Inspection of Tailings Storage Facility

• Name of the TSF

• Operator of the TSF

• Inspection by:

• Location of the TSF
  Address

• Date of inspection

  Date

• Summary of the inspection

General information

• All required permits/approvals available?

  Yes

  No

• Missing permits/approvals are:

• Tailings discharge volume per day/month/year

• Raising rate of the TSF per year if constructed with lifts

• Remaining service life of the TSF

Tailings composition

• Mineral composition of the tailings

• Sulfide minerals containing in the tailings

• Density of the tailings as slurry

• Density of consolidated tailings

Geometrical aspects of TSF

• Surface area of each TSF (in ha)

• Altitude of TSF crest

• Height of TSF crest above toe

• Embankment upstream/downstream slopes and width

• Total length of embankment

• Volume of TSF (filling level in%)

Water management of the TSF

• Amount of water used in the plant

• Amount of water carried in the tailings

• Is there an available water recycling system?

  Yes

  No

• Amount of recycled water to the plant

• Amount of treated water outflow

• Amount of estimated seepage

• Amount of estimated water evaporation

Monitoring and control systems

• Emergency management by means of

  Select Freeboard Spillway Pipeline trench Reserve pumps Outrun distance calculation and designation of safe zones None of the above

  • Freeboard
  • Spillway
  • Pipeline trench
  • Reserve pumps
  • Outrun distance calculation and designation of safe zones
  • None of the above

• Are there monitoring and control systems for

  Select Consolidation degree of tailings Dam movement Phreatic surface in the dam Water quality when discharged to environment None of the above

  • Consolidation degree of tailings
  • Dam movement
  • Phreatic surface in the dam
  • Water quality when discharged to environment
  • None of the above

• SOPs for

  Select Tailings discharge Embankment raising and construction Emergency

  • Tailings discharge
  • Embankment raising and construction
  • Emergency

• Are there soil erosion control measures for the tailings?

  Yes

  No

• Is there a map of all tailings with their respective residual grades?

  Yes

  No

• Are there grievances or complaints of the surrounding population/third parties?

• Assessment of the physical stability

  Select Ok Ok with limitations Compromised At risk

  • Ok
  • Ok with limitations
  • Compromised
  • At risk

• The key factors for the classification as "compromised" or "at risk" are

  Select Embankment stability Water management Surface erosion Piping erosion Fractures in slopes and crest Missing freeboard

  • Embankment stability
  • Water management
  • Surface erosion
  • Piping erosion
  • Fractures in slopes and crest
  • Missing freeboard

• Assessment of the environmental stability

  Select Ok Ok with limitations Compromised At risk

  • Ok
  • Ok with limitations
  • Compromised
  • At risk

• The key factors for the classification as "compromised" or "at risk" are

  Select Effluent water quality Dust generation Erosion Spills AMD Seepage in the underground Chemical load of effluent Radioactivity

  • Effluent water quality
  • Dust generation
  • Erosion
  • Spills
  • AMD
  • Seepage in the underground
  • Chemical load of effluent
  • Radioactivity

General information about the TSF

• What is the tailings producing process

  Select Gravity concentration Flotation Ground sluicing Other

  • Gravity concentration
  • Flotation
  • Ground sluicing
  • Other

• TSF layout

  Select Cross valley Single side hill Multiple side hill Ring dyke Single valley bottom Multiple valley bottom

  • Cross valley
  • Single side hill
  • Multiple side hill
  • Ring dyke
  • Single valley bottom
  • Multiple valley bottom

