Appendix D
Outline Emergency Response Plan
					Both Power and Pump Fail
					Signals transmitted to the Cheung Chau STW by telemetry
			Is/Are the Upstream Pumping Station(s) Shutdown Automatically?		Mobilise the Mobile Team of DSD/ST2
	No		Yes
	Shutdown the Upstream Pumping Station(s)		Monitor the Situation		Upon Arrival, Investigate the Cause of Failure
			The Pumping Station Resumes to Normal Operation		Possible to Divert Sewage Directly to the Downstream Rising Mains?
					Yes		No
					Divert Sewage Directly to the Downstream Rising Mains Using Portable Pumps		Possible to Carry Out Emergency Repairs?
							Yes		No
					The Sewerage System Resumes to Normal Service		Carry Out the Emergency Repairs (e.g. Replacement of Submersible Pumps)		Inform EPD and AFCD for Potential Occurrence of Emergency Overflow
					Carry Out the Emergency Repairs or Arrange Subsequent Repair Works		If the Pumping Station Resumes to Normal Operation within 24 Hours*		Arrange Subsequent Repairing Works
							Yes		No
					The Pumping Station Resumes to Normal Operation				Arrange Emergency Overflow (i.e. ensure the overflow pipe is uncapped)
					Return the Sewage Flows to the Pumping Station		No Overflow Occurs		Inform EPD and AFCD for the Emgerency Overflow
					No Overflow Occurs				Overflow Occurs After 24 Hour*
									Carry Out Repair Works
									The Pumping Station Resumes to Normal Operation
									Close the Penstock of the Overflow Pipe
									No Overflow Occurs
Note:	* The 24 hours count from the signals received at the Cheung Chau STW.
	Condition
	Event / Outcome
	Action taken by the operator in the Cheung Chau STW
	Action taken by the Moblie Team of ST2/DSD (Provisionally, the team will be stationed in Cheung Chau STW.)