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The standards forced to apply
Including the national technical standards for safety as follows
+ TCVN 7704: Boilers - Safe technical requirements for design, structure, fabrication, installation, use, repair.
+ TCVN 6008-1995: Pressure equipment– Welds: Technical requirements and method of testing.
+ TCVN 6413:1998 (ISO 5730:1992), Boiler fixed fire-tube, weld structure (except for water-tube boilers).
Determination of testing pressure:
Hydraulic testing pressure of boilers after being installed according to the following table:
Design pressure,MPa
p ≤ 0,5
p ≥ 0,5
Hydraulic testing pressure,MPa
2 p but not less than 0,2 MPa
1,5 p but not less than 1 MPa
Hydraulic testing pressure of boilers when testing regularly or irregularly depends on the permitted standard working pressure according to the following table:
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