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pig launcher / design code

Thread starter hkjoe
Start date Jan 29, 2008

Status: Not open for further replies.

Jan 29, 2008

hkjoe

Petroleum

we build a tank farm (API 650)with on- and off shore pipeline with pig launcher / receiver. Code for CH-transportation systems is 31.4 and it is written that 31.4 cannot be used for pressure vessels (chapter I, 400.1.2b. My understanding is a pig launcher is a pressure vessel (manufacturing acc. to ASME VIII-I but what about the design and materials (ASME II)? Our pig (shell) is made of X42.
Thanks