Project Profiles

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

The Atherton hospital is located in the centre of the Atherton Tablelands in Far North Queensland. During 2003 Queensland Health started a project to refurbish the hospital and add new facilities. Stage one of the refurbishment included a new dialysis unit in the old laundry building. The existing maternity unit was completely redeveloped. In one of the existing buildings and a small new building was added to provide additional space.

Through the head building contractor Jackson & Jackson was selected to carry out the mechanical services and electrical services contracts. The mechanical services contract involved some minor alterations to the existing building, mechanical services for the maternity ward and the provision of a new ducted air conditioning system for the dialysis unit. As the dialysis unit air conditioning system was a reverse cycle model, heating, as well as cooling was available. An Innotech Maxim digital control system was installed to provide precise temperature control and data logging capability. In addition, all of the medical gas requirements were included in the mechanical services contract.

The electrical services contract included the supply and installation of new essential and non-essential services sub-boards for the maternity ward. These were fed from the existing sub-boards located in this building. A new chassis type sub-board was installed into the new dialysis unit. A new set of underground sub-mains was also installed for the dialysis unit to allow for the additional loading.

Modifications were carried out to the switchboard feeding the dialysis unit to allow for the new loading. New lighting was installed in both the maternity and dialysis units. New essential and non-essential general power outlets with also installed throughout both wards. Some of the rooms in the maternity ward were designated body protected areas as per AS3003 and provision was made to meet this requirement. Medical services ducts were installed in the maternity ward which catered for all services required in the wards.

The existing nurse call and emergency call systems were modified and extended in the wards. New communications outlets were installed in both wards and new patch panels provided in the maternity unit. A new rack was installed in the dialysis ward with an optic fibre link into the existing hospital data network.

This project was completed on time and on budget by a dedicated team from Jackson & Jackson. Some other projects since completed for Queensland Health included the mechanical services for the new Cardwell medical centre and electrical and mechanical services for the Innisfail Hospital temporary dental unit.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

BSES (Bureau of Sugar Experimentation Stations) has a large sugar cane research facility at Meringa near Gordonvale in Far North Queensland. Many specialised experiments are carried out at this facility with the aim of improving the productivity of the sugar industry in Queensland.

One of the specialised facilities at this site is the PPF (Photo-Period Facility). This facility is capable of controlling the length of each day for a small quantity of sugar cane grown under set day length conditions. While the original PPF has been in service for many years now, several years ago it was decided that another PPF facility was required at this site.

Jackson & Jackson was selected to provide the mechanical and electrical services for this interesting project.

The air conditioning for this project is based on split-ducted, reverse cycle systems. Each chamber is fitting with an individual air conditioning system to allow for heating or cooling temperature control to maintain the temperature depending to the set point required. The temperature sensing is carried out at three separate levels in the chamber and averaged to take into account any temperature gradient present within the chamber.

The lighting in each chamber was selected to provide ambient lighting similar to natural daylight at the beginning and end of each day. The lighting consists of a combination of fluorescent and incandescent light fittings.

The roller doors for each chamber are automatically raised at the required time each morning before the tram is winched out. In the evening the doors are lowered after the tram is parked back in the chamber. Infra-red beam sensors are utilised to ensure that the doorway is clear before the door is lowered.

Each of the cane trolleys is automatically winched from its respective chamber and into the daylight at the calculated time each morning. In the evening the tram is winched back into its chamber at the calculated time. The lighting is switched on or off by the control system as necessary to achieve the required day length. Each individual chamber is equipped with an electric winch wound with steel cable to manoeuvre the tram from each end with a pulley arrangement. Each chamber has a tram track of varying length to allow each tram to receive full sunlight during the day. Electric limit switches are installed at each end of the tram track to stop the winch at the required place.

As each tram reaches the end of its track an irrigation coupler engages to the irrigation station which is fitted with a solenoid to allow for control of the irrigation system. Each tram is irrigated a number of times during the day according to its schedule. The irrigation coupler disconnects as the tram begins its journey into its respective chamber each evening.

