Boiler check first or external inspection first
For those boilers that can not be tested internally, a hydraulic test shall be carried out every three times.
Power system power generation boiler internal test and hydraulic test cycle can be adjusted in accordance with the power plant overhaul period.
When the internal inspection and external inspection with a year, should first carry out internal testing, and then external inspection.
In the boiler with a general annual inspection, every two years to conduct an internal inspection, every six years to conduct a hydraulic test.
After the first inside, the internal test if the problem and after the external test out of the problem together to deal with.
