How should these sentences be translated smoothly? The PURASPEC vessels

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This post was last edited by niuky on 2010-1-2 at 10:05. 1. The PURASPEC vessels should be depressurised at a rate that ensures the bed does not fluidise and is not damaged. In any case, the rate should not exceed 10 bar/minute when the pressure is above 10 barg, nor 1 bar/minute when the pressure is below 10 barg. 2. It is recommended that the system be pressurised at a rate of no more than 1 bar per minute when the pressure is below 10 barg, and 10 bar per minute when the pressure is above 10 barg. This is usually achieved by using small bypass valves. 3. The vessels should be purged with nitrogen until the purge gas is free of hydrocarbons. Using a heated nitrogen stream can help complete the purging process in less time. This process should start as early as possible within the limits allowed by the shutdown procedures, so that any hydrocarbons adsorbed on the PURASPEC material can be vented out. During this time, the operator will regularly check the vessel for signs of hydrocarbons in the purge gas.