Gas Installation Code Requirements, Natural Gas Installation Specifications and Requirements 2022

Gas water heaters can only be installed outdoors, verandahs, balconies, well-ventilated kitchens or non-living rooms, but it is strictly forbidden to install them in bedrooms, basements, bathrooms (except for balanced water heaters), near stairs and safety exits (no restrictions beyond 5 meters), storage places for flammable and explosive materials, rooms with corrosive media, electrical wiring and electrical equipment. The room where the water heater is installed should meet the following requirements: the height of the room should not be less than meters.

The upper part of the water heater shall not have power open wires, electrical equipment and flammable materials, and the horizontal clear distance between the water heater and the electrical equipment shall be greater than 300 mm, and there shall be a safety distance of not less than 200 mm around it; The water heater should not be sealed in the wall cabinet, if the water heater is installed in the wall cabinet or closet, it can not fully support the combustion air, and the result is incomplete combustion, resulting in poisoning accidents.

The 2022 natural gas installation specifications and requirements are as follows:

1. Household gas appliances:

1. Home users should choose low-pressure combustion appliances. Do not install devices or accessories other than the factory product on the gas appliance that may affect the performance of the gas appliance.

2. The gas appliances of household users should be equipped with flame-out protection devices. The gas category indicated on the nameplate of the gas appliance should be consistent with the gas category of **. The place of use shall comply with the following provisions:

It should be installed in kitchens, balconies, special rooms and other places that meet the conditions for safe use of gas, such as kitchens, balconies, and special rooms with good ventilation, water supply and exhaust conditions, and easy maintenance and operation. It shall not be installed in bedrooms, guest rooms, or other rooms where people live and rest, or in evacuation places of buildings.

When the number of gas appliances used in the same field is increased or the gas is changed from another fuel, the gas environmental conditions of the gas installation site shall be met.

3. In-line gas water heaters shall not be installed indoors. Gas heating water heaters and Iwajin semi-enclosed water heaters are strictly forbidden to be installed in bathrooms and toilets.

4. The walls, floors, countertops, etc. adjacent to the gas appliances should be non-combustible materials. Sufficient spacing should be carefully maintained between the burner and the combustible or flame-retardant walls, floors, and furniture, or other effective protective measures should be taken.

Second, the pipeline gas supply method should be adopted;

1. When the building height is greater than 100m, a gas leakage alarm device should be set up in the gas use place, and an emergency automatic shut-off device should be set at the gas inlet pipe.

2. Household users are not allowed to use gas Chanjing combustion direct heating equipment.

3. When the household user's pipeline or liquefied petroleum gas cylinder regulator is connected with the gas appliance by a hose, a special gas appliance should be used to connect the hose. The service life of the hose should not be less than the scrap life of the gas appliance.

4. The connecting hose of the gas appliance should not pass through the wall, doors and windows, ceiling and ground, and the length should not be greater than and there should be no joints.

5. The household user pipeline should be provided with a safety device that can cut off the gas supply to the stove when the pipeline pressure is lower than the limit value or the flow rate of the pipeline connected to the stove is higher than the limit value; The setting position should be determined according to the performance requirements of the safety device.

When using liquefied petroleum gas cylinders for gas supply, the following provisions shall be met:

1. Do not use open flame leak test.

2. Do not disassemble and repair angle valves and pressure regulators.

3. Do not pour out the liquefied petroleum gas residue in the bottle.

4. Do not use fire, steam, hot water and other heat sources to heat the cylinder.

5. The cylinder shall not be used upside down.

6. Do not use cylinders to pour gas into each other.

7. Household users shall not use gas as a raw material for production.

1. Pipelines, pipe fittings, pipeline accessories, valves and other materials used in indoor gas pipelines shall comply with the provisions of the design documents, and the pre-installation inspection shall be carried out in accordance with the current national standards, and unqualified ones shall not be used;

2. Before the installation of indoor gas pipelines, the construction project should be able to meet the requirements of pipeline construction and installation;

3. The installation of gas pipelines should be prefabricated and installed according to the design and construction drawings.

Attention should be paid to the installation of gas pipelines:

1. When the natural gas in the community is installed, the gas company will turn on the gas and let it enter the home of the owner of the community through the pipeline for normal use. Therefore, at this time, individuals must not dismantle and reinstall their gas pipelines without permission, so as not to bring danger, if there is a problem, be sure to contact a professional to deal with it.

