What is an industrial electrical system?

Industrial power system is a power transmission and distribution system to help machines and equipment operate in service of production, business and services. This system ensures the stable operation of the power source, and at the same time develops a safe, reasonable and efficient power transmission system for all industrial activities.

What does the industrial electrical system include?

After understanding what is an industrial electrical system? We need to grasp what a complete industrial electrical system consists of. Understanding before installing the system will help us optimize construction time.

The industrial electrical system consists of many parts and each part has a different function and task. As follows:

The medium-voltage system provides power to the total transformer: This is a transformer part to convert current from the national power network to serve production and business. This system aims at stabilizing the current, making adjustments to increase and decrease the voltage to an appropriate level. As a result, machinery and equipment in the factory can operate efficiently.

Distribution switchboard system:  A system installed to manage the circulation of power in the factory to ensure the safety of industrial equipment and machinery.

Industrial equipment electrical cabinet system:  Is a control cabinet system to adjust the power on and off for industrial electrical equipment. The electrical equipment cabinets usually include: Ammeter, Volt meter, fuse, … to ensure the safety of machinery and equipment.

Industrial equipment system:  This is the core part, directly affecting production and business. Industrial electrical equipment system includes: equipment and machinery directly involved in the production process (production, processing, packaging, ..) and other electrical-using parts (systems). lighting, air conditioning, ventilation, etc.).

The role of the industrial electrical system

The electrical system in industry plays an important role in the production and operation of products of each enterprise, namely:

• Technical improvement in the process of using, improving the productivity of industrial equipment. Ensure the staff to carry out the production process continuously, without interruption.
• Labor saving.
• Reduce production costs to a significant extent, lower product costs, improve quality.
• Bringing modern technology into a more dynamic and mechanical system to save time.
• The price is consistent with the production process of the product.
• Can replace humans, do things that humans cannot do manually.

What criteria should be paid attention to when installing industrial electrical systems?

When installing industrial electrical systems, when checking, they need to ensure the following requirements:

• Handover equipment needs to meet electrical safety criteria. Avoid causing unsafety during operation and use
• The system operates smoothly and efficiently. This criterion is evaluated by the working capacity of the system. It needs to ensure that it does not affect the production schedule of the enterprise
• Saving operating costs: It is necessary to calculate the correct scale and capacity to use. Learn how to properly arrange and use equipment to avoid wasting electricity
• Meet state standards: The industrial electrical system used should ensure standards such as TCVN 7447-5-51: 2010, TCBN 394: 2007…

Professional installation of industrial electrical systems

Construction of light electrical systems and industrial electrical systems is an important stage. The construction will directly affect the entire operation of the building, factory, and workshop in the future. To ensure electrical safety, when doing so, you need to follow the steps below:

Have the necessary equipment ready

To save construction time, the first thing you need to do is prepare the necessary equipment.

The industrial power system will be somewhat different from the residential electricity system. Therefore, there will be some separate equipment that is not available when installing civil electricity such as:

• Transformer : Industrial electricity has a fairly high voltage level (380V). Therefore, it is necessary to use transformers to ensure stable power supply. It is necessary to ensure the safe transmission of electricity to the machinery and equipment during installation.
• Industrial workshop electrical cabinets : These are specialized large cabinets used as distribution cabinets. Control cabinets for machinery systems, electrical systems.
• Electrical conductors : Single-phase and 3-phase power transmission lines are used to conduct electricity from outside as well as inside the factory.
• System protection devices : Including circuit breakers, aptomats, relays, … have the function of protecting the electrical system when overloaded or when the current is unstable, ensuring safety for users.
• Signaling devices : Indicator lights, ringing bells, … to warn of operating status. Especially help to recognize warnings when the system has problems

Surveying the project, receiving customer information

After preparing all the electrical equipment to be used in the construction and installation of the electrical system. The construction unit needs to go directly to the work and location that they will perform. Thanks to that, the new unit can measure, survey and make accurate and appropriate calculations.

