Nipawin Hospital

Lighting
The following table provides descriptions of the existing and proposed lighting conditions for different areas of the facility.

Steam Boiler Removal
Overview
A “Chromalox” 2-stage electric boiler (SB-2) with a capacity of 60kW which provide steam to a sterilizer. The boiler was supplying steam to two sterilizers, but one of them was replaced by a new stand alone electric sterilizer (Getinge M# 533HC, S# 08B-08372), so right now the boiler is oversized.

Scope
The existing sterilizer which is supplied by SB-2 will be replaced with an identical stand-alone “Getinge” model and steam boiler SB2 will be decommissioned.

Building Automation Upgrade
Overview
Currently a Honeywell DDC system and EBI controls the boilers, chiller, AHUs and fans. This system, in conjunction with new components detailed below, will be used to effect the following changes to the schedules and sequences.

AHU – S1 (Administration)
Overview
S-1 is a mixed air unit (approximately 30% outside air) with supply and return fans and dual ductwork system (hot and cold deck). Spray steam humidifiers are installed in both supply ductworks and the heating coil of the hot deck has a recirculation pump. Temperature sensors in each deck and 3-way valves control water flow through heating and cooling coils, while humidity sensors and 2-way valves control steam flow through humidifier. Individual thermostats control dampers of the mixing boxes. This unit with DDC controllers under the BAS is serving the administrative area. Current schedule is 6:00 to 22:00.

Scope
The schedule will be reviewed and tightened to match the area’s actual occupancy. Zone dampers and motion sensors will be installed in selected areas.

The supply fan (5hp, 208/3, 13 Amp) and return fan (1.5hp, 208/3, 4.5 Amp) will have new VFDs installed and set so return fan speed will track supply air fan speed. All necessary DDC controllers and points will be added.

AHU – S2 (Labs)
Overview
S-2 serving the Labs has a similar disposition that S-1 with approximately 35% minimum outside air. The unit is scheduled to run from 6:00 to 19:00, but it was still running after that time during the audit.

Scope
The schedule will be reviewed and tightened to match the area’s actual occupancy. This unit will be scheduled to run between 6:00am and 5:00pm, 7 d/w. All necessary DDC controllers and points will be added.

AHU – S3 (Kitchen)
Overview
S-3 serving the kitchen has similar disposition that S-1 except for the preheating coil installed before the supply fan. There is a recirculation pump serving this coil and a 3-way valve controlling water flow. During the audit OA was 45% of total air flow and the preheating coil was 20% dirty. The unit is scheduled to run from 6:00 to 20:00.

Scope
The supply fans will be interlocked with the exhaust hoods (if they are not already), and zone dampers and motion sensors will be installed in selected areas.

VFDs will be installed on the supply fan (10hp, 208/3, 23.8 Amp) and return fan (2hp, 208/3, 6.4 Amp). All necessary DDC controllers and points will be added.

AHU – S7 (O/R)
Overview
S-7 serving Operation Rooms, is a dedicated 100% outside air unit with supply and exhaust fans, and a glycol heat recovery system to preheat OA. There is a recirculation pump between the coils located in the exhaust and air intake ductwork, and two 3-way mixing valves that interconnect the heat recovery system with the glycol heating system (boilers 1 and 2). The heat recovery system is not working and the heat recovery coil in the air intake is 20% dirty because the first set of filters is missing. Another heating coil is installed before the supply fan and the unit also has the same dual ductwork configuration with humidifiers. Each heating coil is provided with a recirculation pump. This unit runs 24/7.

Scope
Zone dampers and motion sensors will be installed in the selected areas.

VFDs will be installed on the supply fan (10hp, 208/3, 23.8 Amp) and return fan (2hp, 208/3, 6.4 Amp). All necessary DDC controllers and points will be added.

