The contractor has built the ground bed
with layer-by-layer compaction, reinforced the foundation, built columns, walls, ceiling, cross-beams of the basement and the first floor.
In a filing with FERC last April, INGAA argued that conventional ground bed
installations for cathodic protection commonly involve construction outside of the right-of-way, and should not require Commission approval.
Top driven rollers feed the lumber through on precision ground bed
plates, holding it squarely against the bed plates during the cutting process.
A ground bed
edged with concrete to separate it from the walk contains a field of drainage tile and six inches of crushed stone.
In a filing with FERC last April, 1NGAA argued that conventional ground bed
installations for cathodic protection commonly involve construction outside of the right-of-way and should not require approval.
Each consists of a rectifier unit rated at 230 VAC, 30 V, 24 A DC and a remote surface ground bed
consisting of 20 high-silicon, cast-iron anodes.
For close distributed anode beds installed under the tank-bottom plate, the tank-bottom plate is located within the voltage gradient of the anode ground bed
. For such installations, in addition to "ON" potential, the 100 mV polarized potential decay criteria or the 850mV "INSTANT-OFF" tank to sand/soil potential with respect to Cu/CuSO4 reference cell criteria should be considered for monitoring of the electrical potential to ensure achievement of adequate polarization level.
These include coating quality, soil resistivity, available locations for electrical power, ground bed
fight-of-way issues, accessibility for maintenance, and AC and DC stray current interference.