The pressure on oil and gas facilities to extend their lifetime continues to grow as the requirement for oil and gas increases, as well as products made from these raw materials, despite climate pressure and the developing transition to future fuel provision. Often the limited budget for facilities is required to be prioritised on corrosion under insulation leaving little to address the year-on-year impact of failing fire protection. Test data, tools and solutions to prioritise repairs on passive fire protection to ensure the safety of personnel, particularly from falling hazards, and to minimise escalation in a fire event is in urgent need. This paper outlines testing and engineering evaluation which allows an increased judgment on the severity of defects. This combined with a criticality analysis of plant and process allows site engineers to better prioritise repairs and develop novel strategies to mitigate the effects of fire. Where strategies to allow aging passive fire protection to meet the expected service life fail, and the repair-ability of existing materials is difficult, novel repair solutions exist to reinstate the fire performance, again for defined period, whilst planning is undertaken to replace the passive fire protection for expected future operation.