Ver. EXIT. Operate all HVAC in occupied mode following minimum periods prior to resuming full occupancy: Any time staff or others are in the building. Once completed, the list will provide a … The designer needs to work closely with the local school system to work in conjunctions with new operational protocols and school operations. Domestic water systems shall be prepared for use: Systems should be flushed to remove potential contaminants from stagnant equipment, piping, fixtures, etc. Check all lavatories and sinks for correct operation and ensure soap dispensers are functional and adequate supply of soap is available to allow for proper handwashing. Refer to the section on Filtration/Disinfection under the COVID-19. If the project is a LEED or CHPS project then the filters should already be designed for MERV 13. Schools and communities must make challenging decisions to support student learning and community wellbeing. 1 . MERV ranges from 1 to 16; higher MERV = higher efficiency, MERV ≥13 (or ISO equivalent) are efficient at capturing airborne viruses. Verify water treatment target levels are being maintained. Consideration must be given to climate zone and building envelope to avoid mold growth or IAQ problems. For existing units, an increase in filtration efficiency may reduce airflow capacity. Review control sequences to verify systems are operating according to this guidance to maintain required ventilation, temperature and humidity conditions to occupied areas.Address or clear existing alarms from Building Automation Systems/Building Management Systems to allow for recognition of new alarms that may impact building indoor air quality and consider alarm hierarchy.Review control sequences to verify systems are operating according to this guidance to maintain required ventilation, temperature and humidity conditions to occupied areas. For DOAS equipment with potential for cross contamination from exhaust air stream to outdoor air stream, verify MERV-13 filtration filters any air that may be recirculated (may be in exhaust intake position for some units). Perform initial air flush of all spaces prior to occupants re-entering building: Mechanical systems should operate in occupied mode for minimum period of one week prior to students returning (may be completed at same time as teachers start returning to building) while assuring the outside air dampers are open. Establish physical barrier in waiting room for screening, Require face mask and hand sanitation from a sanitizer dispenser, Increase ventilation rate six ACH clean air, Create at least one isolation exam room in waiting area (can be temporary), Use laminate or solid surface casework to improve cleaning, Negative Pressure to 0.01 inches of water, Twelve air changes (HEPA recirculation allowed), All air exhausted to outdoors (exhaust grill above exam table), Provide minimum two isolation rooms (conduct risk assessment), Normal non-isolation nurses office can become iso-room, Include Biohazard waste storage in anteroom and iso-room for PPE, Verify space has one-pass air or maximum OA capable for lab operating requirements, Modify workstations to comply with social distancing, Install hand sanitizer dispenser in entryway, Verify all fume hoods and bio-safety cabinets are up-to-date on certification, Conduct smoke tests in all spaces to verify airflow patterns, Limit occupancy to maintain social distancing guidelines and avoid unnecessary occupants, Avoid use of locker rooms but if necessary Increase airflow in locker rooms and keep negative, Verify all locker room exhaust flows exceed ANSI/ASHRAE Standard 62.1, Consider reducing occupancy in rooms, suites and common areas, Install hand sanitizer dispenser in common areas, Verify exhaust air flow in all restrooms and laundries, Verify all outdoor air flows are well distributed (> 0.16 cfm/sf), Replace filters with MERV 13 or higher where ever possible, Refer to the Filtration and Disinfection Guidance, This guidance assumes no COVID-19 cases are housed, Limit occupancy to maintain social distancing guidelines, Replace all filters with MERV 13 or higher, Verify exhaust airflows in all toilets and locker rooms, Verify exhaust airflows from all concession stands, Provide additional outdoor air and/or HEPA filter units in rehearsal rooms and green rooms, Disable demand control ventilation control. Check the control system and devices for evidence of improper operation. Hydronic /Electric radiators / baseboard should remain operational. Check the water system ultraviolet lamp, replace bulbs as needed (if applicable). Check variable-frequency drive for proper operation. Consider installing Humidifiers in AHUs and Packaged rooftop units if feasible. 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. Operation and Scheduling Guideline for Existing AHUs during the Pandemic, Temperature and Humidity Design Criteria- Isolation Mode, Ventilation Design Criteria/Guideline- Isolation Mode, Filtration Design Criteria/ Guideline- Isolation Mode, Space Pressurization Design Criteria/ Guideline- Isolation Mode, Space Air Distribution/Diffusion Design Criteria/ Guideline- Isolation Mode, General Design Parameters- Isolation Mode. The fraction of particles removed from air passing through a filter is termed "filter efficiency" and is provided by the Minimum Efficiency Reporting Value (MERV) under standard conditions. Consider changing out motor to increase static pressure available, but this may require significant electrical modifications. Check the control system and devices for evidence of improper operation. 1: Checklist for Unoccupied Buildings, Checklist No. Your chance to help prepare K-12 Schools for Reopening. The bill? Independent industrial hygienists tested every school’s indoor air quality to ensure it meets the American Society of Heating, Refrigerating and Air-Conditioning Engineers’s (ASHRAE) COVID-19 guidelines for school buildings (Standard 55 and 62.1) The indoor air quality report looked at the following for values: There's No Good Evidence It Works. Guidance for schools can be found in CDC’s guidance for improving ventilation and increasing filtration in schools, the ASHRAE guidelines for schools and universities, and the ASHRAE guidance for the re-opening of schools. 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. Notify appropriate individuals (either parents or students) about possible contact. 11/30/2020. Guidance from the Centers for Disease Control and Prevention (CDC): Review seal installation procedures with maintenance and operations staff. include Energy Recovery Ventilation (ERV) systems (these can include energy recovery wheels, plate-type heat exchangers, heat pipes, run around loops, etc. ICTV announced “severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)” as the name of the new virus on 11 February 2020. Weekly Covid-19 Update: Boosting Med-Tech Standards, School Air Filtration. Verify filters are installed correctly. Retain in-house facility workers: clean, disinfect, maintain building systems; assess asbestos and lead paint status; pest-proof inside and out; check water and ventilation filters; assess water damage, fix leaks. Treat as PE anteroom and combination AII/PE. This guidance should be applied to each unique climate zone, unique school building and HVAC system. For instance, the large air-handling units at KIPP DC schools already use an air filtration system, rated at a level known as MERV-13, that matches what is being recommended for the novel coronavirus. Up to one week prior to occupancy if systems have been shut down to bring temperature and humidity under control prior to occupancy. Check the refrigerant system for evidence of leaks. Based on their research and expertise, ASHRAE has steadily updated guidelines for building procedures. ASHRAE® Recommendations for COVID-19 This Engineers Newsletter provides an overview of current guidance from ASHRAE for operating non-healthcare building HVAC systems during the COVID-19 pandemic. Remember the final pressure drop of any filter is an operational choice. The underlying effort of the designer should be to increase outside air to the spaces and treat return air. Verify control valves operate properly. Inspect fuel filter; clean and verify proper operation. Check P-trap. 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