Operating refineries
Reported capacities are roughly 270,000 barrels a day at ExxonMobil's Fawley on Southampton Water, about 296,000 at Stanlow in Cheshire and about 221,000 at Phillips 66's Humber site in North Lincolnshire.
England · intrinsically safe
Intrinsically Safe Mobile Phone in England
England hosts three of the UK's four operating refineries, Fawley, Stanlow and Humber, with Pembroke in Wales the fourth. Classified areas also occur at fuel terminals, gas networks and chemical sites. Lindsey stopped refining in 2025. This page explains what to look for in an intrinsically safe mobile phone for England, 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 topicintrinsically safe
DeviceMobile Phone
RouteSpecification
WhereEngland
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for England: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for England
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | England: Refinery process units, Fuel terminals and tank farms, Marine oil jetties | Classified by the site operator |
Product · England
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 England. 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 · England
England: where the IS-04Z1 would work
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Operators and companies on site
- ExxonMobil
- EET Fuels (Essar)
- Phillips 66
Classified areas to expect
- Refinery process units
- Fuel terminals and tank farms
- Marine oil jetties
- Petrochemical units
Local conditions · England
Site conditions at England: what wears and what limits equipment
Lindsey
Lindsey closed in 2025 after owner Prax became insolvent; Phillips 66 agreed in January 2026 to acquire assets but said it will not restart it as a standalone refinery.
Field notes · England
More about England that matters for portable equipment
England: rules and approvals
COMAH 2015 is enforced by a joint Competent Authority: HSE, or the Office for Nuclear Regulation for nuclear sites, working with the Environment Agency in England, Natural Resources Wales or SEPA in Scotland.
England: projects and investment
Major-hazard sites fall under the Control of Major Accident Hazards Regulations 2015, with HSE publishing guidance and public information on establishments covered, so top-tier and lower-tier sites follow a further regime.
England: rules and approvals
Employers must identify and classify areas where explosive atmospheres may occur and avoid ignition sources, for example from unprotected equipment, in those areas.
England: industry on the ground
HSE lists dangerous substances as including solvents, paints, varnishes, flammable gases such as LPG, dusts from machining, sanding and foodstuffs, pressurised gases and substances corrosive to metal.
The term · intrinsically safe
What “intrinsically safe” means for a smartphone
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In England. Operators at Fawley on Southampton Water, Stanlow in Cheshire and the Humber site make rounds over process units, tank farms and jetties. A handheld designed for intrinsic safety suits those rounds and turnaround inspection, since photographs, readings and permits can be handled at the point of work without leaving the classified area.
The route · specification
Specifying an intrinsically safe mobile phone for England
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 · England
Frequently asked questions
Can we buy an intrinsically safe mobile phone in England today?
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.
What does an intrinsically safe mobile phone in England cost?
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.
What does ‘intrinsically safe’ mean for the IS-04Z1?
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
Which areas at England would use it?
Likely candidates are refinery process units, fuel terminals and tank farms, marine oil jetties, petrochemical units. 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.
Who enforces explosive-atmosphere rules in England?
The Health and Safety Executive, and in some premises local authorities, enforce DSEAR. They expect employers to carry out a risk assessment, classify areas and control ignition sources. Ask your client which assessments and records apply to your work.
Do dust risks count as explosive atmospheres in England?
Yes. HSE lists dusts from machining, sanding and foodstuffs among dangerous substances, so combustible dust areas can be classified in the same way as gas areas. Check whether your task is near flour, wood, metal or grain handling and ask for the zone classification.
Which English sites are the main hazardous-area demand?
England hosts three of the UK's four operating refineries: Fawley, Stanlow and Humber. Fuel terminals, gas networks and chemical sites also contain classified areas. Lindsey stopped refining in 2025. Each operator assesses its own zones, so confirm requirements with the site operator for the specific site.
Related guides
Keep exploring
More on England, and on other places in United Kingdom.
Industrial Mobile Phone in EnglandSame place, different guide
Hazardous Area Mobile Phone in EnglandSame place, different guide
Rugged Mobile Phone in EnglandSame place, different guide
IECEx Mobile Phone Distributor in EnglandSame place, different guide
Explosion-Proof Mobile Phone Distributor in EnglandSame place, different guide
ATEX and IECEx Mobile Phone Distributor in EnglandSame place, different guide
ATEX and IECEx Mobile Phone Distributor in CardiffElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in LondonElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in WalesElsewhere in United Kingdom
ATEX and IECEx Mobile Phone Distributor in ScotlandElsewhere in United Kingdom
United Kingdom market guideCertification route and regulators
All guides for United KingdomEvery route we cover
Certification statusWhat is in progress
Enquiry · England
Ask about the IS-04Z1 for England, 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 · England
Launching Q4 2026
Planning for England?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.