Explosion Proof Lighting Blog | Guides & Technical Articles

Portable Explosion Proof Lighting: Choosing Hand Lamps and Work Lights for Hazardous Areas

Date： 2026-09-26

By SEEKINGLED Engineering Team · September 2026 · 8 min read

Fixed lighting covers normal operation. Turnarounds, vessel entries and night call-outs run on portable lighting — the equipment most often found uncertified during hazardous area audits. Here is how to specify the portable fleet correctly.

On this page

When portable lighting is used
Two classes of portable
Spec comparison
Battery rules
Fleet standardisation
FAQ

Where Portable Ex Lighting Earns Its Keep

Scenario	Why fixed lighting isn't enough
Turnaround / shutdown	Area lighting often de-energised; vessel-entry permits require local task lighting
Confined space entry	Interior of tanks, towers, sewers — Zone 0/1 by classification
Night emergency repair	Local illumination at the failure point
Inspection rounds	Hand lamps for close visual checks of flanges, seals

Two Classes of Portable Lighting

Class	Protection	Power	Use
Hand lamps / inspection torches	Ex i (intrinsically safe)	1–20 W	Confined spaces, close inspection — lightest, safest class
Portable work lights / tripod floods	Ex db or Ex nR	30–300 W	Area task lighting during turnarounds

The division follows power: intrinsic safety caps stored energy, so high output requires flameproof or non-sparking construction — but with the battery pack and driver engineered to the same category. Fleet starting points: HB21 portable explosion proof lighting (Ex db, Zone 1/2) for high-output task lighting, and FL8 portable work light (Ex nR, Zone 2/22) for general turnaround areas.

Portable fleets should be certified to the zone where they are actually deployed

Specifying the Portable Fleet

Requirement	Hand lamp (Ex i)	Portable work light (Ex db/nR)
Certification scope	Lamp including cells	Lamp + battery + charger per certificate
Zones	0/1/2 as per ia/ib level	1/2 or 2/22 per marking
Light output	100–1,500 lm	3,000–40,000 lm
Runtime	6–12 h typical	4–10 h or mains-powered
Charging rule	Outside the hazardous area (usual special condition)	Per certificate conditions
Accessories	Static-safe hooks, guards	Tripods, magnetic mounts, cable reels (certified)

Battery Rules That Catch Buyers Out

Charging location: most certificates require charging outside the hazardous area — printing this on the charger prevents the classic audit finding
Cell replacement: field-replacing cells with non-certified equivalents voids the Ex certificate; buy cells from the fixture manufacturer
Stored energy limits: Ex i models constrain capacity by design; do not "upgrade" capacity with third-party packs
Labels survive the job: portable gear gets scraped and painted — order spare Ex nameplates with the fleet

Fleet Standardisation Pays

Sites that standardise one portable family per zone report simpler inspection documents and lower loss rates. A practical fleet for an oil & gas facility:

Zone 1 turnarounds: Ex db portable floods (FL8/FL7-derived portable work lights at 50–300 W) + Ex i hand lamps for vessel entry
Zone 2 general: Ex nR portables — lighter and cheaper for the large routine fleet
Fixed companion: certified emergency and exit lighting from the same manufacturer's portfolio

Turnaround planning: send your shutdown scope and zone list to sales02@seekingled.com for a portable lighting schedule — hand lamps, tripod floods and charging logistics quoted together with your fixed-lighting packages.

Frequently Asked Questions

What is portable explosion proof lighting?

Portable explosion proof lighting covers movable certified luminaires — hand lamps, task lights, tripod work lights and magnetic-mount floods — carrying Ex markings for the zone where they are used. Anything brought into a hazardous area by a technician, including torches and headlamps, falls under the same certification requirement.

Do I need certified torches in a hazardous area?

Yes. A torch carried into a Zone 1 or Zone 2 area is equipment and must be certified for that zone — the switch in an ordinary torch is a spark source. This is a frequent inspection finding: personal devices are the most common uncertified equipment found in process units.

Ex i or Ex db for portable work lights?

For low-power hand lamps and inspection lights, Ex i (intrinsically safe) is standard and lightest. For higher output — 50–300 W portable floods on tripods — Ex db or Ex nR constructions apply, with the battery/driver section certified to match. If the work area is Zone 2 only, Ex nR portables save weight and cost.

What about battery-powered portable lights in hazardous areas?

Batteries store energy, so they receive specific attention: certified portable lights use protected cell packs, certified charging arrangements (charging outside the hazardous area is a common special condition), and energy-limited circuits for Ex i models. Follow the certificate's special conditions on charging and cell replacement exactly.

When is portable lighting most used?

Turnarounds and shutdowns (permanent lighting is de-energised for vessel entry), confined-space entry and inspection, night maintenance on rotating equipment, and emergency response. Sites standardise portable fleets per zone so technicians never have to judge suitability under time pressure.

Get a Quote for Your Project

Send us your hazardous area classification (zone, gas group, temperature class) and target lux levels — our engineers will reply with a full lighting layout and FOB Shenzhen quotation within 24 hours.

Email: sales02@seekingled.com | Exporting to 70+ countries · 1,000,000+ units shipped per year

Back