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GRM CHPP2 MET Checks
GRM CHPP2 MET Checks
Jessica Wright

GRM CHPP2 MET Checks

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Free GRM CHPP2 MET Checks Checklist

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Title Page

  • Conducted on

  • Prepared by

Screening Performance (Daily Checks)

Deslime Screens

  • Even distribution across screen

  • Screen feed bias (bed depth)

  • Sieve bends free of flooding

  • Sprays correctly positioned

  • Spray water flowrates optimised

Sink Screens

  • Even distribution across screen

  • Screen feed bias (bed depth)

  • Screen spillage

  • Free of surging

  • Sieve bends free of flooding

  • Sprays correctly positioned

  • Spray water flowrate optimised

  • Consistent distribution between FS + SS

Float Screens

  • Even distribution across screen

  • Screen feed bias (bed depth)

  • Screen spillage

  • Sieve bend free of flooding

  • Sprays positioned correctly

  • Sprays water flowrate optimised

Vibrating Tell Tale Screen

  • Minimal oversize

  • Screen deck free of holes

  • No flooding

Tailings Dewatering Screens

  • Material free of coal

  • Consistent moisture

  • Screen underpans clear

  • No flooding

Flotation Performance (Daily Checks)

Jameson Cells

  • Cell Froth Depths

  • Wash water running and clear

  • No leaks on tubes and downcomers

  • No blockages in downcomer and airline

  • Froth stability (no burping, mobile)

  • Product flowing well, gritty in feel

  • Wash water strainer (clean, flowing)

  • Tailings colour, sample point running

  • Wash water strainer (clean and flowing)

Buffer tank

  • Agitation operational

  • Knockdown sprays flowing

  • Level

Spirals (check if operational)

  • Build-up of oversize in spiral

  • Flush water into underpan launders

  • Splitters in equivalent positions

  • Splitters align on discharge

  • Feed distributor orifices not blocked

  • Holes and damaged piping

  • Water valve on feed sump

  • Sump level control

Cyclones (Daily Checks)

DMC Performance

  • DMC free of movement/noise

  • Siphon breathers unblocked

  • Sump swirls

  • Guage cleanliness

  • Feed flows

  • Sump holes

Tailings Cyclones

  • Free of roping or spraying

  • No leaks or external wear

  • Breathers free and clear

Spiral Cyclones

  • Free of roping or spraying

  • No leaks or external wear

Mag Separators

  • Discharge even on each drum

  • Limited water in concentrate

  • Required bath level

  • Minimum carry on drums

  • Good underflow from spigots

  • Sanding in bath

  • Underflow tailings

  • No eddies in primary underflow

Fine Coal Dewatering (Daily Checks)

Belt Filters

  • Overflow consistent at discharge

  • Cake formation first third of the belt

  • Cake free of cracking at breaker

  • Cloths tracking correctly

  • Sprays clear and effective

  • Guide rollers

  • Feed curtain condition

  • Cake thickness (even and 18mm)

  • Slime layer thickness

  • Flocculant addition

  • Bellow and paddle condition

  • Seal water condition

  • Product on carry belt

  • Build-up on carry belt

  • Air bag cloth tracking

Flocculant

  • Floc consistency

  • Passing through overflow pipe

  • Valve checks

Thickener Operation (Daily Checks)

Tailings Thickener

  • Feed well level, not overflowing

  • All sprays operational

  • Free of froth

  • Dosage points unblocked

  • Overflow clarity wedge check

  • Colour

  • Clarometer operation

Magnetite Thickener

  • Free of launder crust

  • Free of froth

  • Overflow clarity wedge check

  • Rakes turning

  • Colour

  • Sprays clear and operational

Weightometers

RC5

  • Weighframe free of build-up

  • Chains free and loose

  • Roller condition

RC6

  • Weighframe free of build-up

  • Chains free and loose

  • Roller condition

CC2

  • Weighframe free of build-up

  • Chains free and loose

  • Roller condition

R1

  • Weighframe free of build-up

  • Chains free and loose

  • Roller condition

Trends

Feedrate

  • Feedrate average from SP +/- 20tph

  • Maximum deviation from SP <100tph

  • Reclaimer rate matching bin level

DMC Control Performance

  • MIEP between +/- 0.005

  • Max deviation from SP +/- 0.01

  • Median PV vs SP +/-0.005

  • DMC pressure above 130kPa

  • Sump level control

  • Alignment of D-head (within 1D)

Jameson Cells

  • Vacuum SP -5 to -8kPa

  • Feed pressure 140-160kPa

  • Air flowrate SP

  • Diesel SP

  • MIBC SP

  • Wash water bias

Tailings Thickener

  • Rake height

  • Underflow density

Tailings cyclones

  • Tailings sump level

  • Pressure gauges at 140kPa

  • Pump pressure trend

Spiral Cyclones

  • Feed sump level

  • Pressure gauges at 85kPa

  • Pump pressure trend (cavitation)

Spirals

  • Confirm if spirals should run

  • Feed sump level

Vacuum Filtration

  • Belt filters operating at <-60kPa

Magnetite Clarifier

  • Rake height trend

  • Underflow density trend

Buffer Tank

  • Slurry and froth trend

Weekly Checks

Marcy

  • Differential

  • DMC feed medium

  • Tailings thickener UF

General Comments

  • General Comments

GRM CHPP2 MET Checks
Jessica Wright

GRM CHPP2 MET Checks

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