A. Standard
Practice. In determining standard practice, the Division will be guided by the
provisions of the American Water Works Association standards and the Rhode
Island Department of Health.
B.
Construction and Maintenance. Each water utility shall construct, install,
operate and maintain its plant, structures, equipment and mains in accordance
with standard practice as defined in §
1.6(A) of this Part above, and in
such manner to best accommodate the public, and to prevent interference with
service furnished by other public utilities, insofar as practical.
1. Dead Ends. Insofar as practicable the
water utility shall design its distribution system so as to avoid dead ends on
its mains. Where dead ends are unavoidable the water utility shall provide
hydrants or "blow offs" for the purpose of flushing the mains. Mains with dead
ends shall be flushed as often as necessary to maintain the proper quality of
the water. Records shall be kept of all flushings of mains, showing the date,
place and duration, and such records used as a guide in determining the
necessary frequency of flushing of the same mains thereafter.
2. Segmentation of System. Valves shall be
provided at reasonable intervals in the mains to facilitate repairs and
minimize interruptions of service.
3. Grid Systems. Whenever feasible, the
distribution system shall be laid out in a properly segmented grid so that in
case of breaks or repairs the interruptions of service to the customers can be
kept to a minimum number.
4. Fire
Protection Service. Specification, location, installation and the
responsibility for the maintenance of fire hydrants, public and private fire
protection facilities, connecting mains, and their ownership may be subject to
negotiation between the water utility and the applicant. Fire hydrants and
public and private protection facilities shall be installed in conformity to
the requirements of the water utility and when owned by the water utility shall
be subject to such conditions as the Division may determine based upon the
compensation received for this service. Hydrants maintained by the water
utility shall be inspected and operated at least once every eighteen (18)
months, and shall be checked for freezing as often as necessary to ensure that
they are functioning properly, unless the responsibility for inspecting and
operating the fire hydrant is assumed by the local fire department or other
appropriate entity. Where this is the case, the water utility retains
responsibility for repairing or replacing any fire hydrant out of service
within seven (7) days of such hydrant being reported out of service. A record
of each hydrant maintained by the water utility shall be retained showing the
size, type, location, date of inspection and flushing and the results
thereof.
5. Valves. Each water
utility shall periodically inspect the valves on its distribution system. A
record of each valve shall be kept showing the size, type, location date of
inspection and the results thereof. These records shall be kept for a five (5)
year period.
6. Service Pipes. The
minimum size of the service pipe shall not be less than 3/4 inch nominal
size. Each service pipe shall be provided with an individual shutoff prior to
the meter on that service pipe.
7.
Inspection of Service Pipe. In the installation of a service pipe, the customer
shall not install any tee or branch connection and, if required, shall leave
the trench open and pipe uncovered until it is inspected by the water utility
and building official and shown to be free from any irregularity or
defect.
C. Disinfection
of Facilities. Disinfection of facilities shall be as approved by the Rhode
Island Department of Health.