Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
In accordance with "Notice on Printing and Distributing Formulation and Revision Plan for Engineering Construction Standards and Codes of 2012 " (JIANBIAO [2012] No. 5) of the Ministry of Housing and Urban-Rural Development), this code is revised by the drafting group through extensive investigation and research, careful summarization of practical experience, reference to relevant international and foreign advanced standards and widely soliciting opinions.
This code consists of 12 chapters and 5 annexes, mainly including general provisions, terms, basic requirements, duct making, duct accessory, duct system installation, fan and air handling equipment installation, cold/heat source and auxiliary equipment installation, installation of pipeline and equipment of air conditioning water system, anticorrosion and thermal insulation, system commissioning and final acceptance.
The main technical contents revised in this code include:
1. The terms for acceptance of the new technology, new process, new material and new equipment for ventilation and air conditioning works are supplemented and optimized;
2. The subdivision projects of this division project are reclassified according to the principle of operation independence and functional verification;
3. The assessment method of sampling inspection by quality acceptance lot specified in the current national standard GB/T 2828.11 Sampling procedures for inspection by attributes—Part 11: Procedures for assessment of declared quality levels for small population is introduced and recommended for use;
4. The clauses regarding the determination of and modification of the comprehensive performance of project are cancelled.
Provisions printed in bold type in this code are mandatory and must be implemented strictly.
The Ministry of Housing and Urban-Rural Development is in charge of the administration of this code and the explanation of the mandatory provisions and Shanghai Installation Engineering Group Co., Ltd. is responsible for the explanation of specific technical contents. If there are any comments or suggestions during the process of implementing this code, please send them to Shanghai Installation Engineering Group Co., Ltd. (Address: No. 390, Tanggu Road, Shanghai; 200080).
Code of acceptance for construction quality of ventilation and air conditioning works
1 General provisions
1.0.1 This code is developed with a view to unifying the quality acceptance for construction of ventilation and air conditioning and guaranteeing the work safety and quality.
1.0.2 This code is applicable to construction quality acceptance of the ventilation and air conditioning for industrial and civil buildings.
1.0.3 This code shall be used in conjunction with the current national standard GB 50300 Unified Standard for Constructional Quality Acceptance of Building Engineering.
1.0.4 The requirements for constructional quality of work which are specified for ventilation and air conditioning works in engineering technical document and work contract shall not be lower than those specified in this code.
1.0.5 The construction quality acceptance for ventilation and air conditioning works shall comply with not only this code but also the current relevant standards of the nation.
2 Terms
2.0.1
ventilation works
generic term for air supply, air exhaust, smoke control/exhaust, dedusting and pneumatic conveying system works
2.0.2
air conditioning works
generic term for comfort air conditioning, constant temperature and humidity air conditioning, cleanroom air purification and air conditioning system works
2.0.3
duct
duct, made from metallic, nonmetallic sheet or other material, for ventilation.
2.0.4
nonmetallic duct
duct made from such nonmetallic materials as rigid PVC and glass reinforced plastic (GRP)
2.0.5
foil-insulant composite duct
duct with incombustible surface course, made from thermal insulation material of flame resisting grade or above
2.0.6
refractory duct
duct made from composite incombustible and fire-resistant thermal insulation materials and reaching a specific fire endurance limit
2.0.7
duct fittings
components of duct system, e.g. elbow, tee, cross, special pipe, guide vane and flange
2.0.8
duct accessory
functional parts of duct system, e.g. vent, valve, hood, cowl, silencer, air filter, inspection door and determination hole
2.0.9
air channel
channel, made from such building materials as concrete and brick, for ventilation.
2.0.10
ventilating ducts for kitchen and bathroom
channels for discharging the fume generated by cooking appliance from kitchen and foul gas from bathroom in residential building
2.0.11
design working pressure
maximum design working pressure at the main duct of system
2.0.12
air leakage rate
air volume discharged from or infiltrated into the duct system under a certain static pressure over a unit time, through the main structure or joint of duct.
