Leakage Prevention Guidebook - Bureau of Waterworks Tokyo ...
Leakage Prevention Guidebook - Bureau of Waterworks Tokyo ...
Leakage Prevention Guidebook - Bureau of Waterworks Tokyo ...
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exhaust valve <strong>of</strong> distribution maindistribution mainBlock water meterpassing waterroute plan 1Distribution pipeDistribution pipefor shutdownwater flowpassing waterroute plan 2estimated point <strong>of</strong>damageUnable to flow water on route1 and 2 due to damages.Ensuring that 通 水 there is nodamage on route 3, flow waterto passing water area 2.passing waterroute plan 3passing water area 1 passing water area 2Fig.10<strong>Leakage</strong> volume investigation and measurement work(2) Mobile workA work for repairing an aboveground leakage found by report <strong>of</strong> a customer, by patrol <strong>of</strong> staff or by other means iscalled mobile work. In the 23 wards, staffs at 6 branch (14 <strong>of</strong>fices) and repair subcontractors at each <strong>of</strong>fices stand-by on around-the-clock basis to attend to mobile works.Inside Tama area, <strong>Tokyo</strong> <strong>Waterworks</strong> Service Co., Ltd (administrative organization <strong>of</strong> the <strong>Bureau</strong> <strong>of</strong> <strong>Waterworks</strong>, <strong>Tokyo</strong>metropolitan government) and repair contractors are at call 24 hours a day so as to undertake mobile works in cities andtowns in which the <strong>Bureau</strong> <strong>of</strong> <strong>Waterworks</strong> has a direct control on operation. Inquiries in case <strong>of</strong> accidents are handled atthe Tama Customer Service Center.On the other hand, as per cities with their <strong>of</strong>fice administration being committed to the third parties, staff <strong>of</strong> each city andrepair contractors are ready for mobile works.2.1.3 Secure high level <strong>of</strong> leak prevention technologiesWith background that we need to “maintain low rate <strong>of</strong> water leakage” and “mass retirement <strong>of</strong> veteran workers”, weacknowledge and human resources development are our significant challenges.(1) Training and Technical Development CenterTraining and Technical Development Center launched in 2005 in response to a deterioration <strong>of</strong> an environment <strong>of</strong>leakage prevention work supervises research and development directly connected with succession <strong>of</strong> technology to the- 9 -