B) PERMANENT IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM:

Disconnection of TCP system

Energising the Transformer rectifier System after check up of completer system

Recording of Transformer rectifier parameter

Adjusting PSP on rectifier as per design.

PSP recording of entrie pipeline.

Recording an ode potential and output of each anode bed.

INTERFERENCE SURVEY

Due to cathodically protected foreign pipelines

Due to EHT crossing

Due to D.C. Traction

ICCP SYSTEM TESTING AND COMMISSIONING

All supplied main equipment / materials viz transformer – rectifier unit, anodes, and cables shall be tested at manufacturer’s works before despatch to site.

All equipments / system components shall be subject to pre-commissionng checks / tests / measurements, as required before, during and after their installation / erection/ construction as per normal practice.

Based on the results of the performance the output current of the T.R.Uni shall be adjusted to provide optimum level of pipe-to-soil potentials at various locations of pipelines.