Every pressure vessel is designed and built to a recognised construction code. Depending on what it holds and where it is used, it may also need approval from a statutory authority before it is put into service.
Design codes
ASME Section VIII Division 1 is the most widely specified code for unfired pressure vessels in India, followed by IS 2825, the Indian code for unfired pressure vessels. Some clients and licensors specify other codes such as EN 13445 or PD 5500.
When PESO approval applies
Vessels for compressed or liquefied gases, such as air receivers above the threshold sizes, LPG and ammonia vessels, generally fall under the Static and Mobile Pressure Vessels (Unfired) Rules, administered by the Petroleum and Explosives Safety Organisation (PESO). Design and fabrication records are submitted for approval.
When IBR applies
Boilers, steam vessels and steam piping generally fall under the Indian Boiler Regulations. Design approval and stage-wise inspection are carried out by a recognised inspecting authority, and the vessel is stamped on completion.
Records needed during fabrication
- Approved drawings and design calculations
- Mill test certificates traced to heat numbers
- Welding procedures (WPS / PQR) and welders qualified to ASME Section IX
- NDT reports, radiography and hydrostatic test certificates
- The final manufacturer's data book
Planning tip
Approvals take time. Confirming the code, service and any statutory approval at the quotation stage keeps commissioning on schedule. See our pressure vessel page for the documentation we supply.