30 YEARS of Environmental & Industrial Health Services

MRI Room Mold

Complex Medical Center Remediation

Remediation of the MRI Room

Orange Imaging Center at 230 S. Main St. Orange CA.


MRI Magnetic Resonance Imaging machine in a medical centerMedical Center Fungus in MRI RoomMold was under the floorThe remediation of a Magnetic Resonance Imaging (MRI) room within a medical clinic was one of the most unique projects that Skalsky & Associates completed.  In this particular case (Radnet Management Inc. v. David W. Clayton, et al.  LA Sup.Crt BC-334531), a plumbing leak had resulted in the episodic flooding the floor in the MRI examination room. 


The MRI room was completely (ceiling, wall, and floors) shielded with copper sheathing.  Once the water from the plumbing leak penetrated the copper sheathing and entered the plywood subflooring, it could no longer escape by evaporation and provided ample moisture for mold growth.  The flooring of the MRI room consisted of floor tile (12x12) and mastic on top of the copper sheathing and a plywood subfloor covering the concrete slab.  No asbestos was dectcted in samples of the floor tile or the mastic. 


The most prevalent fungi detected (in decreasing order) were  Aspergillus versicolor, Eurotium herbariorum, Acremonium fusidiodes, Acremonium strictum, and  Scopulariopsis brumptii.  These fungi can produce mycotoxins and be causative agents in Organic Dust Toxic Syndrome or Hypersensitivity Pneumonitis. 


Mold in the flooringThe flooring of the MRI Room was not only colonized by fungi but also by Gram Negative Bacilli and mites. The outer membrane of gram negative bacteria contains a family of toxic lipopolysaccharide molecules that are collectively referred to as endotoxin.  Endotoxin is encountered in the environment as part of the whole bacterial cell or as membrane fragments of those cells.  Endotoxin and the allergens produced by mites are potent, biologically active agents that are particularly problematic for asthmatics



Medical Office - Temporary Entrance - MRI Room


Temporary entrance for Medical Imaging Center duiring clean up.Medical Office Remediation while maintaining business hoursMedical Offices at 230





Future containment entrance into MRI room window.


Medical Offices stay open during Remediation of the MRI Room


In order to avoid disturbing other medical businesses located in the 230 South Main office building and to maintain the flow of patients into the Radnet Medical Imaging center, a separate entrance for the remediation of the MRI room was constructed on the exterior of the building.

Temporary Walls Containment Walls - Temporary
In addition, temporary containment walls were constructed on the interior of the imaging center to allow patient reception, patient waiting, bookkeeping, and radiology to continue to function throughout the remediation of the MRI room.

Medical Center Parking Lot
Patients were received and processed normally with the exception that imaging occurred via a portable MRI machine located in the parking lot. Radiologists were able to maintain their offices and interpret MRI images throughout the remediation.


No white suited workers were visible to the public – either from the street or from the building's offices.


Liquid Helium Creates Some Complications

Medical Bulilding RemediationSCBA Outside ContainmentHosesand ConectionsOxygen Meter


At the time of remediation, liquid helium was still present in the MRI machine and the compressor sustaining the liquid helium was still running. The presence of 1700 liters of liquid helium in an enclosed space system and the potential for accidental release was a significant cause of concern. The hoses and connections running from the MRI to the compressor in the mechanical room were secured so that they could not be inadvertently punctured.


During remediation an oxygen meter with alarm set at 19.5% was present and running at all times. Emergency Exits were planned so that the containment could easily be breached if a release of helium occurred. A Self-Contained Breathing Apparatus was maintained outside of containment for potential rescue use.

Cleaning MoldMold Slores in FlooringRemediation of Floor AreaRemediation of Floor Areas in MRI Room


During remediation, numbered grids were established so that materials could be removed, investigated and then bagged/stored sequentially. Labels were attached to each bag so that the materials removed could be maintained as evidence until the litigation was settled. The containment was cleared as specified by viable (DG18,MEA) and non-vialble (AOC) air testing, by non-viable surface testing (tape) for fungi and by dust sampling for Endotoxin and mite allergens.


MRI Imaging DeviceImaging Machine

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