21
Aug
Metabolic Expenditure & Heat Stress

Metabolic Expenditure & Heat Stress

EKG was asked to review the program and provide insight on how to best manage the program. On review, we identified two distinct issues. First, the site was treating its full-time employees as un-acclimatized workers, and second defining the work level as moderate to heavy. EKG investigated the cause of theses positions taken by the organization.

In regards to workers status as un-acclimatized, due to a verbal comment by a visiting Ministry of Labour inspector. While some research supports the position of un-acclimatized, the reality is that the stable 8hr workday/5days per week with no more than two days off (weekends) meets the American Conference of Governmental Industrial Hygienists (ACGIH) definition for an acclimatized worker.

Next EKG determined that by calculating the rate of work and therefore the metabolic expenditure (job energy), for comparison to the ACGIH and Sanders & McCormick (1987), threshold limit values (TLVs) for metabolic rate classifications. E.K.Gillin completed physiologic assessment to use as data in determining the energy expenditure of multiple jobs on the plant floor through the validated Energy Expenditure Prediction Program (EEPP) software, which utilizes Garg metabolic equations. The results of this assessment demonstrated that the work level was light for most jobs and moderate for a few.

As a result, the organization was capable of more accurately assessing the action limit for heat stress to its workers while maintaining a reasonable productivity by utilizing the acclimatized column of the heat stress indices table, and the correct work level each day.

As a result, the organization was capable of more accurately assessing the action limit for heat stress to its workers while maintaining a reasonable productivity by utilizing the acclimatized column of the heat stress indices table, and the correct work level each day. With the ability to reduce the heat breaks, improved productivity levels, provide substantial cost savings, while not negatively impacting the worker's health.