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Workplace Heat Illness Prevention

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					Workplace Heat Illness Prevention


       SU Office of Environmental Health & Safety
           Occupational Health & Safety Program
                                         x3-0448

                                              6/11
                                  Outline
Outline
• Heat illness
  – Risk factors
  – How the body handles heat
  – Types of heat illness
• Prevention of heat illness
• Emergency response procedures
• Supervisor guidelines
                        Cal/OSHA Standard
• 8 CCR 3395- Heat Illness Prevention
• Applies to outdoor places of employment with
  heat illness potential
• Requirements
   – Heat illness prevention training for supervisors and
     employees
   – Provision of water
   – Access to shade
   – Local procedures for heat illness prevention
                                             Training
• Prior to work in warm weather, supervisors and
  employees shall be trained on the following:
   – The department’s heat illness prevention procedures
   – Environmental and personal risk factors for heat illness
   – The importance of consuming water throughout the
     work shift
   – The importance of acclimatization
   – Common signs/symptoms of heat illness
   – The importance of reporting sign/symptoms of heat
     illness to the supervisor
   – Emergency response procedures
Heat Illness
          Risk Factors for Heat Illness
• Weather conditions
   –   Temperature
   –   Humidity
   –   Air movement
   –   Radiant heat (ex: sunshine)
   –   Conductive heat (ex: ground)


• Higher intensity and/or duration of physical activity

• PPE/ clothing can be a factor (i.e., tyvek overalls)
                        Personal Risk Factors
•   Poor physical condition*
•   Age
•   Degree of acclimatization
•   Water consumption
•   Some medications*
•   Alcohol/ drugs

* Recommend checking w/ personal physician about heat illness risk
       How the Body Handles Heat

• The body tries to keep a constant internal
  temperature

• As internal temperature rises from activity,
  the body cools itself by:
  – Increasing blood flow to skin surface
  – Releasing sweat onto skin surface
                               Heat Exhaustion
• Cause:
  – Excessive loss of water and salt through sweat


• Signs & Symptoms:
  –   Headaches, dizziness, lightheadedness or fainting
  –   Weakness and moist skin
  –   Muscle cramps
  –   Mood changes such as irritability or confusion
  –   Upset stomach or vomiting
                                         Heat Stroke
• Cause:
  – Total breakdown of body’s cooling system

• Signs & Symptoms:
  –   Sweating stops-- skin is hot, red, and dry
  –   Mental confusion, losing consciousness
  –   Fainting
  –   Seizures or convulsions


   Treat as a medical emergency! Can be life
                   threatening.
Emergency Response Procedures
For any of the previously mentioned symptoms:
• Immediately call 911 or 9-911 (from a campus phone) OR transport to
   Stanford Hospital Emergency Room
• While waiting for help:
    –   Move victim to cool area
    –   Give small cup of water (if conscious and not nauseous)
    –   Loosen and/or remove clothing
    –   Fan and mist the person w/ water
    –   Apply a water-soaked towel (or ice pack wrapped in towel) to head and
        ice pack to armpits
• Contact supervisor immediately
• Anyone with symptoms must never be sent home or left unattended
  without a medical evaluation
• SUOHC follow-up for employees evaluated for heat illness
Prevention of Heat Illness
                            Access to Water

• Access to sufficient
  amounts of cool
  drinking water shall be
  available at all times.
• Recommend
  consuming at least
  four cups per hour for
  the entire shift.
                                  Access to Shade
• A shaded rest area shall be
  provided as close as practicable
  to the work area.
   – Refer to your departments local
     procedures for accessing shade
• As needed, take frequent cool-
  down breaks in the provided
  shade.
Supervisor Guidance
   Work Planning and Supervision
• Assess conditions
   – Weather forecasts -
      http://nws.noaa.gov
   – Current weather -
      http://weather.stanford.edu
   * Note: high humidity drives up the heat
      load
• For warmer periods:
   – Schedule outdoor work during cooler
     parts of the day
   – For most strenuous tasks, plan a staff
     rotation
      Work Planning and Supervision

• Worker acclimatization
  – People adapt to outdoor temperature increases
    within 4-14 days. To minimize the risk of heat
    illness:
     • Adjust work schedules and intensities during a two-
       week period
     • New employees or those returning from extended
       leaves – acclimatization is especially important
        – May not be adapted to local weather or work intensity
        – Be extra vigilant with these employees
    Work Planning and Supervision
• For outdoor temperatures ≥85°F, supervisors shall ensure:
    – Shade is present for employee rest breaks.
        • When a worker has brief periods of outdoor work without nearby shade, the
          employee shall be instructed on how he/ she will be able to quickly access
          shade as needed for heat illness prevention
        • If it is not safe or feasible to provide shade, document why the shade cannot be
          provided and what steps will be taken to provide shade upon request or an
          alternative cooling measure with equivalent protection.
    – Staff are reminded throughout the day to drink plenty of water and to take
      cool-down breaks in the shade (when they feel the need to do so)
    – Effective means for employees to contact the supervisor and emergency
      services
    – Regular monitoring of employees for alertness and signs/symptoms of
      heat illness
    – Close supervision of new employees
                                       Written Procedures
•   The minimal procedures are listed in the SU Heat Illness Prevention guidance.
    These steps detail how your personnel will locally:
     •   Provide supervisor and employee training
     •   Provide access to water & shade
     •   Monitor employees and report signs/symptoms of heat illness
     •   Respond to heat illnesses without delay, provide first aid and emergency services.
     •   Provide clear and precise directions to the worksite.
•   Train all supervisors and employees on these procedures.
     •   Document training
•   Maintain the procedures on-site or close to the site, so that it can be made
    available to representatives of Cal/OSHA upon request.
                            Summary of Supervisor
                                 Responsibilities
• Obtain heat illness prevention training
• Be aware of your staff’s heat stress potential
• Develop and train staff on written local heat illness prevention
  procedures
• Provide access to water and shade
• Plan and manage work activities accordingly to reduce the risk of heat
  stress
• Be able to recognize any warning signs of heat illness
    – Promptly respond to symptoms of heat illness!
           For Additional Information

•   Visit the Cal/OSHA Heat Illness websites:
    – http://www.dir.ca.gov/DOSH/HeatIllnessInfo.html
    – http://www.99calor.org/english.html
   Thanks for your attention!

Contact EH&S at 723-0448 if you
      have any questions.

     http://ehs.stanford.edu
     http://iipp.stanford.edu

				
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