What is interlocking in railway?

In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signalling appliances and tracks are sometimes collectively referred to as an interlocking plant.

What are the methods of interlocking?

The method of locking of points is the key locking in Standard-I. It is an indirect method of interlocking between signals and points. In Standard-II, a plunger type facing point lock used. The plunger lock can operated from the cabin or from the site itself.

What is the principle of interlocking?

Interlocking : Means an arrangement of signals , points and other appliances, operated from a panel or from lever frame, so interconnected by mechanical locking or electrical locking or both that their operation must take place in proper sequence to ensure safety.

What are the objectives of signaling and interlocking in railway?

The purpose of signalling and interlocking is primarily to control and regulate the movement of trains safely and efficiently. Signalling includes the use and working of signals, points, block instruments, and other allied equipment in a predetermined manner for the safe and efficient running of trains.

How many types of interlocks are there?

three types
There are three types of interlocks: – mechanical, – electrical, – logical.

How many interlocking are there in Indian Railways?

There are three levels of interlocking used by IR. A Standard I interlocked station has mechanical interlocking. It also usually has just one running line and a loop line (and perhaps a couple of sidings). These are usually branch line stations.

What is non interlocking in railway?

Non-interlocking work refers to the dismantling of existing signalling equipment (not necessarily old technology) for commissioning a new signaling system at any station or section of railways.

What is route Relay Interlocking system?

Route Relay Interlocking system is one of the important signalling systems for major yards in Indian Railways. The basic knowledge of this system can help the signal personnel in maintenance and troubleshooting of the installation under their jurisdiction.

What are the two types of interlocks?

There are two main types of interlocks: safe and non-safe. Some systems require safe and non-safe interlocks to create a control system.

What is the purpose of an interlocking guard?

According to this definition, an “interlocking device” or “interlock” is a “mechanical, electrical or other type of device, the purpose of which is to prevent the operation of hazardous machine functions under specified conditions” (generally as long as the guard has not closed).

What is non interlocking work in railway?

Page 2. NON-INTERLOCK WORKING. DEFINITION:- N.I. Working means temporary disconnection of points, signals, track circuits, axle counters and other signaling appliances. Zonal Railway Training Institute, Bhuli.

What is route relay interlocking system?