Gul yard
ST Engineering bought the roughly 141,000 square metre Gul yard in 2023 for ship repair, in addition to its Benoi yard, which is mainly for shipbuilding.
Seatrium's Pioneer Yard has a 1,400 metre quay with 8 to 10 metres of depth, and a second yard adds a 350 metre quay, giving long continuous berths for vessels under repair. Seatrium and ST Engineering shipyards at Gul, Benoi and Pioneer Sector create classified areas during vessel repair and coating work. If you are specifying an Ex-proof smartphone for Pioneer, Jurong Industrial Estate, 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 Pioneer, Jurong Industrial Estate: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. A buyer's engineering review is separate from the certificate. 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 | Pioneer, Jurong Industrial Estate: Shipyard and marine work areas, Paint and coating shops, Fabrication yards | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Pioneer Industrial Area. 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.
ST Engineering bought the roughly 141,000 square metre Gul yard in 2023 for ship repair, in addition to its Benoi yard, which is mainly for shipbuilding.
The planning area has a population density of about 4 people per square kilometre and sits within the Jurong Industrial Estate developed by JTC.
The equatorial climate brings year-round heat and humidity with frequent heavy showers, which affects outdoor shipyard work and the handling of electronic equipment.
Work at Seatrium's Singapore yards includes dry-docking, retrofitting, life extension and conversion of floating production vessels, gas carriers, tankers and jack-up rigs.
Basic worker residential blocks are provided at Benoi Sector and Pioneer Road, so much of the yard workforce lives close to the sites and arrives on foot or by company transport.
Seatrium lists Pioneer Yard at 50 Gul Road, Tuas Yard at 51 Pioneer Sector 1 and Benoi Yard at 15 Benoi Road, three separate gates within the same western industrial belt.
“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 Pioneer, Jurong Industrial Estate. Paint and coating shops and vessel work involve solvent vapour, so a marking check reads zone, gas group and temperature class from the tenant's own classification. Each tenant has a different hazard profile. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, still a target.
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.
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 shipyard and marine work areas, paint and coating shops, fabrication yards. 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.
Mainly shipyards: Seatrium's Pioneer, Tuas and Benoi yards sit in or beside the area, where tank entry, repair and coating work create temporary Zone 1 conditions on vessels. The estate also has general industry that is not classified, so ask each tenant for its own zoning.
Heat, humidity and heavy showers shorten battery life and test seals and connectors, particularly on open decks and quays. Choose devices with suitable ingress protection and a proper charging routine, and keep spare certified batteries in a dry safe area.
Seatrium and ST Engineering's Gul yard are the operators named for the area. Individual Seatrium yard names and their presence here were not confirmed, so ask the company which yard serves your project. Older references to Keppel-owned yards are out of date.
Related guides for Pioneer Industrial Area 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.
Name the site and the operator and we will send what is available before launch.