COVID-19: Guidelines on disinfection of common public places including offices by using Sodium Hypochlorite This document aims to provide interim guidance about the environmental cleaning/decontamination of common public places including offices in areas reporting COVID-19.
Coronavirus Disease 2019 (COVID -19) is an acute respiratory disease caused by a novel Coronavirus (SARS-CoV-2), transmitted in most instances through respiratory droplets, direct contact with cases and also through contaminated surfaces/objects. Though the virus survives on environmental surfaces for varied period of time, it gets easily inactivated by chemical disinfectants.
In view of the above, the following guidelines are to be followed, especially in areas reporting COVID-19. For ease of implementation the guideline divided these areas into (i)
indoor areas, (ii) outdoor areas and (iii) public toilets.
- Indoor areas including office spaces. Office spaces, including conference rooms should be cleaned every evening after office hours or early in the morning before the rooms are occupied. If contact surface is visibly dirty, it should be cleaned with soap and water prior to disinfection. Prior to cleaning, the worker should wear disposable rubber boots, gloves (heavy duty), and a triple layer mask.
Start cleaning from cleaner areas and proceed towards dirtier areas.
All indoor areas such as entrance lobbies, corridors and staircases, escalators, elevators, security guard booths, office rooms, meeting rooms, cafeteria should be mopped with a disinfectant with 1% sodium hypochlorite or phenolic disinfectants. The guidelines for preparing fresh 1% sodium hypochlorite solution is at Annexure I
High contact surfaces such elevator buttons, handrails / handles and call buttons, escalator handrails, public counters, intercom systems, equipment like telephone, printers/scanners, and other office machines should be cleaned twice daily by mopping with a linen/absorbable cloth soaked in 1% sodium hypochlorite. Frequently touched areas like table tops, chair handles, pens, diary files, keyboards, mouse, mouse pad, tea/coffee dispensing machines etc. should specially be cleaned.
In a meeting/conference/office room, if someone is coughing, without following respiratory etiquettes or mask, the areas around his/her seat should be vacated and cleaned with 1% sodium hypochlorite.
Carefully clean the equipment used in cleaning at the end of the cleaning process.
In addition, all employees should consider cleaning the work area in front of them with a disinfecting wipe prior to use and sit one seat further away from others, if possible.
- Outdoor areas Outdoor areas have less risk then indoor areas due to air currents and exposure to sunlight. These include bus stops, railway platforms, parks, roads, etc. Cleaning and disinfection efforts should be targeted to frequently touched/contaminated surfaces as already detailed above.
- Public toilets Sanitary workers must use separate set of cleaning equipment for toilets (mops, nylon scrubber and separate set for sink and commode). They should always wear disposable protective gloves while cleaning a toilet. Always use freshly prepared 1% Sodium Hypochlorite Solution. Do not use disinfectants spray on potentially highly contaminated areas (such as toilet bowl or surrounding surfaces) as it may create splashes which can further spread the virus. To prevent cross contamination, discard cleaning material made of cloth (mop and wiping cloth) in appropriate bags after cleaning and disinfecting. Wear new pair of gloves and fasten the bag. Disinfect all cleaning equipment after use and before using in other area Disinfect buckets by soaking in bleach solution or rinse in hot water
Guidelines for Preparation of 1% sodium hypochlorite solution
|Sodium hypochlorite – liquid bleach||10%||1 part bleach to 9 parts water|
|Sodium hypochlorite – liquid||5%||1 part bleach to 4 parts water|
Pack Size & MRP: