Pipeline owners and operators are often faced with a number of challenges when it comes to assessing integrity,  which  are  often  centered  around  access,  particularly  when  the  pipework  is  buried  or  sub sea. In addition,welds create potential areas of weakness that require inspection to confirm integrity.

petrohouse offers  its  clients  a  number  of  services  designed  to  assess  the  integrity  (internal  and external) of pipework, which takes the uncertainty out of knowing its condition. Client corrosion monitoring programs may consist of one or more of the following;

Cathodic Protection (CP)

CP is widely used for controlling corrosion of metallic pipework or structures that are in contact with electrolytically conducting substrates such as soil and water, by reducing the metal’s corrosion potential and thus its corrosion rate. 

Direct Current Voltage Gradient (DCVG)
DCVG uses voltage gradients within the substrate surrounding a buried pipeline to assess its coating, allowing defects to be located and sized. To be effective the pipe has to be protected by an impressed current cathodic protection system, although a temporary equivalent can be installed for the purposes of the inspection. 

Close Interval Potential Survey (CIPS)
CIPS is designed to assess protection along the entire length of pipeline, by measuring the pipe / soil potential  using  a  fixed  trailing  wire  connected  to  the  pipe  and  a  set  of  reference  electrodes  located along the inspection length (typically every metre).

Intelligent Pigging
An intelligent pig is a device, containing one or more measuring instruments, that is placed inside a pipeline  to  collect  data  along  its  length  in  an  attempt  to  assess  the  integrity  of  the  pipe.  Once analysed, the information can be used to pinpoint areas of concern and help coordinate maintenance resources appropriately.

Welding Inspection
Various  NDT  techniques  can  be  used  to  assess  the  integrity  of  pipeline  welds,  be  it  during  its construction  or  an  in service  inspection.  In  addition  to  conventional  methods,  more  advanced techniques can be more cost effective, including phased array, time of flight diffraction.Should  you  require  further  information  regarding  our Pipeline  Integrity services,  please  contact petrohouse  by  emailing reda@petrohouse-eg.com or  contact  your  local  office  who  will be  happy  to answer any queries www.petrohouse-eg.com.