UTILITIES DEPARTMENT NORTH CAMPUS DISASTER RECOVERY PLAN

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1 Page 1 of 27 UTILITIES DEPARTMENT NORTH CAMPUS DISASTER RECOVERY PLAN

2 Page 2 of 27 Table of Contents 1. OBJECTIVE SCOPE COMMUNICATION LOSS OF NATURAL GAS SUPPLY LOSS OF STEAM LOSS OF CHILLED WATER LOSS OF DOMESTIC WATER LOSS OF ELECTRICAL POWER LOSS OF COMPRESSED AIR DEMINERALIZED WATER SUPPLY WEATHER RELATED EMERGENCY Appendix 1 Diesel Fuel Supply Diesel Fuel Supplier Diesel Generator Fuel Consumption Boiler Steam Generation on Diesel Fuel Appendix 2 Heating Plant Emergency Water Supply Ambient temperature -35 C and different condensate return conditions Water Endurance: Appendix 3 Electrical Supply (Winter) Appendix 4 Electrical Supply (Summer)... 16

3 Page 3 of Appendix 5 Greater Campus Area Building Priority List... 18

4 Page 4 of OBJECTIVE To inform all customers in the Greater Campus Area (GCA) of the disaster recovery plans for the Department, in the event of loss of all or part of utility services. During the recovery stages the primary goal of utility supplies will be to maintain the integrity of the basic building infrastructure. 2. SCOPE This plan is designed to react to interruptions in the supply chain and the recovery is predicated on the availability of working utility facilities. Customers must ensure that they have their own backup plans for critical equipment, should recovery of one or more utility services not be successful. The response of the Department may differ from that outlined in this document due to operational considerations. 3. COMMUNICATION The Department will ensure that close and timely communication is maintained with the Communications Control Centre (CCC) and all other control centres in the GCA, for either full or partial loss of any Utility Service.

5 Page 5 of LOSS OF NATURAL GAS SUPPLY If the natural gas supply to the GCA is lost, the Heating Plant boilers will shut down. The boilers will be restarted using diesel fuel. The Heating Plant maintains a supply of diesel fuel on site and has contracts in place, which guarantee delivery of diesel fuel from an external supplier. With scheduled deliveries of fuel, the Heating Plant can supply steam to the GCA indefinitely without natural gas. See Appendix 1 for Diesel Fuel Supply Calculations. 5. LOSS OF STEAM The total or partial loss of steam to the GCA will result in the loss of heating systems in the GCA. The Heating Plant Control Centre will notify Communications Control Centre (CCC) and all other control centers in the GCA and request they shed their heating load. The Communications Control Centre (CCC) shall utilize their steam load shedding procedure. 6. LOSS OF CHILLED WATER A total loss of chilled water supply to GCA will result in the loss of cooling systems in the GCA. The Cooling Plant Control Centre will advise Communications Control Centre (CCC) and all other control centers for customers in the GCA to switch to backup systems immediately. A partial loss of chilled water supply to campus will result in the Cooling Plant Control Centre initiating the Chilled Water Load Shedding Procedure.

6 Page 6 of LOSS OF DOMESTIC WATER If domestic water supply is lost, all buildings in the GCA will be without fire protection, washroom facilities and drinking water. The Cooling Plant Control Centre will notify the Mechanical standby person and subsequently advise all customers in the GCA of the situation. Make-up water to the boilers will no longer be available. A back-up system will be placed into service and will provide make-up to the boilers. Provided that power is available on campus and the Heating Plant is receiving condensate returns back from campus, operations could be sustained for approximately 367 hours at an ambient temperature of -35 C. See Appendix 2 for Emergency Water Supply Calculations. 8. LOSS OF ELECTRICAL POWER If the external electrical supply to the GCA is lost, the following will occur: 1) All Heating Plant and Cooling plant equipment will be initially shutdown. The U of A will be isolated from EPCOR on all six feeders. The GCA will not have power. 2) The U of A electrical grid will be separated into two islands, the North Switching Station (NSS) and the Heating Plant. The South Switching Station (SSS) will be out of service. 3) Diesel generators will restore power to the Heating Plant and separate from the 13.8 kv distribution system at the South Switching Station. The 15 KV breakers that supply the Heating Plant will be opened, racked and locked out in their cells.

