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GB 50243-2016: Code of acceptance for construction quality of ventilation and air conditioning works
GB 50243-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50243-2016
Code of acceptance for construction quality of
ventilation and air conditioning works
Issue date: October 25, 2016 Implementation date: July 1, 2017
Issued by: Ministry of Housing and Urban-Rural Development of the
People's Republic of China;
General Administration of Quality Supervision, Inspection
and Quarantine.
Table of Contents
Foreword ... 6
1 General provisions ... 7
2 Terms ... 7
3 Basic requirements ... 10
4 Duct making ... 15
4.1 General requirements ... 15
4.2 Dominant items ... 17
4.3 General items ... 26
5 Duct accessory ... 39
5.1 General requirements ... 39
5.2 Dominant items ... 39
5.3 General items ... 42
6 Duct system installation ... 46
6.1 General requirements ... 46
6.2 Dominant items ... 47
6.3 General items ... 51
7 Installation of fan and air handling equipment... 58
7.1 General requirements ... 58
7.2 Dominant items ... 58
7.3 General items ... 63
8 Cold/heat source and auxiliary equipment installation ... 70
8.1 General requirements ... 70
8.2 Dominant items ... 71
8.3 General items ... 75
9 Installation of pipeline and equipment of air conditioning water system... 80
9.1 General requirements ... 80
9.2 Dominant items ... 80
9.3 General items ... 85
10 Anticorrosion and thermal insulation ... 97
10.1 General requirements ... 97
10.2 Dominant items ... 97
10.3 General items ... 98
11 System commissioning ...101
11.1 General requirements ... 101
11.2 Dominant items ... 102
11.3 General items ... 107
12 Final acceptance ...110
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
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
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...