C&D Requirement and Technologies

Which of the following is required for disinfection to be effective?

• Low water temperature

• A dry surface

• A clean surface

• Manual scrubbing

Which factors form the Sinner Circle?

• Pressure, humidity, soil load, design

• Time, temperature, mechanical action, chemical type & concentration

• Conductivity, pH, temperature, flow rate

• Flow velocity, turbulence, pipe size, pressure

Which of the following is one of the four mandatory steps in the 8‑step cleaning process?

• Pre‑rinse

• Final rinse

• Drain/dry

• Disinfection

C&D water must meet what minimum requirement?

• Sterile water

• Demineralized water

• Potable water (WHO guidelines)

• Distilled water

In CIP, the minimum required flow velocity in pipes is:

• 0.5 m/s

• 1.0 m/s

• 1.5 m/s

• 3.0 m/s

Static spray balls should ONLY be used when:

• They are the cheapest option

• A risk assessment confirms acceptable cleanability

• The tank diameter is small

• The water temperature is above 80°C

What is a critical parameter for tank cleaning devices?

• Device colour

• Impact force from flow/pressure

• Cleaning done only at low temperature

• Use of disposable nozzles

COP must be performed in:

• Any production hall

• Next to the production line

• A physically segregated area

• An area outside the production hall

Which OPC cleaning method produces fewer aerosols and longer contact time?

• High‑pressure water jet

• Foam cleaning

• Hot air cleaning

• Abrasion cleaning

Environmental cleaning requires that floors must be:

• Always wet for hygiene

• Kept dry during production and after cleaning

• Cleaned only once per week

• Cleaned only using vacuum systems