Law Department notice on WTC document preservation, Oct 2001

NYC 9/11 Public Portal Document

was Heat Stress Management Standard Operating Procedure

c. Rest Areas - Rest areas should be air conditioned if possible. The heart rates of workers who recover in air conditioned areas will be reduced faster and to lower rates than those that recover in non-air conditioned areas.

d. Manage Work/Rest Schedule - The following woric/rest schedule shall be used as a guideline:

Adjusted Temperature Active Work Time Using Impermeable Protective Gear 75 or less 50 ~ 80 ____________________ 40_____________________ 85 ____________________ 30_____________________ 90 ____________________ 20_____________________ 95 ____________________ 10_____________________ 100 0

To calculate the adjusted temperature: T (adjusted) = T (actual) + (13 X fraction sunshine) Measure the air temperature with a standard thermometer. Estimate the fraction of sunshine by judging what percent the sun is out: 100% sunshine = no cloud cover = 1.0, 50% sunshine = 50% cloud cover = 0.5, and 0% sunshine = full cloud cover = 0.0. Reduce or increase the work cycle according to the guidelines under heart rate and body temperature.

6.0 REFERENCES

• Occupational Safety and Health and Guidance Manual for Hazardous Waste Site Activities • Patty’s Industrial Hygiene and Toxicology, Fourth Edition • OSHA Web Site http://www.osha-slc.gov/SLTC/heatstress/index.html

7.0 ATTACHMENTS

None

8.0 RECORD KEEPING

Records which facilitate the tracking of employee fluid consumption and work/ rest cycles will be generated.

9.0 EQUIPMENT

• Oral thermometers and hygienic slip covers or aural thermometers with hygienic slip covers • Thermometer to measure air temperature • Cool water and/ or electrolyte containing fluids (e.g., Gatorade) • Ice cooled vests • Materials to create shaded work areas

WXS Infrastructure & Environment, /nc

NYC-WTC_000145121