INSTALLATION CHECKLIST FOR TRANSFORMER RECTIFIER STATIONS
| Procedure | Activity / Property | Result / Check | Unit |
| Check that the installation has been de-energised | AC side DC side |
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| Make rectifier data sheet | See Table A1-1 | ||
| Check and compare rectifier unit with | Drawings Requisitions |
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| Check protection type of the enclosure | IP 20, door open IP 54, door closed |
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| Check exterior for | Rust Painting Damage Scratches Dents Broken parts |
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| Check and compare against drawings | Labels Tagplates External cable connections |
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| Check fixing bolts for | Tightness | ||
| Check for tightness by hand | Wire connections | ||
| Check cable terminals | Separated from other terminals | ||
| Check packing material | Remove packing material | ||
| Check presence of | Terminal partition Warning plates Cover plates |
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| Check inside the cubicle | Permanent electrode connections | ||
| Check rating and compare with drawings | Fuses Circuit breakers |
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| Check information/instruction plates against drawings | |||
| Check the cubicle interior | Clean, dry, free from dust and loose articles |
INSTALLATION CHECKLIST FOR IMPRESSED CURRENT SURFACE GROUNDBED
| Procedure | Activity / Property | Result / Check | Unit |
| Check anode materials and dimensions, check for damage. | Material: Silicon Iron / Magnetite /Graphite /MMO
Dimensions: Weight: Damage: |
cm x cm kg |
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| Check anode backfill type, quality, volume and weight. |
Type: Coke breeze /other Fine/course/pre-packaged Backfill, volume, weight |
m3, tons | |
| Check anode cable dimensions and check for damage of sheathing and anode connection. Measure cable resistance | Size: Length Colour coding Insulation / sheathing checked Cable connection checked Cable resistance |
mm² mohm |
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| Check the feeder system and splicing materials | None/single anode Central distribution, distribution box Ring feeder, size |
mm² | |
| Check groundbed location Excavate trench to required depth for horizontal installation Auger or drill holes for vertical anode installation Check soil resistivity |
Location correct
Measure depth + length Spacing anode holes |
m
m |
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| Horizontal:
Install anodes on layer of backfill and cover anodes.
Vertical:
Poor backfill material in hole (bottom) and centre anode in hole in tamped backfill. |
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| Connections to feeder cable connections to junction box |
Line taps, C-crimps, other, Splice kits type | ||
| Commissioning | |||
| Measure anode groundbed resistance to remote earth. | Anode groundbed resistance to remote earth | ohm | |
| Update as-built information | Location, Station name As built drawings |
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| Finish trench with native soil | Cable warning tape/tiles, groundbed markers |
INSTALLATION CHECKLIST FOR IMPRESSED CURRENT DEEPWELL GROUNDBED
| Procedure | Activity / Property | Result / Check | Unit |
| Check anode materials and dimensions, check for damage. Use suitable centralisers and suspension ropes. | Material: Silicon Iron / Magnetite / graphite / Pt-Ti / Pt-Nb /MMODimensions, Weight: Damage: Spacers, suspension rope |
cm, kg | |
| Check anode backfill type, quality, volume and weight. | Type: Coke breeze /other / fine/course backfill slurry / dry Backfill, volume, weight |
m3, tons | |
| For each anode check cable dimensions and check for damage of sheathing and anode connection. Measure cable resistance | Size, length Colour coding Insulation / sheathing checked Cable connection checked Cable resistance |
mm², m
ohm |
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| Check the feeder cable and splicing materials | None Single via junction box Size |
mm² | |
| Check borehole details. Check borehole location Drill 5 m depth and set surface casing. Drill hole to total depth and log hole using borehole checklist. Check total depth and water level in hole |
Drilling equipment suitable Location correctSurface casing, dia, length Hole diameter Total depth |
mm, m mm m |
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| Set casing according to design, record casing details, cut casing above grade |
Casing diameter / uncased Active section: steel / perforated plastic, isolating top section, steel (coated)/ plastic, length |
mm
m |
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| Install headworks with cable conduit, anode suspension system, distribution box, vent pipe, | shunts calibrated | A/mV | |
| Remove anode protection, lower anodes in centre of hole and fix suspension rope, Install vent pipe with lower anode Record installation details on “Anode log sheet” Poor coke backfill (slurry) in hole. Record backfill used, record level of backfill. Backfill with gravel above active length. |
Number of anodes per hole Use centralizers and suspension ropeVent pipe material, diameter, length Perforated over lengthCoke Used Backfill gravel, particle size, max min |
mm, m m tons mm |
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| Commissioning | |||
| Measure each anode to remote earth resistance Measure total groundbed to remote earth resistance |
Anode resistance to remote earth
Groundbed resistance |
ohmohm | |
| Update as-built information | Location, Station name |
INSTALLATION CHECKLIST FOR UNDERGROUND SACRIFICIAL ANODES
| Procedure | Activity / Property | Result / Check | Unit |
| Check anode materials and dimensions, check for damage. | Material: Magnesium / Zinc / Aluminium Dimensions: Weight: Potential: Damage: |
cm kg mV (ref) |
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| Check anode backfill | Type: Gypsum-Bentonite / other Pre-packaged / separate: |
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| Check anode cable dimensions and check for damage | Size: Length Colour coding Insulation / sheathing checked Cable connection checked Cable resistance |
mm² mohm |
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| Check the feeder cable and splicing materials | None (one anode) Single via junction box ring Splice kits |
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| Check installation details. Take soil sample if required. Remove protection,install anode in centre of hole, water down and compact backfill. Backfill with native soil. Install cable. |
Horizontal/vertical Soil sample, Resistivity: Depth bottom Hole diameter Spacing Waterproof container removed. depth top of anode backfill watered down loose backfill compacted Cable depth |
ohm.cm m mm mm m |
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| Install distribution box | No of anodes No of feeders shunts calibrated Marker post |
A/mV | |
| Commissioning | |||
| Measure anode free potential and resistance Make connection to the structure, measure anode current, adjust resistor, measure structure potential |
Anode-to-soil potential Anode resistance to remote earth Connection to structure made resistors installed anode current structure-to-soil potential |
mV (ref) ohmohm mA mV (ref) |
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| Update as-built information | Location Station name/number |
INSTALLATION CHECKLIST FOR SACRIFICIAL ANODES (MARINE, SUBSEA, INTERNAL)
| Procedure | Activity / Property | Result / Check | Unit |
| Check anode materials and dimensions, check for damage. | Material: Magnesium / Zinc / Aluminium Dimensions: Weight: Potential: Damage: |
kg mV (ref) |
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| Check anode supports and support dimensions | Distance to structure Installation by bolts / U-bolts / welding bolt holes matching |
cm | |
| Check coating if specified | Coating bottom of anode | ||
| Check and mark anode locations | Anode locations Marked | ||
| Install anodes in correct orientation, secure bolts. tack weld bolted supports coat supports/anode cores Repair structure coating |
Orientation vs. Structure (coating) Bolts / U bolts secure Welded / tack welded Supports / cores coated Structure coating repaired |
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| Commissioning | |||
| Measure anode-to-structure resistance (spot check). Measure structure to soil potential (if possible) |
Anode-to-structure resistance
structure-to-soil potential |
ohm
mV (ref) |
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| Update as-built information | Number of anodes, size, location Drawings updated |