2.0.13
duct system permissible leakage rate
maximum permissible air leakage as per the average unit surface area and unit the specified according to the classification of duct system
2.0.14
duct system leakage ratio
percentage ratio of the air leakage at working pressure, e.g. duct system, air conditioning equipment, deduster, to the rated air flow
2.0.15
jiggle protection support
supports and hangers or pipe racks protecting duct or conduit from jiggling displacement
2.0.16
strength test
determination and inspection on pressure resistance, e.g. pipeline, vessel, valve, carried out at specified pressure and within specified pressure holding time
2.0.17
leakage test
determination and inspection on leakage resistance, e.g. pipeline, vessel, valve, carried out at specified pressure and within holding time
2.0.18
absorption refrigeration device
refrigeration device which is thermally driven and use ammonia-water or water-lithium bromide as refrigerating medium
2.0.19
air cleanliness class
cleanliness level determined by the counts of particles of some size in unit volume of air
2.0.20
fan filter unit
cellular air supply unit for space cleaning which is composed of fan case and high efficiency filter, etc.
2.0.21
as-built
(of cleanroom) with installations set up and all powers switched on and operating but no production equipment, material and operator
2.0.22
at-rest
(of cleanroom) with installations set up, production equipment installed, operated as agreed by the owner and supplier, but with no personnel responsible for production
2.0.23
operation
(of cleanroom) with facilities operating in specified mode, at the presence of specified number of personnel, and production equipment operating in the status as agreed between the owner and the supplier
2.0.24
declared quality level
upper limit of total unqualified product(s) in inspection lot
3 Basic requirements
3.0.1 The acceptance for construction quality of ventilation and air conditioning works shall comply with not only the provisions of this code but also approved design documents and contracted items.
3.0.2 As far as works modification is concerned, a design alteration notice or technical approval from the Designer must be provided. Where the construction enterprise undertakes in-depth design for the construction drawings of ventilation and air conditioning, the drawings shall be confirmed by engineering design organization.
3.0.3 The main raw materials, as well as the material, specification and performance of finished product, semi-finished product and equipment, shall comply with the design documents and current national standards and materials or equipment that are expressly prohibited or obsoleted by the State shall not be adopted. The site acceptance of main raw material, finished product, semi-finished product and equipment shall meet the following requirements:
1 The approaching quality acceptance shall be confirmed by supervision engineer or the relevant person in-charge of the Developer.
2 Imported materials and equipment shall be provided with valid documents such as commodity inspection conformity certificate and Chinese quality certificate.
3.0.4 The new technology, new process, new material and new equipment adopted by ventilation and air conditioning works shall be provided with certificate of special technical appraisal acceptance.
3.0.5 The construction of ventilation and air conditioning works shall be carried out following established procedure and cooperate with civil engineering and other disciplines. The finished civil engineering construction relevant to ventilation and air conditioning system shall be jointly checked by the Developer (or General Contractor), Supervisor, Designer and Constructor. Organization of such joint check should be in the charge of the Developer, Supervisor or General Contractor.
3.0.6 Concealed ventilation and air conditioning works, before being concealed, shall be accepted and confirmed by the Supervisor or Developer and image information shall be kept up where necessary.
3.0.7 The acceptance for construction quality of ventilation and air conditioning division project shall be carry out by the subdivision projects listed in Table 3.0.7 and the section projects they contained, according to actual engineering conditions. Division project acceptance shall be passed provided all the subdivision projects contained are totally passed. Where a ventilation and air conditioning work is accepted as unit project or subunit project, its division projects shall be upgraded to unit project or subunit project, its subdivision projects shall be upgraded to division project, and its section projects shall be classified according to those specified in Table 3.0.7. Quality acceptance records shall meet those specified in Annex A hereof.
