Safe Job Procedures

Safety Job Procedures are developed for Critical Tasks and are step-by-step instructions on how to safely complete a specific task (e.g. coordinating an excavation). They will clearly identify the hazards a worker will be exposed to, the steps required to complete the task (in order), the control measures, and what to do in an emergency.

Critical Tasks are operations that have been assessed and determined to have the potential to produce major loss to people, equipment, process, or the environment (Risk Score of 6 or less). Polygon has developed Safe Job Procedures where coordination of more than one scope of work is required.

Risk Evaluation

Hazard Probability has been evaluated as:

1. Likely / immediate (has occured in the past and likely to occur at least once per project)
2. Probable (has occured in the past and likely to occur once in a two year period)
3. Possible (may or may not have occured in the past but may have occured in industry within the past three years or is reasonably predictable)
4. Remote(has not occured in the past, has not occured in industry within the past 10 years, or is not reasonably predictable)

Hazard Severity has been evaluated as:

1. Extreme (one or more fatalities, complete loss of completed structures)
2. Major (possible fatality or serious, life-altering injury, partial loss of completed structures)
3. Moderate (injury requiring medical aid, damage to equipment or materials requiring parts replacement or recertification)
4. Minor(injury requiring first aid only, damage to equipment or material requiring repair and reinspection only

Hazard Frequency has been evaluated as:

1. > 75% of the day one or more workers are exposed
2. 75-50% of the day one or more workers are exposed
3. 50-25% of the day one or more workers are exposed
4. < 25% of the day one or more workers are exposed

Risk Score will be represented as "P#" for Probability, "S#" for Severity, and "F#" for Frequency with the Result being the product of adding the #s, represented as "R#". The lower the R value, the higher the priority to address. For example, the hazard of an excavation collapse on a Polygon project has been evaluated to have a Possible Probability, a Exteme Severity, and one or more workers are exposed to the hazard 75-50% of the day, with the result represented as P2:S1:F2=R6

Table of Contents

• Excavation > 1.2 m
• Hot Work
• Work at Height
• Tower Crane