An example of Maintain Design Conditions:
The section of "Design Information" is shown bellow, with the descriptions of all the data with should be entered.
Design Temperature [°C]
The design temperature of the equipment item should be recorded. Equipment designed for low temperature service may have a Minimum Design Metal Temperature and a maximum design temperature.
Design Pressure [bar]
The design pressure of the equipment item should be recorded. If modifications to the equipment since its original fabrication have changed the design pressure, the current value should be indicated.
An example of Operation Conditions:
The section of "Operation Information" is shown bellow, with the descriptions of all the data with should be entered:
Operating Temperature [°C]
The normal operating temperature is used in consequence calculation and can be an important variable in several damage mechanisms. When a range of operating temperatures is employed as the result of a plant producing a variety of product grades, record of the most severe temperature is normally specified (highest for high temperature operations, lowest for low temperature processes).
Temperature extremes under upset conditions can have a profound effect on rate of damage for several damage mechanisms.
The highest and lowest temperature that could occur should be recorded.
For equipment which generates a large temperature change (heat exchangers, furnaces, etc.), the best practice is to input average temperature across equipment
Operating Pressure [bar]
The normal operating pressure entry is used in various consequence calculations and in determination of the the safety factor.
When a range of operating temperatures is employed as the result of a plant producing a variety of product grades, record of the highest pressure should be recorded. Pressure extremes under upset conditions should be recorded if they are significantly different from normal operating pressure.