Table 3.0.7 Subdivision projects and section projects comprising ventilation and air conditioning division project
No. Subdivision project Section project
1 Air supply system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of swirl vent, station air supply vent and fabric duct, system commissioning
2 Exhaust system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of suction hood and other air handling equipment, installation of kitchen and toilet exhaust systems, system commissioning
3 Smoke control and exhaust system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of smoke exhaust valve (vent), normally-closed positive pressure vent and refractory duct, system commissioning
4 Dedusting system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of deduster and blowdown equipment, installation of dust hood, thermal insulation of high temperature duct, system commissioning
5 Comfort air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and assembled air conditioning unit, installation of equipment such as silencer, electrostatic deduster, heat exchanger and ultraviolet sterilizer, installation of end equipment such as variable and fixed air rate supply devices and efflux nozzle, thermal insulation of duct and equipment, system commissioning
6 Constant-temperature and humidity air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and assembled air conditioning unit, installation of equipment such as electric heater and humidifier, installation of precision air conditioning unit, thermal insulation of duct and equipment, system commissioning
7 Cleaning air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and cleaning air conditioning unit, installation of equipment such as silencer and heat exchanger, installation of end equipment such as high efficiency filter and fan filter unit, thermal insulation of duct and equipment, cleanliness testing, system commissioning
8 Underground civil defense ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, installation of special equipment such as filtration absorber, blastproof valve and explosion-proof overpressure exhaust valve, corrosion protection of duct and equipment, system commissioning
9 Vacuum cleaning system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of pipeline rapid connector, installation of fan and filter equipment, corrosion protection of duct and equipment, system pressure test and commissioning
10 Air conditioning water (heating and cooling) system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of plate heat exchanger, radiant panel and radiant heating & cooling underground pipe, installation of heat pump unit, corrosion protection and thermal insulation of pipeline and equipment, system pressure test and commissioning
11 Cooling water system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of cooling tower and water treatment equipment, installation of antifreezing heat tracing equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure test and commissioning
12 Condensate system Installation of pipeline system and components, installation of water pump and auxiliary equipment, corrosion protection and thermal insulation of pipeline and equipment, pipeline flushing, system water leakage and discharge testing
13 Ground-source heat pump heat exchange system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing, installation of buried heat exchange system and pipe network, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
14 Water-source heat pump heat exchange system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing, installation of ground water-source heat exchanger pipe and pipeline, installation of descaling equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
15 Accumulation (water & ice) system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of water tank and ice tank, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
16 Compression refrigerating (heating) equipment system Installation of refrigeration unit and auxiliary equipment, installation of refrigeration pipeline and components, loading of refrigerant, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
17 Absorption refrigerating equipment system Installation of refrigeration unit and auxiliary equipment, system vacuum testing, loading of lithium bromide solution, installation of steam piping system, installation of gas or oil equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
18 VRV (heat pump) air conditioning system Installation of outdoor unit and indoor unit, refrigerant pipeline connection and control switch installation, duct installation, condensate pipeline installation, refrigerant loading; system pressure testing and commissioning
19 Solar powered heating and air conditioning system Solar collector installation, installation of other auxiliary energy and heat exchange equipment, installation of accumulation water tank, installation of pipeline and fittings, installation of hypothermal water floor radiation heating system, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
20 Equipment automation system Installation of temperature, pressure and flow sensors, actuator installation and commissioning, function testing of smoke control system, commissioning of automatic control and system intelligence control software.
Notes:
1 The end equipment of duct system includes fan coil unit, induction unit, variable (fixed) air rate end, smoke exhaust valve (port) and floor air supply unit, medium efficiency filter, high efficiency filter and fan filter unit; other equipment includes silencer, electrostatic deduster, heater, humidifier, ultraviolet sterilization equipment and exhaust heat recoverer.
2 Terminal devices of water system include radiant panel coil, internal coils of fan coil unit and air conditioning cabinet, plate heat exchanger, etc.
3 Automatic control systems of device include various transducers, e.g. temperature, pressure and flow, actuators, automatic control, intelligent system device and software, etc.
3.0.8 The acceptance for construction quality of ventilation and air conditioning subdivision project shall be carried out by the section projects listed in Table 3.0.7 herein according to actual engineering conditions. The quality acceptance of subdivision project shall be carried out after the section projects it is affiliated are completely accepted.
3.0.9 The acceptance for construction quality of ventilation and air conditioning section project shall be carried out according to the specific provisions herein corresponding to the section project. Section projects shall adopt one-off acceptance or acceptance by times, depending on the actual conditions of construction engineering. The acceptance lots and sample quantity may be determined according to the quantity and distribution of physical materials for the project, and shall cover the entire section project. When the section project involves ducts or pipes of multiple materials and construction processes, the acceptance lots should by classified by material.
3.0.10 The sampling for quality acceptance of inspection lot shall meet the following requirements:
1 The quality acceptance of inspection lot shall be in accordance with Annex B herein The sampling assessment scheme with product percent of pass larger than or equal to 95% shall be deemed as sampling scheme I (hereinafter referred to as "Scheme I") and is mainly applicable to dominant items; the sampling assessment scheme with product percent of pass larger than or equal to 85% shall be deemed as sampling scheme II (hereinafter referred to as "Scheme II") and is mainly applicable to general items.
