Integrated site
Bukom is linked by subsea pipeline to chemical units on Jurong Island, so contractors may work across both locations.
The Bukom and Jurong Island sites are joined by a 5 km subsea pipeline, which carries product between islands and reduces ship-to-shore transfers. Since April 2025 the complex has been owned by CAPGC and operated as the Aster Energy and Chemicals Park, so process units create Zone 1 areas. If you are specifying an Ex-proof smartphone for Pulau Bukom, this page covers the markings, the approvals and the current certification status of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Pulau Bukom: 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 |
|---|---|---|
| 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 | Pulau Bukom: Refinery process units, Ethylene cracker, Crude and product tank farms | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Pulau Bukom Refinery. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
The companies on site and the hazardous-area types a handset is likely to meet there.
Bukom is linked by subsea pipeline to chemical units on Jurong Island, so contractors may work across both locations.
Shell sold the Bukom refinery and Jurong Island chemical units to CAPGC, a Chandra Asri and Glencore joint venture, on 1 April 2025; the site now trades under the Aster name.
Pulau Bukom has been the site of Singapore's first oil refinery since 1961, and the island has hosted refining, trading and related services for more than six decades.
The Shell stake in the park was acquired in April 2025 by CAPGC, a joint venture between a Chandra Asri subsidiary and a Glencore subsidiary, and the site was renamed Aster Energy and Chemicals Park.
Aster Bukom concentrates on refining and ethylene production, while Aster's Jurong Island complex makes chemicals, so the two sites act as one integrated operation.
Singapore's equatorial climate gives consistent heat and humidity with frequent heavy showers, which affects open-air process plant, tank farms and jetties year round.
“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 Pulau Bukom. A marking check for process units classed as Zone 1 would start with the equipment protection level, gas group and temperature class on the label. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, which is not yet issued. Hydrocarbon duties often involve IIA or IIB gases, and ethylene work can call for IIB or higher; the operator confirms the requirement.
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.
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.
Likely candidates are refinery process units, ethylene cracker, crude and product tank farms, jetties. 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.
Yes. A 5 km subsea pipeline links Aster Bukom to Aster's chemical complex on Jurong Island, so the two sites run as one integrated operation. Expect shared safety standards between sites, but confirm site-specific rules with each location.
Aster describes Bukom as a fully integrated site focused on refining and ethylene production. That means crude units, cracker furnaces, tank farms and jetties, where Zone 1 and Zone 2 gas areas are typical. Exact zoning is set by the operator's area classification.
The site restricts access to personnel with security passes, and staff travel by ferry, so equipment is usually checked before the crossing. Ask the operator's security and HSE teams what device checks apply, and plan enrolment and charging before travel. Confirm the current process with the site operator.
Other guides for Pulau Bukom Refinery, other places in Singapore, 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.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.