随着居家令解除，闲置的工作场所重新开放, everyone has a role to play in protecting themselves and others from the spread of COVID-19.
作为建筑通风和操作方面的专家, 澳门足彩app is working in partnership with clients to help as they prepare their facilities and design operations adapted to prevent the spread of the novel coronavirus.
为澳门足彩app及其客户提供指导, Chief Mechanical Engineer Matt Ford condensed this list of basic recommendations for facilities operations from publications by the Centers for Disease Control (CDC), 世界卫生组织(世卫组织)和美国供热学会, 制冷空调工程师(ASHRAE).
"These are sound things that you can do at low to no cost that will safeguard your employees,” Ford said.
Based on recommendations from ASHRAE, the following steps should be considered in the planning stage for facility re-entry.
- Increase outdoor air ventilation (use caution in highly polluted areas); with a lower population in the building, 这增加了人均有效稀释通风.
- 禁用按需控制通风(DCV).
- 充分利用节能器.
- Take care to avoid introducing unfiltered outdoor air due to dust and allergens.
- If outside air is increased, take care to make sure interior humidity does not rise above 60 percent and that the proper amount of relief air is balanced within the system.
- Improve central-air filtration to MERV-13 or the highest compatible with the filter rack, 并密封过滤器的边缘，以限制旁路.
- Keep systems running longer hours, if possible 24/7, to enhance the two actions above.
- Consider portable room air cleaners with HEPA filters for spaces that cannot increase outside air or where MERV 13 filters cannot be installed.
- Consider ultraviolet germicidal irradiation (UVGI), particularly in high-risk spaces. Research shows that UVGI in both upper-room and in-duct configurations can inactivate some disease-transmitting organisms. Either of these takes time to plan and install, and shielding is needed to protect the eyes.
- Consider current filters to be contaminated and perform a filter change for all HVAC equipment. Protect personnel changing them, and seal spent filters in plastic bags for disposal. Wearing masks and gloves per CDC and OSHA is recommended while performing this task.
"These HVAC recommendations help in reducing the airborne transmission of the virus,” Ford said. “They are steps through practical ways that owners can adjust or maintain their systems with re-entry into their facilities with workers. 这给他们的员工提供了保障和安慰，他们说, 'Here are the steps that we have taken, 我们正在尽一切努力保护员工的健康.'"
One last tip, this one from the plumbing world: It is recommended to pour at least one gallon of water down each drain to maintain traps. 干陷阱被发现是导致2003年SARS爆发的原因之一.
就像所有的危险一样，风险可以减少，但不能消除. These recommendations will evolve as the state of knowledge about the virus and its spread advances.
获取有关工业/制造设施设计的信息, including HVAC, plumbing and utility systems, contact Matt Ford at matthew.ford@stevejmole.com.
