|
US$1379.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 55009-2021: Code for design of city gas engineering
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 55009-2021 | English | 1379 |
Add to Cart
|
8 days [Need to translate]
|
Code for design of city gas engineering
| Valid |
GB 55009-2021
|
PDF similar to GB 55009-2021
Basic data | Standard ID | GB 55009-2021 (GB55009-2021) | | Description (Translated English) | Code for design of city gas engineering | | Sector / Industry | National Standard | | Classification of Chinese Standard | P47 | | Word Count Estimation | 76,713 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation | GB 55009-2021: Code for design of city gas engineering---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
1 General
1.0.1 In order to promote the high-quality development of urban and rural gas, prevent and reduce gas safety accidents, ensure continuous and stable gas supply, and protect personal, property and public safety, this specification is formulated.
1.0.2 Gas engineering projects in cities, towns and villages must implement this specification. This specification does not apply to the following engineering projects.
1 The long-distance gas transmission pipeline project before the town gas gate station;
2 Gas engineering projects for internal production of industrial enterprises;
3 Biogas and straw gas production and utilization projects;
4 Gas application projects on ocean and river ships, railway vehicles, automobiles and other means of transportation.
1.0.3 Gas engineering should realize continuous and stable gas supply and complete operation, and should follow the following principles.
1 Comply with national energy, ecological environment, land use, disaster prevention and reduction, emergency management and other policies;
2 to protect personal, property and public safety;
3 Encourage engineering technology innovation;
4 Actively adopt modern information technology;
5 Improve the quality of project construction and the level of operation and maintenance.
1.0.4 Whether the technical methods and measures adopted in the project construction meet the requirements of this specification shall be judged by the relevant responsible parties. Among them, innovative technical methods and measures should be demonstrated and meet the performance requirements in this specification.
2 basic rules
2.1 Scale and layout
2.1.1 The scale of gas consumption for gas projects should be determined based on conditions such as urban and rural development, population size, user demand, and gas supply resources, through market surveys, scientific forecasts, and comprehensive analysis combined with gas consumption indicators and gas consumption laws.
2.1.2 The selection of gas source shall be based on the national energy policy, following the principle of energy conservation, environmental protection, stability and reliability, considering the available resource conditions, and shall be determined by technical and economical demonstration.
2.1.3 The gas supply system shall have a gas supply capacity reserve to meet peak shaving supply and emergency supply. The gas supply capacity reserve should be determined according to the requirements of gas source conditions, supply and demand balance, system scheduling and emergency response.
2.3.5 During the operation process of gas facilities that may leak gas, special personnel should be supervised, and no single operation is allowed. Before the cause of the gas leakage is found out or the leakage is not eliminated, effective safety measures should be taken until the gas leakage is eliminated.
2.3.6 On-site operation of gas facilities shall comply with the following regulations.
1 Operators should be proficient in the knowledge and skills of gas characteristics, related processes and emergency disposal;
2 The operation area should be marked for operation or emergency repair work, and guardrails and warning signs should be set up at the boundary of the area;
3 Operators or emergency repair personnel should wear anti-static work clothes and other protective equipment, and should not put on, take off and take off protective equipment in the work area;
4 Do not carry mobile phones, matches or lighters and other ignition sources in the operation or emergency repair work area, and do not wear clothing that is prone to sparks.
2.3.7 Process wastes that do not meet the emission standards during the normal operation of gas facilities shall not be discharged directly.
3 Gas quality
3.0.1 The gas quality supplied by the gas project shall meet the following requirements.
1 It should meet the gas classification and gas quality standards stipulated by the state;
2.It should meet the needs and conditions of various users and gas consumption;
3.Calorific value (calorific value) should be kept stable;
4 Changes in components should ensure the normal operation of the burner.
3.0.2 The gas supplied by the system shall determine the base calorific value (calorific value), and the variation of the calorific value (calorific value) shall be within ±5% of the reference calorific value (calorific value). Gas parameters such as gas composition and impurity content, dew point temperature, and gas contact point pressure should be determined according to gas source conditions and gas demand.