2 If it is found that the product sample quantity, n, required by the sampling assessment scheme exceeds the product quantity, N, of inspection lot, all the products in the entire inspection lot shall be inspected.
3 The inspection of mandatory provision shall adopt one hundred percent inspection scheme.
3.0.11 The acceptable quality for the inspection lot acceptance of section project shall meet the following requirements:
1 Where the inspected party, through self-inspection, meets the requirements of this Code in terms of the quality of inspection lot and is granted with a construction acceptance record indicating corresponding accepted quality, the construction quality acceptance by inspection lot may be carried out.
2 If one hundred percent inspection scheme is adopted, all the inspection results of dominant item quality shall be acceptable. As for general items, the quality inspection results and percent of pass by count shall not be less than 85% and no major defects shall present.
3 If the inspection adopts sampling scheme and the inspection result of inspection lot is acceptable, the lot quality acceptance shall be considered pass. Where the inspection result of sampling inspection lot does not comply with acceptable requirements, the tested party may apply for reinspection or retest.
4 Any product found unacceptable by quality acceptance shall be repaired or replaced by acceptable one.
3.0.12 The warranty period for the construction quality of ventilation and air conditioning works shall be calculated from the date on which the final acceptance is passed and last for two heating periods and cooling periods. For any construction quality problem encountered in the warranty period, the construction enterprise shall fulfill the warranty responsibilities.
3.0.13 The cleanliness grade of the clean room (area) in air cleaning and conditioning system shall meet the design requirements. The Maximum acceptable concentration of airborne particles shall be in accordance with those specified in Table D.4.6-1. The inspection of the cleanliness grade of clean room (area) shall comply with D.4 of Annex D hereof.
4 Duct making
4.1 General requirements
4.1.1 The quality acceptance of duct shall be carried out respectively by the material, processing technique and system class and shall cover such items such as the material, specification, strength, tightness and as-finished appearance quality of duct.
4.1.2 The sheets, profiles and other main materials for fabricating duct shall be subjected to acceptance for approaching the site and their quality shall meet the design requirements and the relevant requirements of current national standard and shall be supported by ex-factory inspection certificate. The finished duct selected in the engineering shall be provided with product qualification certificate or be subjected to strength and reinspections on site.
4.1.3 The specification of metallic duct shall be represented by outside diameter or outer side length, while that of nonmetallic duct and channel shall be represented by inside diameter or inner side length. The specification of circular duct shall be in accordance with those specified in Table 4.1.3-1; the specification of rectangular duct shall be in accordance with those specified in Table 4.1.3-2. Circular ducts shall preferentially adopt basic series; non-regular elliptical ducts shall refer to rectangular ducts and shall be represented by plane side length and short diameter.
Foreword ii
1 General provisions
2 Terms
3 Basic requirements
4 Duct making
4.1 General requirements
4.2 Dominant items
4.3 General items
5 Duct accessory
5.1 General requirements
5.2 Dominant items
5.3 General items
6 Duct system installation
6.1 General requirements
6.2 Dominant items
6.3 General items
7 Installation of fan and air handling equipment
7.1 General requirements
7.2 Dominant items
7.3 General items
8 Cold/heat source and auxiliary equipment installation
8.1 General requirements
8.2 Dominant items
8.3 General items
9 Installation of pipeline and equipment of air conditioning water system
9.1 General requirements
9.2 Dominant items
9.3 General items
10 Anticorrosion and thermal insulation
10.1 General requirements
10.2 Dominant items
10.3 General items
11 System commissioning
11.1 General requirements
11.2 Dominant items
11.3 General items
12 Final acceptance
Annex A Recording table for acceptance of project quality
Annex B Sampling procedures for inspection
Annex C Duct Strength and Leakage Test
Annex D Clean rooms (areas) engineering inspection and testing
Annex E Basic requirements of system commissioning
Explanation of wording in this code
List of quoted standards
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
In accordance with "Notice on Printing and Distributing Formulation and Revision Plan for Engineering Construction Standards and Codes of 2012 " (JIANBIAO [2012] No. 5) of the Ministry of Housing and Urban-Rural Development), this code is revised by the drafting group through extensive investigation and research, careful summarization of practical experience, reference to relevant international and foreign advanced standards and widely soliciting opinions.
