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A Controller of Site safety or COSS is anyone certified from the Network Rail to be sure Secure exercise for operate happening on or in close proximity to railway tracks and infrastructure. Their primary purpose is to build a secure process of work to safeguard staff members from trains and mechanised vehicles.

The preferred safe methods of Functioning in which the employees are shielded from line open to teach actions, possibly by blocking some or all lines to workers or managing the space the group is with the observe (named Safeguarded/Fenced/Separated regions in order of thought). This process was previously termed a Green Zone. This is the most secure technique for Performing resulting from the higher dangers with trains shifting at speed, Even though several incidents still occur in blocks.

Open up Line Performing (previously known as Purple Zone) suggests the lines are open up to prepare actions; That is witnessed as far more risky than Safeguarded/Fenced/Separated parts, and is also averted from the rail market where practicable.

The COSS is liable for the safety of the whole group and it is issue to prosecution must another person be killed or wounded by their carelessness.

To be a COSS, someone should have served telecoms project manager an acceptable time frame to the railways and undertake a 5-day training course. This is often then accompanied by a period of mentoring by an experienced COSS and then unbiased typical assessments to make certain the topic is skilled to undertake their position safely and effectively.

The foundations about doing the function of the COSS are mentioned during the Rule Book [one] a set of documents issued to track workers detailing their duties.

A COSS is distinguishable on web page by putting on a blue armlet about the left arm or upper system on which the phrase "COSS" is printed in white textual content.

Previously, the COSS was known as the Person Answerable for Perform/Possession, or PICOW/PICOP.