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A Controller of Site safety or COSS is an individual certified because of the Network Rail to guarantee Secure apply for function occurring on or in the vicinity of railway tracks and infrastructure. Their Most important role will be to create a secure process of work to protect staff members from trains and mechanised vehicles.

The popular safe techniques of Doing work wherever the workers are protected from line open up to coach actions, possibly by blocking some or all lines to visitors or controlling the distance the team is through the track (called Safeguarded/Fenced/Separated parts if you want of thought). This technique was formerly termed a Environmentally friendly Zone. This is the safest means of Functioning on account of the higher hazards with trains relocating at pace, While quite a few incidents even now occur inside blocks.

Open up Line Doing work (formerly known as Purple Zone) suggests the lines are open up to prepare actions; That is noticed as extra risky than Safeguarded/Fenced/Separated spots, which is prevented within the rail field in which practicable.

The COSS is answerable for the protection of your complete group and is particularly matter to prosecution really should an individual be killed or hurt by their negligence.

To become a COSS, anyone must have served an appropriate length of time to the railways and undertake a rail shunter jobs 5-day training course. This is certainly then accompanied by a duration of mentoring by a qualified COSS after which impartial typical assessments to make sure that the subject is qualified to undertake their part safely and proficiently.

The foundations around doing the part of a COSS are said in the Rule Book [1] a list of files issued to track workers detailing their obligations.

A COSS is distinguishable on internet site by donning a blue armlet to the left arm or upper human body on which the term "COSS" is printed in white textual content.

Earlier, the COSS was often known as the Person Answerable for Get the job done/Possession, or PICOW/PICOP.