This code consists of 12 chapters and 5 annexes, mainly including general provisions, terms, basic requirements, duct making, duct accessory, duct system installation, fan and air handling equipment installation, cold/heat source and auxiliary equipment installation, installation of pipeline and equipment of air conditioning water system, anticorrosion and thermal insulation, system commissioning and final acceptance.
The main technical contents revised in this code include:
1. The terms for acceptance of the new technology, new process, new material and new equipment for ventilation and air conditioning works are supplemented and optimized;
2. The subdivision projects of this division project are reclassified according to the principle of operation independence and functional verification;
3. The assessment method of sampling inspection by quality acceptance lot specified in the current national standard GB/T 2828.11 Sampling procedures for inspection by attributes—Part 11: Procedures for assessment of declared quality levels for small population is introduced and recommended for use;
4. The clauses regarding the determination of and modification of the comprehensive performance of project are cancelled.
Provisions printed in bold type in this code are mandatory and must be implemented strictly.
The Ministry of Housing and Urban-Rural Development is in charge of the administration of this code and the explanation of the mandatory provisions and Shanghai Installation Engineering Group Co., Ltd. is responsible for the explanation of specific technical contents. If there are any comments or suggestions during the process of implementing this code, please send them to Shanghai Installation Engineering Group Co., Ltd. (Address: No. 390, Tanggu Road, Shanghai; 200080).
Code of acceptance for construction quality of ventilation and air conditioning works
1 General provisions
1.0.1 This code is developed with a view to unifying the quality acceptance for construction of ventilation and air conditioning and guaranteeing the work safety and quality.
1.0.2 This code is applicable to construction quality acceptance of the ventilation and air conditioning for industrial and civil buildings.
1.0.3 This code shall be used in conjunction with the current national standard GB 50300 Unified Standard for Constructional Quality Acceptance of Building Engineering.
1.0.4 The requirements for constructional quality of work which are specified for ventilation and air conditioning works in engineering technical document and work contract shall not be lower than those specified in this code.
1.0.5 The construction quality acceptance for ventilation and air conditioning works shall comply with not only this code but also the current relevant standards of the nation.
2 Terms
2.0.1
ventilation works
generic term for air supply, air exhaust, smoke control/exhaust, dedusting and pneumatic conveying system works
2.0.2
air conditioning works
generic term for comfort air conditioning, constant temperature and humidity air conditioning, cleanroom air purification and air conditioning system works
2.0.3
duct
duct, made from metallic, nonmetallic sheet or other material, for ventilation.
2.0.4
nonmetallic duct
duct made from such nonmetallic materials as rigid PVC and glass reinforced plastic (GRP)
2.0.5
foil-insulant composite duct
duct with incombustible surface course, made from thermal insulation material of flame resisting grade or above
2.0.6
refractory duct
duct made from composite incombustible and fire-resistant thermal insulation materials and reaching a specific fire endurance limit
2.0.7
duct fittings
components of duct system, e.g. elbow, tee, cross, special pipe, guide vane and flange
2.0.8
duct accessory
functional parts of duct system, e.g. vent, valve, hood, cowl, silencer, air filter, inspection door and determination hole
2.0.9
air channel
channel, made from such building materials as concrete and brick, for ventilation.
2.0.10
ventilating ducts for kitchen and bathroom
channels for discharging the fume generated by cooking appliance from kitchen and foul gas from bathroom in residential building
2.0.11
design working pressure
maximum design working pressure at the main duct of system
2.0.12
air leakage rate
air volume discharged from or infiltrated into the duct system under a certain static pressure over a unit time, through the main structure or joint of duct.
