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Hovsan and Surakhani · Onshore

Pipeline inspection programme in Hovsan

A year of wall thickness surveys on field lines; the worst sections went for replacement

Client
A production department of the national oil company
Period
January 2023 – December 2023 (12 months)
Most people on site in a day
8
Man-hours
17,300
Lost-time injuries
0
Oil pumpjacks on a hilly field

The brief

The production department wanted to know which field lines to replace first. It gave us a year-long wall thickness survey and seconded NDT technicians for that period.

In figures

of line surveyed
41km
of wall thickness
9,600readings
sent for replacement
27sections

How the work went

  • Six NDT technicians worked to the client’s plan for 12 months.
  • Thickness was read every 50 m and at every bend; doubtful spots were mapped with phased array.
  • Results were collected line by line, with sections nearing the allowed wall marked in red.

Result

41 km of line surveyed; 27 sections went into next year’s replacement plan.

The client’s words
For the first time we know in numbers how much life each line has left, and we split the budget by it.

The department’s chief mechanical engineer

Services

Equipment used

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