593-26-103 ICRA_Redacted.pdf

VHA Infection Control Risk Assessment for Construction, Renovation and Maintenance

VHA ICRA-1.3 (December 2024) Page 2 of 7

Interior finish or surface repairs, updates, or modifications such as repair of firewalls and barriers, and new flooring that produces minimal dust and debris. Controlled sanding activities (e.g., wet or dry sanding) that produce minimal dust and debris.

Plumbing work such as installation or replacement of a single fixture or piping for a single fixture. Any work on sanitary plumbing including snaking of drains.

Electrical work such as installation of cabling/wiring/conduit for a single device, installation of new device such as a light fixture that produces minimal dust and debris.

Air Handler and/or fan shutdown/startup and HVAC work such as replacement of a single diffuser, single terminal unit or a single device that produces minimal dust and debris.

Category C

Small-scale construction, renovation, or maintenance generally defined as follows:

Work requiring longer than a single week to complete but not exceeding 6 months.

Patients and employees are not to be in the area until activity is completed.

Demolition/removal of preexisting floor covering, casework, lay-in ceiling, or other architectural elements.

Demolition/removal of more than 32 ft2 of drywall/framing, hard ceilings, and doors/framing and minimal infrastructure such as electrical circuits and branch piping.

Installation of new walls, ceilings and doors including framing, drywall/plaster and associated work.

Plumbing work such as the installation of new sinks, showers and toilets and associated plumbing.

Shut down of sections of potable water systems.

Electrical work such as installation of conduit and wire for lighting, receptacles and switches for an area, the installation of conduit and wire for new devices such as terminal units, fans etc.

Modification of existing fire alarm and suppression systems.

Mechanical work such as the installation of ductwork, diffusers, and terminal units for an area.

Category D

Large-scale construction, renovation, or maintenance generally defined as follows:

Work exceeding 6 months in duration.

Patients and employees are not to be in the area until activity is completed.

Large-scale demolition of building components and infrastructure including removal of multiple doors, walls, framing, ceilings, flooring, piping, electrical and HVAC.

The installation building components such as new walls, ceilings and doors including framing, drywall and associated plaster work.

Plumbing work such as the installation of:

o new medical gas systems, o steam/heating hot water, condensate systems, o multiple sinks, showers and toilets including associated plumbing.

Shutdown of potable water, steam/heating hot water, condensate, and medical gas systems.

Electrical work such as installation of electrical feeders, distribution panels, conduit and wire for lighting, receptacles and switches for an area, the installation of conduit and wire for new devices such as terminal units, fans etc.

Installation of fire alarm and suppression systems.

Electrical shutdown of multiple panels.

Mechanical work such as the installation of air handling equipment, associated ductwork, diffusers, heat exchangers, terminal units and controls.

VHA ICRA-1.3 (December 2024) Page 3 of 7

Table 2 - Affected Area Assessment

Identify the areas and associated patients that will be affected by the construction/renovation/maintenance activity (see the Figure for a visual representation of adjacent affected areas).

Figure: Isometric drawing of affected area assessment

Area Service(s)/Type(s) of Area(s) (e.g., OR, Unit/Ward, Sterile

Processing, Administrative, etc.)*

Point of Contact (POC) POC Contact Information

Activity Area**

Area Above

Area Below

Adjacent Area 1

Adjacent Area 2

Adjacent Area 3

Adjacent Area 4

* There may be more than one Service/type of area for each row. List all.

** List the area(s) in which the construction/renovation/maintenance activity will occur. NOTE: When the Activity Category is B, C, or D, the control measures are determined by the Patient Risk in the adjacent affected areas.

1H122-1H125 and Surrounding Corridors

Laura Brenton 702-791-9000 ext. 15138

Roof N/A N/A

Grade N/A N/A

1H128 Simulation Control room Laura Brenton 702-791-9000 ext. 15138

1H121 Main Lobby Laura Brenton 702-791-9000 ext. 15138

1H141 Computer Training Room Laura Brenton 702-791-9000 ext. 15138

1H133 Education Offices Laura Brenton 702-791-9000 ext. 15138

VHA ICRA-1.3 (December 2024) Page 6 of 7

4. When the work involves or impacts potable water systems including stagnation due to reduced usage, the piping shall be flushed twice a week or isolated from the main system.