2.0.13
duct system permissible leakage rate
maximum permissible air leakage as per the average unit surface area and unit the specified according to the classification of duct system
2.0.14
duct system leakage ratio
percentage ratio of the air leakage at working pressure, e.g. duct system, air conditioning equipment, deduster, to the rated air flow
2.0.15
jiggle protection support
supports and hangers or pipe racks protecting duct or conduit from jiggling displacement
2.0.16
strength test
determination and inspection on pressure resistance, e.g. pipeline, vessel, valve, carried out at specified pressure and within specified pressure holding time
2.0.17
leakage test
determination and inspection on leakage resistance, e.g. pipeline, vessel, valve, carried out at specified pressure and within holding time
2.0.18
absorption refrigeration device
refrigeration device which is thermally driven and use ammonia-water or water-lithium bromide as refrigerating medium
2.0.19
air cleanliness class
cleanliness level determined by the counts of particles of some size in unit volume of air
2.0.20
fan filter unit
cellular air supply unit for space cleaning which is composed of fan case and high efficiency filter, etc.
2.0.21
as-built
(of cleanroom) with installations set up and all powers switched on and operating but no production equipment, material and operator
2.0.22
at-rest
(of cleanroom) with installations set up, production equipment installed, operated as agreed by the owner and supplier, but with no personnel responsible for production
2.0.23
operation
(of cleanroom) with facilities operating in specified mode, at the presence of specified number of personnel, and production equipment operating in the status as agreed between the owner and the supplier
2.0.24
declared quality level
upper limit of total unqualified product(s) in inspection lot
3 Basic requirements
3.0.1 The acceptance for construction quality of ventilation and air conditioning works shall comply with not only the provisions of this code but also approved design documents and contracted items.
3.0.2 As far as works modification is concerned, a design alteration notice or technical approval from the Designer must be provided. Where the construction enterprise undertakes in-depth design for the construction drawings of ventilation and air conditioning, the drawings shall be confirmed by engineering design organization.
3.0.3 The main raw materials, as well as the material, specification and performance of finished product, semi-finished product and equipment, shall comply with the design documents and current national standards and materials or equipment that are expressly prohibited or obsoleted by the State shall not be adopted. The site acceptance of main raw material, finished product, semi-finished product and equipment shall meet the following requirements:
1 The approaching quality acceptance shall be confirmed by supervision engineer or the relevant person in-charge of the Developer.
2 Imported materials and equipment shall be provided with valid documents such as commodity inspection conformity certificate and Chinese quality certificate.
3.0.4 The new technology, new process, new material and new equipment adopted by ventilation and air conditioning works shall be provided with certificate of special technical appraisal acceptance.
3.0.5 The construction of ventilation and air conditioning works shall be carried out following established procedure and cooperate with civil engineering and other disciplines. The finished civil engineering construction relevant to ventilation and air conditioning system shall be jointly checked by the Developer (or General Contractor), Supervisor, Designer and Constructor. Organization of such joint check should be in the charge of the Developer, Supervisor or General Contractor.
3.0.6 Concealed ventilation and air conditioning works, before being concealed, shall be accepted and confirmed by the Supervisor or Developer and image information shall be kept up where necessary.
3.0.7 The acceptance for construction quality of ventilation and air conditioning division project shall be carry out by the subdivision projects listed in Table 3.0.7 and the section projects they contained, according to actual engineering conditions. Division project acceptance shall be passed provided all the subdivision projects contained are totally passed. Where a ventilation and air conditioning work is accepted as unit project or subunit project, its division projects shall be upgraded to unit project or subunit project, its subdivision projects shall be upgraded to division project, and its section projects shall be classified according to those specified in Table 3.0.7. Quality acceptance records shall meet those specified in Annex A hereof.
