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A Controller of Site safety or COSS is a person experienced through the Network Rail to make sure Protected follow for function taking place on or near railway tracks and infrastructure. Their Key part would be to set up a safe procedure of work to protect staff members from trains and mechanised vehicles.

The popular Risk-free techniques of Doing the job in which the personnel are shielded from line open to practice movements, either by blocking some or all lines to workers or managing the gap the group is through the monitor (named Safeguarded/Fenced/Separated areas if you want of thought). This technique was formerly known as a Environmentally friendly Zone. This can be the safest technique for Doing the job because of the higher risks with trains going at pace, although several incidents however take place inside blocks.

Open up Line Operating (formerly called Purple Zone) signifies the lines are open up to practice actions; This really is found as additional dangerous than Safeguarded/Fenced/Divided locations, and is avoided while in the rail field where practicable.

The COSS is answerable for the safety of your entire group and is particularly subject to prosecution must another person be killed or hurt by their carelessness.

To become a COSS, rolling stock jobs an individual ought to have served an appropriate time frame around the railways and undertake a five-day course. That is then followed by a duration of mentoring by a highly skilled COSS and after that impartial standard assessments making sure that the topic is competent to undertake their position properly and efficiently.

The principles about carrying out the role of a COSS are stated during the Rule Book [1] a list of files issued to track employees detailing their obligations.

A COSS is distinguishable on web site by donning a blue armlet about the left arm or higher body on which the term "COSS" is printed in white text.

Beforehand, the COSS was known as the individual Answerable for Operate/Possession, or PICOW/PICOP.