In addition, the construction unit of the factory electrical system also needs to pay attention to the requirements of customers. As well as the characteristics of the business industry. From there, it is possible to have a suitable, effective and economical plan for the factory’s electrical system.

Design drawings of industrial electrical systems

To have a perfect and standard construction drawing, it is necessary to ensure the following criteria:

• Strictly comply with the standards on language and symbols used in electrical engineering drawings
• Ensure the level of electrical safety during both construction and operation
• Commitment to the ability to meet the capacity and efficiency as required by the business
• Calculation of construction costs to ensure the most economical and optimal

Construction and installation of industrial electrical systems

Construction and installation of the most important electrical system in the whole process. During construction, the implementing units need to ensure the following factors:

• Construction according to approved design drawings.
• Ensure the safety of the system during operation.
• Commitment to the efficiency in the operation of the equipment in the system.
• Easy to repair and maintain industrial electrical systems later.

Acceptance and inspection

After completing the construction, it is necessary to run tests on the real system to check the level of safety. Check whether the power supply to the device meets the requirements set out or not. Only then will it be accepted and transferred to the enterprise.

When the system has been tested, it is stable and safe. The construction unit will transfer the electrical system to the owner. Starting in the warranty period, post-installation maintenance of industrial electrical systems.

Notes when installing industrial electrical systems

As is known, electricity is a meaningful form of energy that contributes to all human activities. Therefore, industrial electrical safety is always checked and monitored regularly.

In order to install a safe industrial electrical system, the owner of the facility must adhere to the principles and arrangement of the safe operation of the power network. Strictly observe the following safety rules:

• For the person in charge of expertise: it is necessary to understand the equipment, electrical diagrams and operating techniques to avoid the risk of danger. Must have knowledge of electrical engineering safety, when bad situations occur. Able to handle situations and can give first aid to people who have been electrocuted.
• For workers: Ensure the principle of 1 person monitoring, 1 person working when installing.
• For businesses: Must regularly review and check the entire network. Strictly observe electrical safety rules.
• In addition, it is necessary to select the correct voltage as well as perform grounding. When working with electrical equipment, workers must use specialized tools and protective equipment. Ensure that insulating material is available at all times and that electrical equipment is regularly checked.

The above article has shared with you the process to install professional industrial electrical systems . Electricity is a very dangerous source of energy. Therefore, before constructing any electrical work, you need to study the installation process to avoid unfortunate incidents. If you still have any questions, contact p69 for answers.

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Fire fighting & protection system of MCW construction JSC includes:

• Fire alarm and fire fighting system
• Automatic fire fighting system with water, CO2, N2
• Flame retardant materials
• Pressurizing system for exit stairs
• System of fans supplying oxygen, fire extinguishers, pipes, hoses…

It can be said that there are few types of accidents that can cause great loss of life and property at the same time. Like fires, fire incidents can happen anywhere and at any time. With the continuous development of the economy. There are more and more high-rise buildings and commercial centers. Newly built factory, with modern features. The construction of fire protection system, lightning protection system plays a very important role. Help us be more proactive in ensuring the safety of life and property. Like all construction activities, especially when the situation of fire and explosion occurs as often as today.

   General legal basis for construction of Fire fighting & protection system:

• Pursuant to the law on fire prevention and fighting June 29, 2001.
• Pursuant to Vietnamese standard TCVN 2622 – 1995: (on fire prevention and fighting for houses and works with design requirements).
• Pursuant to Vietnamese standard TCVN 5738 – 2001: (Automatic fire alarm system design requirements).
• Pursuant to Vietnamese standard TCVN 5760 – 1993: (Fire fighting system – general requirements for design, installation and use).
• Pursuant to Vietnam standard TCVN 6102 – 1995: (Fire prevention system, powder fire extinguishing agent).
• Based on Vietnamese standards TCVN 7435-1- 2004-ISO 11602-1: 2000 Fire protection – Portable fire extinguishers and trolley type fire extinguishers – Equipment selection and installation location arrangement
• Pursuant to Vietnamese standard TCVN 3890 – 2009 is prescribed on fire prevention & fighting equipment for houses and construction works – equipment, installation, inspection and maintenance.

