sealed by the Utility. The Contractor shall notify the Contracting
Officer, in writing, 10 days before final connections and turning on of gas
lines. The Contractor shall make necessary arrangements with the Utility
for tie in and activation of new gas lines. Only the Operating
Agency/Utility Company may reactivate the system after tie in. The
Contractor shall furnish a certification by the Operating Agency/Utility
Company that all Utility work has been satisfactorily completed.
3.12.2
Connection to Government Owned/Operated Gas Lines
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NOTE: Provide the name and location of the utility
or operating agency of the existing gas lines. Show
on the drawings, the location of valves to be
operated for existing system deactivation. When
lines are to be abandoned, consideration shall be
given to any effects the abandonment may have on an
active cathodic protection system and appropriate
action taken. If the segment is long and there are
few line valves, consideration should be given to
plugging the abandoned segment at intervals.
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The Contractor shall provide connections to the existing gas lines in
accordance with approved procedures. Deactivation of any portion of the
existing system shall only be done at the valve location shown on the
drawings. Reactivation of any existing gas lines will only be done by the
Government. The Contractor's Connection and Abandonment Plan shall be
submitted and approved prior to making any connections to existing gas
lines. This plan shall include the Operating Agency's required procedures
which may be obtained from [_____]. The Contractor shall notify the
Contracting Officer, in writing, 10 days before connections to existing
lines are to be made.
a. If facilities are abandoned in place, they shall be physically
disconnected from the piping system. The open ends of all abandoned
facilities shall be purged, capped, plugged or otherwise effectively
sealed. Abandonment shall not be completed until it has been determined
that the volume of gas or liquid hydrocarbons contained within the
abandoned section poses no potential hazard. Air or inert gas may be used
for purging, or the facility may be filled with water or other inert
material. If air is used for purging, the Contractor shall ensure that a
combustible mixture is not present after purging.
b. When a main is abandoned, together with the service lines
connected to it, only the customer's end of such service lines is required
to be sealed as stipulated above.
c. Service lines abandoned from the active mains shall be
disconnected as close to the main as practicable.
d.
All valves left in the abandoned segment shall be closed.
e. All abovegrade valves, risers, and vault and valve box covers
shall be removed. Vault and valve box voids shall be filled with suitable
compacted backfill material.
SECTION 02556A
Page 25
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