Capacity figures
Wikipedia quotes 1.24 million barrels a day, while Reliance's current site quotes 1.4 million; the operator's figure is used here.
Jamnagar is known as the Brass City, with over 5,000 large and 10,000 small brass workshops, so local engineering and fabrication skills are widely available. Process units, tank farms and marine facilities create extensive Zone 1 and Zone 2 areas. This page explains what to look for in a rugged mobile phone for Jamnagar, Gujarat, 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 Jamnagar, Gujarat: 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.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ingress protection | IP65 to IP68 sealing | IP68 design |
| Drop and shock | A stated drop height onto concrete | Specification on request |
| Explosion protection | A separate certificate and marking | In progress; not issued |
| Where it applies | Jamnagar, Gujarat: Crude and product tank farms, Marine loading facilities, Refinery process units | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Jamnagar 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 quotes 1.24 million barrels a day, while Reliance's current site quotes 1.4 million; the operator's figure is used here.
Wikipedia gives the refinery's commissioning as July 1999 and the site as over 7,500 acres, with utilities, port infrastructure and worker housing. Reliance's own site lists a refinery off-gas cracker and the world's largest petcoke gasifier.
The Jamnagar refinery, owned by Reliance Industries, was commissioned in July 1999 at 668,000 barrels a day and now has an installed capacity of 1.24 million barrels a day, the largest of any single refinery.
Jamnagar has a hot semi-arid climate, with March to May extremely hot and humid and an erratic monsoon averaging about 500 millimetres, from under 100 in dry years to over 1,500.
Polymer exports from the Jamnagar complex were moved through Port Pipavav by container, with volumes quadrupled to over 10,000 forty-foot containers in one year.
A second large refinery is at nearby Vadinar and is owned by Nayara Energy, described as India's second-largest single-site refinery.
A rugged phone is built to survive water, dust, drops and rough handling, usually rated by an IP code and a drop specification. Ruggedness is an environmental property: it says nothing about whether a phone may be used where flammable gas or dust is present. That is decided by explosion-protection certification and marking.
The IS-04Z1 combines both: an IP68 sealed rugged build and a design for Zone 1 and Zone 21 (marking target Ex ib IIC T4). The explosion-protection certificates are in progress and none has been issued.
In Jamnagar, Gujarat. Jamnagar sits on the Gulf of Kutch coast, so salt air, heat and dust affect devices left outdoors. An IP68 rating helps against dust and splashing during long outdoor shifts. It is an ingress rating only, so it neither replaces nor implies Ex protection for any classified area.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
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.
It is designed to IP68 sealing, with glove-friendly controls. Ruggedness is not explosion protection: that depends on the certificates, which are in progress.
Likely candidates are refinery process units, petcoke gasification, refinery off-gas cracker and petrochemical units, crude and product tank farms. 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.
Vadinar is a separate coastal town in Devbhumi Dwarka district with its own refinery and crude oil terminals, about 47 kilometres from Jamnagar airport. Many contractors serve both sites, but access arrangements are separate.
It is hot semi-arid, with a very hot and humid season from March to May and an irregular monsoon. Cyclones occasionally occur, so look for sealed devices with a suitable temperature range.
Not automatically. The complex has many unit types, and each area has its own classification and permit regime. A device may be acceptable in one and not in another. Confirm with Reliance's site safety team which areas an approved handheld may be used in.
Other guides for Jamnagar India, other places in India, and the pages behind them.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Name the site and the operator and we will send what is available before launch.