3.0.3 The quality of natural gas and shale gas, coalbed methane, coal-based natural gas, biomass gas, etc. delivered according to the quality of natural gas shall meet the following requirements.
1 The quality of natural gas shall meet the requirements in Table 3.0.3.
2 Under the pressure and temperature conditions of the natural gas transfer point, the hydrocarbon dew point of the natural gas should be 5°C lower than the minimum ambient temperature; there should be no solid, liquid or gelatinous substances in the natural gas.
3.0.4 The quality of liquefied petroleum gas shall meet the requirements in Table 3.0.4.
3.0.5 The quality of artificial gas shall meet the requirements in Table 3.0.5.
3.0.6 When the quality of the gas source does not meet the quality requirements specified in Articles 3.0.2 to 3.0.5 of this code, the gas shall be processed.
4.2.15 The power supply of gas plants and stations shall meet the requirements of normal production and fire protection. The electricity used for equipment related to production safety and fire protection in the station shall be powered by two circuits, or single circuits with backup power supply.
4.2.16 The gas station instrument control system should be equipped with an uninterruptible power supply device.
4.2.17 In gas plants and stations where the leakage concentration of combustible gas may reach 20% of the lower explosion limit of gas facilities or buildings (structures), fixed combustible gas concentration alarm devices shall be installed.
4.2.18 The electrical and instrumentation devices installed in the explosion-hazardous environment in the gas station shall have the explosion-proof performance corresponding to the explosion-hazardous level of the area.
4.2.19 In the explosion-hazardous area of the gas plant and station, the storage tanks, equipment and pipelines that may cause static electricity hazards should adopt static electricity dissipation measures.
4.2.20 When entering the gas storage tank area, surge room (box), compressor room, metering room, bottle group gasification room, valve room and other places where gas may leak, the concentration of combustible gas, harmful gas and oxygen should be tested to meet the Access is only possible under safe conditions. The emergency evacuation route diagram shall be marked in a conspicuous position in the gas plant and station.
4.2.21 Except for special gas transport vehicles and emergency vehicles equipped with fire extinguishing devices, other motor vehicles are not allowed to enter the liquid gas storage and filling area.
4.3 Tanks and cylinders
4.3.1 Liquefied natural gas and liquefied petroleum gas storage tanks with a volume greater than 10m3 should not be fixedly installed in buildings. Filled or gas-filled LNG cylinders must not be stored in the building.
4.3.2 Gas storage tanks should be equipped with monitoring devices such as pressure, temperature, tank capacity or liquid level display, and should have an over-limit alarm function. Atmospheric pressure storage tanks for liquefied natural gas should be equipped with density monitoring devices. Gas storage tanks should be equipped with safety relief devices.
4.3.3 The liquid phase inlet and outlet pipes of LNG and LPG storage tanks shall be provided with emergency cut-off valves interlocked with the liquid level control of the storage tanks.
4.3.4 The foundation of low-temperature gas storage tanks and equipment shall be equipped with soil temperature detection devices, and measures to prevent soil frost heaving shall be taken.
4.3.5 When the height of the gas storage tank exceeds the relevant local height limit regulations, flight obstruction lights and signs shall be provided.
4.3.6 Effective anti-settlement and anti-seismic measures shall be taken for the inlet and outlet pipelines of gas storage tanks, and cut-off devices shall be installed.
4.3.7 The safety valve of the gas storage tank shall be selected according to the characteristics of the stored gas and the conditions of use, and shall meet the following requirements.
1 As for the safety valve of LNG storage tank, austenitic stainless steel spring-closed full-opening safety valve shall be selected.
2 The safety valve of the liquefied petroleum gas tank shall be a spring-closed full-opening safety valve.
3 For LNG and LPG storage tanks with a volume greater than or equal to 100m3, two or more safety valves shall be installed.
4.3.8 Other flammable medium storage tanks shall not be arranged in the protection embankment of the liquid gas tank area. Filling ports for gas cylinders shall not be set in the dikes of LNG and LPG storage tanks.
