DN-08a – Disconnection of Steel service bend to metal main

• Site conducted

• Conducted on

  Date

• Prepared by

• Location
  Address

• Operative being assessed

  Yes

  No

  N/A

• Uses the Voltstick prior to undertaking any work on any exposed metalwork to ensure it is safe to <br>continue and repeats when necessary

  Yes

  No

  N/A

• Carries out checks to establish the number of customers being supplied and isolates ECV prior to <br>disconnection

  Yes

  No

  N/A

• Removes wrapping from the service pipe at two places where cuts will be made, approximately 300mm <br>apart and cleans pipe

  Yes

  No

  N/A

• Fits a temporary continuity bond (TCB) across section to be removed ensuring that the pipe where the <br>TCB is to be clamped is clean and wired brushed to a bright finish to ensure a good electrical contact

  Yes

  No

  N/A

• Question - What action needs to take place if the Voltstick glowed or sparking occurred when fitting or removing the TCB?

• Answer - Cease work and advise team manager

• Wraps the pipe with a suitable denso tape/ mastic bandage prior to cutting

  Yes

  No

  N/A

• Dons breathing apparatus complete with associated PPE

  Yes

  No

  N/A

• Cuts through the denso tape/mastic bandage and pipe using a hacksaw and seals the cut with the <br>mastic as the cutting proceeds to minimise release of gas. Ensures that the cut piece (approx. 300mm) <br>can be easily removed<br>

  Yes

  No

  N/A

• Removes the cut section and fits caps to both ends, removes bend and plugs hole with the minimum <br>delay to reduce loss of gas

  Yes

  No

  N/A

• Question - What action should be taken to the plug to avoid a build-up of static charge and the possibility of a <br>spark?<br>

  Yes

  No

  N/A

• Answer - The plug should be earthed by resting the plug on the main about 350mm from the hole and slid along the
  surface of the pipe to the hole
  

• Tests the plug with SGN approved leak detection fluid

  Yes

  No

  N/A

• Removes continuity bond once the atmosphere is gas free

  Yes

  No

  N/A

• Disconnects / removes the existing standpipe, where possible and seals the standpipe entry

  Yes

  No

  N/A

• Question - What action should be taken if it is not possible to remove the standpipe?

• Answer - The standpipe should be left in-situ and capped off and labelled with (SGNB608) to indicate service
  disconnected

• Seals any abandoned service pipe ends in the ground using suitable caps

  Yes

  No

  N/A

• Checks properties to confirm that only the properties to be cut-off have been isolated

  Yes

  No

  N/A

Sign off

• Name of assessor

  Yes

  No

  N/A

• Pass or refer for additional training

  Pass

  Fail

  N/A