CSA Z317.11-02 (R2013): Infection Control During Construction, Renovation, and Maintenance in Health Care Facilities

Scope and Application

CSA Z317.11-02 (R2013), titled Infection Control During Construction, Renovation, and Maintenance of Health Care Facilities, provides a standardized framework for managing infection risks inherent in healthcare facility projects. This standard applies to all construction, renovation, demolition, and maintenance activities within hospitals, clinics, long-term care homes, and other health care settings. It addresses the full project lifecycle—from planning and design through execution and commissioning—to minimize the transmission of airborne pathogens, dust, moisture, and other contaminants that can compromise patient safety and indoor environmental quality.

Originally published in 2002 and reaffirmed in 2013, the standard is intended for infection prevention and control (IPC) professionals, facility managers, architects, engineers, contractors, and health care administrators. It aligns with other CSA infection control standards and complements provincial building codes and occupational health regulations.

Technical Requirements and Risk Classification

At the heart of CSA Z317.11-02 (R2013) is a risk-based classification system that categorizes project types according to the potential for infection transmission. The standard defines three levels of risk:

Low-risk activities: Tasks that disturb minimal amounts of material without generating significant aerosolized contaminants (e.g., painting, minor electrical work).
Medium-risk activities: Work that generates moderate dust or aerosols (e.g., ceiling tile removal, drywall sanding).
High-risk activities: Operations that involve demolition, major system disruptions, or work in or near high-acuity areas (e.g., surgeries, immunocompromised patient zones).

For each risk level, the standard specifies minimum engineering controls, work practices, and monitoring requirements. A key element is the mandatory minimum airborne particle concentration limits and pressure differentials for containment zones.

Table 1 – Required Environmental Controls by Risk Level (Based on CSA Z317.11-02)
Risk Level	Minimum Pressure Differential (Pa)	Air Changes per Hour (ACH)	Filtration Efficiency (MERV)	Permissible Particle Count (≥0.5 µm/m³)
Low	0 (isolation not required)	≥ 2 (general ventilation)	MERV 8 (supply)	No limit specified
Medium	2.5 (negative to adjacent areas)	≥ 6	MERV 13 (supply)	< 352,000
High	5.0 (negative to adjacent areas)	≥ 12	MERV 16 (supply)	< 35,200

All containment barriers must be airtight and visual inspections must be supported by smoke-trace or pressure-monitoring verification before work begins. The standard also mandates the use of anterooms for high-risk activities, with interlocking doors and handwashing stations where feasible.

Important: The numerical values in Table 1 are derived from the CSA standard. Actual project requirements should be confirmed by a qualified IPC professional and may be more stringent based on local health authority policies.

Implementation Highlights

Pre-Construction Risk Assessment (PCRA)

Before any project starts, a PCRA must be conducted by a multidisciplinary team including IPC, facilities, and project management. The assessment determines the appropriate risk classification, identifies vulnerable patient populations, and establishes infection control (IC) measures. The PCRA is documented and updated as the project progresses.

Infection Control Barrier Construction

The standard provides detailed specifications for barrier types:

Class I barriers – Temporary walls made of fire-rated materials with taped joints for low‑risk areas.
Class II barriers – Enhanced airtight barriers with sealed penetrations for medium‑risk areas.
Class III barriers – Rigid, fully sealed enclosures with independent negative‑pressure systems for high‑risk areas.

Monitoring and Commissioning

Continuous monitoring of pressure differentials and airborne particle counts is required for all high‑ and medium‑risk projects. The standard specifies measurement points, calibration intervals, and alarm thresholds. Initial commissioning must include third‑party verification of containment integrity.

Tip: Use real‑time particle counters and pressure monitors with data logging to simplify compliance documentation and provide early warning of containment breaches during construction.

Compliance and Certification

Compliance with CSA Z317.11-02 (R2013) is mandatory for accredited health care facilities in Canada under the CSA Z8000 series and provincial regulations. During a construction project, the facility’s infection control team must:

Maintain a compliance log documenting PCRA updates, barrier inspections, and monitoring results.
Perform daily walkthroughs and sign off on containment readiness before high‑risk work begins.
Undertake final barrier removal only after verifying that no residual contamination exists.

Best Practice: Schedule an independent audit at project completion to confirm that all infection control measures were implemented according to the standard. This not only supports accreditation but also provides a defensible record of due diligence.

Common Pitfalls and Consequences

Failure to adhere to CSA Z317.11-02 (R2013) can result in airborne outbreaks, extended patient stays, increased liability, and loss of accreditation. Frequent non‑compliance issues include:

Inadequate barrier sealing around windows and penetrations.
Lack of real‑time pressure monitoring for high‑risk zones.
Haphazard waste disposal from construction areas.

Caution: Never bypass negative‑pressure alarms or modify barrier design without re‑evaluating the risk classification. Even a short‑term breach can expose immunocompromised patients to harmful airborne fungi (e.g., Aspergillus).

The standard also recommends that all personnel working in containment areas receive training on infection control principles, barrier protocols, and emergency procedures. Annual refresher training is advised.

FAQs

Q: Is CSA Z317.11-02 (R2013) still current?
A: The standard was reaffirmed in 2013 and remains a key reference for infection control during healthcare construction. However, users should check with the CSA Group for updates or newer editions (e.g., CSA Z317.11-2021). The principles and risk-based approach continue to form the foundation for most Canadian healthcare IPC requirements.

Q: Who is responsible for ensuring compliance with the standard?
A: Ultimately, the health care facility’s administration holds accountability. In practice, the Infection Prevention and Control (IPC) team, facilities management, and the construction project manager share the day‑to‑day duties of implementing and documenting controls. Contractors must also be contractually bound to follow the standard.

Q: Does the standard apply to all sizes of health care facilities?
A: Yes. While the scale of controls may differ, the risk classification and containment principles are applicable to any facility where patient care is provided – from large academic hospitals to small outpatient clinics. The standard includes guidance on tailoring controls to the size and complexity of the project.

Q: What are the penalties for non‑compliance?
A: Besides potential patient harm and legal liability, non‑compliance can lead to loss of accreditation (e.g., from Accreditation Canada), fines by provincial health authorities, and voiding of insurance coverage. The standard itself is not a law, but it is often incorporated into contracts and regulatory documents, making adherence obligatory.

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