Environmental Engineering Reference
In-Depth Information
12
Quality Assurance/
Quality Control (QA/QC)
for Waste Stabilization/
Solidification
Caijun Shi
CONTENTS
12.1 Introduction................................................................................................. 320
12.2 General Principles Of QA/QC ................................................................... 320
12.2.1 Quality Assurance.......................................................................... 320
12.2.2 Quality Control .............................................................................. 321
12.2.3 Quality Control Plan...................................................................... 321
12.3 Frequency and Statistic Evaluation of QA/QC Testing............................. 322
12.4 Quality Control Chart ................................................................................. 324
12.5 Waste Sampling .......................................................................................... 326
12.6 Treatability Studies ..................................................................................... 326
12.7 QA/QC for Field S/S Operations ............................................................... 327
12.7.1 QA/QC Plan for Field S/S Operation ........................................... 327
12.7.2 Pre-Treatment Testing.................................................................... 328
12.7.2.1 Cements and Additives ................................................... 328
12.7.2.2 Wastes ............................................................................. 328
12.7.2.3 Mixing Water .................................................................. 329
12.7.3 Mixing and Placement................................................................... 329
12.7.4 Sampling and Testing Freshly Mixed Waste................................. 329
12.7.4.1 Sampling Freshly Treated Wastes .................................. 329
12.7.4.2 Content of Cement or Additives..................................... 329
12.7.4.3 Volume Increase.............................................................. 330
12.7.4.4 Bulk Density and Moisture Content............................... 330
12.7.4.5 Consistency ..................................................................... 330
12.7.4.6 Concentration of Contaminants ...................................... 330
12.8 Testing Hardened Treated Waste Forms .................................................... 330
12.9 Quality Control Chart for S/S .................................................................... 331
12.10 Early Failure Indicators and Adjustments to the Mix Design................... 331
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