ASCE 18 96:1996 Edition

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ASCE Standard 18 Standard Guidelines for In-Process Oxygen Transfer Testing

Published By	Publication Date	Number of Pages
ASCE	1996	64

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Description

This IStandard Guidelines for In-Process Oxygen Transfer Testingn describes several proven techniques for measuring oxygen transfer under process conditions. Nonsteady state, offgas, and inert gas tracer methods are detailed in the body of this standard, which is followed by a brief discussion of comparisons among methods. It is intended that these guidelines be used by engineers, owners, and manufacturers in evaluating the performance of aeration devices under process conditions.

PDF Catalog

PDF Pages	PDF Title
11	1 Scope 1 Scope 2.0 Non-Steady State Method 2.0 Non-Steady State Method 2.1 Objective 2.1 Objective 2.2 Theoretical basis 2.2 Theoretical basis
12	2.3 Assumptions and limitations 2.3 Assumptions and limitations
13	2.4 Procedure 2.4 Procedure 2.4.1 The H202 technique 2.4.1 The H202 technique
14	2.5 Sample calculation 2.5 Sample calculation
15	2.6 Quality control 2.6 Quality control
16	Test variability and accuracy Test variability and accuracy
17	2.7.1 Test variability 2.7.1 Test variability
19	3.0 Off-gas Method 3.0 Off-gas Method 3.1 Objective 3.1 Objective 3.2 Theoretical basis 3.2 Theoretical basis
20	3.3 Assumptions and limitations 3.3 Assumptions and limitations 3.4 Apparatus and supplies 3.4 Apparatus and supplies 3.4.1 Off-gas analyzer 3.4.1 Off-gas analyzer
22	Liquid phase DO hardware Liquid phase DO hardware 3.5.4 Miscellaneous equipment 3.5.4 Miscellaneous equipment Procedure Procedure 3.6.1 Conduct of test 3.6.1 Conduct of test 3.6.2 Analyzer operation 3.6.2 Analyzer operation
23	3.6.3 Sampling criteria 3.6.3 Sampling criteria 3.6.4 Recorded data 3.6.4 Recorded data Off-gas calculations Off-gas calculations 3.7.1 General 3.7.1 General 3.7.2 Summary data sheet 3.7.2 Summary data sheet
24	3.7.3 Ancillary information 3.7.3 Ancillary information 3.7.4 Report of results 3.7.4 Report of results 3.8 Quality assurance/quality control procedures 3.8 Quality assurance/quality control procedures 3.8.1 Leak test of analyzer module and conduit hose 3.8.1 Leak test of analyzer module and conduit hose 3.8.2 Oxygen sensor calibration 3.8.2 Oxygen sensor calibration 3.8.3 Sample plan adequacy 3.8.3 Sample plan adequacy 3.9 Accuracy and precision 3.9 Accuracy and precision
25	Tracer Measurement of Oxygen Transfer Tracer Measurement of Oxygen Transfer 4.1 Objective 4.1 Objective 4.2 Theoretical basis 4.2 Theoretical basis
26	4.3 Assumptions and limitations 4.3 Assumptions and limitations
27	4.4 Apparatus 4.4 Apparatus 4.4.1 Liquid scintillation spectrophotometer 4.4.1 Liquid scintillation spectrophotometer 4.4.2 Grab sampling device 4.4.2 Grab sampling device 4.4.3 Alternate continuous-flow sampling arrangement 4.4.3 Alternate continuous-flow sampling arrangement 4.5 Procedures 4.5 Procedures 4.5.1 Tracer quantities 4.5.1 Tracer quantities 4.5.2 Tracer release 4.5.2 Tracer release
28	4.5.3 Sampling locations test durations and sampling frequency 4.5.3 Sampling locations test durations and sampling frequency