Process flow diagram - Typical oil refinery. This is a schematic process flow diagram of the processes used in a typical oil refinery. This process flow diagram (PFD) example was redesigned from the Wikimedia Commons file: RefineryFlow.png. [commons.wikimedia.org/wiki/File:RefineryFlow.png] This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Each gym also provides its members with access to state-of-the-art equipment. While members need to be 18 years old to sign up individually, those who are at least 14 can sign up with a parent or legal guardian.
1 Older gymnasts often have to start at levels 4 or 5. 2  Some gyms won't take older gymnasts on their teams at all. 3  A gym which aims to produce elites will look for kids who are 6 to 7 years old to do level 4 and 5. 4  A gym which focus's on college scholarships will usually want their level 4 and 5's to be no older than 10.