How should grounding flat bars be welded to meet the requirements? What is the proper way to overlap them?
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The supervisor approved this approach, but the expert team inspected it and said it was not acceptable.
For this, one has to ask the expert group how to do it properly; “It’s not easy to work – one can get exhausted without achieving any results.” :)
He told us to look up the regulations by ourselves, but there are no specific instructions in those regulations! Another approach is to angle that short flat bar. The members of the expert group left right after asking their questions, without saying how to make corrections!
Could you provide a viable approach?
This post was last edited by CHANGBAISHI on 2019-7-11 at 18:17. Usually, welding or brazing is used, followed by the application of asphalt paint for corrosion protection. If the expert group says it’s not feasible, then ask them to come up with a viable method. If you don’t take it, then I’ll take it from you. Hehe, expert team, look for your contract – it contains the relevant implementation standards. If not, there’s no point talking about it. I’m sorry; there was another typo. “Work without following proper methods; no reward even if you die of exhaustion. ”
If you post this question on the secure version, the answer will definitely be different; the regulations specify this clearly. I’m not sure what location this grounding is for. The normal lap length is twice the width of the flat strip
It is located within the compressor building and belongs to the explosion-proof area. The expert group said: the overlap length is sufficient, but the overlap method is incorrect
This post was last edited by fjw3081585 on 2019-7-12 at 11:11. To conclude first: it fails. Then, in accordance with GB50169 and Standard Atlas 12D10, the roughening method for that area should be followed as specified in the atlas. There are also pre-made cold-formed curved blades available that meet the regulatory requirements; when welding, pay attention to the overlap area and ensure welding is carried out on all three sides
Also, note that the national standard for grounding welding is a mandatory standard, as proposed by the expert group – there’s no issue with that
The expert group said that the overlap length is sufficient, but the overlapping method is incorrect. So should the shorter section, which is overlapped in a parallel manner, be changed to an inclined overlap?
It has been modified according to Type IV. At first, it was constructed with a standard diagonal layout, but later the supervisor asked us to use the method shown in the photos. When the expert team came for an inspection, they said that approach wasn’t acceptable. The problem was that the supervisor went home to recover from an illness before the expert team arrived, which left us unable to provide any explanations.