DIAMOND CORE DRILLING REFERENCE - Boart Longyear
4. Water Flow: Flow rate is recommended based on amount of cuttings at 6 - 8 ipm (15 - 20 cpm). Higher penetration rates should have higher flow rates. 5. Calculate water flow: High water pressure is not an indication of water flow. Measure pump rpm with tachometer. Pump output will be proportional to output at max speed e.g. FMC LO918 Nameplate,
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