Fire protection and purging steam
Thread Content
Can the fire steam in the cold exchange area and on the tower be used for purging? If temporary purge connectors are installed at all the purge points in the cold exchange area, is it still necessary to have a dedicated purge steam pipeline? Or can one steam line be used for both fire protection and purging purposes? Also, is the steam from the hose station connected to the fire protection steam pipeline? Looking forward to your advice!
For safety reasons, fire-fighting steam must be used specifically for this purpose; temporary blowing nozzles cannot be connected, nor can the same pipeline be used. Fire-fighting steam must be supplied separately from the steam main. During normal production, a blind flange should be installed on the purging head; it must not be opened casually to prevent steam from leaking in.
Design-wise, fire steam and purge steam should be separated
They must be separated; fire steam needs to be in use during normal production. Generally, a drain valve is installed at the end or heating is provided to ensure there is flow, preventing freezing in winter. The purging steam is only used during shutdown periods; it is turned off during normal production.
Is the fire suppression steam connected to the hose station?
What is a hose station? Are you referring to the fire hydrant? That should be water for firefighting purposes; the steam is connected to the steam bus…
No, it’s not a fire hydrant; it’s a utility station located in the plant area, a utility station equipped with connections for fresh water, steam, compressed air, and nitrogen.
Reply to 7# huanyu112: That utility station should be what we refer to as a service point here; the steam at that service point should also be connected to the main steam pipeline, while the fire-fighting steam is directly connected to the main steam pipeline. You can go to the site to check the steam process at the service point.
The steam at that hose station is probably meant for purging purposes; steam for firefighting must be supplied separately from the main steam pipeline and used exclusively for that purpose.
I have a question for the person on floor 8: if the service points on the ground level can be connected to the main steam pipeline, what about those on the platform? Is it a separate pipeline dedicated to the service point, or is it shared with steam pipes for other functions? Are there any relevant regulations or standards for fire protection steam, service station steam, and purge steam?
Reply to 9# Cliff Green Pine: The steam from the hose station is indeed used for purging purposes, but it’s clearly insufficient for purging the hose stations on a large scale. Are you saying that the hose stations on the platform are connected to the purging steam line? So, is this steam cut off at the outlet of the main pipe when there is no purging?