Table 3.0.7 Subdivision projects and section projects comprising ventilation and air conditioning division project
No. Subdivision project Section project
1 Air supply system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of swirl vent, station air supply vent and fabric duct, system commissioning
2 Exhaust system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of suction hood and other air handling equipment, installation of kitchen and toilet exhaust systems, system commissioning
3 Smoke control and exhaust system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of smoke exhaust valve (vent), normally-closed positive pressure vent and refractory duct, system commissioning
4 Dedusting system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, corrosion protection of duct and equipment, installation of deduster and blowdown equipment, installation of dust hood, thermal insulation of high temperature duct, system commissioning
5 Comfort air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and assembled air conditioning unit, installation of equipment such as silencer, electrostatic deduster, heat exchanger and ultraviolet sterilizer, installation of end equipment such as variable and fixed air rate supply devices and efflux nozzle, thermal insulation of duct and equipment, system commissioning
6 Constant-temperature and humidity air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and assembled air conditioning unit, installation of equipment such as electric heater and humidifier, installation of precision air conditioning unit, thermal insulation of duct and equipment, system commissioning
7 Cleaning air conditioning ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and cleaning air conditioning unit, installation of equipment such as silencer and heat exchanger, installation of end equipment such as high efficiency filter and fan filter unit, thermal insulation of duct and equipment, cleanliness testing, system commissioning
8 Underground civil defense ventilation system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of fan and air handling equipment, installation of special equipment such as filtration absorber, blastproof valve and explosion-proof overpressure exhaust valve, corrosion protection of duct and equipment, system commissioning
9 Vacuum cleaning system Fabrication of duct and fittings, fabrication of components, installation of duct system, installation of pipeline rapid connector, installation of fan and filter equipment, corrosion protection of duct and equipment, system pressure test and commissioning
10 Air conditioning water (heating and cooling) system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of plate heat exchanger, radiant panel and radiant heating & cooling underground pipe, installation of heat pump unit, corrosion protection and thermal insulation of pipeline and equipment, system pressure test and commissioning
11 Cooling water system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of cooling tower and water treatment equipment, installation of antifreezing heat tracing equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure test and commissioning
12 Condensate system Installation of pipeline system and components, installation of water pump and auxiliary equipment, corrosion protection and thermal insulation of pipeline and equipment, pipeline flushing, system water leakage and discharge testing
13 Ground-source heat pump heat exchange system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing, installation of buried heat exchange system and pipe network, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
14 Water-source heat pump heat exchange system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing, installation of ground water-source heat exchanger pipe and pipeline, installation of descaling equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
15 Accumulation (water & ice) system Installation of pipeline system and components, installation of water pump and auxiliary equipment, pipeline flushing and corrosion protection of pipe inside, installation of water tank and ice tank, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
16 Compression refrigerating (heating) equipment system Installation of refrigeration unit and auxiliary equipment, installation of refrigeration pipeline and components, loading of refrigerant, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
17 Absorption refrigerating equipment system Installation of refrigeration unit and auxiliary equipment, system vacuum testing, loading of lithium bromide solution, installation of steam piping system, installation of gas or oil equipment, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
18 VRV (heat pump) air conditioning system Installation of outdoor unit and indoor unit, refrigerant pipeline connection and control switch installation, duct installation, condensate pipeline installation, refrigerant loading; system pressure testing and commissioning
19 Solar powered heating and air conditioning system Solar collector installation, installation of other auxiliary energy and heat exchange equipment, installation of accumulation water tank, installation of pipeline and fittings, installation of hypothermal water floor radiation heating system, corrosion protection and thermal insulation of pipeline and equipment, system pressure testing and commissioning
20 Equipment automation system Installation of temperature, pressure and flow sensors, actuator installation and commissioning, function testing of smoke control system, commissioning of automatic control and system intelligence control software.
Notes:
1 The end equipment of duct system includes fan coil unit, induction unit, variable (fixed) air rate end, smoke exhaust valve (port) and floor air supply unit, medium efficiency filter, high efficiency filter and fan filter unit; other equipment includes silencer, electrostatic deduster, heater, humidifier, ultraviolet sterilization equipment and exhaust heat recoverer.
2 Terminal devices of water system include radiant panel coil, internal coils of fan coil unit and air conditioning cabinet, plate heat exchanger, etc.
3 Automatic control systems of device include various transducers, e.g. temperature, pressure and flow, actuators, automatic control, intelligent system device and software, etc.
3.0.8 The acceptance for construction quality of ventilation and air conditioning subdivision project shall be carried out by the section projects listed in Table 3.0.7 herein according to actual engineering conditions. The quality acceptance of subdivision project shall be carried out after the section projects it is affiliated are completely accepted.
3.0.9 The acceptance for construction quality of ventilation and air conditioning section project shall be carried out according to the specific provisions herein corresponding to the section project. Section projects shall adopt one-off acceptance or acceptance by times, depending on the actual conditions of construction engineering. The acceptance lots and sample quantity may be determined according to the quantity and distribution of physical materials for the project, and shall cover the entire section project. When the section project involves ducts or pipes of multiple materials and construction processes, the acceptance lots should by classified by material.
