1. (a) Ports required to be labeled. The content of a pipeline system shall be identified by labels applied at or near ports. A port is a point of access, which may be opened to the environment, used for charging or discharging a system at which an employe may come into direct contact with a chemical under normal conditions of use.

2. (b) Alternative methods. The employer may develop alternative methods to adequately apprise anyone who may be potentially exposed at a port of the contents of the pipeline in the following cases:

   1. (1) If a pipeline is used to convey different chemicals at different times.
   2. (2) An environmental health and pest control system or other system designed to automatically discharge a chemical from spray-type ports.

3. (c) Exclusions. The requirements of subsections (a) and (b) do not apply to the following substances:

   1. (1) Pipelines containing only effluents.
   2. (2) Pipelines containing only water discharges.
   3. (3) Emissions through stacks.
   4. (4) Discharge conduits.
   5. (5) Fire sprinkler systems containing only water.
   6. (6) Pipelines containing only water.

Cross References

This section cited in 34 Pa. Code § 301.3 (relating to jurisdiction/exemptions).