5. Seal doors to prevent dust migration.

6. Contain all trash and debris in the work area. Perform daily cleaning and disposal of trash (covered) from work area using an identified exit route.

7. Any equipment, tools, or materials removed from the work area must be in sealed containers and/or cleaned of dust and debris prior to removal from the area.

8. Nonporous/smooth and cleanable containers (with a hard lid) must be used to transport trash and debris from the construction areas. These containers must be damp-wiped cleaned and free of visible dust/debris before leaving the contained work area.

9. Install a sticky (dust collection) mat at entrance of contained work area based on facility policy. Sticky mats must be changed routinely and when visibly soiled.

10. Maintain clean surroundings when area is not contained by damp mopping or HEPA vacuuming surfaces at least daily.

Level III All control measures in Levels I and II and the following:

1. Ensure availability of equipment for cleaning hands.

2. Construct and complete critical barriers meeting NFPA 241 requirements. Barriers must extend to the ceiling or if ceiling tile is removed, to the deck above.

3. All (plastic or hard) barrier construction activities must be completed in a manner that prevents dust release. Plastic barriers must be effectively affixed to floor and ceiling (or floor/roof deck above) and secure from movement or damage.

4. Seal all penetrations in containment barriers, including floors and ceiling, using approved materials (UL schedule firestop if applicable for barrier type).

5. Maintain .01 inches /water gauge negative pressurization of the entire workspace by use of HEPA exhaust air systems directed outdoors, or comply with the alternative method outlined in Appendix A of this document. These control measures must be maintained continuously 24/7 for the duration of the project. HEPA filtered exhaust if discharged directly to the outdoors must be at a distance of 25 feet or greater from entrances, air intakes and operable windows. Exhausting discharged air into shared or recirculating HVAC systems, or other shared exhaust systems (e.g., bathroom exhaust) is prohibited.

6. Install a differential pressure sensing device (e.g., magnehelic, manometer, or digital monitoring) on exterior of work containment to continually monitor and document negative pressurization. The “ball in the wall” or similar apparatus are not acceptable.

Level IV All control measures in Levels I, II and III and the following:

1. Barriers must be hard barriers unless temporary to install final barrier.

2. Containment must include an anteroom to ensure pressure control. Anteroom must be large enough for equipment staging, cart cleaning, workers’ PPE and cleaning.

3. Worker clothing and/or PPE must be removed or clean and free of visible dust before leaving the work area anteroom. HEPA vacuuming of clothing or use of cover suits is acceptable.

4. Workers must wear shoe covers or have a method to clean shoes in anteroom.

Shoe covers must be removed prior to exiting the anteroom to the occupied space (non-work area). Damaged shoe covers must be changed immediately.

VHA ICRA-1.3 (December 2024) Page 7 of 7

Table 6 - Minimum Infection Prevention and Control Measures Required Upon Completion of the Activity Controls defined below shall be completed upon completion of the activity and inspected prior to terminating measures defined in Table 5.

Level of Precautions Measures

Levels I - II Cleaning:

1. Clean work areas including all environmental surfaces, high horizontal surfaces and flooring materials.

2. Check all supply and return air registers for dust accumulation on upper surfaces as well as air diffuser surfaces.

HVAC Systems:

1. Remove isolation of HVAC system in areas where work is being performed. Verify that HVAC systems are clean and operational.

2. Verify the HVAC systems meet original airflow and air exchange design specifications.

Water systems:

1. Until the potable water system is activated and in use, flushing shall continue at least twice per week in accordance with VHA Directive 1061.

Levels III - IV Construction areas must be inspected by an infection preventionist and engineering representative (and others as determined by the facility) for final activity/project close out and removal of infection prevention and control measures.

