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Up Topic Welding Industry / Technical Discussions / Heat input for welding in pipelines in service
- - By tfdavid (*) Date 04-01-2010 15:44
What shell be the limit values of heat input to weld fittings to pipelines in service (natural gas flowing in it)? It´s not the values calculated from the electrical characteristics and welding speed that are in the welding procedure qualification record, right?
Parent - By G.S.Crisi (****) Date 04-01-2010 21:47
Refer to API's publication "Investigation and Prediction of Cooling Rates During Pipeline Maintenance Welding, and User's Manual for Battelle’s Hot-Tap
Thermal-Analysis Models", available from the American Petroleum Institute: www.api.org
Giovanni S. Crisi
Sao Paulo - Brazil
Up Topic Welding Industry / Technical Discussions / Heat input for welding in pipelines in service

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