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Fire & Blast Walls

MTE Fire & Blast Systems have been independently type approved by Lloyd’s Register and DNV GL following witnessed testing in 2014 and 2015 at Exova Warrington fire testing facility, UK.

Fire testing was conducted against IMO Resolution MSC.307 (88), Annex 1: Part 3 and fire ratings of A0, A60, H0, H60 & H120, specified by Safety of Life at Sea (SOLAS), have been achieved.

Fire ratings are split into two main requirements, integrity and insulation performance. For all A rated fires, integrity must be maintained for a minimum of 60 minutes and for all H rated fires, a minimum of 120 minutes is required.

Jet fire testing was conducted at DNV GL Spadeadam against ISO 22899-1 and a 120 minute jet-fire rating has been achieved. Jet fire is tested on integrity only, with no thermal requirement.

MTE blast wall design is produced via MTE software which comprises a computerised non-linear elasto- plastic equivalent single degree of freedom analysis based on “Introduction to structural dynamics” by John M Biggs, and observing recommendations set out in the SCI-P-112 “Interim Guidance Notes

for the Design and Protection of Topside Structures Against Explosion and Fire”, with reference to FABIG technical notes, most particularly technical note 5.

MTE has also carried out over 100 hydrocarbon explosion tests on various products and where appropriate, the collated data has been incorporated into our proprietary design software, verified by Lloyds Register.

The highly comprehensive software can be used to design any form of overpressure, pulse or shock wave type loading. Analysis will determine both deflection and reflection limits, allowing for optimised design.

Fire and Blast walls can generalised into two main types of system, Non-load bearing and stressed Skin.

Non-load bearing walls are designed solely against operational loads such as fire, blast and environmental conditions. The design is chosen to any structural loads that would be transferred into.

Stressed skin walls are designed to withstand operational loads whilst providing structural support. The design removes the need for additional bracing which can minimise the required wall zone of the product.

There are many different iterations of fire and blast wall solutions which can be categorised as:

Deck to Deck


The traditional deck to deck system can be used in most applications and reduces the transfer of moment and reaction into structural steel. Deck to deck systems can typically be used in traditional platforms.

Overclad


Overclad systems provide suitable protection for structural steel, removing the need for the application of PFP, significantly lowering the cost of fire protection. Overclad systems are typically used in Living Quarters design.

Post & Panel


The post & panel application uses horizontally spanning walls, connected to vertical posts. This system is suited for blast instances where both a large span and large blast load are required typically in process areas.

Connections


Welded or bolted connections can be designed and provided for various fire and blast conditions, dependant on the loads involved.


Weight Saving and Optimised Solutions

For many years MTE have highlighted the benefits of their prefabricated fire and blast wall system.

In addition to the support offered via design, engineering and site installation, the MTE solution offers:

  • Industry-leading weight savings
  • Integrated penetration frames, including doors and removable panels
  • No need for PFP to wall areas
  • Minimal OPEX costs

MTE have selected a range of worldwide projects in harsh environments to act as case studies. The table below clearly highlights the significant weight saving benefits offered by the MTE prefabricated fire and blast wall system compared to the traditional flat plate (FP) system.

The project examples highlighted have either been fully designed and installed. Prefabricated walls in stainless steel require little or no maintenance during the design life of the platform.

Fire & Blast Walls

Wind Shields

Heat Shields

Louvred Walls

Blast Relief Systems

Blast Resistant Ducts

Escape Routes

Arctic Cladding