Addressing Heat Stress with Thermal Work Limit (TWL)

 

⚠️ Trying to balance worker safety and productivity when temperatures get high? It’s not too early to be planning ahead for summer work crews.

Could you use a more comprehensive measurement for monitoring heat stress?

Inspired by requests from places like Kuwait and Quatar, where both temperatures and development are increasing, CWS is adding Thermal Work Limit (TWL) as a calculated parameter in our monitoring and display options.

It might be useful for you, too, if you supervise or dispatch workers in outdoor environments like public safety, utilities, and construction.

🌡️ TWL is a measurement of heat stress that incorporates more environmental parameters than either Heat Index or Wet Bulb Globe Temperature. It includes dry and wet bulb temperatures, black globe temperature, wind speed, relative humidity, and barometric pressure. Therefore, it takes into account the cooling effects of air movement (wind).

TWL’s advantages include:

• Improved Accuracy: Accounts for critical environmental factors affecting heat stress.
• Enhanced Productivity: Balances safety with realistic work-rest schedules, minimizing unnecessary downtime.
• Scalability: Applicable across diverse environments, from outdoor construction sites to indoor facilities.
• Ease of Implementation: Compatible with existing weather station technologies.

You can monitor TWL with any CWS weather station with the appropriate sensors which are common with most models — temperature, pressure, humidity, and wind speed — with the addition of a black globe temperature sensor.

 

📎 For additional information about Thermal Work Limits, refer to our white paper here