ASTM-D7520 2009

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D7520-09 Standard Test Method for Determining the Opacity of a Plume in the Outdoor Ambient Atmosphere

Published By	Publication Date	Number of Pages
ASTM	2009	21

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Categories: 13.040.20 - Ambient atmospheres, ASTM

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Description

1.1 This test method describes the procedures to determine the opacity of a plume. The aforementioned plume is caused by particulate matter emitted from a stationary point source in the outdoor ambient environment using digital imagery and associated software and hardware.

1.2 The opacity of emissions is determined by the application of a Digital Camera Opacity Technique (DCOT) that consists of a Digital Still Camera, Analysis Software, and the Output Function s content to obtain and interpret digital images to determine and report plume opacity.

1.3 This method is suitable to determine the opacity of plumes from zero (0) percent to one hundred (100) percent.

1.4 This test method is not applicable to stacks with internal diameters greater than 7.0 ft.

1.5 Conditions that shall be considered when using this method to obtain the digital image of the plume include the plume s background, the existence of condensed water in the plume, orientation of the Digital Still Camera to the plume and the sun (see Section 8).

1.6 This standard describes the procedures to certify the DCOT, hardware, software, and method to determine the opacity of the plumes.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Interferences
3	TABLE 1
4	System Description Procedures
5	Certification of DCOT and DCOT Operator
6	Precision and Bias TABLE 2 TABLE 3
7	Keywords A1. PRINCIPLES OF VISUAL EMISSIONS MEASUREMENTS AND PROCEDURES TO EVALUATE THOSE EMISSIONS USING DIGITAL CAMERA OPTICAL TECHNIQUE (DCOT) A1.1 Abstract A1.2 Table of Contents
8	A1.3 List of Figures A1.4 Principles of Visual Emissions Measurement FIG. A1.1
9	FIG. A1.2 FIG. A1.3 FIG. A1.4
10	FIG. A1.5 FIG. A1.6 FIG. A1.7 FIG. A1.8
11	A1.5 Method 9 Requirements
15	A1.6 Introduction to Digital Camera Opacity Technique (DCOT) A1.7 Equipment to Determine Plume Opacity in the Field Using Digital Camera Opacity Technique
16	A1.8 Documentation Needed to Determine Plume Opacity with DCOT
18	A1.9 Certification of DCOT
19	A1.10 Knowledgeable Users
20	A2.1 A3. QUALIFICATIONS AND TESTING A3.1 Smoke Generator Specifications TABLE A2.1
21	TABLE A3.1

Additional information

Standard Title	D7520-09 Standard Test Method for Determining the Opacity of a Plume in the Outdoor Ambient Atmosphere
Published Code	ASTM
Publication Date	2009
Pages Count	21
ICS Codes	13.040.20 - Ambient atmospheres

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ASTM-D7520 2009

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