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OPERATING THE HIGH-PRESSURE AIR SYSTEM |
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A. RIGGING THE HIGH-PRESSURE MANIFOLD FOR DIVING |
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(Figure 7-1) |
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7A1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
3. Open the regulator valves to the
safety, negative, and bow buoyancy tanks.
4. Open the high-pressure air stop valves
in each torpedo room.
7A2. Steps in operation.
1. Open the No. 2 air bank stop valve on
the receiving manifold.
2. Open the No. 3 air bank stop valve on
the receiving manifold.
3. Open the No. 4 air bank stop valve on
the receiving manifold
(There should be at least three air banks
on the manifold when rigged for dive. An air
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bank with a gage reading of less than 1500
psi should not be placed in service. The No.
1 air bank, because it is located inside the
pressure hull, is normally held in reserve.)
4. Open the high-pressure air service
forward supply valve on the lower distributing
manifold.
5. Open the high-pressure air service aft
supply valve on the lower distributing manifold.
6. Open the high-pressure air supply
valves to 225-pound reducers.
7. Open the supply valve to 600-pound
MBT blow manifold on the upper distributing
manifold.
8. Open the emergency supply valve to
600-pound MBT blow manifold on the upper
distributing manifold. The high-pressure air
manifold is now rigged for diving.
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Figure 7-1. RIGGING THE HIGH-PRESSURE MANIFOLD FOR DIVING.
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B. BLOWING THE BOW BUOYANCY TANK |
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(Figure 7-2) |
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7B1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
3. Open the regulator valves to the safety,
negative, and bow buoyancy tanks.
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7B2. Steps in operation.
1. Open the No. 5 air bank stop valve on
the receiving manifold.
2. Open the bow buoyancy blow valve on
the upper distributing manifold.
3. When blowing is completed, shut the
bow buoyancy blow valve.
4. Shut the No. 5 air bank stop valve on
the receiving manifold.
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Figure 7-2. BLOWING THE BOW BUOYANCY TANK.
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C. BLOWING THE SAFETY TANK |
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(Figure 7-3) |
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7C1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves on
all the air banks.
3. Open the regulator valves to safety,
negative, and bow buoyancy tanks.
7C2. Steps in operation.
1. Open the No. 1 air bank stop valve on
the receiving manifold.
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2. Open the safety tank blow valve on the
upper distributing manifold. Observe the
safety tank pressure gage in order not to
exceed the required pressure.
3. When blowing is completed, shut the
safety tank blow valve.
4. Shut the No. 1 air bank stop valve on
the receiving manifold.
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Figure 7-3. BLOWING THE SAFETY TANK.
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D. BLOWING THE NEGATIVE TANK |
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(Figure 7-4) |
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7D1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves on
all the air banks.
3. Open the regulator valves to the safety,
negative, and bow buoyancy tanks.
7D2. Steps in operation.
1. Open the No. 3 air bank stop valve
on the receiving manifold.
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2. Open the negative tank blow valve on
the upper distributing manifold. Observe the
negative tank pressure gage in order not to
exceed the required pressure.
3. When blowing is completed, shut the
negative tank blow valve.
4. Shut the No. 3 air bank stop valve on
the receiving manifold.
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Figure 7-4. BLOWING THE NEGATIVE TANK.
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E. RIGGING FOR SURFACE FROM RIGGED FOR DIVE |
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(Figure 7-5) |
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7E1. Preparation.
1. The high-pressure manifold is rigged
for dive with air banks Nos. 2, 3, and 4 on
service. (See Section 7A.)
2. Open the bulkhead bank stop valves on
all the air banks.
3. Open the regulator valves to the safety,
negative, and bow buoyancy tanks.
4. Open the high-pressure air stop valves
in each torpedo room.
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7E2. Steps in operation.
1. Shut the No. 2 air bank stop valve on
the receiving manifold.
2. Shut the No. 3 air bank stop valve on
the receiving manifold.
3. Shut the supply valve to the 600-pound
MBT blow manifold.
4. Shut the emergency supply valve to
the 600-pound MBT blow manifold.
The high-pressure air manifold is now
rigged for surface. Note that air bank No. 4
remains on service.
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Figure 7-5. RIGGING FOR SURFACE FROM RIGGED FOR DIVE.
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F. CHARGING THE NO. 1 TORPEDO IMPULSE FLASK |
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(Figure 7-6) |
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7F1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
3. Shut the high-pressure air stop valves
in each torpedo room.
7F2. Steps in operation.
1. Open the No. 4 air bank stop valve on
the receiving manifold.
2. Open the high-pressure air service
forward supply valve on the lower distributing
manifold.
3. Open the high-pressure air stop valve
in the forward torpedo room.
4. Open the high-pressure air supply
valve to the 600-pound reducer (impulse
charging).
5. Open the supply valve from the 600-pound
reducer to the impulse flask charging
manifold.
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6. Open the No. 1 impulse charging valve
on the impulse charging manifold, starboard
side of the forward torpedo room. Observe
the No. 1 impulse flask pressure gage in order
not to exceed the required pressure.
7. When the required pressure has been
reached, shut the No. 1 impulse charging
valve on the impulse charging manifold.
