This regulation is formulated in order to correctly, effectively and safely use natural gas and standardize the operation and management of natural gas.

2. Scope:

Suitable for natural use management within the company.

3. Definition:

not have

4. Powers and responsibilities:

The energy management department is the maintenance and management unit of natural gas, and must carry out operation and management in accordance with this specification.

5. Work content

5. 1 workflow:

5. 1. 1 plenum:

5. 1. 1. 1 Before gas transmission, check and confirm that the gas supply pressure of the natural gas pressure regulating station is within the range of 30KP-50KP.

5. 1. 1.2 Open the gas supply valve of the natural gas pressure regulating station after confirming that the pipeline valve from the outlet of the pressure regulating station to the user is normally opened. When the flowmeter is put into operation, the front valve should be slowly opened first, then the rear valve should be slowly opened, and the flow rate should be gradually increased. After the instrument works normally at a small flow rate, the rear valve should be opened again to avoid instantaneous air impact and damage to the flowmeter.

5. 1. 1.3 After gas transmission, it is confirmed that the outlet working pressure of natural gas pressure regulating station is 30KP-50KP￠ ~, the normal range of flow combined device is 50m3/h- 1000m3/h, and that of Furong device is 32m3/h-650m3/h. 。

5. 1. 1.4 Check the natural gas pressure regulating station and its affiliated pipeline valves for abnormal leakage. If any abnormal leakage is found, it shall be reported to the unit supervisor in time and handled according to the plan of "Natural Gas Emergency Treatment Specification".

5. 1.2 patrol inspection in natural gas operation:

5. 1.2. 1 When using natural gas, routine inspection shall be conducted once per shift.

5. 1.2.2 Check the leakage of natural gas pressure regulating station and its pipeline valves every month, and test the flange interface and pressure gauge interface with soap bubbles.

5. 1.2.2 If any abnormality or leakage of natural gas is found during the inspection, it shall be reported to the unit supervisor in time, and it shall be handled according to the preplan of Natural Gas Emergency Treatment Specification.

5. 1.3 Stop gas:

5. 1.3. 1 External gas supply company stops gas:

A. When receiving the gas stop notice from the external gas supply company, it is necessary to know the specific gas stop matters, gas stop time, gas stop time and gas transmission time.

B report the gas stoppage to the supervisor of the natural gas management unit, and notify the supervisor of the natural gas user unit to switch the boiler from using natural gas to using diesel oil.

C. After stopping the gas, close the main control valve of the main pipeline at the natural gas customer end.

5. 1.3.2 Our gas station:

A. When receiving the gas stoppage from the internal natural gas user terminal, the gas stoppage matters and specific gas stoppage scope shall be specified.

B. According to the specific gas stop requirements, perform corresponding gas stop operations. (If the gas is stopped for individual users, the main control valve of the corresponding gas supply pipeline can be closed to stop the gas; If all gas users in our company stop gas, the main control valve at the main outlet of the pressure regulating station can be closed.

5. 1.4 Stop gas inspection:

5. 1.4. 1 Daily inspection is still needed after stopping gas operation to prevent abnormal actions of valves and control systems of natural gas pipelines.

5. 1.4.2 If any abnormal phenomenon is found in the patrol inspection, it shall be reported to the unit supervisor in time and handled according to the preplan of Natural Gas Emergency Treatment Specification.

5.2 Natural gas management matters:

5.2. 1 Strengthen the management and daily inspection of natural gas, and report and handle abnormal accidents in time.

5.2.2 In case of abnormality and gas leakage accident at the natural gas customer end, it shall immediately report to the supervisor of the gas management unit, and notify the gas user unit to switch the energy consumption of energy-using equipment and close the pipeline valves at the accident section.

5.2.3 When an abnormal accident occurs, it is necessary to understand the abnormal accident phenomenon and report it in time for timely treatment.

5.2.4 When dealing with natural gas leakage accidents, safety measures such as gas masks, protective glasses and antistatic clothing should be worn, and at least two people should participate in emergency rescue operations and respond to each other to prevent accidental gas poisoning accidents.

5.2.5 In natural gas management, it is necessary to use gas safely to prevent natural gas leakage accidents, and it is strictly forbidden to loosen the screws of gas pipeline interfaces at will to prevent accidental gas accidents.

5.2.6 Natural gas pressure regulating station belongs to gas-intensive area. Fireworks are strictly prohibited, all inflammable and explosive articles are stored, pipe screws and valves are removed at will, and the power supply is turned on privately.

5.3 natural gas leakage alarm linkage control system:

5.3. 1 alarm processing steps

When the controller gives an alarm, it means that combustible gas leaks in a certain detection area, reaching the alarm set value. At this time, the system has automatically linked the external equipment to close the solenoid valve according to the internal program requirements of the system (alarm does not produce linkage). At this point, the following steps should be followed:

5.3. 1.65438+

5.3. 1.2 The inspection site must be inspected according to the area displayed on the controller panel, and it is forbidden to produce any sparks or open flames;

5.3. 1.3 When the cause of failure or leakage has been determined, found out and completely eliminated, the system shall be restored according to the following steps:

5.3. 1.3.A unlock. Check the system locking function, and the system shows that the "Lock" key is always on, indicating that the system is locked. At this time, only the "mute" key is valid, and other operations are invalid. Operating system after unlocking (press the "function key" for 5 consecutive times to unlock);

5.3. 1.3.B system reset. When the system is unlocked, press the "Reset" button on the system panel, all digital tubes in the system will display "-",and then normal monitoring will be resumed (if it is detected that the gas leaked from the site is not exhausted, this step can be repeated until the system is reset);

5.3. 1.3.C Open the solenoid valve and operate under the condition of system reset (the system cannot be opened without reset);

At this time, the system returned to normal, the alarm system monitored normally, and the gas consumption returned to normal.

5.3.2 Daily Maintenance and Maintenance

5.3.2. 1 The personnel on duty should operate correctly in strict accordance with the requirements, and make a record of the system alarm;

5.3.2.2 can't just open the door of the controller box, nor can he replace the components in the box, nor can he be operated by people other than the personnel on duty.

5.3.2.3 entrusts an external qualified unit to inspect the detector every two years to ensure the detection performance;

5.3.2.4 should turn off the power supply when maintaining the system, and live operation is strictly prohibited;

When the system fails in 5.3.2.5, the personnel on duty should find out the cause of the failure and make records, and immediately notify the gas company to avoid unnecessary losses;

When 5.3.2.6 needs to repair or replace the equipment of the system, or transform the equipment it protects, which affects the system function, it needs to contact the gas company;

If the 5.3.2.7 system fails, it is necessary to contact the gas company in time. Without training, non-professionals are not allowed to operate the system with electricity.

5.3.3 Handling of trip of pressure regulating valve in living area of pressure regulating station

5.3.3. 1 When the pressure regulating valve trips, it shall be handled at the site in time and the valve body shall be opened. Before opening the valve body for gas transmission, inform the gas transmission end to close the natural gas valve, and then do the following:

5.3.3. 1A Unscrew the cover under the pressure regulating valve;

5.3.3. 1B Turn the cover over and screw in the screws below;

Pull down the cover and open the valve body.

In case of continuous failure in 5.3.3.2, you need to contact China Resources for handling.