AHU – S7 (O/R)
Overview
S-7 serving Operation Rooms, is a dedicated 100% outside air unit with supply and exhaust fans, and a glycol heat recovery system to preheat OA. There is a recirculation pump between the coils located in the exhaust and air intake ductwork, and two 3-way mixing valves that interconnect the heat recovery system with the glycol heating system (boilers 1 and 2). The heat recovery system is not working and the heat recovery coil in the air intake is 20% dirty because the first set of filters is missing. Another heating coil is installed before the supply fan and the unit also has the same dual ductwork configuration with humidifiers. Each heating coil is provided with a recirculation pump. This unit runs 24/7.

Scope
Zone dampers and motion sensors will be installed in the selected areas.

VFDs will be installed on the supply fan (15hp, 208/3, 39 Amp) and exhaust fan (5hp, 208/3, 14.8 Amp). The heat recovery coil does not work and will be re-commissioned. All necessary DDC controllers and points will be added.

AHU – S9 (Boiler Room)
Overview
S-9 is the make up air unit for the boiler room with a heating coil only

Scope
The unit will be re-commissioned and let cycle to minimize O/A.
 

Vending Machine Control
Overview
Cold beverages are available for purchase at this site from a single refrigerated beverage dispensing machine. It has self contained refrigeration and illumination that are currently running constantly, regardless of whether people are in the area to purchase beverages
.
Scope
A Vending Miser control will be implemented on refrigerated vending machines within the facility. It will be wall mounted and plugged into the receptacle providing power to the existing vending machine, and the vending machine will then be plugged into the Vending Miser receptacle. It can be relocated with the vending machine.

A passive infra-red sensor detects occupants and allows the machine to power down when the surrounding area is vacant. The device also monitors room temperature and vending machine compressor operation to automatically re-power the cooling system at one to three hour intervals to ensure that drinks remain cool. Savings result because the machine lighting is only on when the area is occupied, and the compressor does not short cycle, which increases the efficiency and life span of the compressor.
 

Building Envelope Sealing
Overview
An investigation to upgrade the current conditions of the building envelope was conducted by CANAM Building Envelope Specialist. The results of this investigation have uncovered several areas where the building envelope can be upgraded in order to reduce heating costs. Most of the areas where improvements may be made within the confines of the performance contract involve low cost sealing of identified cracks around doorways.

Scope
The scope of work detailed by CANAM recommends the weather sealing of 12 exterior doors and 1 interior door to the mechanical room.
 

Parking Plug Control
Overview
There are 33 duplex parking plugs, serving 66 parking stalls that are fully occupied during the winter months. There are currently no controls on these plugs.

Scope
IPLC controllers will be installed to replace 33 duplex receptacles and programmed to cycle 40% of the time when the temperature is between -5C and -15C, 70% of the time between -15C and -25C and 100% of the time when the temperature is -25C or colder.

Water Conservation Measures
Overview
Treated water is a carefully manufactured product, which appears in the facilities only after traveling through many miles of pipeline and lengthy treatment process. It’s a vulnerable resource that shouldn’t be wasted. Water savings can be realized through a variety of methods including low flow toilets as well as sink faucet moderators.

Scope
Water Matrix recommends that 65 toilets be upgraded to low flow models and 65 sink faucets be fitted with low flow aerators.

Backflow Prevention (VFA)
Overview
Backflow occurs when the water flows in the opposite direction from its normal flow. The cause of a backflow is a change in pressures. This reversed direction of water flow may allow contaminants to enter the drinking water system through cross-connections. Backflow Prevention is a strategy whereby a valve is placed in the domestic water supply line of a given facility in order to prevent contamination by pollutants due to ‘backflow’ in the system. Examples of testable backflow preventers used for medium to high hazard processes include: reduced-pressure principle assemblies, double-check valve assemblies and pressure vacuum breaker assemblies.

Scope
Backflow Prevention double-check valve assemblies will be installed in both the domestic and fire pump water supply pipes in order to comply with the 1995 National Building Code part 7.6.2.3 and CSA.Z317.1 Canadian Standards Association Special Requirements for Plumbing Installations in Health Care Facilities, Section 6.3.3.5.