ASK, Joint Venture between Aker Solutions and Kværner, has been awarded the contract for the Johan Sverdrup RP mod EPCI project. Equinor has requested fire blowdown and fire integrity calculations to be performed for blowdown the Oil Export bridge segment and the Gas Export Segment. ASK has subsequently requested Petrell to perform this analysis. Fire blowdown and fire integrity analysis of the two segments has been conducted by means of VessFire. The aim was to find an orifice size that provided a depressurization of the blowdown as fast as possible with no pressure increase, and to provide information regarding assessment of risk by over-filling the Knock-out Drum. The final report was delivered in May 2019.