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A Controller of Site safety or COSS is a person qualified by the Network Rail to be certain Protected exercise for do the job happening on or in the vicinity of railway tracks and infrastructure. Their primary part would be to setup a secure procedure of work to shield staff members from trains and mechanised vehicles.

The preferred safe systems of working where by the team are protected against line open to coach movements, possibly by blocking some or all lines to visitors or controlling the gap the team is with the monitor (called Safeguarded/Fenced/Divided locations if you want of thought). This method was previously known as a Environmentally friendly Zone. This is the safest technique for Doing work because of the upper risks with trains relocating at velocity, Even though quite a few incidents nonetheless transpire inside blocks.

Open Line Performing (previously referred to as Purple Zone) suggests the strains are open up to train movements; This is often seen as a lot more risky than Safeguarded/Fenced/Separated regions, which is averted from the rail industry exactly where practicable.

The COSS is liable for the safety of the complete group and it is topic to prosecution must a person be killed or injured by their carelessness.

To be a COSS, someone must have served a suitable timeframe within the railways and undertake a 5-day training course. This is often then followed by a duration of mentoring by a skilled COSS after which you can impartial frequent assessments making sure that the subject is proficient to undertake their role securely and correctly.

The rules all over performing the position of the COSS are mentioned within the Rule Book [1] a list of paperwork issued to trace staff detailing their duties.

A COSS is distinguishable on internet site by carrying a blue armlet around the left arm or upper entire body on which the phrase "COSS" is printed in white textual content.

Formerly, the COSS was often called the blue hat railway jobs individual In Charge Of Function/Possession, or PICOW/PICOP.