IEEE 1628 : 2009

RECOMMENDED PRACTICE FOR MAINTENANCE OF DC OVERHEAD CONTACT SYSTEMS FOR TRANSIT SYSTEMS

Institute of Electrical & Electronics Engineers

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1. Overview
   1.1 Scope
   1.2 Purpose
   1.3 Application
   1.4 Other requirements
2. Normative references
3. Definitions
   3.1 Qualified person
4. Description of overhead contact systems (OCS)
   4.1 General
   4.2 Conductor tensioning
   4.3 Support method
   4.4 OCS styles
   4.5 OCS support and alignment
5. Maintenance of OCS equipment
   5.1 OCS maintenance supervision
   5.2 Safety equipment
   5.3 Precautions
   5.4 Precautions with vehicles
   5.5 Precautions when working on or near public roads
   5.6 Precautions for working at heights
   5.7 Precautions with wires and ropes
   5.8 Working on electrified lines
   5.9 Switching procedure
   5.10 Working on energized lines
   5.11 Negative return connections and bonding
6. Medical emergencies
   6.1 First aid treatment for burns and scalds
   6.2 Transfer of personnel or passengers between rolling
       stock equipment on adjacent tracks
   6.3 Pole top rescue
   6.4 Resuscitation from electric shock
   6.5 Instructions for releasing victim from contact with
       a live conductor
7. Maintenance tools and equipment
   7.1 Ladders
   7.2 Road/rail vehicles
   7.3 Voltage detectors
   7.4 Hot sticks
   7.5 Grounding equipment
   7.6 Height and stagger gauges
   7.7 Contact wire wear gauges
   7.8 Dynamometers
   7.9 Torque wrenches
   7.10 Contact wire straightening tools
   7.11 Contact wire twisting tools
   7.12 Lifting and tensioning device
   7.13 Compression tools
   7.14 Lineman's toolbox
   7.15 Vehicle tool box
   7.16 Temporary insulating equipment
8. Inspections and preventive maintenance
   8.1 General
   8.2 Visual inspection
   8.3 Periodic inspection and preventive maintenance
   8.4 Clearances
   8.5 Lubrication of assemblies
   8.6 Foundations
   8.7 Poles and support structures
   8.8 Paint coating and galvanizing
   8.9 Grounding and ground rods
   8.10 Down guys
   8.11 Warning signs and structure number plates
   8.12 Lightning arresters
   8.13 Insulators
   8.14 Contact wire supports
   8.15 Single contact wire suspension
   8.16 Catenary
   8.17 Contact wire wear
   8.18 Other wires
   8.19 Contact wire splices
   8.20 Tensioning devices
   8.21 Disconnect switches
   8.22 Section insulators
   8.23 Trolley pole special work
   8.24 Cathodic protection
   8.25 Reporting
9. Repairs and upgrades
   9.1 General
   9.2 Recommended procedures
   9.3 Foundation replacement
   9.4 Support structure replacement
   9.5 Cantilever replacement
   9.6 Registration assembly replacement
   9.7 Wire pull-off assembly replacement
   9.8 Backbone assembly replacement
   9.9 Headspan and cross-span replacement
   9.10 Termination replacement
   9.11 Insulator replacement
   9.12 Switch replacement
   9.13 Jumper and tap connector replacements
   9.14 Insulated feeder cable replacements
   9.15 Surge arrester replacement
   9.16 Contact wire replacement
   9.17 Messenger and auxiliary wire replacement
   9.18 Split-tension or half-tension air break replacement
   9.19 Yard and shop replacements
   9.20 Trolley special work (switch/crossover) replacement,
        conventional cut-in type assemblies

Abstract

Describes overhead contact system maintenance practices and procedures including maintenance techniques, site inspection and test procedures, and maintenance tolerances, for heavy rail, light rail, and trolley bus systems.