2. The indoor natural gas equipment is installed by professionals, and the location of the equipment is also in the best condition. At this time, it is forbidden for the owner to modify and dismantle the natural gas equipment privately, otherwise it is easy to cause damage to the equipment and cause gas leakage, which brings great danger to the family and is not conducive to normal home life.

3. The installation of the gas meter should also be paid attention to, the location must be selected correctly, in fact, it cannot be installed in a humid environment, and it cannot be too close to the power supply, otherwise it will affect the normal operation. Moreover, in the location where the gas meter is installed, there should be a good ventilation effect, and waterproof measures should be taken to avoid accidents in later use.

Legal basisArticle 2 of the Regulations of the People's Republic of China on the Administration of Urban Gas.

These Regulations shall apply to urban gas development planning and emergency support, gas operation and services, gas use, gas facility protection, gas safety accident prevention and treatment, and related management activities。 These Regulations do not apply to the production and import of natural gas and liquefied petroleum gas, the pipeline transportation of natural gas outside the city gate station, the use of gas as a raw material for industrial production, and the production and use of biogas and straw gas. The term "gas" as used in these Regulations refers to gaseous fuels that are used as fuels and meet certain requirements, including natural gas (including coalbed methane), liquefied petroleum gas and artificial gas.

Legal analysis: According to the requirements of the notice of the Ministry of Construction on the issuance of the "2000-2001 National Standard Formulation and Revision Plan for Engineering Construction" (Jianbiao No. 87), the "Urban Gas Design Code" GB50028-93 was jointly revised by the North China Design and Research Institute of Municipal Engineering of China and relevant units. In the process of revision, the compilation team carried out extensive investigation and research in accordance with the relevant national policies and the actual situation of China's urban gas, conscientiously summed up the experience of China's urban gas engineering construction and standard implementation in the past ten years, absorbed the advanced normative achievements of developed countries in the world, carried out necessary special research and technical seminars, and extensively solicited the opinions of relevant units across the country, and finally reviewed and finalized the draft by the Ministry of Construction in conjunction with relevant departments.

Legal basis: Code for Design of Urban Gas (GB50028-2006).

Concealed gas pipelines in residential buildings refer to gas pipelines hidden in cabinets, ceilings, pipe trenches, etc.

In order to make the indoor concealed gas pipes of commercial and industrial enterprises easy to install and maintain, and to extend the service life to achieve the purpose of safety and reliability, the provisions put forward laying methods and measures.

The indoor horizontal trunk pipe of civil buildings should not be buried in the underground and ground concrete layers, mainly for corrosion prevention and easy maintenance. Gas pipelines for industrial and laboratory use can be buried in concrete floors, according to the provisions of the Building Code of the former Soviet Union.

This article stipulates that the net distance between electricity meters, electrical sockets, power switches and gas pipelines is the practical experience of Shanghai, Hong Kong and other places in China, and the others are the provisions of the "Building Regulations" of the former Soviet Union.

In order to prevent damage to gas pipes when the house settles and to facilitate the replacement of pipes during overhaul, as well as the expansion and contraction of gas pipes due to changes in indoor temperature, the provisions stipulate that gas pipes "must" be installed in casings when passing through load-bearing walls, floors or floors.

The purpose of setting up the discharge pipe is to purge the air and impurities in the accumulated gas pipeline when it is used for the first time or when it is not used for a long time and then used again for the first time in the workshop, boiler room and large and medium-sized gas equipment of industrial enterprises. When the furnace is stopped, if the main valve is not closed tightly, the gas leaking into the pipeline can be released through the discharge pipe to avoid accidents caused by gas entering the furnace and flue.

The gas pipeline installation code has the following requirements:

1.Pipeline design: The design of gas pipelines needs to comply with relevant national regulations. In the design, it is necessary to carry out reasonable branches and layouts of the pipeline according to the required gas volume, use pressure and other factors to ensure smooth airflow and stable pressure.

3.Installation quality: Gas pipelines should be constructed in strict accordance with national norms, standards and requirements during installation. It should be avoided that the cutting, welding and other operations of the pipe will have a negative impact on the pipe.

4.Explosion-proof measures: Because the gas itself is the most dangerous, explosion-proof measures are required in the pipeline installation, such as installing valves, inspection holes, alarm systems, etc.

5.Ventilation requirements: Since gas will produce a certain amount of harmful substances during use, it will also produce a certain amount of air consumption, so attention should be paid to ventilation requirements when installing gas pipelines to ensure good ventilation.

In general, in the installation of gas pipelines, special attention should be paid to safety and environmental protection. In order to ensure safety and prevent accidents, a thorough construction plan should be designed before installation, and experienced professionals should carry out the construction.