The control system for each of the PPF facilities is made up of a number of Innotech Genesis II DDC controls. This control system calculates the almanac sunrise and sunset each day and controls all the functions of the facility including the lighting, air conditioning, roller doors, winches, irrigation, data-logging and alarms. A wind-speed sensor is installed to monitor the ambient wind-speed. If the wind-speed exceeds a pre-determined set-point all the trams are winched into the chambers and the doors closed to protect the sugar cane. This powerful control system allows the facility to be completely automatic in operation.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

Blenners Transport is a busy and fast growing freight company based in Tully, Far North Queensland. Several years ago a new main freight depot was constructed at Hewitt Siding, just South of Tully. Jackson & Jackson were selected to provide the refrigeration and air conditioning requirements for this project.

The refrigeration consisted of produce coldrooms with refrigeration equipment selected to provide a high relative humidity within the coldroom. While some of the equipment was relocated from the Bingal Bay depot, the majority of the equipment was new. There were six coldrooms initially installed, each with a capacity of twenty-four pallets.

A seventh coldroom was added late in 2006. Each coldroom is fitted with an electronic temperature control and a temperature alarm system monitors all of the coldrooms. Each coldroom is fitted with wall protection steel around the internal perimeter.

Ducted air conditioning was installed for the offices and split systems in other areas.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

The township of Mareeba, on the Atherton Tablelands in Far North Queensland was selected as the site for a new County Target retail outlet.

Jackson & Jackson Refrigeration Pty Ltd was selected to provide both the mechanical and electrical services for the project. This was a design and construct project with detail provided in the form of a new store brief. A mechanical services installation was designed to suit the building by the installation team. An electrical installation was designed to suit the Target design brief.

The project involved a complete refurbishment of an existing building including some structural changes and removal of all internal structure from within the building. After the building was stripped a new fit out commenced.

The air conditioning for this project consists of four main rooftop air conditioning systems and one smaller split-ducted air conditioning system for the office and team area. A DDC control system was installed to control all of these air conditioning plants and the automatic lighting schedules.

The electrical installation consists of a completely new electrical installation, including all lighting, a new purpose built main switchboard, underground mains to a pad-mount transformer, general power points and sub-circuits. A new main communication cabling system was installed, with a MDF and an IDF. A complete electronic fire protection system was designed and installed for the project.

The project was completed on time and on budget with a good overall result.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

Gallo Farming is a large dairy farming operation near Atherton on the Atherton Tableland in Far North Queensland. During 2006 a project to construct a new cheese and chocolate production facility was commenced. This facility is located adjacent to the existing dairy which will provide the milk requirements of the new factory.

Jackson & Jackson Refrigeration Pty Ltd was selected to design and construct the refrigeration and air conditioning requirements of this project. The new facility incorporates a viewing deck, cafe and shop. Much of the factory part of this facility is constructed from sandwich panel as part of the refrigeration contract.

The main production area is air conditioned with a split-ducted air conditioning system to provide the required cooling. A number of storage and production coldrooms lead off this area. These coldrooms are all part of the production process and are set to achieve differing temperature and humidity conditions as required by the different products.

Each coldroom is fitted with its own individual refrigeration system. Some of the coldrooms are fitted with a provision to allow for humidity control. All of the refrigeration outdoor units are mounted in a designated plant area. The lighting in the main production area is metal-halide with the coldrooms all fitted with fluorescent fittings.

The controls for this project consist of Innotech Maxim DDC digital controls and a dedicated PC. This control system is utilised to control, data-log and monitor the temperature in all coldrooms and the main processing area. The control system maintains humidity in the coldrooms which require this. All of the coldrooms will bring up an alarm if the conditions don’t reach pre-determined levels. The data from the control system is extracted and viewed in a graphical format. This control system also offers remote monitoring if required.

The shop and café contains a freezer-room, coldroom and a chocolate storage room. The temperatures within these rooms are monitored by a small Maxim control located within this area and connected to the control network. This building is fully air conditioned with inverter type, reverse cycle air conditioning systems.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

Hawkin’s Transport is a freight company operating in the Tully area of Far North Queensland. Several years ago a new freight depot was constructed as a part of a large central packing house at Davidson Rd, near Euramo, just South of Tully. Jackson & Jackson was selected to provide the refrigeration and air conditioning requirements for this project.