The need for a fire protection system

– It can be said that there are a few types of accidents that can cause great loss of life and property at the same time. Like fires, fire incidents can happen anywhere and at any time. With the continuous development of the economy. There are more and more high-rise buildings and commercial centers. Newly built factory, with modern features. The construction of fire protection system, lightning protection system plays a very important role. Help us be more proactive in ensuring the safety of life and property. Like all construction activities, especially when the situation of fire and explosion occurs as often as today

– In addition to the mandatory general regulations to ensure fire prevention and fighting of the law on construction and fire prevention. The construction of a fire protection system is also an urgent safety need for all works. This fire suppression system helps us to be proactive in early detection. Extinguish new flare-ups that can develop into large fires. Its impact will be huge on lives and properties. Of the construction investor, the family or of everyone who lives and works there. Damage can be greater when the fire is not controlled and can affect the surrounding. Construction and construction of quality fire protection systems. Always ready to meet the needs of fire fighting 24/24 is the urgency for all construction projects

Contact us today for a free consultation and answer at:

MCW INVESTMENT JOINT STOCK COMPANY

Headquarter: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi

Hotline: 02422121212 – 09656937799

Email: [email protected]

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CONSTRUCTION, INSTALLATION OF GENERAL WATER SUPPLY SYSTEM

BASIC CONDITION:

• Read and understand carefully the drawing to determine the location, main axis water supply pipeline and connection points of the equipment: Water meter, valves (Need to coordinate with the technical department of the project owner). Perform all installation and browsing details prior to installation.
• Read and understand drawings that are coordinated with other items such as Power Supply, Fire, Telecommunications, Structure, Architecture. To ensure that the construction does not affect the installation space and affect the structure or architecture of the building.

EQUIPMENT INSTALLATION WORK:

• Make a list of equipment for each area (or each floor) – which shows all parameters such as type, specifications, installation location, quantity and approved by the Construction Manager.
• Before installation, all pipe ends must be cleaned (Manually or using an air compressor).
• During installation, the manufacturer’s installation instructions must be followed.
• Note the direction of the device after installation, to avoid the case of being reversed or untidy.
• Label with plastic, clearly shows the order number/direction of water supply on the main water supply pipe according to the drawing, update the as-built drawing of the layout and principle diagram, save the file.
• The water pump system is quality checked by operating the pressure test water pump, operating in manual and automatic modes.
• Prepare a statistical table and submit it to the Construction Manager for approval before installation.
• Determining the installation location of sanitary equipment according to the drawings in coordination with other systems such as: air conditioning, ventilation, electrical cabinets, fire alarm, sound,…
• Record system test results, submit to Supervision Consultant, and keep records.

CONSTRUCTION OF CLEAN WATER SUPPLY SYSTEM ONLY

1. Direct water supply system

• Water source: surface water or groundwater
• Collection works + Level 1 pumping station: collect water from the source and pump it to the treatment station
• Treatment station: clean the source water to meet the quality requirements for use
• Level 2 pumping station: bringing the treated water from the clean water tank to the consumer network
• Water tower: regulates the flow between the level 2 pumping station and the consumer network
• Transmission and distribution network: including transmission level 1 network, distribution level 2 network and level 3 network connected to the pipes supplying the house.

2. Requirements for a clean water supply system

• Ensure adequate and continuous delivery of the required amount of water to the points of consumption.
• Ensure water quality meets usage requirements
• Low cost of construction and management
• Construction and management are easy and convenient, capable of automating and mechanizing the exploitation, treatment and transportation of water..

