Actually we are running our OLS with high pressure steam (the same velocity steam during normal operation). There is known that some coker heaters can run the OLS using BFW. Which are the main differences (advantages and deadvantages) of using this two services?. If there is an incentive of using BFW instead of Steam, There is a way for modifying a furnace from the HPS to BFW?. Thanks in advance for your answer.