1- Don’t include field material in the spool
2- Avoid spools with U shape
3- Avoid spools connecting piping in three axis
4- Maximum length is 12m
5- Pipe size Larger than 2.5”
6- Minimize field weld on the vertical pipe
7- Flanges connecting to rotating equipment or underground piping to be tack weld
8- Smallest pipe length = 1.5 pipe diameter
9- Spool width not more than 2m
10- Welding map to be with direction of flow
11- No need to map last joint in the isometric except if isometric end connected to equipment
12- Field run starts after 12m length
13- Extra lengths will be 10 cm in all direction between 2 terminal points