Level 2 Food Hygiene Certificate Cleaning and Disinfection 2

Question 1

What does COSHH stand for and why is it relevant to food premises?

Accepted Answer

Control of Substances Hazardous to Health — it governs the safe storage, use, and handling of chemicals such as cleaning products in the workplace

Answer

COSHH stands for Control of Substances Hazardous to Health. Under the COSHH Regulations 2002, employers must assess risks from hazardous substances (including cleaning chemicals, disinfectants, and sanitisers), provide safety data sheets, ensure correct storage, and train staff on safe use. This prevents chemical contamination of food and protects staff health.

Question 2

What temperature does water need to reach for heat disinfection to be effective?

Accepted Answer

82°C or above for a contact time as specified by guidelines

Answer

Heat disinfection requires water at 82°C or above to be effective. This can be achieved through dishwashers with appropriate final rinse temperatures or by immersing items in water at 82°C+. Heat disinfection has the advantage of leaving no chemical residues, unlike chemical disinfection methods.

Question 3

Where should cleaning chemicals be stored in a food premises?

Accepted Answer

In a separate, locked storage area away from food, clearly labelled, with Safety Data Sheets accessible

Answer

Cleaning chemicals must be stored in a dedicated, secure area completely separate from food, food packaging, and food preparation areas. They should be clearly labelled in their original containers (never decanted into food containers), and Safety Data Sheets (SDS) must be accessible. This prevents chemical contamination of food.

Question 4

Why is it important to rinse surfaces after applying chemical disinfectant in a food preparation area?

Accepted Answer

To remove chemical residues that could contaminate food if left on the surface

Answer

Many chemical disinfectants can leave residues on surfaces that could transfer to food, causing chemical contamination. Rinsing with clean water after the required contact time removes these residues. Some sanitisers are designed to be 'no-rinse' formulations, but unless the product specifically states this, surfaces should always be rinsed after disinfection.

Question 5

What is a biofilm and why is it a concern in food premises?

Accepted Answer

A layer of microorganisms that attaches to surfaces and becomes resistant to normal cleaning and disinfection, potentially harbouring harmful bacteria

Answer

A biofilm is a community of microorganisms (bacteria, yeasts, moulds) that attach to surfaces and produce a protective slimy matrix. Biofilms are very difficult to remove with standard cleaning because the matrix protects the bacteria from disinfectants. They commonly form on wet surfaces, drains, and equipment. Preventing biofilm formation requires thorough, regular cleaning and complete drying of surfaces.

Level 2 Food Hygiene Practice Test

Level 2 Food Hygiene Practice Test

Level 2 Food Hygiene Certificate Cleaning and Disinfection 2