INSTALLATION OF WASTE DRAINAGE SYSTEM

A drainage system is a collection of tools, drainage pipes and structures that perform three functions: collecting, transporting and treating wastewater before it is discharged to the source.

1. Wastewater classification

Based on the nature and origin, wastewater is classified into three main categories:

• Domestic wastewater: After being used for personal purposes such as cooking, bathing, flushing the toilet, etc., the wastewater contains a lot of organic dirt, as well as bacteria. This is called domestic wastewater.
• Production wastewater: is the type of wastewater discharged after the production technology process, with different compositions, properties and pollution levels depending on the type of industry, raw materials as well as operating regulations.
• Contaminated rainwater: after every heavy rain, rainwater falls and flows on the surface of streets, roofs of residential areas and industrial parks. Rainwater in urban areas is not as fresh as in rural areas, so it is also considered a form of wastewater.
• Urban wastewater: is the type of wastewater discharged from the process of production and daily life.

2. Sewage drainage systems

Water supply and drainage system

The drainage system is a combination of works, equipment and technical solutions for wastewater drainage. Based on the transportation of domestic wastewater in general or separately, we can have the following types of drainage systems:

• General drainage system;
• Separate drainage system;
• Semi-private drainage system;
• Mixed system.

The construction of the water supply and drainage system is an indispensable item in the electromechanical system of the project. Is the installation of water supply pipes, drainage pipes, and equipment in the project according to the correct technique, ensuring an optimal installation and operating costs in the future.

MCW.JSC constructs and installs the leading prestigious water supply and drainage system.

To have a water supply and drainage system with high-quality standards, fully meeting the criteria of safety, hygiene, convenience and sustainability, requires a team of professional technicians. All of those criteria are fully met by MCW.JSC. With years of experience in the profession, along with enthusiasm and prestige confirmed through many projects, MCW.JSC deserves to be the No. 1 prestigious contractor. MCW.JSC is also an M&E contractor, contractor. Installing a reputable and professional fire protection system in the market for many years.

Contact us today for a free consultation and answer at:

MCW INVESTMENT JOINT STOCK COMPANY

Headquarter: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi

Hotline: 02422121212 – 09656937799

Email: [email protected]

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EI ductwork structure:

• Layer 1: Galvanized corrugated iron layer; minimum thickness 0.75mm
• Layer 2: Primer layer: (paint to treat the surface of corrugated iron, zinc, …) to create roughness in order to increase the ability to adhere and bond between layers of materials with the corrugated iron surface of the duct. The reinforced wire mesh layer helps the connection between the layers of materials and is more durable. Note: Depending on the size of the duct, it will be used accordingly.
• Layer 3: Central insulation fireproof layer
• Layer 4: The outermost layer is fireproof paint

Conditions for construction of EI ductwork system:

• Condition:
  – The surface of the material must be cleaned of grease and dirt
  – It is recommended to apply when the air temperature is >10 degrees Celsius and the air humidity is <85%, no rain, splash water on the surface.
• Thickness required protective layers
  The total thickness of the constructions must be according to the norm and meet the selected fire resistance standard.
• Dry time:
  – Temperature: The lower the temperature, the longer the drying time.
  – Air humidity: The higher the air humidity, the longer the drying time, should not be applied while the air humidity is > 85%.
  – Air circulation: In well-ventilated areas will dry faster.
  – Coating thickness: Depending on the material coating thickness, drying time varies.
  – Construction method: It is recommended to limit construction in conditions of low temperature, high humidity, low air circulation.

The EI ductwork system has an extremely important role: fire prevention, fire control, toxic gas removal and smoke extraction in fire areas. With this requirement, the design and installation of fireproof ductwork is very important to protect the safety of human life and property.

MCW INVESTMENT JOINT STOCK COMPANY

Headquarter: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi

Hotline: 02422121212 – 09656937799

Email: [email protected]

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• Ensure power quality, i.e. make sure the frequency and voltage are within the allowable range.
• Ensure reliability and continuity of power supply in accordance with the requirements of the load.
• Convenient in operation, assembly and repair
• Having reasonable economic and technical criteria.

