Aster
Aster describes the Pulau Bukom refinery as operating at 237,000 barrels per day.
Visitors surrender contraband such as matches and lighters, declare cameras, computers and laptops, wear a security pass at all times and stay with their sponsor inside the refinery. Process units, tank farms and jetties create Zone 1 and Zone 2 areas. A hazardous area mobile phone distributor in Singapore refineries would carry the IS-04Z1 to these buyers once certification completes.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. Singapore refineries has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Zone | 0, 1 or 2 for gas; 20, 21 or 22 for dust | Designed for Zone 1 and Zone 21 |
| Gas group | IIA, IIB or IIC | IIC (target) |
| Area drawing | The operator's own classification drawing | Decided by the site operator |
| Where it applies | Singapore refineries: Jetties, Utility and cogeneration areas, Refinery process units | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Singapore Refinery. 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.
Aster describes the Pulau Bukom refinery as operating at 237,000 barrels per day.
ExxonMobil states it owns and operates a 592,000-barrel-per-day refinery integrated with its chemical plant, with three cogeneration facilities producing around 440 MW.
The refinery's main entrance is reached via Merlimau Road along Jurong Island Highway, after a stop at the Jurong Island Checkpoint where visitors collect a visitor pass.
Pulau Bukom has been home to Singapore's first oil refinery since 1961, and Aster's Bukom complex continues to refine crude alongside ethylene production.
The organisation includes dedicated functions for process safety, reliability and maintenance, and procurement and warehouse, which are the usual contacts for contractors and equipment suppliers.
The refinery's published rules state that mobile phones and other electrical or electronic equipment must not be used in the process plant area or other classified hazardous areas.
A hazardous area is a place where flammable gas, vapour or combustible dust may be present. Standards divide these into zones: Zones 0, 1 and 2 for gas and vapour, and Zones 20, 21 and 22 for dust. Zone 1 and Zone 21 are the tier where an explosive atmosphere is likely to occur in normal operation, which is where the IS-04Z1 is designed to work. Anything carried in must be marked for the zone, gas group and temperature class of the area.
No certificate has been issued for the IS-04Z1 yet, so it must not be taken into a classified area until the certificate covering it exists and the site operator has accepted it.
In Singapore refineries. The classified areas are refinery process units, crude and product storage, jetties and utility and cogeneration areas. The operators, not SAMS, classify them. With about 1.5 million barrels a day processed across the sites, a specifier should ask each refinery for its own classification documents.
A distributor for Singapore refineries would carry the IS-04Z1 after certification completes; the Q4 2026 launch is the planning date and no appointment has been made. SAMS reviews applicants one by one and prefers companies with their own Ex-competent technical and service staff, since certified devices must not be repaired outside approved channels.
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.
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
Zone 1 and Zone 21 (gas and dust) with gas group IIC and temperature class T4, subject to certification. It must not be used in a classified area before its certificate is issued and the site has accepted it.
Likely candidates are refinery process units, crude and product storage, jetties, utility and cogeneration areas. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Singapore refineries.
One refinery on Jurong Island publishes a ban on mobile phones and other electrical or electronic equipment in its process plant and classified hazardous areas. Devices certified for the zone may be allowed only with prior approval, so ask your sponsor before the visit.
Typically a visitor pass at the island checkpoint, a plant security pass, an indemnity form, security screening, declaration of electronic equipment and an escort by a named sponsor for the whole visit. Allow extra time at the gate and arrive with approved paperwork.
Hydrogen is a Group IIC gas, so any unit handling it can call for IIC equipment, whereas many fuels fall in IIA or IIB. The IS-04Z1 target marking includes IIC but is not yet issued. Ask the refinery which units hold hydrogen.
Related guides for Singapore Refinery and for Singapore.
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.