Recommendations and Implementation
- The EXISTING Main 15KV switchgear should be replaced with a new line up of sheltered-aisle- 15KV switchgear with adequate distribution breakers for future loads.
- This new switchgear shall be located in the same location as was the existing gear.
- Equipment and working clearances should be maintained per National Electric Code (NEC)
- Existing exterior vault enclosure and canopy may need to be revised
- Spare ducts and/or new ducts may be needed from the switchgear line- up running east in the area north of the Heating/Chilling Center and then north under Highway 54/57 to the main campus area north of the highway. New utility corridors/tunnels should be established to facilitate the expansion of utility services without interfering with future premium campus growth areas.
- Corridors need to be utilized and adhered to at all times rather than taking the shortest route from one point to another; thus maintaining proper clearances around future building sites
- Provide new 15 KV switches along the utility corridors, at locations that facilitate the extension of feeders to new construction areas of the campus
- The basic multiple loop system shall be continued for all services to new buildings.
- Existing radial fed buildings can be revised into the loop system during major renovations of those facilities and/or their services
- Conduct a Coordination, Short Circuit and Arc Flash study on the entire primary and secondary services
- Information provided will be useful in sizing fuses and current relays to coordinate with utility as well as internally
Power Distribution (Normal Power):
- Main disconnects should be added at the secondary side of the service trans-formers of Rose and Wood Halls to meet NEC
- New buildings are to have exterior pad mounted or interior vault type service transformers, depending upon project budget, interior and exterior space limitations.
- Spare service conduits shall be provided as feasible
- Main circuit breakers or fused switches shall be provided
- Transient Voltage Surge Suppression units shall be installed at main distribution switchboards and panel boards.
Power Distribution (Emergency Power):
- New buildings are to have stand-by emergency generators installed in separate, ﬁre rated rooms, or on the exterior of the building with the appropriate visual and sound screening.
- Two transfer switches to be provided; one for life safety egress lighting and the other for critical equipment and devices.
- The IS building should have its’ own dedicated emergency generator
Uninterruptible Power Systems:
- The electrical distribution of the campus network UPS and the WPNE UPS at the IS building should be updated.
- Larger UPS units should be installed, rather than many small units
- For easier maintenance, the entire system should have the minimal amount of main disconnects
Site Roadway, Pathway, and Parking Lighting:
- All new pole top ﬁxtures to be Metal Halide or High Pressure Sodium, cut-off type luminaries. Reference ANSI/IES RP-8 and RP-20.
- All site lighting wiring is recommended to be in conduit and over sized for volt-age drop
- Higher voltages, 480V, 277V and 208V to be utilized for site lighting systems
Central Heating/Cooling Plant:
- Any new construction should be connected to the tunnel system
- The physical condition of the tunnel is good, although repairs are needed at the manholes and at a section of the tunnel under Highway 54/57•
- The tunnel has ﬂooded approximately three times in the past, and the chilled water insulation in the tunnel needs to be replaced or repaired
- Insulation replacement by means of a payback has been reviewed in the past with negative results. With the increased cost of energy a revised evaluation is necessary
- The insulation is still wet in sections of the tunnel, therefore deterioration of the exterior of the pipe may occur
- It is recommended that a back-up water pumping system be reviewed or that the pumps be monitored for failure to keep tunnel dry•
- The main distribution piping is adequately sized for future buildings at the south and west end of campus
- The east side of campus has been extended from the capped main at the lower southeast corner of the tunnel system
- This piping is direct buried using the shortest route
- Consideration should be made in the future that the main tunnel distribution system be extended and that the concept of extending underground direct buried piping not be continued for cost reasons
- Utility corridors should be established to avoid having to move piping in the future
- The ﬁrst issue with an east side tunnel extension will be The Union project. The existing utilities serving the Commons are at maximum capacity.
- The potential exists for a future co-generation use at the Central Plant
- Space should be maintained in this building for this potential use
- Steam from this co-generation system can be used for year-around campus steam needs and in the summer for the steam turbine or future third chiller
- This future third chiller could be an absorber type chiller
- The electrical distribution for the campus is located adjacent to the Central Plant, so electrical generation use is very viable.
- The chilled water system is in very good condition and the existing pump and distribution pipe size allows for 50 percent future capacity expansion
- The 150hp primary pump should be replaced with a larger pump to allow for full load back-up and expansion of the system
- The campus should either use the 725 ton steam turbine chiller or replace it with a third chiller to provide back-up capacity for campus use.
- Currently, the campus will need both electric chillers running at over 90 per-cent capacity on a peak day
- Operating the steam turbine would reduce electrical demand usage at peak load and have an energy payback. The cost of repairs/upkeep of the system would need to be included in the study. The new “summer” boilers will allow for the capacity to operate this steam turbine
- A second cooling tower is required to operate three chillers
- The past use of demand limiting should not be reconvened as it will cause long term damage to buildings ﬁnishes
- Compressed Air:
- A compressed air system has adequate capacity for future expansion
- The future need of compressed air for the temperature control system will be reduced
- Future control systems will probably utilize electric valves, and damper operators and direct digital controllers
- A steam system and distribution piping is in excellent shape and the only con-cern is the size and effciency of current equipment.
- The summer boiler is slated to be replaced by multiple higher effciency boilers in 2005
- Replacement of the distribution condensate pumps from each of the buildings back to the physical plant should be continued
- The city water system should have a pipe extended at the south end of campus from the existing abandoned 12” meter pit at the southwest corner to the 10” meter pit at the southeast corner
- This will provide a complete loop around the campus for water distribution, reduce pressure loss and maintain better ﬂow through the dead-ended condition at the south-west meter pit
- A water ﬂow study should be commissioned to review the potential connection to the high pressure city water pipe
- Campus should also use a minimum 6” pipe for future buildings and for replacement of water lines into existing buildings
- The 6” size will accommodate future ﬁ re protection use
Storm and Sanitary:
- The storm and sanitary piping systems are in good condition and able to be connected onto for future buildings
- Conduct all relevant studies for further information on speciﬁc aspects of campus utilities
- Use separate studies as reference to the Master Plan.