Mixed industry
Wikipedia lists Reliance, ONGC, Shell, NTPC, L&T and KRIBHCO among the major Hazira operators, with L&T's shipyard and heavy engineering complex alongside.
Hazira is an industrial and port suburb of Surat in Gujarat, on the Tapti River about 8 km from the Arabian Sea. Surat has a tropical savanna climate moderated by the sea, with April and May the hottest months at an average maximum of about 37 degrees Celsius. This page explains what to look for in an explosion proof mobile phone for Hazira, Surat, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Hazira, Surat: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
| 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 | Hazira, Surat: LNG regasification, Gas processing, Petrochemical plants | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Hazira India. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Wikipedia lists Reliance, ONGC, Shell, NTPC, L&T and KRIBHCO among the major Hazira operators, with L&T's shipyard and heavy engineering complex alongside.
The area is generally hot and humid with monsoon rain, so sealed devices suit outdoor work.
The Hazira LNG terminal in Surat district was designed for 5 million tonnes a year of regasification, expandable to 10 million tonnes depending on demand.
The monsoon starts in late June and brings about 1,200 millimetres of rain by the end of September, with maxima around 32 degrees during those months.
Industrial names at Hazira include Essar, Kribhco, Shell, Larsen and Toubro, NTPC, ONGC, GAIL, Gujarat State Petroleum Corporation, UltraTech Cement and Reliance's Hazira Manufacturing Division.
The L and T shipyard at Hazira began building small ships and naval craft in 2010 and was renamed the A M Naik Heavy Engineering Complex in 2021.
“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 Hazira, Surat. At Hazira the phrase explosion-proof covers both gas plant equipment and dust areas. Flameproof Ex d suits fixed gear in LNG regasification and gas processing, while a carried handheld depends on intrinsic safety. Dust areas from heavy engineering and powder handling need their own protection approach.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
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.
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.
Likely candidates are lng regasification, gas processing, petrochemical plants, marine terminals. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
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.
Hazira is 22 kilometres from Surat and the drive takes about 30 to 35 minutes. Most visitors fly into Surat, and heavy plant traffic and monsoon rain can slow the road.
Hazira combines an LNG terminal, gas and power plants, a manufacturing division and a shipyard, so it has gas-hazard zones, hot-work areas and mixed-use industrial zones. Always get the area classification and equipment rules from the specific operator.
The terminal operator does, through its permit and area classification system, with PESO as national regulator. Rules usually cover approved equipment, permits and charging. Ask the operator's safety team what evidence they need from a supplier before a new handheld may enter.
Other guides for Hazira India, other places in India, and the pages behind them.
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.