Índice de tensión en el trabajo (JSI)

Job Strain Index

Índice de tensión en el trabajo (JSI)

Objetivo:

Método para evaluar el riesgo de trastornos musculoesqueléticos de la mano, la muñeca, el antebrazo y el codo, asociados principalmente a esfuerzos repetitivos y enérgicos.

Cómo se utiliza:

Ventajas

Contras

Categorías:

Ideal para:

The Job Strain Index (JSI) is particularly beneficial in various sectors that involve manual labor, such as manufacturing, construction, healthcare, and warehousing, where workers are susceptible to musculoskeletal disorders. This methodology is most effectively applied during the ergonomics assessment phase of workplace design or during the evaluation of existing job tasks to identify risks associated with specific work activities. It is typically initiated by occupational health and safety professionals, ergonomists, or human factors specialists, often in collaboration with workers, supervisors, and management to ensure a comprehensive understanding of job demands and work environments. The process includes observational studies and data collection on workers’ tasks, thereby engaging different stakeholders in the evaluation process, including engineers looking to improve workstation designs and occupational therapists assessing the impact of job requirements on individual health. The JSI score serves as a quantifiable measure that can drive interventions, such as redesigning tasks to minimize risk factors, implementing job rotation strategies, or offering training to modify manual handling techniques. Its user-friendly nature allows for quick on-site evaluations, making it a practical tool during safety audits or in the development of workplace initiatives that aim to enhance worker well-being while maintaining productivity standards. By providing a clear numerical risk assessment, JSI aids in prioritizing actions needed for improvement, offering a straightforward approach to risk management in operational settings.

Pasos clave de esta metodología

  1. Determine the intensity of exertion for each task using a standardized scale.
  2. Evaluate the duration of exertion per cycle for each identified task.
  3. Count the number of efforts applied per minute for relevant tasks.
  4. Assess hand/wrist posture during each task using defined criteria.
  5. Measure the speed of work for each task as part of the analysis.
  6. Estimate the duration of the task performed each day.
  7. Calculate the Job Strain Index score by combining all the assessed parameters.
  8. Compare the calculated score against established threshold values to determine risk level.

Consejos profesionales

  • Integrate task observations with JSI calculations to capture real-world variations in exertion levels and to inform design adjustments.
  • Utilize the JSI data as a baseline for iterative design changes and re-evaluate periodically to track the effectiveness of ergonomic interventions.
  • Collaborate with multidisciplinary teams to assess context-specific variables such as environment and workflow, enhancing the accuracy of the JSI application.

Leer y comparar varias metodologías, recomendamos el

> Amplio repositorio de metodologías  <
junto con otras más de 400 metodologías.

Sus comentarios sobre esta metodología o información adicional son bienvenidos en la dirección sección de comentarios ↓ , así como cualquier idea o enlace relacionado con la ingeniería.

Deja una respuesta

Tu dirección de correo electrónico no será publicada. Los campos obligatorios están marcados con *

Publicaciones relacionadas

Scroll al inicio