Grout Pumping and Injection Operations TR 003 TABLE OF CONTENTS 1. PLAN AND PREPARE FOR GROUTING OPERATIONS ............................................................................................. 5 1.1. ROLES AND RESPONSIBILITIES .......................................................................................................................................6 1.2. PLAN AND PREPARE FOR THE SHIFT .............................................................................................................................. 6 1.3. SITE SETUP, SAFETY AND PPE.......................................................................................................................................7 1.3.1 Site Setup .....................................................................................................................................................7 1.3.2 Safety and First Aid ................................................................................................................................... 8 1.3.3 PPE................................................................................................................................................................. 8 1.3.4 Grout Burns ..................................................................................................................................................9 1.4. OPERATION OF THE GROUT PUMP .............................................................................................................................11 1.4.1 Pre-start and Start-up Checks................................................................................................................11 1.4.2 Pre-start ......................................................................................................................................................11 1.4.3 Start-up and Operation (following Pre-start) ......................................................................................14 1.4.4 Checks: ......................................................................................................................................................15 1.4.5 Pre-set Maximum (also known as refusal) Grouting Pressure (high pressure setting)..................18 2. PERFORM MEASUREMENT AND CALCULATIONS - MIXING OF GROUT.............................................................. 19 2.1. BATCHING ...............................................................................................................................................................20 2.2. MIXING OF GROUT TO SPECIFICATIONS .....................................................................................................................22 2.3. QUALITY ASSURANCE (QA) TESTING OF THE GROUT ..................................................................................................25 2.4. MUD BALANCE – OR DENSITY TEST. ...........................................................................................................................26 2.5. MARSH FLOW TIME – OR VISCOSITY TEST. ..................................................................................................................27 2.6. BLEED – WATER LOSS OR STABILITY TEST .....................................................................................................................28 3. CONDUCT GROUTING OF HOLE - GROUT INJECTION ....................................................................................... 29 3.1. OPERATING THE GROUT PLANT TO INJECT THE GROUT ................................................................................................29 3.2. INJECTING THE GROUT .............................................................................................................................................31 3.3. INJECTION CRITERIA FOR GROUND CONDITIONS .......................................................................................................32 4. RESPONDING TO PROBLEMS .............................................................................................................................. 33 4.1. WHILST INJECTING THE GROUT ..................................................................................................................................33 4.2. REPORTING..............................................................................................................................................................34 5. HOUSEKEEPING AND CLEANING THE PLANT...................................................................................................... 34 5.1. CLEANING AND MAINTAINING THE PLANT .................................................................................................................34 5.1.1 Mixer............................................................................................................................................................34 5.1.2 Agitator Tank.............................................................................................................................................34 5.1.3 Grout Pump...............................................................................................................................................35 5.2. RECORD KEEPING ....................................................................................................................................................35 5.2.1 Record Keeping for Auditing .................................................................................................................36 5.3. SPILL TREATMENT ......................................................................................................................................................37 6. SELF ASSESSMENT CHECKLIST ............................................................................................................................. 39 1. PLAN AND PREPARE FOR GROUTING OPERATIONS
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