ICRA Explained: Why Your Healthcare Contractor Needs It

Construction Dust is a Biological Hazard

In a standard office build, dust is a nuisance. You sweep it up, and life goes on. In a hospital, that same dust can be lethal.

Research shows that construction activities are a major source of airborne contaminants in hospitals. The primary enemy is Aspergillus, a common mold found in ceiling tiles, drywall, and insulation. To a healthy contractor, it's harmless. To an immunocompromised patient (oncology, transplant, ICU), inhaling these spores can lead to Invasive Aspergillosis, a severe and often fatal infection.

This is why ICRA (Infection Control Risk Assessment) exists. It is not just about cleanliness; it is about biological containment.

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The ICRA Matrix: Determining Risk

Every healthcare project starts with the ICRA Matrix, which combines two factors:

1. Type of Construction Project (Type A, B, C, D): ranging from inspecting a wire (Type A) to major demolition (Type D).
2. Patient Risk Group (Low, Medium, High, Highest): ranging from office areas (Low) to Burn Units and ORs (Highest).

Combining these gives us the Class of Precautions (I, II, III, or IV).

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The 4 Classes of Precautions

As a facility manager, you need to know what you should see when you walk past our job site.

Class I (Minor Work)

• Example: Replacing a ceiling tile in a hallway.
• Protocol: Replace the tile immediately. Minimize dust.

Class II (Small Scale, Short Duration)

• Example: Cutting drywall for a new outlet.
• Protocol: Use active means to prevent dust dispersion. Mist surfaces. Seal doors with tape. Block off air vents. Use a HEPA vacuum.

Class III (Moderate to High Levels of Dust)

• Example: Demolishing a wall, sanding drywall.
• Protocol: Negative Air Pressure is required. We must isolate the HVAC system to prevent dust from travelling through the ducts. Barricades must be sealed airtight.

Class IV (Major Demolition / Highest Risk)

• Example: Heavy construction in an ICU or OR suite.
• Protocol: Total isolation.
  • Anteroom: A separate "airlock" chamber for workers to change clothes.
  • Walk-off Mats: Sticky mats to grab dust from shoes.
  • Shoe Covers/PPE: Mandatory for all entrants.
  • Dedicated Exhaust: Air must be exhausted directly outside, not recirculated.

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The Lomax Standard: Beyond the Clipboard

Many contractors view ICRA as a hoop to jump through. We view it as a moral obligation. Our superintendents are ASHE-certified and treat the containment barrier as effective as a submarine hull.

Verification Technology

We don't guess if the room is negative; we prove it.

• Digital Manometers: We install continuous pressure monitors with alarms. If pressure drops (signaling a breach), work stops immediately.
• Particle Counters: We can spot-check air quality inside and outside the barrier to verify containment.
• HEPA Scrubbers: We use industrial-grade air scrubbers that capture 99.97% of particles down to 0.3 microns.