• Number of TSF

• Operation procedures if more than 1 TSF

  Alternating

  Simultaneous

• Types of TSF construction

  Select Upstream TD Downstream TF Centerline TF WRTTSF Other

  • Upstream TD
  • Downstream TF
  • Centerline TF
  • WRTTSF
  • Other

• Construction method

  Select Manual Dozer Excavator

  • Manual
  • Dozer
  • Excavator

• Compaction method

  Select Manual Equipment No compaction

  • Manual
  • Equipment
  • No compaction

• Zonation of the dam

  Select Core Drains Filter No zonation

  • Core
  • Drains
  • Filter
  • No zonation

• Deposition type

  Subaqueous

  Subaerial

• Tailings consistency

  Select Slurry Thickened HDT Paste Dry

  • Slurry
  • Thickened
  • HDT
  • Paste
  • Dry

• Photos/Videos of the TSF

  Media

• Impermeabilization and liner system

  Yes

  No

• Description of the system

Tailings discharge

• Location of tailings discharge

• Type of discharge

  Select Fixed single pipe Moving single pipe Spigots Cyclone

  • Fixed single pipe
  • Moving single pipe
  • Spigots
  • Cyclone

• Foto of discharge

  Media

Drainage

• Drain type

  Select Well Collection ditch or well Collection pond Underdrains None

  • Well
  • Collection ditch or well
  • Collection pond
  • Underdrains
  • None

• Foto of the drain

  Media

Water treatment system

• Used system

  Select Wetland Limestone channels pH modifiers Floculation None

  • Wetland
  • Limestone channels
  • pH modifiers
  • Floculation
  • None

• Foto of the treatment system

  Media

Auxiliary elements

• Which auxiliary elements exist for Tailings management

  Select Pipelines (water,tailings) Pumps Trestles Trenches Water ponds Diversion ditches Culverts Road ways None

  • Pipelines (water,tailings)
  • Pumps
  • Trestles
  • Trenches
  • Water ponds
  • Diversion ditches
  • Culverts
  • Road ways
  • None

• Fotos of auxiliary elements used for Tailings management

  Media

Surrounding area of the TSF

• Catchment area conditions

  Select Erosion Steep slopes TSF crossing a drainage way

  • Erosion
  • Steep slopes
  • TSF crossing a drainage way

• Diversion ditches

  Select Available Clogged Maintained None available

  • Available
  • Clogged
  • Maintained
  • None available

• Embankment conditions

  Select Cracks on crest or slopes Vegetation on crest or slopes Erosion on crest or slopes Slumps on crest or slopes Leaks Piping erosion Wet parts on slopes Signs of overtoppling and tailings spills Defects of lining

  • Cracks on crest or slopes
  • Vegetation on crest or slopes
  • Erosion on crest or slopes
  • Slumps on crest or slopes
  • Leaks
  • Piping erosion
  • Wet parts on slopes
  • Signs of overtoppling and tailings spills
  • Defects of lining

• Spillway condition

  Select Clogged Vegetation Erosion No spillway

  • Clogged
  • Vegetation
  • Erosion
  • No spillway

Decant installation of TSF

• Type of decant system

  Select Drainage line/tower Siphon Natural overflow Barge with pump None

  • Drainage line/tower
  • Siphon
  • Natural overflow
  • Barge with pump
  • None

• Segregation efficiency

  Adequate

  Not Adequate

• Beach slope and form

  Adequate

  Not Adequate

• Decant installation

  Adequate

  Not Adequate

• Freeboards (operational/emergency)

  Adequate

  Not Adequate

• Pipelines for water recycling

  Adequate

  Not Adequate

• Liners

  Adequate

  Not Adequate

• Drainage

  Adequate

  Not Adequate

• Color of decant water

• Turbidity of decant water

• Smell of decant water

• pH of decant water

• Temperature of decant water

• Oxygen in decant water

• EC/TC of decant water

• TDS of decant water

Water discharge to the environment

• Conditions

• Smell

• Turbidity

• Color

• pH

• Temperature

• Oxygen content

• EC/TC

• TDS

Downstream water quality

• Condition

• Color

• Smell

• Turbidity

• pH

• Temperatire

• Oxygen

• EC/TC

• TDS

Environmental influences through the TSF

• Condition

• Environmental influences of the TSF to the environment

  Select Dust generation from dried sections Any spills of tailings in the TSF Ponding water in the TSF that does not serve operational purposes Reclamation activities None

  • Dust generation from dried sections
  • Any spills of tailings in the TSF
  • Ponding water in the TSF that does not serve operational purposes
  • Reclamation activities
  • None

• Effects of animals on TSF

• Effects of TSF on animals

• Effects of plants on TSF

• Effects of TSF on plants

• What kind of erosion control is used

Settling ponds

• Do waste water settling/polishing ponds exist?

  Yes

  No

• How many waste water settling ponds exist?

• Are the settlement ponds of stable structure and maintained?

  Yes

  No

• Moisture of consolidated tailings

• Particle size distribution (slime,sand,gravel)

• Acid generation potential

• Chemicals from the plant

• Metals and salts