7 Page 7 of 27 4) The buildings in the GCA that are electrically self-sustaining as well as other selected buildings will remain disconnected from the U of A distribution system. See Appendix 5 for the Greater Campus Area Building Priority List. 5) Generation from STG-2 will be re-established once back up cooling water systems are operational. 6) STG-2 will power the North Switching Station (NSS) and the Cooling Plant. The diesel generators will power the Heating Plant. 7) Electrical distribution system will have to be checked and verified by the High Voltage electricians and load transfer arrangements reset where necessary. STG-1 cannot be restarted until sufficient heating load has been established to permit the operation of the turbine/generator in back pressure control mode. It is anticipated that during cold weather this heating load would initially be provided by the Walter C. Mackenzie Hospital, since it will be operational with its own power. Heating loads are weather dependent so available power output is unpredictable. Once the building heating load reaches approximately 50 t/hr, the SSS can be energized by the NSS; STG-1 will be started and synchronized with the NSS and STG-2. The NSS and SSS will now be tied together and STG-2 will feed the NSS while STG-1 will feed the SSS. The Heating Plant will continue to operate as an island powered by the diesel generators. Electrical service to campus buildings will be re-established according to the priority table listed in Appendix 5. During this process, close communication must be maintained between Electrical, Heating Plant Control Centre and Communications Control Centre to ensure STG-2 is not overloaded. This will be completed one building at a time based upon the Appendix 5 Greater

8 Page 8 of 27 Campus Area Building Priority List.. See Appendix 3 and 4 for power rotation schedule. Once the external electrical supply from EPCOR is available, EPCOR can be synchronized with the U of A grid (NSS/SSS) at the NSS synchronization control panel. When external electrical supply has been re-established and proven to be reliable, the DG s can be switched to Automatic Synchronization mode to allow the DG s and the Heating Plant to be synchronized with the SSS. The Heating Plant Distributed Control System (DCS) has approximately 2 hours of battery backup available and will ultimately be powered by the DG s. The Service Corridor DCS has approximately 2 hours of battery backup available and will ultimately be powered by STG-2 as an essential load. 9. LOSS OF COMPRESSED AIR Loss of compressed air to the GCA would be due to a loss of electrical power and/or a loss of cooling water. Compressed air is critical for operating equipment in the utility plants and all the buildings in the GCA. With the diesel generators in service and a cooling water supply for the air compressors, the units would be restarted.

9 Page 9 of DEMINERALIZED WATER SUPPLY Demineralized water provided to Campus facilities is boiler feed water that is surplus to Heating Plant requirements. Demineralized water supply to all facilities will be terminated in order to ensure sufficient supply for boiler operations during a Heating Plant emergency. The Heating Plant Control Centre will advise Communications Control Centre (CCC) and all other control centers in the GCA that this service is not available until further notice. 11. WEATHER RELATED EMERGENCY A severe weather event could make access to the plant very difficult. Plans would be made at that time for personnel and supplies to be on hand to sustain operations for an extended period of time.

10 Page 10 of Appendix 1 Diesel Fuel Supply 12.1.Diesel Fuel Supplier On annual contract to Hughes Petroleum Guaranteed delivery is part of contract. Supplier can draw from 3 local refineries Supplier runs a fleet of 7 delivery trucks. Supplier provides 4 emergency (after hours) contacts for fuel deliveries anytime. All calculations use a design basis of 250,000 kg/hr steam load. Emergency Fuel Storage at design basis: Plant Diesel Storage 2 tanks x 113,500 L = 227,000 L Typical Natural Gas Heating Value GJ/m 3 Typical Fuel Oil Heating Value GJ/L High plant load fuel ratio 3.5 GJ/Mg Fuel consumption rate at max load 1,316 GJ/h 31,584 GJ/day Natural Gas 35,140 m 3 /h 843,360 m 3 /day Fuel Oil 34,271 L/h 822,504 L/day

11 Page 11 of 27 Fuel Oil Endurance at design basis: STG-1, STG-2 DG s and max heat load STG-1, STG-2 and max heat load STG-1, DG s and max heat load STG-1 and max heat load 5.14 hours 5.30 hours 7.61 hours 7.97ours 12.2.Diesel Generator Fuel Consumption #1 Diesel Generator at MVA burns 360 L/h #2 Diesel Generator at MVA burns 360 L/h #3 Diesel Generator at MVA burns 360 L/h 5.625A 1,080 L/h 12.3.Boiler Steam Generation on Diesel Fuel At the design basis heating load: Boiler natural gas flow is 23,367 m3/h Equivalent diesel fuel usage 22,786 L/h or 546,875 L/day

12 Page 12 of Appendix 2 Heating Plant Emergency Water Supply 13.1.Ambient temperature -35 C and different condensate return conditions. WATER STORAGE: At Heating Plant (279 m 3 ) At Cooling Plant (284 m 3 ) From TESS (19,000 m 3 ) (19,563 m 3 ) Total Storage: 19,563,000 kg of water. Design Basis: Plant steam load = 250,000 kg/h to campus Make-up to plant 20% of steam load = 50,000 kg/h 13.2.Water Endurance: Full condensate returns (1 hr. added for plant storage) No condensate return & emergency steam 392 hours 158 hours Note: Emergency steam load calculated at 125,500 kg/h based on reduced temperatures for all buildings set by the Communications Control Center (CCC).

