Gasmizer Manual - Submarine Manufacturing and Products Ltd
Gasmizer Manual - Submarine Manufacturing and Products Ltd
Gasmizer Manual - Submarine Manufacturing and Products Ltd
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March 09<br />
1.2.3 During normal operation, the oxygen used by divers is replaced by a metered oxygen<br />
flow into the system. This oxygen flow together with all other aspects of system operation, may<br />
be monitored by the dive supervisor at the control console. In the event of interruption of the gas<br />
supply from the Reprocessing Unit, the supervisor is immediately informed by means of an<br />
indicator but the divers’ gas supply is maintained from the heliox gas bank via regulators first on<br />
the make up panel <strong>and</strong> subsequently on the bell gas supply console.<br />
1.2.4 The system may be broken down into the following sections:<br />
1.3 Diver Equipment<br />
1. Diver Equipment<br />
2. Bell Exhaust Equipment<br />
3. Reprocessing Unit<br />
4. Electric Gas Booster<br />
5. Gas Storage <strong>and</strong> Supply<br />
6. Control Console<br />
1.3.1 The photograph below shows the diver equipment required for the exhaust system.<br />
The modifications required are:<br />
1. Fitting the Jewel 601 valve to pass the exhaled gas into the exhaust umbilical.<br />
2. Replacement of the dem<strong>and</strong> regulator by the ULTRAFLOW regulator which<br />
although, in appearance, similar to a conventional dem<strong>and</strong> regulator, has superior<br />
breathing characteristics.<br />
Fig 2<br />
Ultrajewel Helmet<br />
1.4 Bell Exhaust Equipment<br />
1.4.1 The diver exhaust umbilical carries gas from the Reclaim Valve back to the Supply<br />
Actuated Exhaust Cut-Off (SAECO) valve in the bell. This valve is held open by the gas<br />
pressure in the gas supply line. In the event of loss of pressure in the supply line, the SAECO<br />
valve will close, isolating the Reclaim Valve from suction.<br />
1.4.2 In normal operation, exhaust gas passes next to a transparent plastic water trap, which<br />
removes any bulk moisture which may be present. The design of this water trap is such that it<br />
may be drained without taking the system off line. From the water trap, gas passes through a<br />
back pressure regulator, which maintains the exhaust umbilical pressure at an optimum level,<br />
giving minimum breathing resistance to the diver. A tracking system is provided such that the<br />
OM002 Rev 5 Page 4 of 168 Chap 1
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