Climate
Hot, humid equatorial conditions with rain through the year.
The Balikpapan and Lawe-Lawe Refinery Development Master Plan raised crude capacity from 260 to 360 thousand barrels a day and added a 90 thousand barrel a day residue catalytic cracking unit. The RDMP upgrade is raising capacity from 260,000 towards 360,000 barrels per day, so process units and tank farms are Zone 1 areas. This page explains what to look for in a rugged mobile phone for Balikpapan, East Kalimantan, 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 Balikpapan, East Kalimantan: 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 | Balikpapan, East Kalimantan: Refinery process units, Residual fluid catalytic cracking unit, Crude and product storage | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Balikpapan. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
A short profile of the site and the kinds of classified area that matter for portable equipment.
Hot, humid equatorial conditions with rain through the year.
The Jakarta Post reported that the new residual fluid catalytic cracking unit was due to start in November 2025, with a naphtha unit following in mid-2026.
The refinery operator says it relies on technical staff with decades of petroleum-processing experience and works within Pertamina Group standards, so contractor induction typically follows Pertamina procedures.
The city has the largest economy in Kalimantan by GDP and is served by Sultan Aji Muhammad Sulaiman Sepinggan Airport, with Semayang as its main seaport, the second busiest in East Kalimantan.
Balikpapan is a seaport city on the east coast of Borneo and the financial centre of Kalimantan, with about 757,000 residents in 2023, making it the second most populous city in East Kalimantan.
Indonesia's six large refineries are Cilacap, Balikpapan, Dumai, Musi, Balongan and Tuban, and the country imported about 787 thousand barrels a day of petroleum products in 2024, so reliability work at Balikpapan matters nationally.
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 Balikpapan, East Kalimantan. Balikpapan is hot and humid with rain through the year, so handsets face moisture on tank farms and at the mooring. IP68 rates dust and water ingress. It does not provide explosion protection, which must be assessed separately for the specific zone where the device will be carried.
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, residual fluid catalytic cracking unit, crude and product storage, marine crude mooring and tanks. 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.
Oil and gas dominate the local story, with the refinery, fuel terminals and port tank storage. East Kalimantan also has coal and LNG activity regionally, but confirm with each operator which classified-area rules and device permits apply to its own facility.
Reasonably. The city has an international-class airport at Sepinggan and the Semayang seaport, and it is the main commercial centre of Kalimantan. Allow time for customs clearance and for any site gate checks on electronic devices entering the refinery.
Equatorial heat and constant humidity affect battery life, seals and charging habits. Check the rated operating temperature range and keep charging in a safe area, away from classified zones. IP68 is useful against rain, but it is not explosion protection.
More on Balikpapan, and on other places in Indonesia.
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.