3.0.10 The sampling for quality acceptance of inspection lot shall meet the following requirements:
1 The quality acceptance of inspection lot shall be in accordance with Annex B herein The sampling assessment scheme with product percent of pass larger than or equal to 95% shall be deemed as sampling scheme I (hereinafter referred to as "Scheme I") and is mainly applicable to dominant items; the sampling assessment scheme with product percent of pass larger than or equal to 85% shall be deemed as sampling scheme II (hereinafter referred to as "Scheme II") and is mainly applicable to general items.
2 If it is found that the product sample quantity, n, required by the sampling assessment scheme exceeds the product quantity, N, of inspection lot, all the products in the entire inspection lot shall be inspected.
3 The inspection of mandatory provision shall adopt one hundred percent inspection scheme.
3.0.11 The acceptable quality for the inspection lot acceptance of section project shall meet the following requirements:
1 Where the inspected party, through self-inspection, meets the requirements of this Code in terms of the quality of inspection lot and is granted with a construction acceptance record indicating corresponding accepted quality, the construction quality acceptance by inspection lot may be carried out.
2 If one hundred percent inspection scheme is adopted, all the inspection results of dominant item quality shall be acceptable. As for general items, the quality inspection results and percent of pass by count shall not be less than 85% and no major defects shall present.
3 If the inspection adopts sampling scheme and the inspection result of inspection lot is acceptable, the lot quality acceptance shall be considered pass. Where the inspection result of sampling inspection lot does not comply with acceptable requirements, the tested party may apply for reinspection or retest.
4 Any product found unacceptable by quality acceptance shall be repaired or replaced by acceptable one.
3.0.12 The warranty period for the construction quality of ventilation and air conditioning works shall be calculated from the date on which the final acceptance is passed and last for two heating periods and cooling periods. For any construction quality problem encountered in the warranty period, the construction enterprise shall fulfill the warranty responsibilities.
3.0.13 The cleanliness grade of the clean room (area) in air cleaning and conditioning system shall meet the design requirements. The Maximum acceptable concentration of airborne particles shall be in accordance with those specified in Table D.4.6-1. The inspection of the cleanliness grade of clean room (area) shall comply with D.4 of Annex D hereof.
4 Duct making
4.1 General requirements
4.1.1 The quality acceptance of duct shall be carried out respectively by the material, processing technique and system class and shall cover such items such as the material, specification, strength, tightness and as-finished appearance quality of duct.
4.1.2 The sheets, profiles and other main materials for fabricating duct shall be subjected to acceptance for approaching the site and their quality shall meet the design requirements and the relevant requirements of current national standard and shall be supported by ex-factory inspection certificate. The finished duct selected in the engineering shall be provided with product qualification certificate or be subjected to strength and reinspections on site.
4.1.3 The specification of metallic duct shall be represented by outside diameter or outer side length, while that of nonmetallic duct and channel shall be represented by inside diameter or inner side length. The specification of circular duct shall be in accordance with those specified in Table 4.1.3-1; the specification of rectangular duct shall be in accordance with those specified in Table 4.1.3-2. Circular ducts shall preferentially adopt basic series; non-regular elliptical ducts shall refer to rectangular ducts and shall be represented by plane side length and short diameter.
Contents of GB 50243-2016
Foreword ii
1 General provisions
2 Terms
3 Basic requirements
4 Duct making
4.1 General requirements
4.2 Dominant items
4.3 General items
5 Duct accessory
5.1 General requirements
5.2 Dominant items
5.3 General items
6 Duct system installation
6.1 General requirements
6.2 Dominant items
6.3 General items
7 Installation of fan and air handling equipment
7.1 General requirements
7.2 Dominant items
7.3 General items
8 Cold/heat source and auxiliary equipment installation
8.1 General requirements
8.2 Dominant items
8.3 General items
9 Installation of pipeline and equipment of air conditioning water system
9.1 General requirements
9.2 Dominant items
9.3 General items
10 Anticorrosion and thermal insulation
10.1 General requirements
10.2 Dominant items
10.3 General items
11 System commissioning
11.1 General requirements
11.2 Dominant items
11.3 General items
12 Final acceptance
Annex A Recording table for acceptance of project quality
Annex B Sampling procedures for inspection
Annex C Duct Strength and Leakage Test
Annex D Clean rooms (areas) engineering inspection and testing
Annex E Basic requirements of system commissioning
Explanation of wording in this code
List of quoted standards