XZT plan was to spend 3 hours at atmospheric pressure to add the solution. In fact, we spent 8 hours due topipeline blockage during dosing at the pressure range of 0.46-0.75MPa.Therefore, we didn’t have to increase the pressure to 0.3-0.5MPa as planned by XZT, but to extended the boilingtime under this pressure of 0.46-0.75MPa,which is acceptable.