Advantica have recently developed an uprating methodology that provides the operator with a logical and auditable justification of safe operation at the increased pressure that can be presented to the regulator for approval. The overall approach can be described by seven distinct phases; 1. Feasibility study 2. Data acquisition, field surveys and assembly 3. Stress analysis 4. Code compliance checks 5. Fitness-for-purpose assessments including Risk & ALARP assessment 6. Detail design 7. Safety justification submission The purpose of this paper is to briefly describe the above approach detailing the relevant aspects of each phase. Particular emphasis is given to the fitness-for-purpose phase which provides the major contribution to the overall safety justification. A case study is also provided within the paper detailing the application of the approach.
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