4.3.9 For low-pressure wet gas storage tanks in severe cold and cold regions, measures to prevent freezing of water seals shall be taken.
4.3.10 Low-pressure dry-type thin oil sealed storage tanks shall be equipped with anti-rotation devices, and the contact surface of the anti-rotation devices shall be protected from sparks caused by impact.
4.3.11 The tanker should not directly fill the gas cylinders or pour the gas in the gas cylinders into other gas cylinders.
4.3.12 Gas cylinders should be traceable, and qualified gas cylinders should be used for filling. After the gas cylinder is filled, the gas cylinder should be checked for leaks, weight or pressure. Standard and obvious warning labels and filling labels should be pasted on the qualified gas cylinders filled.
5Pipelines and pressure regulating facilities
5.1 Transmission and distribution pipeline
5.1.1 The transmission and distribution pipelines shall be classified according to the maximum working pressure and shall comply with the provisions in Table 5.1.1.
5.1.2 Gas transmission and distribution pipelines shall be arranged in accordance with the principle of reliable gas supply in light of urban and rural roads and terrain conditions, and shall meet the requirements of comprehensive layout of urban and rural pipelines. The pressure level system of the transmission and distribution pipeline network system should be configured in combination with user needs, gas consumption scale, peak shaving requirements, and laying conditions.
5.1.3 Liquid gas transmission and distribution pipelines, gaseous gas transmission and distribution pipelines with high pressure A and above should not be laid in residential areas, commercial areas and other densely populated areas, airport stations and ports, and other hazardous chemical production and storage areas.
5.1.4 The design service life of the transmission and distribution pipeline shall not be less than 30 years.
5.1.5 The materials of transmission and distribution pipelines and accessories shall be determined according to the requirements of the pipeline’s service conditions and laying environment on mechanical properties such as strength and impact resistance.
5.1.6 The protection scope of transmission and distribution pipelines and auxiliary facilities shall be determined according to the pressure classification of the transmission and distribution system and the surrounding environmental conditions. The minimum scope of protection shall comply with the following provisions;
1 The low-pressure and medium-pressure transmission and distribution pipelines and ancillary facilities shall be the area within 0.5m around the outer edge;
Secondary high-pressure transmission and distribution pipelines and ancillary facilities shall be within 1.5m around the outer edge;
3 The transmission pipelines and auxiliary facilities of high pressure and above high pressure shall be within 5.0m around the outer edge.
5.1.7 The control range of transmission and distribution pipelines and ancillary facilities shall be determined according to the pressure classification of the transmission and distribution system and the surrounding environmental conditions. The minimum control range shall meet the following requirements;
1 The low-pressure and medium-pressure transmission and distribution pipelines and auxiliary facilities shall be within the range of 0.5m~5.0m around the outer edge;
Secondary high-pressure transmission and distribution pipelines and auxiliary facilities shall be within the range of 1.5m~15.0m around the outer edge;
3 The transmission and distribution pipelines and auxiliary facilities of high pressure and above high pressure shall be within the range of 5.0m ~ 50.0m around the outer edge.
5.1.8 Within the scope of protection of transmission and distribution pipelines and ancillary facilities, the following activities that endanger the safety of transmission and distribution pipelines and ancillary facilities are prohibited.
1 construction of buildings, structures or other facilities;
2 Carry out operations such as blasting and soil extraction;
3 dumping and discharging corrosive substances;
4 Place flammable and explosive dangerous goods;
5.Planting plants whose root system reaches the buried part of the pipeline may damage the pipeline body and anti-corrosion layer;
6 Other activities that endanger the safety of gas facilities.
5.1.9 When engaging in pipeline laying, piling, jacking, excavation, drilling and other activities that may affect the safety of gas facilities within the protection scope of transmission and distribution pipelines and auxiliary facilities, a gas facility protection plan should be formulated with the gas operating unit and safety protection measures should be taken.
