GB 50261-2017 PDF English
US$245.00 · In stock · Download in 9 secondsGB 50261-2017: Code for installation and commissioning of sprinkler systems Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB 50261: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 50261-2017 | English | 245 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Code for installation and commissioning of sprinkler systems
| Valid |
| GB 50261-2005 | English | RFQ |
ASK
|
10 days
|
Code for installation and commissioning of sprinkler systems
| Obsolete |
| GB 50261-1996 | English | RFQ |
ASK
|
11 days
|
Code for installation and commissioning of automatic fire-extinguishing sprinkler systems
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB 50261-2017
GB 50261-2017: Code for installation and commissioning of sprinkler systems---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB50261-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
Code for installation and
commissioning of sprinkler systems
Issued on. MAY 27, 2017
Implemented on. JANUARY 01, 2018
Issued by. Ministry of Housing and Urban-Rural Development of the
People's Republic of China;
General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China.
Table of Contents
Foreword... 6
1 General provisions... 8
2 Terminologies... 9
3 Basic requirements... 10
4 Installation and construction of water supply facilities... 16
5 Installation of pipeline network and system components... 23
6 System pressure testing and flush washing... 50
7 System commissioning... 55
8 System acceptance... 59
9 Maintenance... 66
Appendix A -- Classification for subprojects and subunits of sprinkler systems
... 70
Appendix B -- Construction site quality management inspection records... 71
Appendix C -- Quality inspection records for sprinkler systems installation
processes... 72
Appendix D -- Inspection records for quality control documentation of sprinkler
systems... 76
Appendix E -- Records of acceptance for sprinkler system projects... 78
Appendix F -- Classifications for deficiencies in sprinkler system acceptance
... 81
Appendix G -- Inspection items for maintenance and supervision of sprinkler
systems... 82
Explanation of wording in this Code... 83
List of quoted standards... 84
1 General provisions
1.0.1 This Code is formulated with view to ensuring the construction quality and
use function of sprinkler system (hereinafter referred to as system), reducing
fire hazard and protecting personal and property safety.
1.0.2 This Code is applicable to the construction, acceptance, maintenance and
management of sprinkler system arranged in industrial and civil buildings.
1.0.3 The construction, acceptance, maintenance and management of sprinkler
system shall not only meet those specified in this Code, shall also comply with
the requirements of relevant national current standards and codes.
2 Terminologies
2.0.1 condition of standing by
The state with the performance and service condition of sprinkler system
complying with relevant technical requirements and enabling immediate action
and sprinkling in case of fire.
2.0.2 system components
A general term for special products such as sprinkler, alarm valve set, pressure
switch, water flow indicator, fire pump and pressure maintenance device.
2.0.3 equipment for supervisory and alarm control services
The equipment supervising the pressure, water level, water flow and valve
opening/closing state of sprinkler system and capable of sending out control
signal and alarm signal.
2.0.4 pressure maintenance pumps
A kind of special pump maintaining the pressure of sprinkler system under the
condition of standing by within the range of design working pressure.
3 Basic requirements
3.1 Quality management
3.1.1 The subproject and subunit of sprinkler system shall be classified
according to Appendix A.
3.1.2 Construction scheme for system construction shall be prepared according
to the design requirements. Necessary technical standard for construction,
sound construction quality management system and work quality inspection
system shall be provided on construction site, and relevant records shall be
filled in according to the requirements of Appendix B.
3.1.3 The following conditions shall be provided prior to sprinkler system
construction.
3.1.6 The quality control data of sprinkler system shall be filled in according to
the requirements of Appendix D.
3.1.7 Prior to sprinkler system construction, site inspection shall be carried out
for system components, pipe fittings and other equipment and materials, and
those rejected shall not be used.
3.2 Material and equipment management
3.2.1 Prior to sprinkler system construction, site inspection shall be carried out
for the adopted system components, pipe fittings and other equipment and
materials, and the following requirements shall be met.
3.2.9 Automatic monitoring devices such as pressure switch, flow detector,
automatic exhaust valve, reducing valve, relief valve, multi-function pump
control valve, check valve, signal valve, pump adapter as well as water level,
4 Installation and construction of water supply facilities
4.1 General requirements
4.1.1 As for installation of such water supply facilities as fire pump, fire tank, fire
reservoir, pressure fire water supply equipment and fire department connection
as well as their auxiliary pipelines, the dirt and sundries inside shall be cleaned.
In case that the installation is interrupted, the opening shall be sealed.
4.2 Installation of fire pump
Dominant item
4.2.1 The specification and type of fire pump shall meet the design
requirements and shall be provided with product qualification certificate and
installation and operation instruction.
4.2.2 Installation of fire pump shall meet the requirements of the current national
standards GB 50231 General Code for Construction and Acceptance of
Mechanical Equipment Installation Engineering and GB 50275 Code for
Construction and Acceptance of Computer, Fan and Pump Installation
Engineering.
4.2.5 For the outlet pipe of water pump, instrument used for testing water supply
pressure and flow rate as well as system flow rate and pressure detection
device composed of drainage pipelines shall be installed or interface with flow
rate and pressure detection device shall be reserved; the water-passing
capacity of interface shall be consistent with the water supply capability of
system.
