Where You Can't Open It, Drain It or Strike a Spark
On platforms, FPSOs, rigs and gas carriers, the safe way to verify a system is to never open it. Coltraco's non-invasive instruments, including the ATEX/IECEx Portalevel® IS for explosive atmospheres, confirm fire-cylinder charge, inert-gas pressure, watertight integrity and structural thickness from the outside, with the system armed and no Hot Work Permit.

A hazardous environment turns routine checks into risk
Offshore, the safety systems that matter most sit in exactly the places you least want to disturb: fire-suppression cylinders in gas-rich machinery and process spaces, inert-gas systems guarding the areas water would only make worse, and structures under constant marine attack. Weighing a cylinder, breaking into a gauge or running a flooding test means a permit, a shutdown, or a spark you can't risk.
Coltraco's instruments read ultrasonically through the cylinder wall, hull plate or seal, so the system is never opened and never taken offline. The intrinsically-safe Portalevel® IS extends that to ATEX/IECEx Zone 1 and Zone 2: the difference between a check that waits for a shutdown and one the crew can run today. SepcoTech supplies and supports the range, calibration included.
- Portalevel® IS: intrinsically safe for ATEX/IECEx Zone 1 & 2
- Non-invasive: no Hot Work Permit, no discharge, no shutdown
- Logged, repeatable readings for the safety case and class record
- One supplier for instrument, calibration, spares and advice

The Coltraco Instruments for Offshore & Energy
Each links through to full specifications, the brochure and the quote builder.

ATEX Fire-Cylinder Charge
Portalevel® IS is the intrinsically-safe level indicator for explosive atmospheres on LNG/LPG carriers, tankers and platforms, certified for ATEX/IECEx Zone 1 & 2, with no permit needed to test.
View level indicators →
Inert-Gas Pressure
Portagas® provides non-invasive pressure monitoring of inert-gas fire systems (Inergen, nitrogen, argon) to better than 5%, catching a slow loss long before the NFPA 2001 / ISO 14520 threshold.
View gas pressure →
Watertight Integrity
Portascanner® WATERTIGHT proves watertight doors, deck openings and cable transits seal on FPSOs and accommodation modules, down to a 0.06 mm aperture.
View watertight testing →
Structural Thickness
Portagauge® 6 gives multi-echo true-metal thickness through coatings for structural, caisson and pipework corrosion surveys, with a 200,000-reading data logger.
View thickness gauges →
Process & Cooling Flow
Portasonic® / Permaflow® offers clamp-on transit-time flow measurement on process, cooling and fire lines, with no pipe-cutting and no shutdown.
View flow meters →Working in a hazardous zone?
Tell us the asset, the area classification and the fire systems, and we'll spec the right intrinsically-safe Coltraco configuration and quote it.
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Rated for the Environment, Compliant with the Code
The certifications that matter when the test happens in a classified area.
ATEX / IECEx
Portalevel® IS is certified II 2 G Ex ib IIA T4 Gb for Zone 1 & 2, intrinsically safe in explosive gas atmospheres.
Gaseous Fire Systems
NFPA 2001 and ISO 14520: Portagas and Portalevel keep inert-gas and liquefied-agent systems within the agent/pressure thresholds.
Watertight Integrity
Portascanner® WATERTIGHT carries ABS Type Approval and RINA acceptance for watertight integrity testing.
Manufacturer Quality
Coltraco is ISO 9001 and ISO 14001 registered and a two-time Queen's Award winner. Approvals are confirmed per model at quotation.
On platforms and gas carriers where opening up isn't an option
Coltraco reports its Portalevel series deployed both onshore and offshore, including most of the North Sea's roughly 160 platforms in the UK and Norwegian sectors, and aboard gas carriers, oil tankers and chemical/product carriers, where the intrinsically-safe Portalevel® IS lets crews verify fire systems in classified areas.
Fleet- and platform-coverage figures as published by Coltraco Ultrasonics. SepcoTech is an Authorised Distributor and represents the manufacturer; we make no claim of endorsement on their behalf. Hazardous-area approvals are confirmed per model at quotation.
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