EMI Threat Risk Assessment

FMS was engaged by the management of this landmark building in Manhattan to evaluate EMF conditions in an area of the Second Floor located immediately above the building’s main electrical switchgear. Shielding consisting of thick steel plates had been installed decades earlier on the floor slab of the Second Floor in an attempt to lower AC magnetic field levels in the area. However, prospective tenants for the Second Floor area consistently determined that the space was not desirable for office use, due to elevated EMF levels remaining in the space despite installation of the steel shielding. An EMF assessment by FMS confirmed elevated levels of AC magnetic fields throughout the subject area. FMS developed a cost effective plan to remove the inefficient thick steel plates and replace with a efficient shielding scheme utilizing highly permeable and conductive shielding materials designed to lower fields to acceptably lower values.

Replacement of the existing shielding by FMS was successfully completed in early 2009 on schedule and budget with minimal disruption to building operations.