Check chemical injector device for proper operation. See ASHRAE and CDC for more information on air cleaning and filtration and other important engineering controls. These are not intended and should not be relied upon as official statements of ASHRAE. Return to Indoor Air and Coronavirus (COVID-19). Collect Original Design Drawings if available. Generally, particles with an aerodynamic diameter around 0.3 μm are most penetrating; efficiency increases above and below this particle size. May 28, 2020. Develop policies for use of drinking fountains/water coolers. Check the water system ultraviolet lamp, replace bulbs as needed (if applicable). 24 hours if systems have operated during closure period. - may be done with central Building Automation System (BAS) if available - mobile/handheld devices may be used if central monitoring not available. WHO Advice on the use of masks in the context of COVID-19. Check unit ventilators for proper amounts of OA and operation. Consider completing preventative and deferred maintenance projects not directly related to pandemic, but potentially improving facility IEQ. Human disease preparedness and response is WHO’s role, so diseases are officially named by WHO in the International Classification of Diseases (ICD). Consider installing Humidifiers in AHUs and Packaged rooftop units if feasible. Consideration must be given to climate zone and building envelope to avoid mold growth or IAQ problems. Check ultraviolet lamp, replace bulbs as needed (if applicable). Environmental Health Emerging Issue Brief Pandemic COVID-19 and Airborne Transmission. ASHRAE Offers COVID-19 Building Readiness/Reopening Guidance. Chilled Water, Hot Water and Condenser Water Systems: Monthly. Document any unusual observations other than those that can be recorded by control systems. document focused on operational considerations, Filtration/Disinfection under the COVID-19, ASHRAE Filtration and Disinfection system, nurse's office in a room described in this guidance, Student Health Facility in a room described in this guidance. The replacement of the filters is part of a multi‐pronged approach to help manage the potential risk of COVID‐19 in spaces across MSU where people may … During the Pandemic, increase Filtration to that recommended in the Filtration Upgrade section below. Background for recommendations associated with masks or face coverings and recommendations for use under different circumstances. If necessary, vent air from system high points and Verify backflow preventers and pressure regulating valves on makeup water lines are functioning properly. Please support ASHRAE’s continuing work to combat the transmission of COVID-19 Donate Now. Review existing Indoor Air Quality issues, if any, records of documents and investigate current status of complaint and address any deficiencies identified, if possible. Verify filters are installed correctly. For HVAC systems suspected to be contaminated with SARS-CoV-2, it is not necessary to suspend HVAC system maintenance, including filter changes but additional safety precautions are warranted, The risks associated with handling filters contaminated with coronaviruses in ventilation systems under field-use conditions have not been evaluated, Workers performing maintenance and/or replacing filters on any ventilation system with the potential for viral contamination should wear appropriate personal protective equipment (PPE), When feasible, filters can be disinfected with a 10% bleach solution or another appropriate disinfectant, approved for use against SARS-CoV-2, before removal. ASHRAE: Reopening of Schools and Universities. For "Isolation mode" design Dedicated HVAC system. Guidance from cognizant authorities should be followed to the extent possible. Confirm AHU is bringing in outdoor air and removing exhaust air as intended. Review airflow patterns in occupied spaces to ensure airflow is not impeded. Select guidance that is likely applicable for educational facilities includes: These recommendations and strategies are organized in order from simple first steps, more involved next steps and then more long-term improvements. The designer needs to work closely with the local school system to work in conjunctions with new operational protocols and school operations. ... Organization This resource provides considerations for decision-makers and educators on how or when to reopen or close schools in the context of COVID-19. Review outdoor airflow rates compared to the most current version of ASHRAE Standard 62.1 or current state-adopted code requirements. Review the original design and equipment shop drawings to determine available External Static Pressure for equipment. Diseases are named to enable discussion on disease prevention, spread, transmissibility, severity and treatment. For example, HIV is the virus that causes AIDS. During the summer period before occupancy perform Checklist No. All retrofits and modifications must not contradict ASHRAE 62.1 guidelines and must continue to meet or exceed the standards and codes adopted by local jurisdictions. Check P-trap. Work with a reputable ventilation engineer or UV system designer. If MERV 13 Filters cannot be installed consider the following: HVAC System Maintenance and Filter Replacement during the COVID-19 Pandemic: Screen patients entering clinic in waiting area, See layout suggestion here, can be modified as needed, Before Student Occupation during Pandemic. School Operations: Get Ready | Information on SARS-CoV-2: General Information on SARS-CoV-2 | Why Do Viruses and Diseases Have Different Names? Guidance from the Centers for Disease Control and Prevention (CDC): Adjust the Variable Frequency Drives to address increase in static pressure for filters. Shaping Tomorrow's Built Environment Today, Officers, Directors, Councils, Committees, Staff, Science and Technology for the Built Environment, Instructor-Led Training Seminar and Short Courses, Self-Directed Learning / Group Learning Texts, 2021 Virtual Design and Construction Conference, 