CHAPTER-XVIII

BLOCK INSTRUMENTS INSTALLATION

. SECTION 'A' - GENERAL
18.1 Fixture
18.2 Painting
18.3 Transmission Media and other wires
18.4 Block instruments distinction of
18.5 Protective meanures against power line parallelism
18.6 Earth
. SECTION 'B' -  SINGAL LINE TOKEN INSTRUMENTS
18.7 to 18.9 Installation
18.10 to 18.13 Tests to be conducted after installation and before commissioning
. SECTION 'C' - DOUBLE LINE BLOCK INSTRUMENTS
18.14 Relays
18.15 Block Release
18.16 to 18.20 Tests to be conducted at the time of installation
. SECTION 'D' SINGLE LINE TOKENLESS BLOCK INSTRUMENT
18.21 Mounting of instrument
18.22 Checks required before installation of instrument
18.23 Issulation Resistance
18.24 Block Release
18.25 to 18.30 Testing of Single Line Tokenless Bleck Block Instruments
. MAINTENANCE
. SECTION 'E' TOKEN INSTRUMENTS - GENERAL
18.31 Register of block Instruments
18.32 Censuse of Tokens
18.33 Damaged Tokens
18.34 to 18.36 Lost Tokens
18.37 Balancing Token
18.38 Token pouches
18.39 Responsibility of the Operating Staff
18.40 Importance of bell signals 
. SECTION 'F' - BLOCK INSTRUMENTS & THEIR ANCILLARY APPARATUS ENERAL INSTRUCTIONS MAINTENANCE
18.41 Maintenance Check
18.42 Overhauling of Block Instruments
18.43 to 18.46 Block Earths
. SECTION 'G' - MAINTENANCE - DETAILED INSTRUCTIONS
18.47 to 18.54 Token Instruments
18.55 to 18.56 Double Line Block Instruments
. SECTION 'H' - MAINTENANCE SCHEDULE
18.57 Maintenance Schedule for Block Instruments
. SECTION 'I' - AXLE COUNTER BLOCK INSTRUMENTS
18.58 Maintenance of Axle Counter Block Instrument
. SECTION 'J' - SOLID STATE BLOCK SYSTEM
18.59 Maintenance of Solid State Block System
Annexure 24 Painting Scheme-Block Signalling Equipment
Annexure 25 Format for recording particulars of lost token
Annexure 26 Token Balance Book Format
Annexure 27 Method of finding out the resistance of an earth
Annexure 28 Schedule of Maintenance for Block Instrument