The terms sweet crude and sour crude refer to the hydrogen sulfide contents of crude oil from different sources. Welding corrosion-resistant alloys like Inconel® and Monel® is considerably more difficult than welding carbon steels. The NACE MR0175 and MR0103 standards are only tangentially concerned with welding oil storage tanks-their primary concern is sulfide stress cracking in petroleum equipment in what is termed a sour environment. These three standards cover the welding of oil storage tanks exhaustively. The relevant API standards- API 650, API 620, and API 12D-respectively govern welded oil tanks, larger welded tanks with higher internal pressures, and the fabrication and erection of field-welded tanks used mostly in upstream production. is governed by standards issued by the American Petroleum Institute (API) and the National Association of Corrosion Engineers (NACE). Oil Storage Tank Welding Standards and Design Although coronavirus lockdowns are coming to an end, extra storage capacity is likely to continue to be in high demand. Orbital welding processes can help manufacturers welding oil storage tanks meet the sudden demand and enhance producers’ storage capacity in the future. The economic shocks from the current coronavirus pandemic are likely to last for some time and oil producers cannot simply shut off the tap, meaning that reduced oil demand may continue for some time.ĭue to the difficulty of finding and qualifying experienced welders to fabricate oil storage tanks, automated welding processes will be key to meeting the demand for bulk oil storage. In fact, oil storage briefly became a commodity that was more valuable than oil itself in April. Today we’re living in a very different reality, with a glut of oil and not enough storage. A staple of dystopian fiction in the 1980s and 1990s was a world that had run out of oil.
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