maintenance testing, possible breakdowns and repairs, and
troubleshooting guides. The manuals shall include single line
diagrams for the system as installed; instructions in making
[pipe-] [tank-] to-reference cell potential measurements and
frequency of monitoring; instructions for dielectric connections,
interference and sacrificial anode bonds; instructions shall
include precautions to ensure safe conditions during repair of
pipe system.
Training Course
The proposed Training Course Curriculum (including topics and
dates of discussion) indicating that all of the items contained in
the operating and maintenance instructions, as well as
demonstrations of routine maintenance operations, including
testing procedures included in the maintenance instructions, are
to be covered.
1.3
GENERAL REQUIREMENTS
A complete, operating impressed current cathodic protection system in
accordance with NFPA 70, the applicable federal, state and local
regulations, and the requirements of this contract shall be provided. In
addition to the minimum requirements of these specifications, [construction
of gas pipelines and associated cathodic protection systems shall be in
compliance with 49 CFR 192] [and] [construction of hazardous liquid
pipelines, and associated cathodic protection system shall be in compliance
with 49 CFR 195] [and] [construction and installation of underground fuel
storage tanks and associated cathodic protection system shall be in
compliance with 40 CFR 280]. The system shall include planning, inspecting
the installation, adjusting and testing cathodic protection and test system
using rectifiers and impressed current anodes, supplemented with
sacrificial anodes as needed, for utilities and equipment shown. The
cathodic protection system shall also include cables, connectors, splices,
corrosion protection test stations, ace power panels, and any other
equipment required for a complete operating system providing the specified
protection. The cathodic protection system shall include (a) calculations
for rectifier, anodes, and any recommendations for supplementing or
changing the minimum design criteria to provide the specified potentials
and (b) equipment, wiring, and wiring devices necessary to produce a
continuous flow of direct current from anodes in the soil electrolyte to
the pipe surfaces. The Contractor shall submit Detail Drawingsas specified
in the Submittals paragraph.
The installation shall meet the specified
protection criteria for a 25 year life.
1.3.1
Contractor's Modifications
The specified system is based on an impressed current system supplemented
with magnesium anodes. The Contractor may modify the cathodic protection
system after review of the project, site verification and analysis if the
proposed modifications include the impressed current anodes and rectifiers
and will provide better overall system performance. The modifications
shall be fully described, shall be approved by the Contracting Officer and
shall meet the following criteria. The proposed system shall achieve a
minimum pipe-to-soil "Instant Off" potential of minus 850 millivolts with
reference to a saturated copper-copper sulfate reference cell on the
underground metallic components of the [piping] [tanks] [_____]. The
Contractor shall take resistivity measurements of the soil in the vicinity
of the [pipes] [tanks] [_____] and ground bed sites; based upon the
SECTION 13112A
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