The device and gas supply should meet the requirements. Welding of
2.2.3 steel pressure field, when the wind speed is more than 5.4m/s, should take measures to negative temperature wind; construction, take appropriate measures to heat gas equipment; when the temperature is below 15 DEG C, with preheating and heat preservation measures.
2.2.4 site must have the safety protection measures, formulate and implement safety measures, strengthen labor protection of welders, prevent the occurrence of burn, fire, explosion accidents and injuries.
2.2.5 must pay attention to the joint position, in the same section of reinforced joint area percentage, does not comply with the relevant provisions of the "concrete structure engineering construction and acceptance specification", should adjust the welding joint.
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