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本帖最后由 emperor620 于 2013-9-10 21:04 编辑
以前一直都是意外标准的配件可以按照UG36(3)(a)补强计算豁免,但是发现在UW16 (f) standard fittings 有如下要求:
(3)(a) Fittings not exceeding NPS 3 (DN 80), as shown in Fig. UW-16.2, may be attached to vessels that are not subject to rapid fluctuations in pressure by a fillet weld deposited from the outside only without additional reinforcement other than is inherent in the fitting and its attachment to the vessel wall provided all of the following conditions are met:
(1) maximum vessel wall thickness of 38 in.(10 mm);
(2) the maximum size of the opening in the vessel is limited to the outside diameter of the attached pipe plus 34 in. (19 mm), but not greater than one-half of the vessel inside diameter
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现在都疑惑了,是不是UG36(3)(a)不能用于配件的补强豁免? 在上述 UW16(f)(3)(a)规定了只能使用FIg.UW-16.2所示连接方式采用此条豁免补强,且后续还规定了壁厚不能超过10mm,按此理解,不是上述的连接方式或壁厚超过10mm的配件开孔必须计算是否需要补强了?如采用FIG UW16.1 X,Y,Z等连接方式?各位大侠在使用standard fitting 是如何处理的呢?
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