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A Controller of Site safety or COSS is an individual competent through the Network Rail to make certain Protected apply for work happening on or near railway tracks and infrastructure. Their Key function should be to create a secure system of work to guard staff members from trains and mechanised vehicles.

The popular safe programs of working in which the staff members are shielded from line open up to teach movements, either by blocking some or all lines to visitors or controlling the gap the group is through the observe (known as Safeguarded/Fenced/Divided regions in order of thought). This technique was previously named a Green Zone. This is the safest means of Operating resulting from the upper risks with trains shifting at speed, Though a lot of incidents continue to happen within blocks.

Open up Line working (previously often called Pink Zone) usually means the traces are open to prepare movements; this is seen as more dangerous than Safeguarded/Fenced/Separated locations, and is prevented from the rail sector exactly where practicable.

The COSS is answerable for the safety of all the group and it is subject to railway controller jobs prosecution ought to anyone be killed or wounded by their negligence.

To become a COSS, someone ought to have served an appropriate stretch of time about the railways and undertake a five-day training course. This is often then accompanied by a period of mentoring by an experienced COSS after which you can impartial typical assessments to make certain that the subject is knowledgeable to undertake their position safely and effectively.

The principles about accomplishing the position of the COSS are said in the Rule Book [1] a list of documents issued to track personnel detailing their obligations.

A COSS is distinguishable on site by sporting a blue armlet about the left arm or higher system on which the term "COSS" is printed in white textual content.

Previously, the COSS was called the Person Accountable for Get the job done/Possession, or PICOW/PICOP.