The first stage of the project involved the construction of four coldrooms, each with a capacity of twenty-two pallets. At a later stage a set of coldrooms identical in design to the first were added. Each set of coldrooms has a capacity of eighty-eight pallets, with the total capacity being one hundred and seventy six pallet spaces, on a single level.

The refrigeration consisted of produce coldrooms with refrigeration equipment selected to provide a high relative humidity. While some of the equipment was relocated from a depot installed on a nearby farm, the majority of the equipment was new. The coldrooms are of stand alone weather-proof type of construction.

The coldrooms are constructed from an engineered design to allow for structural requirements. The ceilings are raked to provide water run off. Each set of coldroom is fitted with an Innotech Genesis 2 DDC electronic control system. This control system monitors, data-logs and controls the temperature in each coldroom. Both of the Genesis control systems are connected together on a network which is connected to a PC located in the office.

The control systems also feature a temperature alarm system with the capability to send an SMS message in the event of an alarm condition. This system can also be interrogated remotely to monitor the condition and status of each coldroom. The data from each control can be extracted and viewed in a graph format.

Each coldroom is fitted with wall protection steel around the internal perimeter. The whole facility is constructed on a raised concrete platform to allow the pack-house to be higher than the potential flood height for the site. The refrigeration equipment for the project is also installed in steel frames to allow for the flood heights.

Inside each coldroom a false wall is installed parallel to the back wall, to provide for a plenum chamber at the rear. Each coldroom has forced air cooling tarps installed with a rope suspension system to allow the tarps to be raised and lowered as required with relative ease to allow for loading and unloading.

The coldrooms experience a relatively large throughput from the large capacity pack-house and have provided many years of service.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

Howe Farming has a large Banana and avocado plantation near Mareeba on the Atherton Tableland. The operation has a large pack-house where all the produce is packed into cartons for shipping to market. Once the produce is harvested and packed into cartons there is a requirement to cool the product to around 15°c.

One seventy-two pallet produce coldroom, equipped with three separate chambers of 24 pallets each, was installed for this purpose several years previously. These particular coldrooms are of the weather-room type and are fully exposed to the elements. This type of coldroom construction features a raked (angled) ceiling to allow for water run-off. The main feature of this type of construction is that it is more economical than building a separate shed structure over the coldroom facility.

Each chamber within the coldroom is fitted with a plenum wall which is in essence a false rear wall. Forced air cooling tarps are fitted with a rope suspension fitting to allow for easier deployment. These tarps, when combined with a plenum chamber, are utilised to increase the air-flow through the produce cartons and reduce cooling times. This coldroom is fitted with steel wall protection around the internal perimeter of the coldrooms to assist with loading and unloading pallets.

Each chamber is fitted with an individual, direct expansion refrigeration system to achieve the required conditions. These refrigeration systems are designed to maintain a high relative humidity in each chamber and cool the produce in the required timeframe.

In late 2006 Howe Farming placed an order for an additional ninety-six pallet produce coldroom to meet an increased need for post harvest cooling requirements. This coldroom is of the same design as the original, but with four chambers instead of three. Forced air cooling tarps and wall protection steel have been installed in the same fashion as the original coldrooms. This brings the total coldroom space available on site to one hundred and sixty eight pallet spaces.

A new digital control system has been installed and commissioned as a part of the new coldroom project. This control system will be employed to control and monitor all seven coldroom chambers. An Innotech Genesis II DDC control forms the heart of this system and provides precise temperature control and extensive data-logging capability for each coldroom chamber. An Innotech Magellan graphics package has been employed to monitor the conditions in each coldroom from computer terminals within the packing facility.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

K-Mart decided to commission a new retail outlet in Innisfail in Tropical Far North Queensland in 2005.This store is housed in a new, purpose built, structure with K-Mart as the major tenant and three smaller tenancies also included.

