proof Mobile Phone in Visakhapatnam India
The city is the zonal headquarters of the South Coast Railway Zone, and a transit corridor is proposed to link the planned Bhogapuram airport with city business districts and the Atchutapuram industrial clusters. 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 Ex-proof 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 topicEx-proof
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. 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 Visakhapatnam (Vizag), Andhra Pradesh
| 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 | 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
Visakhapatnam (Vizag), Andhra Pradesh: where the IS-04Z1 would work
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
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
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.
Field notes · Visakhapatnam (Vizag), Andhra Pradesh
More about Visakhapatnam (Vizag), Andhra Pradesh that matters for portable equipment
Visakhapatnam (Vizag), Andhra Pradesh: industry on the ground
HPCL's Visakh refinery was the first refinery on India's east coast, commissioned in 1957, and now has a nameplate capacity of 15 million tonnes a year, so liquid-hydrocarbon hazardous areas are extensive and long established.
Visakhapatnam (Vizag), Andhra Pradesh: climate and equipment wear
Visakhapatnam has a tropical savanna climate with mean temperatures from about 25 to 31 degrees Celsius, a record high of 42 degrees, and about 1,119 mm of rain a year from south-west and north-east monsoons.
Visakhapatnam (Vizag), Andhra Pradesh: geography and layout
The port serves the Visakhapatnam Steel Plant, quoted at about 7.3 million tonnes a year, and the industrial hinterland of Andhra Pradesh, Telangana, Odisha and Chhattisgarh, which brings coal, ore and dust hazards alongside oil and gas.
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.
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 Visakhapatnam (Vizag), Andhra Pradesh. Checking a marking at Visakh would mean reading the zone assigned to a process unit, tank farm or berth, then matching gas group and temperature class. Crude and product vapours are typically in the IIA or IIB groups, so IIC is conservative. The target marking is II 2 G Ex ib IIC T4, unapproved.
The route · specification
Specifying an Ex-proof 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 Ex-proof mobile phone in Visakhapatnam India 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 Ex-proof 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 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 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.