Executive Summary

This report presents the findings of electromagnetic interference (EMI) measurements conducted at Arizona Public Service Company (APS) Palo Verde Nuclear Generating Station in 2013 as they relate to employees with implanted medical devices. The purpose of this assessment was to evaluate potential risks specifically associated with the proper functioning of devices such as cardiac defibrillators, pacemakers, and electronic insulin pumps. The electromagnetic field testing was done with the assistance of the Plant Safety Manager.

To initiate this process, APS requested a site-wide survey for electromagnetic field interference (EMI). Subsequently, the electromagnetic field testing was conducted with the assistance of the Plant Safety Manager.

As illustrated in the diagram at the end of this document, “Diagram of All Areas Tested for EMI as Measured on March 15, 2013,” several areas exceeded established heart device guidelines.

Therefore, and most importantly, we recommend the following actions to enhance safety for employees with implanted medical devices:

  • Restrict Access: Limit access to high-EMI areas for employees with implanted medical devices. Furthermore, implement clear signage and guidelines to ensure these employees are aware of the potential risks.
  • Shielding Measures: Install electromagnetic shielding in critical areas to reduce EMI levels. Apply shielding to walls, floors, and ceilings in high-EMI zones to contain and block electromagnetic fields.
  • Regular Monitoring: Additionally, Conduct regular EMI monitoring to track changes in electromagnetic field levels over time. Periodic assessments will help ensure that EMI levels remain within safe limits. And that your team promptly identifies and addresses new sources of interference.
  • Employee Training: Similarly, provide training for all employees on the potential risks associated with EMI and the proper use of personal protective equipment. The primary goal is to ensure that management fully informs employees with implanted medical devices about the areas to avoid and the protective measures in place.
  • Emergency Protocols: Develop and implement emergency protocols specifically for incidents involving EMI interference with implanted medical devices. These protocols should include immediate response actions and medical support procedures.
Powerlines at APS Palo Verde Nuclear Station

Powerlines at APS Palo Verde Nuclear Station

Notably, Cars Parked under Power Lines