Is steam purging still required after the device maintenance?
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Is steam pressure testing and purging still required after the device’s maintenance? Is steam pressure testing required after the tower is overhauled? If necessary, how should pressure testing be carried out? Please share how you handled things after maintaining your equipment Bonus points
I. Steam flushing and pressure testing 1. Purpose 1) To check whether the equipment and pipelines are unobstructed. 2) Check whether the installation of equipment and pipelines meets the design requirements. 3) Remove debris and slag from the pipelines and equipment. 4) Check the construction quality of equipment and pipelines. 5) Conduct pressure testing on the equipment in accordance with the design requirements. 2. Requirements for pressure testing: 1) Before purging, the instrument leads should be closed to prevent blockages or damage to the instruments. Once the pressure testing is complete successfully, contact the instrument technician to start testing the instrument system; at the same time, it is necessary to carry out pressure testing on the on-site level gauges as well. 2) Range before pipeline penetration
After the tower is overhauled, natural gas is used for displacement; this is a distillation tower. Before maintenance, it was purged with steam.
Purging should be carried out. The second floor explained it in great detail.
Before maintenance, steam is used for purging, or in other words steaming, to remove flammable gases; after maintenance, air is used to check for leaks, and nitrogen is used for displacement, with no need for further steam purging.