Lone working at a remote works
A rural digester or a kiosk on a verge usually has one person at a time. The IS-04Z1 carries 4G LTE and Wi-Fi and, as an Android Enterprise device, can run the lone-worker service a utility already uses.
United Kingdom · Utilities and Waste
Explosion proof mobile phone for Utilities and Waste in the UK
UK utilities and waste sites put Zone 1 and Zone 2 work in places few people picture as hazardous: a gas governor on a verge, a sewage digester, a biogas upgrader, a waste bunker. An explosion proof mobile phone for the United Kingdom serves these sites because the people are often alone and the classification changes with the equipment. This page covers gas distribution, water and sludge treatment, anaerobic digestion and energy from waste. The IS-04Z1 is designed for Zone 1 and Zone 21 and is pre-launch, with certification in progress ahead of Q4 2026. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · certification programme in progress
Local approvalUKEX · ATEXATEX · UKEX in progress
AvailabilityQ4 2026via authorised distributors
The sector · UK utilities and waste
Explosion proof mobile phone for UK utilities, biogas and waste sites
Gas distribution is the most visible part. Cadent runs four of the eight gas networks, and SGN serves Scotland, where it reaches about three-quarters of households, and southern England, where it supplies roughly four million customers, across about 74,000 km of pipe. Both take gas from the National Transmission System and, increasingly, from biomethane plants. Behind that, anaerobic digestion has grown to roughly 750 plants producing biogas, of which a share is upgraded and injected into the grid. Water companies run their own digesters: Thames Water’s Beckton works serves more than three million people and has a 6 MWe combined heat and power installation fuelled by biogas, and its Crossness and Beckton sites have advanced digestion plants. Energy from waste adds a different risk, because the combustible dust at lime and carbon handling points sits next to methane that collects in waste bunkers. Veolia and Viridor are among the large operators. The common thread is a classified area in a place that is otherwise a normal workplace.
Types of site
- Gas distribution
- Governor kiosks, above-ground installations and emergency excavations on the Cadent and SGN networks.
- Sewage treatment and digesters
- Biogas from sludge digestion feeding CHP engines at the largest works.
- Anaerobic digestion
- Farm, food waste and municipal plants producing biogas and biomethane.
- Biomethane injection
- Upgrading and grid-entry equipment where biogas becomes pipeline gas.
- Energy from waste
- Bunker, boiler and flue gas treatment areas with gas and dust risk.
Classified situations
- Digester vents and gas holders
- Biogas release points; Zone 1 near vents, Zone 2 in the surrounding area.
- Gas upgrading plant
- Compression, scrubbing and odorisation of biomethane.
- Waste bunker and tipping hall
- Methane accumulation in a space where people may need to inspect.
- Lime and carbon dust handling
- Silos and bag filters in a flue gas treatment area; Zone 21 or 22.
- Governor and pressure reduction sites
- Small open-air plants with vent stacks.
Built for local conditions
What a utility or waste site does to a handset
These are working sites with weather, wet and dirt as well as gas and dust, and often only one or two staff on shift.
Wet, dirty and washed down
Treatment works and waste halls are hosed down and get sludge, spray and grit on equipment. IP68 sealing and rugged build are what let a handset be rinsed under a tap at the end of a shift.
Biogas, not just natural gas
Biogas is mostly methane with carbon dioxide and traces of other compounds. The IS-04Z1 is designed to an II 2 G Ex ib IIC T4 target, which covers the gas groups of both natural gas and biogas in Zone 1.
Dust and gas on one site
An energy-from-waste plant has lime and carbon dust in one area and methane in another. A device designed for Zone 1 and Zone 21 together avoids a second handset for each hazard.
A single managed estate
Android 16 with Android Enterprise and MDM support lets a utility enrol, restrict and update these units next to its ordinary handsets, and lock the camera or applications where a site requires.
Use cases · UK utilities and waste
Where the IS-04Z1 goes to work in the sector.
Gas01
Governor rounds and gas escape response
An engineer on a pressure reduction round or at a gas escape needs a photograph, a position and a call to the control room. The page on explosion proof phone for Cadent covers the network side in more detail.
Water02
Digester and CHP plant inspection
An operator inspecting a sludge digester, a gas holder or a CHP engine hall records readings and photographs defects in a classified area, without leaving the zone to use the camera or log the visit.
Waste03
Energy from waste and biomethane plants
A technician working in a bunker, a tipping hall or a gas upgrading plant carries the permit and the isolation record on the handset, and the same unit serves for dust areas around the flue gas treatment.
Questions · UK utilities and waste
Frequently asked questions
Is natural gas different from biogas for classification?
Both are flammable gas, and zoning is set by the site’s hazardous area assessment under the Dangerous Substances and Explosive Atmospheres Regulations. Biogas can also contain other compounds, so give the assessment to any supplier when you ask about a handset.
Do water companies and waste operators approve suppliers the same way?
Not necessarily, and we have not verified a standard programme across the sector. Ask each company’s procurement, engineering and HSE teams what a handheld in a classified area has to show.
Is the IS-04Z1 suitable for a bunker with methane?
A waste bunker’s classification depends on ventilation and the operator’s assessment, so the design target is an input to that assessment rather than a substitute for it. The handset is designed for Zone 1, and certification is in progress.
Is the IS-04Z1 available now?
No. It is pre-launch, with IECEx, ATEX and UKEX certification in progress ahead of Q4 2026, and SAMS has no pilot or supply agreement with any UK utility or waste operator.
Enquiry · Utilities and Waste
Ask about the IS-04Z1 for Utilities and Waste, United Kingdom
Tell us the site, the zone and gas group, and roughly how many handsets. The SAMS team replies by email with the datasheet and the certification schedule for United Kingdom. The IS-04Z1 is pre-launch and certification is in progress, so there is no list price yet; indicative pricing is issued in writing against a stated quantity and site.
Enquiry · Utilities and Waste
Launching Q4 2026
Evaluating the IS-04Z1 for this site?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule for your market.