API 682-2014 question

[shvet]

Good day, forum

A.1.2 Additional Engineering Required
... The use of other selection criteria and more detailed engineering review is specifically recommended for the following service conditions:
...
j) high viscosity or pour point above or within 20 °C (36 °F) of minimum ambient temperature; and
k) fluids with special and/or unusual properties such as pharmaceuticals, liquid oxygen, hydrofluoric acid, food grade materials, and other specialty liquids.

I do not understand how it works. Explain please.

Q1: Lets assume a pump:
- liquid pour point 19°C
- liquid pimping temperature 10°C
- ambient temperature -40°C
- liquid has not "special and/or unusual properties and other specialty liquids"
Should API 682 be implemented?

Q2: Lets assume a pump:
- liquid pour point 19°C
- liquid pimping temperature 10°C
- ambient temperature -40°C
- liquid has "special and/or unusual properties and other specialty liquids"
Should API 682 be implemented?

Q3: Lets assume a pump:
- liquid pour point 21°C
- liquid pimping temperature 10°C
- ambient temperature -40°C
- liquid has "special and/or unusual properties and other specialty liquids"
Should API 682 be implemented?

 

[TenPenny]

None of those conditions determine if API682 should be used, they are to tell you that additional engineering is required if any of these conditions exist. That is assuming you have PREVIOUSLY determined that API682 applies to this application.

Whether or not API682 should be implemented is dependent on your plant's standards.