Visible emission definition

Visible emission means the observation of an emission of opacity or optical density above the threshold of vision.
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Visible emission means any air contaminant, vapor or gas stream which contains or may contain an air contaminant which is passed into the atmosphere and which is perceptible to the human eye.
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Visible emission means any emissions that are visually detectable without the aid of instruments.
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Examples of Visible emission in a sentence

  • Visible emission readings shall be performed in accordance with 40 CFR 60, Appendix A, Method 9, for a minimum of five (5) consecutive six (6) minute averaging periods beginning not more than twenty-four (24) hours after the start of the malfunction or down time.

  • Visible emission checks shall be performed during periods of normal facility operation and appropriate weather conditions.

  • Applicable Compliance Method: Visible emission checks shall be conducted following the completion of maintenance operations.

  • Visible emission checks shall be conducted at least once per calendar month with a maximum of forty-five (45) days between consecutive readings.

  • Visible emission means the observation of an emission of opacity or optical density above the threshold of vision.


More Definitions of Visible emission

Visible emission means any emission which is visually detected without the aid of instruments and which contains particulates of asbestos material.
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Visible emission means an emission of opacity or optical density above the threshold of vision, consistent with 40 C.F.R. Part 63.2.
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Visible emission means any emissions which are visually detectable without the aid of instruments coming from RACM or asbestos-containing waste material, or from any asbestos milling, manufacturing, or fabricating operation. This includes asbestos debris found outside of containment at a job site. This does not include condensed, uncombined water vapor.
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Visible emission means an emission of air contaminants of such quantity or quality as to be seen in contrast with background. Visible emissions are quantified by their opacity, as defined in this Chapter.
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Visible emission means any contaminant which can be detected by the naked eye;
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Visible emission means emissions of air contaminants of such quantity or quality as to be seen in contrast with background. (Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)
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Visible emission means an emis­ sion of greater than 5 percent opacity or 1/4 Ringlemann, as measured by test methods set forth in this part.
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