FRP Patching of Gas Supply Piping 2

[CdnMechEng]

I've been tasked with performing the research required for verifying the feasibility of utilizing frp (fiberglass reinforced plastic) patches for blast furnace gas and coke oven gas supply mains. In particular I'm interested in how these types of repairs would relate to regulartory codes in the Province of Ontario (TSSA, CSA etc). I've only recently been introduced to fuel gas piping codes and so I'm not 100% sure where I should start. I'm not even certain that the mains, which are low pressure (55 inWC) fall under TSSA regulations.

I have already started by reading CSA B149.1-05 but I couldn't find anything that relates to material requirements other than ASTM A53 and A106 which are for carbon steel pipes.

 

[Bribyk]

CSA B149.1-05 (note there's 2007 amendments near the front which are easy to miss) should be the code to follow as long as you're only using the gas as fuel (not using it in a process). You might want to double-check this with the Ontario Boiler Safety people (ours is called ABSA).

In Alberta, all of your equipment needs a Canadian Registration Number (CRN) certifying its pressure rating. You're likely just going to have to convince the local gas inspector that what you're doing is safe.

If you're doing things outside of B149, you're likely going to have to get a Professional Engineer to stamp the drawings and take responsibility for the design/procedure and the local inspector should then sign off. B149 will say to replace damaged components and gives little info about repair. It may qualify under the code as long as the repairs are performed by trained and competent individuals.

Hope this helps a bit, I recently went through all of these hoops myself.

 

[SJones]

This document may be a pertinent read:

http://www.hse.gov.uk/research/otohtm/2001/oto01038.htm

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[CdnMechEng]

Thanks SJones, thats a very helpful document.