BS EN 13445‑4 is the fourth part of a series on unfired pressure vessels. BS EN 13445‑4 specifies requirements for the manufacture of unfired pressure vessels and their parts, made of steel. This includes their connections to non-pressure parts.
BS EN 13445‑4 also specifies requirements for material traceability, manufacturing tolerances, welding requirements, requirements for permanent joints other than welding, production tests, forming requirements, heat treatment, repairs, and finishing operations.
BS EN 13445‑4 specifies the materials used, manufacturing tolerance, weld details, welding, manufacture and testing of welds, production tests, forming of pressure parts, post weld heat treatment (PWHT), repairs, finishing operations, structural tolerances and specifications, and approval of expansion procedures and operators; for unfired pressure vessels.
BS EN 13445‑4 on unfired pressure vessels is useful for organizations that commission, design, build and maintain pressure vessels, mainly in:
Users:
If pressure vessels are expected to do their jobs successfully, they need to adhere to the highest quality standards. This keeps their contents intact and ensures the safety of those around.
Following the design guidelines and testing procedures in BS EN 13445‑4 ensures that volatile contents such as liquids and gases don’t corrode the container, even when subjected to extreme temperature changes.
Besides design and construction, BS EN 13445‑4 also offers guidelines to inspect and test in-service vessels, subject to appropriate adjustment.
BS EN 13445‑4:2021 supersedes BS EN 13445‑4:2014+A1:2016. BS EN 13445‑4:2021 includes some technical changes with respect to BS EN 13445‑4:2014+A1:2016. These include:
EN 13445-4