INMACO - Offshore Active Fire Protection and Safety Engineering Services for FPSOs

INMACO provides offshore safety and loss prevention engineering services and process systems, and works as a safety contractor. Our competence lies in technology, product know-how, project execution, integrated solutions and overall customer satisfaction.

Through subsidiaries, affiliates and agent networking INMACO’s goal is to be a global oil and gas industry provider of safety engineering and contracting services, integrated solutions and high technology products.

FPSO vessel safety and fire protection engineering services

INMACO’s engineers have many years of experience with active fire protection in the offshore industry. We offer technical safety design, fire and explosion protection, firewater ring main and distribution system design, static and transient hydraulic calculations, and offshore material and corrosion calculation, according to NFPA, PED, SIL, ATEX, ASME, API, ANSI, BS, AS, ISO, DNV, Lloyds and NORSOK standards.

In addition, we supply the following wide range of safety and fire protection engineering services:

• Feasibility studies
• System functional specifications
• Reliability and availability studies
• Consequence analysis
• Planning and supervision of total installation
• Fire risk consideration, and selection on type of fire
• Protection system / equipment
• Preparation of fire protection plot plans and piping
• Instrument diagrams
• Design of deluge and sprinkler nozzle layout drawings
• Design of deluge distribution piping
• Hydraulic calculations and balancing (static and transient analysis) of deluge piping distribution systems by use of pipe net software

Offshore active fire protection

Fixed fire-fighting systems should be installed in areas representing a major fire risk, and particularly cover equipment containing significant quantities of hydrocarbons.

In addition to deluge, foam supply should be provided for all areas where hydrocarbon or alcohol pool fires are likely to occur. According to international standards, the fire water system shall be operable at all times, including periods of maintenance, and shall ensure adequate supply of water for fire fighting.

Active fire protection products and systems

INMACO acknowledges these strict international requirements and adopts these specifications into high-quality and reliable products and systems. We offer a complete range of systems and products, including:

• Deluge systems
• Sprinkler systems
• Foam systems: local, centralised and high expansion
• Water mist systems
• Powder and dual agent systems
• Gaseous systems such as inergen, argonite, FM200 and CO2
• Firewater monitors, hose reels and hydrants
• Foam proportioning equipment
• Deluge, sprinkler and foam nozzles
• Hydrophore systems
• Foam concentrates
• Powder

Offshore nitrogen generation services

Nitrogen is used extensively for drilling, completion and workover of oil and gas wells, and for pressure maintenance and gas storage in condensate formations.

It can be generated on-site at high pressures and low oxygen levels to safely prevent ignition of flammable gases or protection of field tubulars from downhole corrosion.

Inert gas is used for blanketing and purging of chemical tanks, and for purging of equipment and systems before maintenance. The inert gas system can be divided into three sub-systems:

• Nitrogen generator / source
• Storage system
• Distribution system

Nitrogen generators for FPSOs

INMACO offers a nitrogen gas generator package for FPSOs, which uses membrane separators to produce nitrogen from compressed air. It is a skid-mounted unit, complete with all necessary instrumentation and controls for unattended operation.

Dry, compressed air is fed to the nitrogen generation package from the FPSO air system. The pneumatic operated isolation valve located at the skid feed air inlet will open at system start-up, allowing air to flow into the skid for nitrogen separation. The feed air passes through the particle filter, which filters all particles above 0.01µm in size.

Pressure drop across the filter will be continuously monitored by a differential pressure-indicating transmitter. A high alarm will indicate clogged filter element and requirements for replacing. Two 100% capacity filters are included meaning the filter element can be replaced while the machine is in operation.

Offshore safety system service and upgrades

INMACO offers service and upgrades on the following safety systems:

• Deluge and sprinkler systems
• Powder and foam systems
• Water mist
• Gaseous systems
• Monitors, hose reels and hydrants
• Fire extinguishers
• Nitrogen generation systems
• Deluge skid test

Offshore safety system after-sales and service and maintenance

Although the majority of INMACO’s safety systems are delivered as skid units, some installation work is still required. We offer installation and commissioning assistance on all products and systems supplied.