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Access fittings are Branches under API 1104?

Access fittings are Branches under API 1104?

Access fittings are Branches under API 1104?

dear all,

We have these Cosasco Nipples, used for inhibitor injection o corrosion monitoring (http://www.cosasco.com/documents/50_Flarweld_Acces...). For in service welding of this fittings under Apendix B of API 1104, should the WPS be for Branch joints?

thanks in advance.

Octavio Chable.

RE: Access fittings are Branches under API 1104?

Yes - this is a branch connection; it attaches to the main pipe header/line, it is many sizes smaller than the main line.

RE: Access fittings are Branches under API 1104?

According to App B of API 1104, for in-service welding (B.2) procedure qualification for fillet weld in Sect. 5 should be applied.

Also specified in B.2.3 "The requirements in 5.7 for branch and sleeve welds are appropriate for in-service welding".
(Note: 5.7 specify qualification for fillet weld).


RE: Access fittings are Branches under API 1104?

The fitting/device that is shown on your link welds on very similarly to an O'let; there is supposed to be full-penetration of the root. This makes it a small-bore butt weld. And yes, a procedure or welder only qualified for big-bore buttwelds is not qualified to work on small-bore.

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