Small-sized and often press safety of hot water boiler censorial regulation - Chinese boiler Net
Small-sized and often press safety of hot water boiler censorial regulation
From;    Author:Stand originally

Thirtieth 4 The blueprint appearance of small-sized steam boiler ought to indicate capacity of boiler design water. The material of small-sized steam boiler according to " technology of steam boiler security is censorial regulations " medium regulation is chosen. Abate coefficient takes boiler welding line φ = 0. 8, drum (housing) or the extraction of furnace uses a wall thick must not be less than 3 millimeter.

Use " technology of steam boiler security is censorial regulations " the material beyond the 23rd regulation, ought to accord with the following condition at the same time:

(One) accord with " technology of steam boiler security is censorial regulations " the 22nd regulation;

(2) via safety of pressure vessel of boiler of supervisory service of provincial quality technology censorial orgnaization is approved.

Thirtieth 5 Small-sized steam boiler advocate welding line must not use T form contact.

Thirtieth 6 Solderer, welder art visual examination of assess, welding line, repair ought to according to " technology of steam boiler security is censorial regulations " the regulation is carried out. Boiler lest make product inspection,can try board.

Thirtieth 7 The product ought to undertake according to following requirement nondestructive detects:

(One) the 10 % that spend by amount of boiler welding line or welding line overall length (place of welding line across must be included) undertake ray detects;

(2) the ray flaw detection of butt joint connect ought to press GB 3323 " steel is fused solder to take a picture to classification with quality to receiving contact ray " the regulation is carried out. Requirement of ray photographic quality is not gotten under AB class;

(3) rated vapour pressure is more than 0. The small-sized steam boiler of 4 million handkerchief, quality of butt joint connect is not qualification under Ⅱ class; Rated vapour pressure is less than or be equal to 0. The boiler of 4 million handkerchief, quality of butt joint connect is not qualification under Ⅱ class.
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