How is it to connect the oxygen pipeline flange jumper in this way?
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How is it to connect the oxygen pipeline flange jumper in this way? 1155 Double reward for providing standard references
Not all metal pipe flanges require bonding; it depends on whether the design documents specify such a requirement. If the design documents cannot be found, the resistance value must be measured to determine this; when the resistance between the flanges exceeds 0.03Ω, a wire must be used for bridging. Refer to GB50517 – Code for Acceptance of Construction Quality of Petrochemical Metal Piping Projects
Such a connection is likely to fail inspection; only a \"national standard copper braided strap grounding wire\" qualifies as standard, and it should be purchased according to the specified length. With such a luxurious configuration, it looks awkward to use these wires for connection. It is recommended to use dedicated parts to ensure compliance, but the standard should still be based on the resistor value meeting the required specifications. Finally, it’s also necessary to consider the visual aspect so that it looks pleasing to the eye: lol
Although it isn’t explicitly stated that static bonding prevents welding, I’ve always wondered whether welding in this way really doesn’t affect the performance of the flange itself Slight deformation, and even annealing affecting strength?
It is possible; there are various recommended methods for making connections, and the appropriate approach should be chosen based on the specific operating conditions； This style of bridging achieves the purpose of bridging without affecting the securing effect of the pipeline bolts; what’s more, it facilitates subsequent maintenance and replacement, and does not impact the securing of the pressure pipeline (removing the flanges can cause uneven stress distribution, and the sealing performance of the gaskets will be affected)
I’ve identified a new safety hazard: the valves on oxygen pipelines must not be connected directly to elbows or tees
All the friends upstairs offered valuable suggestions
What you’re referring to is the practice specified by standards; in reality, during safety inspections experts apply a one-size-fits-all approach – for example, at hydrogen production stations, even the circulating water pipes need to have bonding wires installed, regardless of the pipe diameter or the type of fluid flowing through them
This post was last edited by Shutong on 2021-10-23 09:38. There was lively discussion regarding the grounding and bonding of oxygen pipelines; thanks to all the users for their enthusiastic participation, with many valuable insights shared during the discussion. I have also compiled some points for fellow sea enthusiasts to consider critically
Why? Our company often produces elbow tees that consist of flanges and valves; could you please explain in detail what potential hazards there are?
GB50030-2007 Code for Design of Oxygen Stations 12.0.18: At the outlet of the valves in oxygen pipelines, there is a sudden change in the flow conditions; it is advisable to have a straight pipe section to improve the flow pattern and prevent the formation of vortices. There should be a straight pipe section with a length of not less than 5 times the outer diameter of the pipe.