4.3 Installation of fire tank and construction of fire reservoir
I Dominant item
4.3.1 Construction and installation of fire reservoir and fire tank shall meet the
requirements of the current national standards GB 50141 Code for Construction
and Acceptance of Water and Sewerage Structures and GB 50242 Code for
Acceptance of Construction Quality of Water Supply Drainage and Heating
Works. Arrangement mode and position of water level display device of fire
reservoir and elevated fire tank shall meet the requirements of the design
document.
Inspection method. observing and inspecting with ruler.
4.5.3 Underground fire department connection shall be installed with the
distance from water inlet to shaft cover not greater than 0.4 m and not less than
the radius of shaft cover.
4.5.4 Water-proof and drainage measures shall be taken for the masonry of
underground fire department connection shaft.
5 Installation of pipeline network and system components
5.1 Installation of pipeline network
I Dominant item
5.1.1 Where steel pipes are adopted for pipeline network, the material shall
meet the requirements of the current national standards GB/T 8163 Seamless
Steel Tubes for Liquid Service and GB/T 3091 Welded Steel Pipes for Low
Pressure Liquid Delivery.
5.1.4 Where coating steel pipes are adopted for pipeline network, the material
shall meet the requirements of the current national standard GB 5135.20
Automatic Sprinkler System - Part 20.Coating Steel Pipe.
5.1.5 Where chlorinated polyvinyl chloride (PVC-C) pipelines are adopted for
pipeline network, the material shall meet the requirements of the current
national standard GB 5135.19 Automatic Sprinkler System - Part 19.Plastic
5.1.6 After pipeline connection, the discharge section area shall not be reduced.
As for installation of hot-dip galvanized steel pipe and coating steel pipe,
threaded and grooved pipe fitting or flange shall be adopted for connection.
5.1.7 As for installation of thin-walled stainless steel pipe, GTHY, clip bulgy,
entrapment, groove or flange shall be adopted for connection.
5.1.17 In case of transverse installation, pipeline should be arranged at a
gradient of 2 ‰ ~ 5 ‰ and shall slope toward the drainage pipe; where it is
difficult to empty water with drainage pipe in partial areas, corresponding
drainage measures shall be taken. Where the quantity of sprinklers is less than
or equal to 5, plugs may be added at indentation of pipeline; where it is greater
than 5, drainage pipe with valve should be installed.
5.1.20 Installation of coating steel pipe shall meet the following relevant
requirements.
5.4.8 Installation of throttle pipe and pressure-reducing orifice plate shall meet
the design requirements.
6 System pressure testing and flush washing
6.1 General requirements
6.1.1 After the pipeline network is installed, it shall be subject to strength testing,
tightness testing and flush washing.
Inspection quantity. 100 % inspection.
Inspection method. inspecting records on strength testing, tightness testing and
flush washing.
6.2 Water pressure testing
I Dominant item
6.2.1 Where the design working pressure of the system is less than or equal to
1.0 MPa, the pressure of water pressure strength testing shall be 1.5 times of
the design working pressure and shall not be less than 1.4 MPa; where the
design working pressure is greater than 1.0 MPa, the pressure of water
pressure strength testing shall be the design working pressure plus 0.4 MPa.
6.2.4 During water pressure testing, the ambient temperature should not be
lower than 5 °C; where it is lower than 5 °C, anti-freezing measures shall be
7 System commissioning
7.1 General requirements
7.1.1 System commissioning shall be carried out after completion of the system
construction.
7.2.6 During commissioning, water discharged from the system shall be
completely drained away through drainage facilities.
7.2.7 Linkage testing shall meet the following requirements and shall be
recorded in accordance with the requirements of Table C.0.4 in Appendix C.
8 System acceptance
8.0.1 Project acceptance must be carried out upon system completion; if the
acceptance is rejected, the system shall not be put into service.
8.0.3 During system acceptance, the construction organization shall provide
the following information.
8.0.4 The inspection and acceptance of system water supply shall meet the
following requirements.
8.0.13 The acceptance and judgment of system project quality shall meet the
following requirements.
9 Maintenance
9.0.1 Sprinkler system shall be provided with management, detection and
maintenance specification, and shall ensure that the system is maintained at
condition of standing by. Maintenance work shall be carried out according to
those specified in Appendix G.
9.0.5 Solenoid valve shall be inspected and subject to starting testing monthly,
when its operation is abnormal, it shall be replaced timely.
9.0.6 Drainage testing shall be carried out for all terminal water test valves and
water release test valve beside alarm valve of the system quarterly to inspect
whether the start, alarm function and water outflow condition of the system are
normal. See Table 9.0.6 for the inspection contents.
9.0.8 The control valve of the inlet pipes in outdoor valve well shall be inspected
quarterly to make sure that it is at full open state.
9.0.9 When failure occurs to the sprinkler systems and it is necessary to cut off
the water supply for repair, it is required to report to competent watchkeeper
and get permission from the maintenance principal who will supervise on site,
and the construction cannot be started before precaution measures are taken.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB 50261-2017 be delivered?Answer: The full copy PDF of English version of GB 50261-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB 50261-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB 50261-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 50261-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB 50261-2017?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 50261-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB 50261-2017?A step-by-step guide to download PDF of GB 50261-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB 50261-2017".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |