Hydrostatic tests
Technical Brief

Description  Hydrostatic testing involves filling a pipeline with water and then pressurizing it to a level that exceeds normal operation pressure according to the Canadian of Energy Pipeline Association (CEPA)
GoalThis ensures that there are no defects in the pipeline (CEPA)
Leave To Open: 
Logically, the hydrostatic test happens before the pipeline is put into service, and is normal procedure for the gas and oil transport industry in Canada.
Overflow product :  water
Financial impact : costs money
Duration :  4 or 8 hours
Recommended by :Richard Kuprewicz, pipeline security expert (8/2013, page 30, recommendation 1), Ontario energy ministry (OEB, 10/2013), Ontario Pipeline Landowners’ Association (OPLA, 10/2013), Equiterre coalition (10/2013), the Communauté Métropolitaine de Montréal (CMM, 11/2013), the Québec government (CAPERN, 12/2013).
History of 9B :  Successful tests on the length of the pipeline in the two following cases:

  1. before the initial opening in 1976 (west=>east direction)
  2. before the reversal in 1997 (east=>west direction)

Required by the National Energy Board ? Does not specify the scope of the tests (http://www.neb-one.gc.ca/bts/ctrg/gnnb/flngmnl/fmgdt-fra.html) but reserves to itself the right to require them before authorization to activate the pipeline