The structure of the high-rise building’s electrical system includes:

Light electrical system of the building:

• Surveillance cameras (mainly using ip cameras), sensor systems, magnetic induction, anti-theft…
• Telephone network, computer network, communication infrastructure, television of the building
• Access control
• The central control system includes television, public speakers.

Heavy electrical system of the building:

• Transformers, generators
• Lights
• Water supply system (pumps, pipes ..)
• Control Center
• Anti-lightning system

Construction of the system electricalbuilding high-rise includes the following main issues:

• Rich and diverse loads (voltage, capacity, phase …)
• The load is concentrated in a narrow space, the load density is relatively high.
• There are backup power supply systems (batteries, generators, etc.)
• The installation space is limited and must satisfy the technical requirements in the construction architecture.
• High requirements on working mode and safety for users.

What does the light electrical system include?

Normally, the light electrical system will include the following items:

Camera surveillance system

Surveillance camera system also known as video surveillance system, is the use of cameras to transmit signals to a specific location, on a set of surveillance monitors. Surveillance camera system is an important element in security management and control. With many new technologies on cameras as well as video recorders,  surveillance camera systems  have become one of the leading security and theft prevention solutions today.

Surveillance camera system reliable, efficient and easy to use. Using cameras, we can monitor anywhere we want to ensure security and safety. Recorded images are stored in the DVR and can be easily viewed through software or on the monitor screen.

Currently, camera can be connected wired or wirelessly to surveillance camera system. Surveillance cameras are an effective deterrent to any threat or area that requires constant outside surveillance.

The important point in the installation of surveillance camera is the location of the camera, to ensure that the camera can monitor the required area within the field of view as well as the clarity of the recorded video to ensure usability video if necessary.

Telephon system

Helps maintain communication connections outside or within the business.

Public sound system

A public address system is an electronic sound distribution and amplification system with microphones, amplifiers, and loudspeakers, used to enable speakers to speak in public. It is also used as a voice emergency evacuation system. Combining the public sound system with the fire alarm system, the system will automatically activate when there is an emergency fire alarm, it will notify the evacuation of dangerous areas and warn other areas. Public address systems are widely used in buildings, public places, offices and commercial centers,…

The general alarm system allows remote control of alarms and flashing lights (beacons).

Combined, this system will serve the common use of relay information or be used in the event of an emergency evacuation.

Access control system

As a key feature of any security system center that can secure, monitor and manage employee access rights in any type of building, manage access in and out of buildings, manage doors as well as elevators… With this system, employees can be issued access cards or using fingerprints (biometrics), they can be granted access to other areas each other of the establishment.

Today, “access control systems” link together wirelessly and are often connected to a local area network to reduce wiring costs and flexibility of system location. Sometimes, the access control system  can be part of a larger integrated  ELV system , allowing central control of many different systems.

Smart parking system

Combined with advanced and modern technologies such as: surveillance by camera, control of vehicle traffic in/out by magnetic card system, number plate recognition, etc., it helps the system work quickly and safely for the parking lot. keep your car always operating at high capacity without worrying about congestion.

Benefit:

• Improve work efficiency
• Reduce personnel, save costs and time
• Operate means of transport easily and scientifically
• Strictly control financial matters.

Automatic fire alarm system

The system automatically detects and alarms when a fire occurs in order to minimize the consequences it may cause.

Anti-theft alarm system

As a security system whereby the main purpose of this system is to be able to detect any break-in in your area.

There are many sensors installed on different parts of the fence, door, so whenever an intrusion is detected in a certain fenced area, if there is a CCTV  nearby, human Security personnel will be able to view CCTV to see the intrusion if possible. If necessary, a direct inspection of the area of security instability is also necessary to ensure the security of your area.

