GB 22127-2008Bulk-cement delivery tanker security quality (English PDF)

4.1 Maximum operating pressure

Maximum working pressure of the tank should not exceed 0.2MPa.

4.2 Strength

Steady boost to the tank maximum working pressure of 1.15 times, sustained 30min, during the test and no abnormal noise visible deformation.

4.3 Tightness

After the tank pressure reaches 0.2MPa, stop gas supply 30min, weld not leak and pressure drop should be less than 0.015MPa.

4.4 Tank connecting means

Tank connecting device should have sufficient strength to meet the pneumatic conveying powder materials and transport requirements of bulk cement.

4.5 Tank delivery device

4.5.1 tank transport means should guarantee claim pneumatic conveying, not leak.

4.5.2 tank delivery device pipeline and fittings at 1.15 times the maximum working pressure pneumatic test, should be sealed and no reliable See deformation.

4.5.3 tank or transport means shall be provided pressure gauge accuracy rating of not less than 2.5, the installation location easy operator observation.

4.5.4 tank transport means shall be provided a safety valve, safety valve discharge function should be able to meet the security requirements of pneumatic conveying, safety valve should be waterproof, Installation location for easy inspection and maintenance.

4.5.5 unloading quick connectors shall conform to JG/T 5021-1993 requirements and regulations.

4.6 Tank safety device

4.6.1 The tank should be set up near the mouth of the feed table and fence and other safety devices, workstations should be non-slip, easy drainage.

4.6.2 open and close the tank lid material should be light and flexible, reliable sealing; safety interlock device shall be provided.

4.6.3 The tank should be set up relief device, relief device should be easy to operate.

4.6.4 tanks shall be marked with warning signs prominently.

4.7 Tank head

Tank head should be in line with GB 150-1998 and 10.2.3 in Chapter 7 of the regulations and requirements.

4.8 Tank and tank welding

Tanks shall not have cracks, corrosion and other significantly affect the mechanical strength and stiffness of the material defects; weld surface shall not have cracks, lack of fusion, incomplete Penetration, slag and other phenomena, the weld surface of the undercut depth of not more than 0.5mm, the length of continuous biting edges shall not exceed 100mm. Both sides of the weld Undercut total length may not exceed 10% of the weld length.

5.1 Working pressure tank

Tank in pneumatic conveying health standard conditions by observation tank gauges working pressure is less than 0.2MPa (bulk cement truck Nominal compressor discharge pressure to use not more than 0.2MPa, so the tank should not exceed the maximum working pressure 0.2MPa).

5.2 Body strength

After steady boost to the tank under 1.15 times the maximum working pressure continued 30min, check the tank if there is abnormal noise and visible deformation.

5.3 Tank tightness

After the tank pressure reaches 0.2MPa, stop gas supply, 30min after the weld not leak and pressure drop should be less than 0.015MPa.

5.4 Tank connecting means

Let the tank is connected with the vehicle, it does carry the full load test of 20km, connecting means checking whether there is enough to meet the bulk cement Powder and other materials to achieve the strength of pneumatic conveying and transport requirements.

5.5 Tank delivery device

5.5.1 tank in pneumatic conveying conditions, check delivery device leaks, meets the requirements of pneumatic conveying.

5.5.2 Check the tank is installed pressure gauge, pressure gauge is easy operator observation.

5.5.3 delivery device safety valve is installed, the installation location is to facilitate inspection and maintenance, is waterproof, the ability to meet emission strength Safety requirements for transport.

5.5.4 Check whether the discharge quick connector JG/T 5021-1993 requirements and regulations are met.

5.6 Tank safety device

5.6.1 Check whether the feed tank set up near the mouth of the working platform, rails, skid plates and other safety devices to check whether the platform is easy to work drain.

5.6.2 Check the opening and closing of the lid material is flexible, lightweight, sealing is reliable, with or without safety interlock device.

5.6.3 check relief devices, if easy to operate.

5.6.4 Check whether the tank prominently warning signs, warning signs of compliance with the provisions of GB 2894-1996.

5.7 Tank head

GB 150-1998 check compliance with Chapter 7 and 10.2.3 of the regulations and requirements.

5.8 Tank and tank weld

Check the tank for cracks and corrosion and other significant material defects affect the mechanical strength and stiffness; check whether the weld surface cracks, Incomplete fusion, incomplete penetration, slag and other phenomena, check both sides of the weld undercut depth and length are in the required range.