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.
Pioneer is bounded by Jurong West, Boon Lay, Tuas and the Jurong Strait, and has five subzones: Benoi Sector, Gul Basin, Gul Circle, Joo Koon and Pioneer Sector. Seatrium and ST Engineering shipyards at Gul, Benoi and Pioneer Sector create classified areas during vessel repair and coating work. This page explains what to look for in an IECEx mobile phone for Pioneer, Jurong Industrial Estate, 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 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.
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 |
|---|---|---|
| Certificate of conformity | Number checkable on the IECEx online register | In progress; not issued |
| Standards edition | The IEC 60079 edition the certificate cites | Stated on the certificate when issued |
| Schedule of conditions | Limits of use, batteries and accessories | Published with the certificate |
| 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.
A short profile of the site and the kinds of classified area that matter for portable equipment.
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.
Joo Koon MRT station opened on 28 February 2009 to serve Jurong Industrial Estate, and the East-West Line now runs further west to Tuas Link, so the estate has a direct rail link for staff.
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.
The area was once called Jalan Besi, meaning Metal Road, until JTC renamed local roads in English during the development of Jurong Industrial Estate.
The equatorial climate brings year-round heat and humidity with frequent heavy showers, which affects outdoor shipyard work and the handling of electronic equipment.
IECEx is the international scheme for certifying equipment used in explosive atmospheres. A certificate of conformity is issued by an accredited certification body against a specific edition of the IEC 60079 standards and carries a schedule of conditions of safe use. It is not a legal requirement in most countries on its own, but many national schemes accept it as the technical basis.
The IECEx certificate for the IS-04Z1 is in progress and has not been issued. The marking target is Ex ib IIC T4, the intrinsic safety concept for Zone 1 gas with the hardest gas group (IIC) and a 135 °C temperature class.
In Pioneer, Jurong Industrial Estate. Shipyards in the Pioneer area serve international vessel owners, so IECEx is a convenient reference for gas-free and coating work. A certificate of conformity and schedule of conditions would be reviewed. For the IS-04Z1 these remain targets, as certification is in progress.
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.
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.
No. The IECEx certificate is in progress and has not been issued. SAMS will publish the number when it exists.
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.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.