2021 ASHRAE Building Performance Analysis Conference, IAQ 2020: Indoor Environmental Quality Performance Approaches, Criteria for Annual Conference City Selection, Winter, Annual, & Virtual Conference Sponsorship Opportunities, Determining Building Readiness and Operations for Existing Facilities to Reoccupy After Shut-Down due to Pandemic, Checklist No. Check the refrigerant system for evidence of leaks. Increase the filtration in the unit to the maximum available, Provide a recirculation fan filtration unit and duct into the return of units, Provide a HEPA filtration unit which re-circulates air within the space, Consider additional treatment technology to kill/disable airborne infectious aerosols (refer to, Consider alternate filter locations in return duct or grille but consider static pressure drop implications and relationship with outside air dampers, Install a pressure gauge on units to assist in determining filter change frequency, Document motor amperages before and after filter changes, alarm points in BAS may need to be updated, Filter change frequency may increase due to seasonal and atmospheric considerations at different sites (such as Pollen Season), There will be an increase in fan energy used to overcome additional pressure drop from filters, With an increase pressure drop for filtration there will be less airflow to heat and cool the spaces during peak design days. Select filtration levels (MERV ratings) that are maximized for equipment capabilities, use MERV 13 if equipment allows, while assuring the pressure drop is less than the fans capability. Determine the area of filter banks. Maintain proper indoor air conditions (temperature and humidity) to maintain occupant comfort (refer to ASHRAE Standard 55), and to limit potential for mold growth in building structure and finishesReview potential for maintaining space relative humidity between 40% and 60%, which may reduce potential for airborne viral transmissionHumidification during heating season in cold climates creates significant potential for condensation in/on building envelope components – addition of, or modification to, humidification in these areas should be reviewed by competent professionals before changes are incorporated Trend and monitor temperature and humidity levels in each space to the extent possible and within the capability of BAS, portable data loggers and handheld instruments. Provide PPE and remove suspect individual – relocate to nursing or isolation space. ALL DISTRICT PERSONNEL RESPONSIBLE FOR THE OPERATION AND MAINTENCE OF HVAC SYSTEMS IN SCHOOL BUILDINGS SHOULD READ AND With the onset of COVID-19, the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) set out to determine the role of building maintenance in the fight against this respiratory virus. This guidance has been formulated to help designers retrofit and plan for the improvement of indoor air quality and to slow the transmission of viruses via the HVAC systems. When maintenance tasks are completed, maintenance personnel should immediately wash their hands with soap and water or use an alcohol-based hand sanitizer. School Health and Safety Frequently Asked Questions: Coronavirus (COVID-19) Recovery Period (Updated Dec. 14, 2020) The Office of the State Superintendent of Education (OSSE) issued updated guidance on Dec. 14, 2020 for District of Columbia public elementary and secondary schools, including public charter schools, Professionals who operate school, office, and commercial buildings should consult guidance by ASHRAE (formerly known as American Society of Heating, Refrigerating and Air-Conditioning Engineers), and other professional and government organizations for information on ventilation and air filtration to help reduce risks from the virus that causes COVID-19. and Air-Conditioning Engineers (ASHRAE) Guidance for Building Operations During the COVID-19 Pandemic, and ASHRAE guidelines for schools and universities, which includes further information on ventilation recommendations for different types of buildings. Protecting the health, safety and welfare of the world’s students from the spread of SARS-Cov-2 (the virus that causes COVID-19 disease) is essential to protecting the health, safety and welfare of the entire population. Any spaces not previously cleaned should have all accessible surfaces properly cleaned. | COVID-19 | Where Did SARS-CoV-2 Come From? Nurse office suite design should follow health care facilities design practices as described in standards such as ASHRAE Standard 170  and other applicable guidelines and design information. Verify control dampers operate properly. Conditioning Engineers (ASHRAE), may also improve resistance to infection.1 The American Society for Microbiology (ASM) has recently addressed the issue of COVID-19 transmission in the “built environment” (BE), defined as the buildings, automobiles and other indoor settings in … How can schools improve ventilation within buildings to help prevent COVID-19 spread? This guidance should be applied to each unique climate zone, unique school building and HVAC system. Inspect pumps and associated electrical components for proper operation. COVID-19 (May 2020), and the ASHRAE Guidance for Re-Opening Buildings. Check coil fins and check for damage. Considerations for schools. Disable Demand-Controlled Ventilation (DCV) systems using Carbon Dioxide (CO2) sensors where feasible: Either disable control sequence or adjust setpoints to be at or near ambient outdoor CO2 levels (typically between 400 and 500 ppm). Treat as PE anteroom and combination AII/PE. This reference provides cleaning guidance for multiple building types and should be applicable to most K-12 and higher education spaces. This guidance is primarily focused on HVAC systems within school and higher education facilities – many organizations are likely to have challenges outside of these facilities as well – transportation systems (primarily buses) may be an area of specific concern. 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