Work Area Cleaning:

1. Clean work areas including all environmental surfaces, high horizontal surfaces and flooring materials.

2. Check all supply and return air registers for dust accumulation on upper surfaces as well as air diffuser surfaces.

Removal of Critical Barriers:

1. Critical barriers must remain in place during all work involving drywall removal, creation of dust and activities beyond simple touch-up work. The barrier may NOT be removed until a work area cleaning has been performed. Additional cleaning may be needed after removal of barrier.

2. All (plastic or hard) barrier removal activities must be completed in a manner that prevents dust release. Use the following precautions when removing hard barriers:

i. Carefully remove screws and painter tape.

ii. If dust will be generated during screw removal, use hand-held HEPA vacuum.

iii. Drywall cutting is prohibited during removal process.

iv. Clean all stud tracks with HEPA vacuum before removing outer hard barrier.

v. Use a plastic barrier to enclose area if dust could be generated.

Negative Air Requirements:

1. The use of negative air must be designed to remove contaminants from the work area.

2. Negative air devices (fans, filters, monitoring and documentation equipment) must remain operational at all times and in place for a period after completion of dust creating activities to remove contaminants from the work area and before removal of critical barriers.

HVAC systems:

1. Upon removal of critical barriers, remove isolation of HVAC system in areas where work is being performed.

2. Verify that HVAC systems are clean and operational.

3. Verify and document through a TAB the HVAC systems meets original airflow and air exchange design specifications.

Water systems:

1. Until the potable water system is activated and in use, flushing shall continue at least twice per week in accordance with VHA Directive 1061.

VHA ICRA-1.3 (December 2024)

Appendix A: Alternative To Outdoor Exhaust Requirements

This Appendix provides an equivalent ICRA control measure to requirements detailed in this VHA ICRA template (Table 5 Level III, item 5) that would allow interior construction space exhaust.

Interior Construction Space Exhaust:

If the facility is not able to exhaust to the building exterior, the Healthcare Environment and Facilities program office has identified an alternate industry-recognized standard interior exhaust procedure that is accepted as providing an equivalent level of infection prevention and control (IPC), and safety. The alternate interior exhaust procedure is implemented by completing the following:

a. If exhaust is directed indoors, then the system must be HEPA filtered. Prior to start of work, including assembly of the ICRA barriers, initial baseline air sampling measurements for particulate levels must be taken in the planned area of discharge. Once containment is erected and completed, HEPA filtration must then be verified by particulate measurement, using a particle counter with multi-channel capabilities to measure down to 0.3 microns, to confirm that the discharge of the HEPA unit does not exceed the baseline particulate count of the area to which the exhaust is directed. Verification must continue at least three times per day (once every 8 hours), 7 days per week, during the use of the negative air machine and HEPA filter.

Any exceedance must trigger a work stoppage and an immediate response and resolution. All particulate measurements, including the baseline measurement, must be documented and retrievable.

b. To accommodate the sampling, the negative air pressure machine must be fitted with a 2 ft section of rigid ductwork at the discharge. The sample port for monitoring must be in the rigid ductwork section.

c. Vapor generating processes must be assessed and appropriate filtration must be installed to mitigate transmission to the facility.

d. Engineering must do a complete flow and pressure analysis and document the area to which the air is being discharged to ensure the flow and pressure relationships in that area are not being adversely impacted by the additional flow. Ideally, this is done as part of the construction package to ensure the design is implementable and no additional HVAC changes are required to accommodate the exhaust from the negative air equipment.

e. Install device on exterior of work containment to continually monitor negative pressurization. To ensure proper pressure is continuously maintained, the device(s) shall have a visual pressure indicator, data collection and alarm.

f. Exhaust must be directed to Low Risk areas as defined in Table 3 in this VHA ICRA template.

Ideally this discharge must be located so as not to impinge on high traffic areas or create a nuisance with noise or excessive airflow.

NOTE: Exhaust into shared or recirculating HVAC systems, or other shared exhaust systems (e.g., bathroom exhaust) is not acceptable.