Where should an Alberta identification number be stamped on a boiler or pressure vessel?

The correct answer is that an Alberta identification number should be stamped on a circle. This standardized practice is established to ensure that identification can be clearly and consistently recognized across various types of boilers and pressure vessels in Alberta. The circular stamping provides a durable and identifiable mark that meets regulatory requirements, allowing for easy verification of the equipment's certification and compliance with safety standards.

Using different shapes, such as a square, rectangle, or octagon, could lead to confusion or misidentification, as these shapes do not have recognized significance within the context of Alberta's regulations, nor do they offer the same level of visibility and clarity that a circular stamp does. The emphasis on a uniform circular stamp aids in maintaining a clear, industry-wide standard for identification purposes.