5.1.10 Within the scope of control of transmission and distribution pipelines and ancillary facilities, engage in
For the activities listed in Article 5.1.8, or when conducting pipeline crossing operations, a gas facility protection plan should be formulated with the gas operating unit and safety protection measures should be taken. In the minimum control range
When working outside the surrounding area, the safety of transmission and distribution pipelines and auxiliary facilities should still be guaranteed.
5.1.11 The minimum nominal wall thickness of steel pipes shall not be less than those specified in Table 5.1.11.
5.1.12 Polyethylene and other polymer material pipelines that are not resistant to high temperature and ultraviolet light shall not be used for outdoor transmission and distribution pipelines.
5.1.13 Buried transmission and distribution pipelines shall not affect the structural safety of surrounding buildings (structures), and shall not be laid under buildings and large structures on the ground (except overhead buildings and structures).
5.1.14 The buried depth of the buried transmission and distribution pipeline shall be determined according to conditions such as frozen soil layer and road surface load. The minimum direct burial depth of transmission and distribution pipelines under the roadway shall not be less than 0.9m, and the minimum direct burial depth of transmission and distribution pipelines under sidewalks and fields shall not be less than 0.6m.
5.1.15 When the transmission and distribution pipelines are laid overhead, measures should be taken to prevent vehicle collisions and other external force damage.
5.1.16 Transmission and distribution pipelines should not be laid in underground structures such as drainage pipes (ditches), water supply pipes, heating pipes, cable trenches, urban traffic tunnels, urban rail transit tunnels, and underground pedestrian passages. When it is really necessary to pass through, effective protective measures should be taken.
5.1.17 When transmission and distribution pipelines cross railways, highways, rivers and main arterial roads, protective measures that do not affect traffic and water conservancy facilities and ensure the safety of transmission and distribution pipelines should be taken.
5.1.18 When the river bottom passes through the transmission and distribution pipeline, the covering soil thickness from the pipeline to the river bed shall be determined according to the water scour condition and the planned river bed elevation. For navigable rivers, the depth requirements for dredging and anchoring shall be met. The upstream and downstream positions of the transmission and distribution pipelines crossing both sides of the river should be marked.
5.1.19 The cut-off valves on the transmission and distribution pipelines should be set according to the pipeline laying conditions and the principles of convenient maintenance and debugging, timely and effective accident control.
5.1.20 For buried steel transmission and distribution pipelines, the corrosion control measures of external anti-corrosion coating and cathodic protection system shall be adopted. The cathodic protection system for new transmission and distribution pipelines should be implemented at the same time as the transmission and distribution pipelines, and should be put into use at the same time.
5.1.21 Before the buried steel transmission and distribution pipelines are buried, a 100% visual inspection of the anti-corrosion layer shall be carried out, and defects such as bubbles, damage, cracks, and peeling shall not appear on the surface of the anti-corrosion layer. If it does not meet the quality requirements, it should be reworked until it is qualified.
5.1.22 The outer anti-corrosion layer of the transmission and distribution pipeline shall be kept intact and shall be inspected regularly. The cathodic protection system should not be interrupted during the normal operation of the transmission and distribution pipeline.
5.1.23 The connections of polyethylene pipes shall not be threaded or bonded. Connections must not be heated with an open flame.
5.1.24 After the installation of transmission and distribution pipelines, pipeline cleaning, strength test and tightness test must be carried out, and shall be qualified.
5.1.25 During the strength test and tightness test of the transmission and distribution pipeline, the defects found must be treated after the test pressure drops to atmospheric pressure, and the test should be carried out again after treatment.
5.1.26 Before and after the maintenance of transmission and distribution pipelines and equipment, a comprehensive inspection of residual gas in surrounding manholes, underground pipelines and buildings (structures) should be carried out.
5.1.27 The transmission and distribution pipelines and unattended pressure regulating facilities should be regularly inspected. For transmission and distribution pipelines that do not meet the conditions for safe use, they should be updated, modified, repaired or stopped in time.
5.1.28 Along the transmission and distribution pipeline...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 55009-2021_English be delivered?Answer: Upon your order, we will start to translate GB 55009-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB 55009-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB 55009-2021_English will be deemed to be sold to your employer/organization who actually pays 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. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|