13 Page 13 of 27 NOTE: The operation of Steam Turbine generator #2 does NOT reduce the water endurance time since all steam used is condensed and recycled. TESS volume available is estimated to be 19,000 m3 (5,000,000 US gal for calculation purposes) Heating Plant Demineralized water storage tank volume taken at the 60% full level which will be the minimum operating level. The heating plant water storage also includes the emergency water storage tank.

14 Page 14 of Appendix 3 Electrical Supply (Winter) WINTER OPERATION - November 1 to March 31 Winter Electrical Demand Subtract Self Generation: University Hospital Cross Cancer Institute Kaye Edmonton Clinic Aberhart Centre Remaining Campus Load to Service 53.8 MVA 6.0 MVA 0.4 MVA 1.0 MVA 0.3 MVA 46.1 MVA STG-2 available generation Subtract Essential Loads: Heating Plant (DG s) Cooling Plant Utility Services Corridor Students' Union Building Education South Cooling Plant on Campus (CPOC) Thermal Energy Storage (TESS) Canadian Blood Services Cross Cancer Institute 30.6 MVA 0 MVA 1.80 MVA 0.62 MVA 1.03 MVA 0.49 MVA 0.44 MVA 0.14 MVA 0.30 MVA 1.50 MVA Power Available to Non-essential MVA

15 Page 15 of 27 The winter electrical demand exceeds the available winter generation therefore not all customers will have power. The available generation from STG-2 will make it possible to maintain chilled water supply to the Heating Plant only. The Heating Plant will be maintained by the diesel generators until the EPCOR service is restored. Electrical will be capable of maintaining power to all Priority 1 Buildings. All other priorities will be rotated in three groups of four-hour intervals (i.e. 4 hours with power then 8 hours without power). This is assuming the buildings are at lowest possible power usage. Once power is established per the priority sequence in Appendix 5, Communications Control Centre will have control of heating load and building electrical loading. The lower the electrical loading of each of the buildings, the more buildings will be able to be brought on line.

16 Page 16 of Appendix 4 Electrical Supply (Summer) SUMMER OPERATION - April 1 to October 31 Summer Electrical Demand (not including chilled water production) Subtract Self Generation: University Hospital Cross Cancer Institute Kaye Edmonton Clinic Aberhart Centre Remaining Campus Load to Service 47 MVA 6.0 MVA 0.4 MVA 1.0 MVA 0.3 MVA 39.3 MVA STG-2 available generation Subtract Essential Loads: Heating Plant (DG s) Cooling Plant Utility Services Corridor Students' Union Building Education South Cooling Plant on Campus (CPOC) Thermal Energy Storage (TESS) Canadian Blood Services Cross Cancer Institute 23.4 MVA 0 MVA 1.80 MVA 0.62 MVA 1.03 MVA 0.49 MVA 0.44 MVA 0.14 MVA 0.30 MVA 1.50 MVA Power Available to Non-essential MVA

17 Page 17 of 27 The summer electrical demand exceeds the available summer generation therefore not all customers will have power. The available generation from STG-2 will make it possible to maintain chilled water production to supply the Heating Plant only. The Heating Plant will be powered by the DG s until the EPCOR electrical grid is restored. Electrical will be capable of maintaining power to all Priority 1 Buildings only. All other priorities will not receive power. This is assuming the buildings are at lowest possible power usage. Once power is established per the priority sequence in Appendix 5, Communications Control Centre will have control of building electrical loading. The lower the electrical loading of each of the buildings, the more buildings will be able to be brought on line.

18 Page 18 of Appendix 5 Greater Campus Area Building Priority List These loading values in this list have been created using monthly recorded kva peak values for metering from June 2010 through June Shown below are the lowest peak kva and highest peak kva metered values. Actual building loading will NOT be the same as the information provided below. Actual switching operations of buildings must be based on loading on the system and carefully monitored to ensure generators are not overloaded. Notes: 1. All Buildings in Appendix 5 shall be powered based on available system power. 2. Loading analysis in 2012 revealed that Electrical will be capable of maintaining power to all Priority 1 buildings. See Appendix 3 and 4 for rotation schedule.

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