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I need detailed operating procedures for the normal and emergency shutdown of Hangzhou Steam Turbines

2016-09-04View Original

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This post was last edited by libingtaoff8 on 2016-9-4 at 15:46. We have a turbine that drives the hydrogen circulation pump; does anyone have more detailed procedures for normal shutdown and emergency shutdown? Please share them! I know the simple operation is just! 1. Reduce the rotational speed. 2. When the speed drops to around 3000, shut down the machine. There are several ways to do this: emergency stop via the control room, on-site emergency shutdown devices, emergency stop buttons, combined rapid shutdown systems, and 505 platform-based shutdown mechanisms. 3. Redirect the medium-pressure steam to the vent. 4. After reducing the pressure of the hydrogen circulation pump to a slight positive level, stop supplying the secondary seal gas as well as the primary seal gas; stop supplying lubricating oil once the bearing temperature drops to the ambient temperature, and also stop supplying isolation gas. 5. After shutdown, rotate the shaft. 6. When there is no steam or cooling water in the machine, turn off the steam seal extractor and close the drain valves of the machine. 7. Enhance the drainage of medium-pressure steam; close the manual valves for low-pressure and high-pressure systems. 8. Replace the nitrogen inside the hydrogen circulation pump’s housing! Regarding emergency shutdown, it refers to the situation where, in the face of an unexpected issue, the turbine is shut down immediately; once the fault is resolved, a hot start can be carried out in a short time. The subsequent steps are similar to those after a normal shutdown, only the shutdown happens more quickly! My eldest nephew knows so much already; I hope fellow sailors can supplement and improve on this information. Who has any materials that can provide a detailed account of the process?
Reply #22016-09-04
Normal shutdown: Click the normal shutdown button on the turbine speed control interface. Emergency shutdown: Simply press the emergency shutdown button on the control console or at the site
Reply #32016-09-04
We don’t have a normal shutdown button; instead, we first reduce the processing load and speed, and then shut down the machine!
Reply #42016-09-04
This afternoon I checked ours; there is a normal shutdown button on the speed control interface
Reply #52016-09-04
When at work, check if we have them – do we have any operating procedures for shutting down the equipment?

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