Abstract

As an integral part of the platform's emergency response procedures, passivefire protection (pfp) has been designed for the decks of the Mars, Ram/Powell& Ursa Tension Leg Platforms which lie in the deepwater Gulf of Mexico.

The area and thickness requirements for the pfp coating are developed for the primary deck steel on each of the platforms. The design process is described in detail, from the defmition of the fire scenario to the treatment of the fire's heat flow characteristics and the application of data representmgsteel properties at elevated temperatures. Optimization of the area of primarysteel requiring protection is discussed with reference to ultimate strengthanalysis which is used to ensure that the pfp coating is applied for maximum effect.

The quality of the application process at the fabrication facility has been identified as a fundamental component in achieving the specified level of protection. Key issues concerning the application of the pfp material have been identified and are presented as criteria established to aid in the selection of a fire proofmg material.

The application of the pfp coating represents a substantial amount of work in the fabrication process and as such has the potential to significantly affect the fabrication schedule. Details of experience gained from the successful application of the fireproofing material on three major projects are presented.

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