Building management system

As a synchronous system that allows to control and manage all technical systems in the building such as electricity system, domestic water supply system, air conditioning, environmental warning, security,  fire alarm – fire fighting vv…, ensuring the correct, timely, efficient operation of equipment in the building, saving energy and saving operating costs

Intercom system, used in high-rise apartments, combined with elevator and parking lot management

Satellite TV systems, cable TV systems, using signals taken directly from the broadcaster or through a television service provider.

Automatic lighting control system

Help manage the lighting system in the most convenient way, improve the efficiency of use and save energy for the lighting system.

Time attendance and access control system

Help manage the working time of employees, along with integrated software can easily manage and pay employees. Currently, the timekeeper has many settings, can use cards, fingerprints as well as face recognition….

Basic steps of construction of light electrical system in Hanoi

• Receiving customers’ needs: Customers have a need to install a light electrical system to ensure the security, property of the building and manage the project in the most convenient and economical way.
• Site survey and consultation: After receiving customer needs, our specialists will visit the site to survey the site to know more about the needs and give detailed advice on light electrical systems. The installation of reasonable equipment, the clearest and most detailed way of wiring for customers.
• Quotation: Prepare a construction plan and accompanying materials, we will send a detailed quote to the customer.
• System construction:  Build the system according to customer requirements and drawings. During the stage of  installation of the light electrical system, ensure the technical standards set forth in the technical design and ensure the overall aesthetic and aesthetic of the building and the area where the equipment is installed.

At the same time, closely check the installation of the system, ensure the safety of the equipment, minimize the impact on the equipment of the system…

After completing the installation of light electrical systems at the locations, the inspection and test runs are carried out. Testing helps to ensure that the system is operating in a stable manner.

• Handover and payment: Acceptance, handover, instructions for use and installation of the system’s software for customers. The customer will proceed to liquidate the contract in accordance with the signed terms.

After liquidating the contract, our work has not stopped there. We will continue to warranty and maintain the system in accordance with the signed contract.

MCW – the leading provider of light electrical solutions in Hanoi

MCW provides prestigious and quality Hanoi light electrical solutions

We always want to bring customers the highest satisfaction because  MCW understands that that is the way to show the prestige and professionalism of the supplier construction and installation of light electrical systems.

Contact us today for a free consultation and answer at:

MCW INVESMENT JOIN STOCK COMPANY

Headquarter: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi

Hotline: 02422121212 – 09656937799

Email: [email protected]

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The air-conditioned environment is a closed space, so there is no natural air exchange, so if you want to provide O2, it is necessary to provide a certain amount of air in accordance with human needs.

A ventilation system is a system that helps to change or replace the amount of air inside a fixed space to provide a source of high-quality air for the living environment in that space. The ventilation system installed will help control the temperature, add oxygen or remove odors, moisture, harmful bacteria as well as CO2. When the air source is circulated through this system, the outside air will be brought in, and at the same time, the exhaust gas from the inside will also be pushed out, forming a continuous circulation cycle, helping to prevent air pollution. prevent stagnation of the air.

Typical construction ventilation systems of MCW.JSC:

• Factory ventilation system.
• Office ventilation system.
• Ventilation system basement, garage.
• The ventilation system pressurizes the stairs.

When installing ventilation systems, we need to comply with the following regulations:

• All dimensions must be checked on site prior to duct production.
• All ductwork installation must be carried out by a specialist approved for duct manufacture and installation. Ducts should not come into direct contact with the building structure or building finishes but must be isolated by means of an isolating pad.
• Manufacturing shall be carried out in a compact and finished manner with all ducts of the correct size dimensions and cross-sections, braced and stiffened as specified and all internal and external surfaces not protruding and have sharp edges.

During the installation of the ventilation system, at each main branch in the duct, and the inlet and outlet of each fan, arrange a sufficient number of test holes to balance the system. Also, arrange test holes for fan ejectors and at all equipment. Inspection holes shall be located within easy reach of the working platform or ladder. Each inspection hole shall be of the appropriate size for the equipment used and shall be closed with a ribbed rubber stopper to ensure airtightness. The connection between ductwork sections must comply with installation details.

