what is the Standard operating procedure for SS 316 tubing.
1. Tubing fittings.
2. Tubing supports.
3. Tubing lengths.
4. tubing to be made to avoid tension and Stress.

 

You've got some great bedtime reading to look forward to.

"Instrumenation Tubing and Their Connections" an ebook by Nirbhay Gupta
http://www.scribd.com/doc/12725993/Instrumentation-Tubing-and-Their-Connections-Nirbhay-Gupta

This is a blog on tubing installation:
http://instrumentationtubing.blogspot.com/2012/12/100-installation-of-instrumentation_7603.html

Here's a web site listing the Standards for tubing
http://www.iceweb.com.au/Technical/tubing_standards.htm

The site above also references the Standards
"ISO 2186:2007 Fluid Flow in Closed Conduits for pneumatic signal transmission", and
"ISA-67.02 Nuclear Safety Related Instrument Sensing Line Piping and Tubing Standard for Use in Nuclear Power Plants"

There is also "ANSI/ISA-77.70-1994 (R2005) Fossil Fuel Power Plant Instrument Piping Installation"

Each of the major-player fitting manufacturers publishes an illustrated nstallation guide; Parker, Swagelok, Hoke, to name a few.