ANSI/ASHRAE 62.1-2022: Ventilation for Acceptable Indoor Air Quality
ANSI/ASHRAE Standard 62.1-2022: Ventilation for Acceptable Indoor Air Quality defines minimum requirements for mechanical and natural ventilation systems in commercial, institutional, and industrial buildings. Widely referenced by model codes such as the International Building Code, this standard is critical for achieving acceptable indoor air quality (IAQ) in non-residential environments.
Highlights:
- Defines procedures for assessing outdoor air quality and ventilation by occupancy type
- Revised Section 5 reorganizes systems/equipment content by airflow path
- Updates IAQ Procedure with design compound guidance and mass-balance modeling
- Establishes separation distances for exhaust air and dew point limits for cooled spaces
- Classifies ventilation zones and defines airflow effectiveness and breathing zone metrics
- Covers design, installation, commissioning, and maintenance of ventilation systems
- Includes appendices for healthcare settings, air quality evaluation, compliance paths, and simplified rate calculations
- Incorporates addenda through Appendix Q as part of its continuous maintenance model
Who It’s For:
Designed for mechanical engineers, HVAC professionals, code officials, and facility managers responsible for designing and maintaining compliant ventilation systems that promote occupant health and comfort.
ASHRAE 62.1-2022
ANSI/ASHRAE 62.1-2022: Ventilation for Acceptable Indoor Air Quality
ANSI/ASHRAE Standard 62.1-2022: Ventilation for Acceptable Indoor Air Quality defines minimum requirements for mechanical and natural ventilation systems in commercial, institutional, and industrial buildings. Widely referenced by model codes such as the International Building Code, this standard is critical for achieving acceptable indoor air quality (IAQ) in non-residential environments.
Highlights:
- Defines procedures for assessing outdoor air quality and ventilation by occupancy type
- Revised Section 5 reorganizes systems/equipment content by airflow path
- Updates IAQ Procedure with design compound guidance and mass-balance modeling
- Establishes separation distances for exhaust air and dew point limits for cooled spaces
- Classifies ventilation zones and defines airflow effectiveness and breathing zone metrics
- Covers design, installation, commissioning, and maintenance of ventilation systems
- Includes appendices for healthcare settings, air quality evaluation, compliance paths, and simplified rate calculations
- Incorporates addenda through Appendix Q as part of its continuous maintenance model
Who It’s For:
Designed for mechanical engineers, HVAC professionals, code officials, and facility managers responsible for designing and maintaining compliant ventilation systems that promote occupant health and comfort.
ASHRAE 62.1-2022
API 650: Welded Tanks for Oil Storage, 13th Edition (2020)
API 650: Welded Tanks for Oil Storage, 13th Edition (2020) sets the standard for the design, construction, and inspection of vertical, cylindrical, aboveground welded storage tanks operating near atmospheric pressure. Intended for non-refrigerated service up to 93°C (200°F), this specification is essential for tanks used in the storage of petroleum, chemicals, and other liquid products.
Highlights:
- Covers open-top and closed-top tank design for a wide range of capacities
- Allows construction using carbon steel, stainless steel, and duplex steel materials
- Specifies requirements for shell, bottom, roof, nozzle components, and structural supports
- Provides detailed material selection guidance and limits for plates, flanges, and welding consumables
- Defines procedures for welding, welder qualification, and weld inspection
- Includes standards for erection, hydrostatic testing, tolerances, and repair methods
- Annexes address specialized applications:
- Seismic design (Annex E)
- Floating roofs (Annexes C and H)
- Aluminum and stainless steel tanks (Annexes AL and S)
- Elevated temperature service (Annex M)
- Leak detection, under-bottom connections (Annexes I and O)
- API Monogram licensing (Annex Y)
Who It’s For:
A critical reference for storage tank engineers, fabricators, inspectors, and facility operators involved in tank design, procurement, fabrication, and field erection in the oil, gas, chemical, and industrial sectors.
API 650-2020
API 650: Welded Tanks for Oil Storage, 13th Edition (2020)
API 650: Welded Tanks for Oil Storage, 13th Edition (2020) sets the standard for the design, construction, and inspection of vertical, cylindrical, aboveground welded storage tanks operating near atmospheric pressure. Intended for non-refrigerated service up to 93°C (200°F), this specification is essential for tanks used in the storage of petroleum, chemicals, and other liquid products.
Highlights:
- Covers open-top and closed-top tank design for a wide range of capacities
- Allows construction using carbon steel, stainless steel, and duplex steel materials
- Specifies requirements for shell, bottom, roof, nozzle components, and structural supports
- Provides detailed material selection guidance and limits for plates, flanges, and welding consumables
- Defines procedures for welding, welder qualification, and weld inspection
- Includes standards for erection, hydrostatic testing, tolerances, and repair methods
- Annexes address specialized applications:
- Seismic design (Annex E)
- Floating roofs (Annexes C and H)
- Aluminum and stainless steel tanks (Annexes AL and S)
- Elevated temperature service (Annex M)
- Leak detection, under-bottom connections (Annexes I and O)
- API Monogram licensing (Annex Y)
Who It’s For:
A critical reference for storage tank engineers, fabricators, inspectors, and facility operators involved in tank design, procurement, fabrication, and field erection in the oil, gas, chemical, and industrial sectors.
API 650-2020