ANSI ASSP Z9.10:2017 pdf download.Fundamentals Governing the Design and Operation of Dilution Ventilation Systems in Industrial Occupancies.
ANSI ASSP Z9.10 establishes minimum requirements for the commissioning, design, specification, construction, installation, management, operation, maintenance and testing of dilution ventilation systems (including demand dilution ventilation) used for the reduction, prevention and control of employee exposure to harmful concentrations of airborne substances in the industrial environment. ANSI ASSP Z9.10 establishes minimum DV requirements to provide safe and healthful working conditions in industrial employee occupancies.
1.2 Exclusions. ANSI ASSP Z9.10 does not cover:
• ventilation used exclusively for commercial buildings and/or comfort ventilation
• HVAC and dilution ventilation systems used in non-industrial employee occupancies
• Laboratory ventilation
• LEV systems
• displacement ventilation systems
• natural dilution ventilation systems (A)
• dilution used exclusively for fire protection (A)
• systems used exclusively for heat removal and heat stress control
1.3 Conflicts with Other Standards and Codes. Where standard provisions may be in conflict with building codes or other
recognized standards, the more stringent should be applied.
2. REFERENCED STANDARDS AND GUIDELINES
Existing standards, guidelines and other sources of information contain provisions that complement the recommendations of this ANSI standard. Please see Appendix A2 for a list of such documents.
3. DEFINITIONS
Definitions explain terms as tney are used in ANSI ASSP Z9.10.
3.1 Acceptable Concentration. The concentration in air of a gas, vapor or aerosol that the user determines is acceptable for the employee-occupied space. User-defined acceptable concentrations might include, for example, 5% of the OSHA PEL, 10% of the ACGIH TLV®, and so forth
3.2 Air Cleaning Equipment. A device or combination of devices for separating contaminants from the air handled by a dilution ventilation system. Particle filters are most common, but filtration may also include chemical and activated charcoal beds for removing gases and vapors.
3.3 Air Handling Unit, AHU, Air Handling Equipment. The equipment used to collect, clean, temper and control dilution air. Could include fan, motor, intakes, connecting ductwork, dampers and any equipment used to clean and/or temper the air.
3.4 AMCA. The Air Moving and Control Association. AMCA establishes certification criteria for fans, air intake louvers and other air moving equipment.ANSI ASSP Z9.10 pdf download.