Storage tanks has limitation like below in API 650:
"Vertical joints in adjacent shell courses shall not be aligned, but shall be offset from each other a minimum
distance of 5t, where t is the plate thickness of the thicker course at the point of offset. "
"Vertical joints in adjacent shell courses shall not be aligned, but shall be offset from each other a minimum
distance of 5t, where t is the plate thickness of the thicker course at the point of offset. "
which is not applicable in real since results flat spots.
Also
EN 13445-4:2009
6.2 Vessels or parts made of more than one course
Where a vessel or vessel part is made of two or more courses the longitudinal weld joints of adjacent courses shall be staggered by 4 e with 10 mm minimum, or 30 mm minimum when the vessel or vessel part is either working in the creep range or designed by Design by Analysis – Direct Route (Annex B of EN 13445-3:2009) or designed using 6.3 of EN 13445-3:2009.
2018-04-19 7:10 GMT+03:00 'Rajesh Kasvala' via Materials & Welding <materials-welding@googlegroups.com>:
Pl refer uw9 D
--On Thu, Apr 19, 2018 at 9:34 AM, udaya bhaskar<dusroni@gmail.com> wrote:My dear, distance between two L seams for pressure vessels minimum 250- 300mm.--On Mon 21 Mar, 2016, 15:57 Ritixa Tandel, <ritixatandel11@gmail.com> wrote:--HELLO,I AM STUDYING & REFERRING ABOUT DESIGN OF EQUIPMENT.CONTINUE TO YOUR DISCUSSION ABOUT ''DISTANCE BETWEEN TWO L-SEAM''........WHAT SHOULD BE THE MINIMUM DISTANCE IF MY REACTOR IS LIKE THIS:--SS 316 L REACTOR (3 KL WORKING CAPACITY)--SHELL: 1500 MM ID x 1700 MM LG x 8 MM THK--REACTOR WITH DOUBLE LIMPET COIL.REGARDS RITIXA.ANKLESHWAR, GUJARAT. INDIA.
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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Saygılarımla / Regards
Tuğrulhan ÖZDEMİR
API 653 AI, Welding & Materials Eng.
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