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A Controller of Site safety or COSS is a person skilled by the Network Rail to make certain Protected apply for function happening on or in close proximity to railway tracks and infrastructure. Their Major purpose is always to arrange a safe program of work to safeguard team from trains and mechanised vehicles.

The popular Secure systems of working wherever the staff members are protected from line open up to practice movements, both by blocking some or all lines to workers or managing the space the group is from the keep track of (termed Safeguarded/Fenced/Separated areas in order of thought). This technique was formerly called a Green Zone. This can be the safest method of Functioning as a result of the upper challenges with trains going at pace, While quite a few incidents continue to happen within just blocks.

Open up Line Doing work (previously often known as Purple Zone) indicates the traces are open to educate movements; This is often found as extra dangerous than Safeguarded/Fenced/Divided parts, and is averted while in the rail field where by practicable.

The COSS is chargeable for the safety of the entire team and it is issue to prosecution need to another person be killed or hurt by their carelessness.

To become a COSS, a person should have served rolling stock jobs uk an appropriate timeframe around the railways and undertake a 5-day program. This is then followed by a period of mentoring by a qualified COSS and then independent standard assessments making sure that the topic is skilled to undertake their role properly and proficiently.

The foundations about performing the job of a COSS are mentioned inside the Rule Book [1] a set of documents issued to trace employees detailing their duties.

A COSS is distinguishable on web page by wearing a blue armlet to the left arm or higher entire body on which the term "COSS" is printed in white text.

Earlier, the COSS was referred to as the Person Answerable for Operate/Possession, or PICOW/PICOP.