Technology and Operations
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Compressed Air System IX
Posted by:
Scott
()
Date: January 01, 2002 05:12PM
Low Pressure (Exhaust Gas) Blow System
The exhaust gas blow system consists of a pipe extending forward from a point between the inboard and outboard main engine exhaust valves port and starboard, which is joined together and led forward to a manifold on the superstructure over the control room. There is a stop valve in the pipe to the manifold which serves as a main blow valve.
From the manifold, individual piping runs extend to MBT 1, FBT 3, FBT 4, each half of MBT 5, TO FBT 6, FBT 7 and MBT 8. The eight assciated valves at the manifold are normally open, although they are openable from within the control room.
Normal operation involves starting the main engines as soon as the vessel surfaces, and by throttling the exhaust gas line diverting all or a part of the exhaust gas via the main blow valve and the manifold to the tanks listed above, which are blown simultaneously when the main blow valves is opened. Pressure gauges in the engine room and at the main blow valve assist in controlling the exhaust gas pressure, which is not supposed to exceed 10 pis.
The exhaust gas blow system consists of a pipe extending forward from a point between the inboard and outboard main engine exhaust valves port and starboard, which is joined together and led forward to a manifold on the superstructure over the control room. There is a stop valve in the pipe to the manifold which serves as a main blow valve.
From the manifold, individual piping runs extend to MBT 1, FBT 3, FBT 4, each half of MBT 5, TO FBT 6, FBT 7 and MBT 8. The eight assciated valves at the manifold are normally open, although they are openable from within the control room.
Normal operation involves starting the main engines as soon as the vessel surfaces, and by throttling the exhaust gas line diverting all or a part of the exhaust gas via the main blow valve and the manifold to the tanks listed above, which are blown simultaneously when the main blow valves is opened. Pressure gauges in the engine room and at the main blow valve assist in controlling the exhaust gas pressure, which is not supposed to exceed 10 pis.
| Subject | Written By | Posted |
|---|---|---|
Compressed Air System IX
|
Scott | 01/01/2002 05:12PM |