Remote location
The waterway is a deep natural harbour at the western end of Wales, so contractors often travel in for turnarounds.
Wales · Ex-proof
Ex-Proof Mobile Phone in Wales
Wales produced 30.2 TWh of electricity in 2018 and consumed 14.9 TWh, making it a net exporter, with gas generation at Baglan Bay and wind at Cefn Croes among its mix of plant. It hosts Valero's Pembroke refinery and the South Hook and Dragon LNG terminals, so Zone 1 work arises at process units, tank farms and gas handling areas. This page explains what to look for in an Ex-proof mobile phone for Wales (Milford Haven Waterway), and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicEx-proof
DeviceMobile Phone
RouteSpecification
WhereWales
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Wales (Milford Haven Waterway): 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.
At a glance · Ex-proof
Checklist: Ex-proof mobile phone for Wales (Milford Haven Waterway)
| 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 | Wales (Milford Haven Waterway): Refinery process units, LNG storage and regasification, Crude and product jetties | Classified by the site operator |
Product · Wales
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Wales. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The site · Wales (Milford Haven Waterway)
Wales (Milford Haven Waterway) at a glance: who is there, what is classified
A short profile of the site and the kinds of classified area that matter for portable equipment.
Operators and companies on site
- Valero
- South Hook LNG Terminal Company
- Milford Haven Port Authority
Classified areas to expect
- Refinery process units
- LNG storage and regasification
- Crude and product jetties
- Tank farms
Local conditions · Wales (Milford Haven Waterway)
Conditions in Wales (Milford Haven Waterway) that affect handheld equipment
Refining
The Pembroke refinery began operating in 1964 and has been owned by Valero since 2011. Cardiff terminal supply by coastal tanker comes from here.
Field notes · Wales (Milford Haven Waterway)
More about Wales (Milford Haven Waterway) that matters for portable equipment
Wales (Milford Haven Waterway): rules and approvals
In 2012 the Milford waterway was announced as an Enterprise Zone because of its importance to the energy sector, and parts of it lie within the Pembrokeshire Coast National Park with protected sites.
Wales (Milford Haven Waterway): industry on the ground
Airbus Broughton in the north-east employs over 6,500 people, mostly in manufacturing, and is responsible for wing assembly for most Airbus aircraft, so composites and solvent areas exist alongside heavy engineering.
Wales (Milford Haven Waterway): infrastructure
Two LNG terminals, South Hook on a former refinery site and Dragon LNG on a former Gulf refinery site, were built from 2006 and could eventually supply about 25% of the UK's gas needs.
Wales (Milford Haven Waterway): industry on the ground
Oil refining at Milford Haven began with the first oil terminal and refinery in 1960, and the waterway still carries the jetties, oil terminals and shore processing facilities of the oil and power industries.
The term · Ex-proof
What “Ex-proof” means for a smartphone
“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 Wales (Milford Haven Waterway). A marking check on the waterway would compare zone maps for LNG handling, where the gas is mainly natural gas, with refinery areas that handle a wider range of hydrocarbons. IIC marking offers margin. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, pending certification; the operator decides.
The route · specification
Specifying an Ex-proof mobile phone for Wales
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Check on the paper
- Marking
- Equipment group, category, protection concept, gas group and temperature class, matched to the area drawing.
- Certificate and schedule
- A certificate number, issuing body and the schedule of conditions, not a brochure claim.
- Standards edition
- The IEC 60079 or national standard edition the certificate was issued against.
Check for the IS-04Z1
- Marking target
- II 2 G Ex ib IIC T4: a target, not yet a certificate.
- Certificate status
- IECEx, ATEX, UKEX and NEC 500 in progress; none issued.
- Operator approval
- Separate from the certificate and handled with the site operator.
Questions · Wales
Frequently asked questions
Can we buy an Ex-proof mobile phone in Wales today?
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
What does an Ex-proof mobile phone in Wales cost?
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.
What Ex marking will the IS-04Z1 carry?
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.
Which areas at Wales (Milford Haven Waterway) would use it?
Likely candidates are refinery process units, lng storage and regasification, crude and product jetties, tank farms. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Is intrinsically safe the same as explosion proof?
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.
Do Welsh sites follow the same Ex marking rules as the rest of Great Britain?
Yes, Wales is within Great Britain's product rules, where equipment for explosive atmospheres is normally supplied with UKCA marking and CE-marked ATEX equipment has been widely accepted under transitional arrangements. Check the current position and any site-specific rules with the operator before supplying handheld devices.
How does the Welsh climate affect devices used outdoors?
Wales is mild but wet and windy, with salt spray at coastal terminals such as Milford Haven. Ingress protection, corrosion resistance and condensation tolerance are more important than extreme temperature ratings. Ask the site about its own environmental requirements for portable electronics.
What hazardous-area work is there in Wales?
The Milford Haven Waterway in Pembrokeshire hosts Valero's Pembroke refinery, which began operating in 1964, and the South Hook and Dragon LNG terminals. Zone 1 work arises at process units, tank farms and gas handling areas. Confirm requirements with each operator's HSE and procurement teams.
Related guides
Keep exploring
Related guides for Wales and for United Kingdom.
ATEX and IECEx Mobile Phone Distributor in WalesSame place, different guide
Explosion-Proof Mobile Phone in WalesSame place, different guide
IECEx Mobile Phone Distributor in WalesSame place, different guide
Hazardous Area Mobile Phone Distributor in WalesSame place, different guide
Industrial Mobile Phone Distributor in WalesSame place, different guide
Intrinsically Safe Mobile Phone Distributor in WalesSame place, different guide
ATEX and IECEx Mobile Phone Distributor in LondonElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in CardiffElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in Northern IrelandElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in EnglandElsewhere in United Kingdom
United Kingdom market guideCertification route and regulators
All guides for United KingdomEvery route we cover
Certification statusWhat is in progress
Enquiry · Wales (Milford Haven Waterway)
Ask about the IS-04Z1 for Wales (Milford Haven Waterway), United Kingdom
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Enquiry · Wales (Milford Haven Waterway)
Launching Q4 2026
Planning for Wales?
Name the site and the operator and we will send what is available before launch.