REF · 006-ENER06 / Energy · Offshore

Compressed air for energy sites and offshore platforms

24/7 continuity in extreme environments.

Energy sites - offshore platforms, refineries, thermal and nuclear plants - require total 24/7 availability in extreme environments: corrosive marine, vibrations, high temperatures, ATEX. The slightest interruption on instrument air can trigger a unit shutdown costing millions of euros per hour.

Technical challenges

What needs to be solved.

01Guarantee 99.9 % availability with minimum N+1 redundancy, PLC supervision, redundant alarms and long-distance service.
02Withstand marine environment (salt spray, 95 % humidity, vibrations) with DNV-GL certified anti-corrosion surface treatment.
03Maintaining DNV-GL certifications for offshore installations, with redundancy that holds when no quick intervention is possible.

CEZIUM technologies

Our technical answer.

On these sites, downtime costs more than the machine. The families below target continuity and installation.

Two-stage screw

22 to 250 kW

Planned maintenance on known intervals, and supervision that reports drift before failure.

27 catalogue models

Water-cooled refrigerated dryer

17 to 400 m³/min

The highest efficiency on a base load that never stops.

15 catalogue models

Standards & certifications

Applicable standards.

DNV-GLISO 9001CE

Compliances are verified case by case according to the selected model and audit scope. Complete documentation provided with each machine.

Air quality

The classes usually required

Instrument air is the critical point: losing it can trigger a unit shutdown. These classes are indicative; your own standard prevails.

ISO 8573-1 classes commonly met at each point of use, for guidance.
Point of use	Particles	Water (dew point)	Oil
Instrument and safety air	Classe 2	-40 °C (classe 2)	Classe 1
Process and starting air	Classe 3	+3 °C (classe 4)	Classe 2
Service air and tools	Classe 3	+3 °C (classe 4)	Classe 3

FAQ

The questions we are asked

Why a water-cooled dryer on these sites?

Because the ambient air there is often hot, laden or confined. An air-cooled condenser then loses its capacity and the dew point rises; a water-cooled condenser keeps its capacity and does not dump its heat into the room. In return it needs a cooling water circuit on hand.

What redundancy should instrument air have?

At minimum one machine able to carry the critical load on its own, with a changeover that does not depend on someone being there. The question is not only how many machines but the changeover time and the receiver's autonomy during it: that pair decides whether an interruption becomes an incident.

How do you maintain an installation that is hard to reach?

By shifting the effort to planning. Known maintenance intervals, wear parts kept on site, and supervision that reports drift before failure. Parts remain available for ten years, which makes keeping them possible without fear of obsolescence.

Going further

Worth reading before deciding

Predictive maintenance on air compressors: indicators, alerts, gains

Predictive maintenance eliminates 70 to 75% of breakdowns on average, according to the US Department of Energy, and extends component life. Here are the indicators to monitor and the alert thresholds.

How to calculate and reduce pressure drop in a compressed air network

A 1 bar pressure drop costs around 7% in energy across the whole compressed air installation. Here is how to calculate it, measure it and reduce it: pipe diameter, network layout, filters, dryer, fittings.

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