Section 721.955  Standards:  Sampling Connection Systems

a)         Each sampling connection system must be equipped with a closed-purge, closed-loop, or closed-vent system.  This system must collect the sample purge for return to the process or for routing to the appropriate treatment system.  Gases displaced during filling of the sample container are not required to be collected or captured.

b)         Each closed-purge, closed-loop, or closed-vent system as required in subsection (a) must meet one of the following requirements:

1)         It must return the purged process fluid directly to the process line;

2)         It must collect and recycle the purged process fluid; or

3)         It must be designed and operated to capture and transport all the purged process fluid to a material management unit that complies with the applicable requirements of Sections 721.984 through 264.986 or a control device that complies with the requirements of Section 721.960.

c)         In-situ sampling systems and sampling systems without purges are exempt from the requirements of subsections (a) and (b).

(Source:  Added at 40 Ill. Reg. 11367, effective August 9, 2016)