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A=COM S3AM-208-PR1 Personal Protective Equipment. 4.6 Ultraviolet Radiation Protection 4.6.1 Broad-spectrum UV radiation is classified as a known human carcinogen. UV radiation can cause harmful effects from both chronic and acute exposures including reddening of the skin (regardless of skin tone), accelerated skin aging, and damage to the eyes(e.g., cataracts, retinal burns, or welder's flash), and sunburn. Employees may be exposed to UV radiation from natural sunlight or manmade sources such as germicidal lamps(e.g., UV groundwater treatment systems)and welding. 4.6.2 While not required,the completion of an exposure or UV risk assessment will assess the risk posed by UV at the site. Such an assessment can be included in the SH&E plan and as part of a Task Hazard Assessment(THA). Special consideration should be given to work activities at higher elevations as the intensity of UV exposures are significantly higher than at lower elevations. Typically, UV exposure can increase 4-5%for every 1000 feet ascended.Also, some medications (e.g.,Tetracycline)can increase sensitivity to UV exposure. 4.6.3 Control measures will be implemented at a worksite according to the conditions and work performed. 4.6.4 Engineering Controls • Operations producing IR or UV radiation may be segregated or separated from other operations(e.g. use of automated systems,walls, screens, etc.); • Employees will be encouraged to maximize use of the shade provided by trees, buildings, and other structures; • Where there is limited access to natural shade,fixed or portable shade structures will be provided where practical; • It is acknowledged that the provision of shade does not provide total protection from UV; therefore, it is recommended that outdoor workers adopt personal protection strategies such as protective clothing, sunscreen, and the wearing of hats in addition to using shade. 4.6.5 Administrative Controls Consideration will be given to the reorganization of outdoor work programs to reduce UV exposure including, but not limited to: • Use of the UV Index to assess UV hazards; • Rescheduling work hours to enable workers to start earlier during May-September; The UV Index, shown in Table 1, can help employees be aware of the expected level of UV radiation exposure on any given day. Table 1. UV Index Exposure Index Category Number Sun Protection Messages Low < 2 Wear sunglasses on bright days. In winter, reflections off of snow can nearly double UV strength. If you burn easily, cover up and use sunscreen. Moderate 3-5 Take precautions, such as covering up and using sunscreen. High 6-7 Protection against sunburn is needed. Very High 8-10 Take extra precautions. Unprotected skin will be damaged and can burn quickly. Extreme 11+ Take all precautions. Unprotected skin can burn in minutes. Non-Ionizing Radiation(S3AM-121-PR1) Revision 3 July 31,2019 PRINTED COPIES ARE UNCONTROLLED.CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 6 of 8