A hospital operating theatre (OPTH) has two operating tables, TAB1, and TAB2. Each table and its associated support equipment and lighting draws 2.5KW of electrical power. The mains power circuit (MAINS) to the operating theatre can provide 6KW of power. There are two backup power systems in use: Each backup system (BACK1 and BACK2) is a self-contained photo voltaic system with an associated high capacity storage battery that can provide 4KW of electrical power. You can assume that each backup system can provide power indefinitely for the purposes of this assignment. Q1 - Draw a reliability block diagram for the OPTH where both operating tables are required. Use minimum backup system(s) consistent with OPTH power requirements. Q2 - Draw a reliability block diagram for the OPTH where only one operating table is required. Use minimum backup system(s) consistent with OPTH power requirements. The estimated failure rates of the various OPTH units are as below. All units are per million operating hours. UNIT Failure Rate Operating Table 119 Mains Power 41 PV Backup 67 An operation is scheduled to need one operating table. The expected duration of the operation is 2.5 hours. Q4 - What is the probability that the operation will be completed in this OPTH without a failure that would necessitate an emergency transfer to another OPTH? Q5 - Can you estimate the expected number of maintenance actions for each of the 2 units Operating Table and PV Backup over a period of a year with the Unit failure rates as above. You can assume that failed items will be repaired promptly. The OPTH Duty Cycle will be 75% (18 Hours per day) Calculate separate values for the 2 scenarios described in Q1 and Q2 above. A hospital operating theatre (OPTH) has two operating tables, TAB1, and TAB2. Each table and its associated support equipment and lighting draws 2.5KW of electrical power. The mains power circuit (MAINS) to the operating theatre can provide 6KW of power. There are two backup power systems in use: Each backup system (BACK1 and BACK2) is a self-contained photo voltaic system with an associated high capacity storage battery that can provide 4KW of electrical power. You can assume that each backup system can provide power indefinitely for the purposes of this assignment. Q1 - Draw a reliability block diagram for the OPTH where both operating tables are required. Use minimum backup system(s) consistent with OPTH power requirements. Q2 - Draw a reliability block diagram for the OPTH where only one operating table is required. Use minimum backup system(s) consistent with OPTH power requirements. The estimated failure rates of the various OPTH units are as below. All units are per million operating hours. UNIT Failure Rate Operating Table 119 Mains Power 41 PV Backup 67 An operation is scheduled to need one operating table. The expected duration of the operation is 2.5 hours. Q4 - What is the probability that the operation will be completed in this OPTH without a failure that would necessitate an emergency transfer to another OPTH? Q5 - Can you estimate the expected number of maintenance actions for each of the 2 units Operating Table and PV Backup over a period of a year with the Unit failure rates as above. You can assume that failed items will be repaired promptly. The OPTH Duty Cycle will be 75% (18 Hours per day) Calculate separate values for the 2 scenarios described in Q1 and Q2 above
