Portable Ultraviolet-C Chambers for Inactivation of SARS-CoV-2 | Zendy

Shelby Claytor | Zendy; R. G. Campbell | Zendy; Ashton Hattori | Zendy; E K Brown | Zendy; Chris Hollis | Zendy; Max Schureck | Zendy; Howard Atchley | Zendy; John H. Stone | Zendy; Michael Grady | Zendy; Benjamin B. Yang | Zendy; T. Robert Harris | Zendy

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Portable Ultraviolet-C Chambers for Inactivation of SARS-CoV-2

Author(s) -

Shelby Claytor,

R. G. Campbell,

Ashton Hattori,

E K Brown,

Chris Hollis,

Max Schureck,

Howard Atchley,

John H. Stone,

Michael Grady,

Benjamin B. Yang,

T. Robert Harris

Publication year - 2022

Publication title -

journal of research of the national institute of standards and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.202

H-Index - 59

eISSN - 2165-7254

pISSN - 1044-677X

DOI - 10.6028/jres.126.056

Subject(s) - ultraviolet , covid-19 , ultraviolet a , virology , materials science , physics , environmental science , medicine , optoelectronics , dermatology , disease , pathology , infectious disease (medical specialty) , outbreak

The goal of this project was to create and optimize the performance of portablechambers for reliable ultraviolet (UV) disinfection of personal protective equipment(PPE) and enable its safe reuse. During unforeseen times of high demand for PPE, such asduring the coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acuterespiratory syndrome coronavirus 2 (SARS-CoV-2), single-use PPE supply can be quicklydepleted. UV radiation has been shown to disinfect materials with high efficacy. Thispaper reports the design and construction of two 280 nm ultraviolet-C (UV-C)disinfection chambers in the form of portable chambers with 46 cm × 46 cm × 46 cminterior dimensions, one using light-emitting diodes and the other using mercury vaporlamps. This paper summarizes and presents a review of SARS-CoV-2 UV deactivationresearch during 2020 to 2021. Additionally, this paper discusses efforts to increase theuniformity and overall intensity of the UV-C radiation within the chambers through theinstallation of a UV-reflective, porous polytetrafluoroethylene (PTFE) material. Acalculator prototype was additionally designed to calculate the reduction of SARS-CoV-2as a result of UV-C disinfection, and the prototype code is presented. The paperdescribes the selection of UV-C radiation sources for the chambers and the chambers’mechanical and electrical design, PTFE installation, testing, and safetyconsiderations.

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