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 2009<br />
9.1.4 Main Gas Circuit<br />
Fig 4 Main Gas Circuit<br />
On initial start up the booster automatically charges itself with gas from the Volume<br />
Tank by opening a solenoid valve, which bypasses gas back past the outlet check<br />
valve. A dome-loaded regulator is connected between the machine outlet <strong>and</strong> inlet. Its<br />
outlet is set 1 bar below the BPR Loader pressure, hence the booster will circulate gas<br />
around this loop keeping itself in equilibrium <strong>and</strong> maintaining the system, after the<br />
Reprocessing Unit BPR, at a pressure 1 bar below the setting on the BPR loader in<br />
dive control.<br />
When a diver goes onto recovery the recovered gas flows from the Reprocessing Unit<br />
to the booster inlet. Due to this additional gas, the flow from the bypass regulator is<br />
reduced as the booster compresses this additional gas <strong>and</strong> delivers it to the Volume<br />
Tank. Hence it can be seen that the plant can automatically compensate for any<br />
variation in the inlet flow rate due to a diver’s work rate keeping itself in equilibrium.<br />
Chap 9 Page 101 of 168 OM002 Rev 5
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