8. Shut the supply valve from the 600-pound
reducer to the impulse flask charging
manifold.
9. Shut the high-pressure air supply
valve to the 600-pound reducer (impulse
charging).
10. Shut the high-pressure air stop valve
in the forward torpedo room.
11. Shut the high-pressure air service
forward supply valve on the lower distributing
manifold.
12. Shut the No. 4 air bank stop valve on
the receiving manifold.
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Figure 7-6. CHARGING THE NO. 1 TORPEDO IMPULSE FLASK.
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G. CHARGING THE NO. 1 AIR BANK WITH
THE NO. 1 AIR COMPRESSOR
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(Figure 7-7) |
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7G1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
7G2. Steps in operation.
1. Open the No. 1 air bank stop valve on
the receiving manifold.
2. Open the supply valve, high-pressure
air from compressors, on the receiving manifold.
3. Open the No. 1 high-pressure air compressor
charging valve, in the pump room.
4. Start the No. 1 high-pressure air
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compressor. Carry out the operating routine for
drains, pressures, temperatures, circulating
water, lubrication, and speed. (See Section
2C.)
5. Stop the No. 1 high-pressure air compressor
when the pressure gage for the No. 1
air bank shows that the required pressure has
been reached.
6. Shut the No. 1 high-pressure air compressor,
charging valve.
7. Shut the supply valve, high-pressure
air from compressors, on the receiving manifold.
8. Shut the No. 1 air bank stop valve on
the receiving manifold.
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47
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Figure 7-7. CHARGING THE NO. 1 AIR BANK WITH THE NO. 1 AIR COMPRESSOR.
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H. CHARGING THE NO. 2 AIR BANK FROM THE DOCK |
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(Figure 7-8) |
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7H1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
7H2. Steps in operation.
1. Open the drain cock on the external
charging stop valve on the overhead above the
high-pressure manifold in the control room.
(This is a safety precaution which releases
high-pressure air trapped between the valve
and the cap.)
2. Remove the charging connection caps
and connect the flexible copper high-pressure
tubing to the dock connection and to the port
external charging connection. As a safety
measure, secure the tubing with a line to the
dock and on the ship. This will prevent whipping
in the event that the tubing breaks.
3. Shut the drain cock.
4. Open the external charging stop valve
on the overhead above the high-pressure manifold.
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5. Open the external charging connection
valve on the receiving manifold.
6. Open the No. 2 air bank stop valve on
the receiving manifold.
7. Open the charging valve on the dock.
8. Shut the charging valve on the dock
when the pressure gage for the No. 2 air bank
shows that the required pressure has been
reached.
9. Shut the external charging stop valve.
10. Shut the external charging connection
valve on the receiving manifold.
11. Shut the No. 2 air bank stop valve on
the receiving manifold.
12. Open the drain cock and release the
pressure in the charging tubing.
13. Disconnect the copper charging tubing
and replace the caps on the port external
charging connection and on the dock connection.
14. Shut the drain cock on the external
charging stop valve.
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48
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Figure 7-8. CHARGING THE NO. 2 AIR BANK FROM THE DOCK.
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I. CHARGING THE HYDRAULIC ACCUMULATOR AIR FLASK
WITH HIGH-PRESSURE AIR |
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(Figure 7-9) |
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7I1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Open the bulkhead bank stop valves
on all the air banks.
7I2. Steps in operation.
1. Open the No. 2 air bank stop valve on
the receiving manifold.
2. Open the accumulator air flask charging
valve on the hydraulic accumulator charging manifold.
3. Open the air valve to the hydraulic
accumulator on the upper distributing
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manifold. Observe the accumulator air flask pressure
gage in order not to exceed the accumulator
air flask pressure.
4. When the required pressure has been
reached, shut the air valve to the hydraulic
accumulator on the upper distributing manifold.
5. Shut the accumulator air flask charging
valve on the hydraulic accumulator charging manifold.
6. Shut the No. 2 air bank stop valve on
the receiving manifold.
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Figure 7-9. CHARGING THE HYDRAULIC ACCUMULATOR AIR FLASK WITH HIGH-PRESSURE AIR.
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J. BYPASSING HIGH-PRESSURE AIR INTO THE 225-POUND
SERVICE AIR SYSTEM
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(Figure 7-10) |
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7J1. Preparation.
1. Shut all valves on the high-pressure
manifold.
2. Shut all the bulkhead bank stop valves.
3. Shut the forward and after stop valves
for the No. 1 air bank. Only the after part of
the No. 1 air bank will be used for this operation.
7J2. Steps in operation.
1. Open the No. 1 air bank after cutoff
valve.
2. Open the No. 1 air bank stop valve on
the receiving manifold.
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3. Open slowly the 225-pound bypass
valve on the lower distributing manifold.
Observe the pressure gage for the 225-pound
service air manifold in order not to exceed
the 225-pound system pressure.
4. When the required pressure has been
reached, shut the 225-pound bypass valve on
the lower distributing manifold.
5. Shut the No. 1 air bank stop valve on
the receiving manifold.
6. Shut the No. 1 air bank after cutoff
valve.
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Figure 7-10. BYPASSING HIGH-PRESSURE AIR INTO THE 225-POUND SERVICE AIR SYSTEM.
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