• Reinforcement holes must be arranged at the place where thermometers, manometers, sensors, gauges, damper bars, etc. are installed in the pipeline. Expansion rings shall be provided for reinforcement holes where they are located in the insulated ductwork.
• In places where copper pipes go through ducts or equipment casings, rubber washers must be arranged to avoid damage to copper pipes.
• Ducts must be suspended or firmly supported from the building structure. Expansion bolts are used. Splints activated by particles generated by explosives are not acceptable.
• Angle trapezoidal hangers with supports up to 2m apart must use “C” beams, clamps will not be accepted. Provide necessary angle steel as required to brace ducts or equipment and to support ducts from the building structure.
• A layer of 5mm burlap of compressed thickness shall be provided between any supporting members which are designed to clamp or hold the pipe (e.g., round pipe strip clamps) or the member on which the pipe rests. All brackets are not hot-dip galvanized.

• Pipe size increase must be increased gradually. When the maximum width or dimension of the conduit is over 450mm, the pipes shall be reinforced by bending at a break-through corner in either direction.
• Ducts must be self-supporting. Single thickness bulkheads between pipes are not accepted. The interior parts that are visible through the vents will be painted matte black.
• All tolerances must be made during the “installation of pipes” to frame the structure of the building, and where changes or offsets are required, sections must be maintained.
• However, all these changes must be approved and installed according to the instructions at the time.
• During installation, the open ends of pipes should be protected by sealing, corrugated iron screens are fastened to prevent debris and dirt from entering.

• When pipes are shown connecting to openings along the edges of floors, walls, etc. Provide 30 X 30 X 4 mm galvanized angle steel that is bolted to the structure and must be gas sealed with compounds. putty in the corners. Sheet metal at these locations shall be bolted to the angle steel frame.
• All ducts, housings, air boxes, etc. must be made of high-quality galvanized corrugated iron sheets without air bubbles, stains, imperfectly coated spots, etc. Sheet metal is not allowed. low quality.
• If damage occurs on galvanized ductwork, it must be replaced with another piece at no additional cost to the contract.
• Pipes shall be constructed with double welds or Pittsburgh lock welds. All welds shall be hammer hammered and air-tight by applying sealants prior to hammering. For horizontal couplings, refer to applicable SMACNA or  ASHRAE  guidelines for low-pressure conduit.
• Clamp-lock couplings are not accepted.

• Support vertical ducts mounted in different axes at the floor with galvanized steel brackets of approved sizes. Install these angle steels along the width of the shaft with their ends attached to the angle steel firmly anchored to the shaft masonry walls or to the frame of floor openings. Ducts shall be attached to these supports with bolts.
• Ensure that all necessary openings through floors, walls, partitions, etc. for ventilation are arranged in the correct positions as required.
• Each ductwork shall be cleaned internally and externally prior to installation and all open ends shall be covered and sealed to prevent contamination during construction.
• Make sure that the ductwork is clean and free of dirt, debris, etc. before operating the fan for the first time. Do not operate the fan until the filters are installed and approved by the consultant.
• The bottom joint and 150mm of the fresh air vertical joint and the mixing box shall be made watertight with a suitable sealant. Connect the drain and take the copper drain hose to the nearest floor drain.
• All fixings including nuts, bolts and washers, etc. are used in the construction and installation of the ventilation system. Galvanized duct supports shall be galvanized or cadmium plated.
• The connection to the air outlet must use a flexible duct. Flexible ducts have a maximum length of 4m and must be insulated if the ducts are in the air conditioning system.

Contact us today for a free consultation and answer at:

MCW INVESTMENT JOINT STOCK COMPANY

Headquarter: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi

Hotline: 02422121212 – 09656937799

Email: [email protected]

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