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The Emergency Lubrication System is designed to provide lubrication for a duration of 30 minutes in the event of a loss of oil pressure in the Power Reduction Gear Box (PRGB). This duration is crucial because it allows enough time to maintain lubrication to critical components, reducing the risk of damage or failure due to loss of oil circulation. The 30-minute timeframe is a well-established safety protocol that balances the need for immediate operational performance with the limitations of the lubrication capacity available during an emergency. This ensures that if an oil pressure problem occurs, the system can sustain essential functions for a period long enough to facilitate a safe landing or to address the issue adequately before critical damage occurs.