Water Specification [DOC] - City of Barrie

City of Barrie
Water Distribution Specification
Section “F” - Installation and Construction
F-6
February, 2005
15.0 SWABBING/CHARGING THE WATERMAIN
15.1 Swabs shall be supplied by the City’s Representative on the site. The swabs shall be
numbered and the City’s Representative is required to witness the installation of swabs by
the Contractor. A swabbing schedule shall be prepared by the Developer’s Consultant and
approved by the City’s Representative. The swabbing schedule shall indicate where the
swabs are to be installed and removed.
15.2 Swabs up to and including 250 mm may be taken out of hydrants, if available. If hydrants
are not located in suitable areas then risers shall be installed by the Contractor, at his
expense, to facilitate the removal of swabs. All risers shall be properly restrained and
installed above ground. All swabs over 250 mm must be taken out of risers. Refer to
BSD-45.
15.3 The City’s Representative shall remove the swabs. However, the Contractor shall be
required to provide assistance, at his expense. The Contractor must supply a means of
swabbing the system as determined by the City’s Representative. It will be the responsibility
of the Contractor, during swabbing, to supply a water course for the water to escape without
causing damage/erosion to the existing grade of the property or adjacent properties.
15.4 Any damage caused by swabbing the watermain must be restored to its original state or
better, by the Contractor. The City shall not be responsible for any damage or repairs during
swabbing.
15.5 All swabs shall be accounted for and removed from the system prior to pressure testing the
system. Any swabs that are not accounted for must be located and removed, including
material, labour, equipment and excavation, with no cost to the City.
16.0 PRESSURE TESTING
16.1 The Contractor shall strive to install a system that has zero leakage and zero pressure drop
when tested. Pressure testing of all new water systems will be completed by the City’s
Representative.
16.2 The pressure test will be for a two hour period at 150 psi zero leakage and zero pressure
drop. If the pressure test meets this criterion, the system as a whole, shall be accepted.
16.3 If the above criterion is not met, the system will be divided into sections no greater than
305m in length. Each section will be tested individually and will be required to meet the
allowable leakage and test pressure criteria, as outlined in the AWWA Specification
C-600-99; Section 4 "Hydrostatic Testing" and Section 4.1 "Pressure and Leakage Test".