Through the head building, contractor Jackson & Jackson was selected to provide the mechanical services for this project. The air conditioning for this project consists of five large air conditioning plants and five smaller air conditioning systems for the K-Mart tenancy one air conditioning system for a smaller tenancy. Four large air conditioning systems provide cooling for the main trading floor. One large air conditioning system is employed to cool the stock reserve area within the K-Mart store.

The electrical supply for all of the mechanical services plant originates from the custom built mechanical services switchboard. All of the electrical services associated with the mechanical contract were carried out in house. The mechanical services contract included a BMS system with controls many functions within the K-Mart tenancy, including, all of the air conditioning, some of the lighting and the automatic generator test function.

All of the smoke spill fans, exhaust fans and fresh air introduction were supplied and installed by Jackson & Jackson. The final smoke test for this project was conducted by our project team.

The project was completed in a tight time frame and the warranty period passed with no major difficulties.

Atherton Hospital • BSES Meringa • Blenner's Transport

Country Target - Mareeba • Gallo Farming • Hawkins Transport

Howe Farming • Kmart Innisfail • Torres Strait Primary Health Care

Innot Enterprises Milk Pre-Cooler

CLICK the photos to enlarge

During 2004 Queensland Health constructed and commissioned three new Primary Health Care Facilities on three islands within the Torres Strait in Far North Queensland. These facilities replaced existing health care centres in each of the communities of Mabuiag Island, Kubin Village and Yam Island.

Jackson & Jackson was selected to provide the mechanical services, electrical services and electronic services for this project by the head contractor who won the tender for these works.

Each of these Primary Health Care Facilities consists of the Primary Health care medical facility on the ground level. Two accommodation units occupy the first floor to provide for health care staff.

The air conditioning consisted of upright free blow and ducted air conditioning systems with remote outdoor units were supplied and installed in compliance with the specifications provided. Various exhaust fans were installed again as called for by the specifications.

The electrical services installation included all of the lighting requirements, general purpose power outlets and dedicated power requirements. A 316 stainless steel main switchboard was designed and constructed specially for the project and consumer mains installed. Permanently installed generating sets were selected and installed with a changeover switch to power the essential loads. Some of the rooms within the facility comply with a specific medical electrical installation standard.

The electronic services for the project included the MATV TV reception system, a full nurse call system, security and duress system, intercom systems and all communication cabling requirements. The bulk of this work was performed by Jackson & Jackson staff, who are qualified for this type of installation work.

The project was completed on time and on budget despite many and varied challenges encountered during its course. During 2007 Jackson & Jackson Refrigeration Pty Ltd was awarded a contract to complete two more Primary Health care Centres based on the same design as the first project.

Jackson & Jackson Refrigeration Pty Ltd is equipped and experienced to complete contracts in remote areas from our Innisfail base.

CLICK the photos to enlarge

This project originated with a design brief for a machine to cool 20,000 litres per day of fresh milk from 32 degrees Celsius to 24 degrees Celsius. These parameters were to be met to allow the exiting milk vat to reduce the temperature to below 4 degrees Celsius in the required time frame.

Firstly the refrigeration capacity required to achieve these specifications was calculated. Once this figure was established an appropriate compressor and condenser were selected. Selecting an evaporator for this application was a little more challenging as it had to be a specific type. There was a requirement that this direct expansion evaporator be able to be cleaned easily. After locating an evaporator to fit the design and capacity conditions it was time to assemble and test run this refrigeration system. An Innotech Maxim 3 Control was selected to carry out all of the required control functions.

The compressor for this project was a 6 cylinder unit with each of the three heads being fitted with unloader heads. This allowed the compressor to run for a short period of time in a fully unloaded state. This was done to minimize the stopping and starting of the compressor due to the highly variable nature of the flow of milk from the 50 stand rotalactor.

The refrigeration was completely assembled and test run in our Innisfail workshop with fresh water used to simulate the anticipated loadings. After testing and commissioning the system it was installed on site. During the commissioning of this system everything functioned as intended. This system is now in service and is working quite well. It is delivering the desired results.