ACA Brian Cherry Awards 2024 3MT

A cheese producer specialising in smoked cheeses uses stainless steel equipment in their smokehouse. The smoke is acidic and during operation the smokehouse is humid and hot. What type of corrosion is likely to occur?

• Atmospheric corrosion

• Crevice corrosion

• Galvanic corrosion

• General corrosion

Which of the following cheeses is known for having blue veins caused by the mould Penicillium?

• Cheddar

• Gouda

• Ricotta

• Roquefort

Cheese factories use stainless steel tanks to store milk. Chloride-rich cleaning agents are used to sanitise these tanks. What corrosion issue is most likely to take place as a result?

• Galvanic corrosion

• Pitting corrosion

• General corrosion

• Stress corrosion cracking

What is the key ingredient added to milk to curdle it and start the cheese-making process?

• Salt

• Vinegar

• Rennet

• Sugar

A dairy plant experienced frequent corrosion issues around the seals and joints of its cheese packaging machinery. The corrosion led to the breakdown of seals, causing machine malfunctions and potential contamination of the cheese products.

What type of corrosion is the likely culprit?

• Pitting corrosion

• Crevice corrosion

• General corrosion

• Galvanic corrosion

A cheese producer reported sudden failures of the agitators used in large cheese vats. The agitators were made of stainless steel and exposed to both high tensile stress and a corrosive environment. The unexpected breakdowns resulted in costly repairs, lost production time and contamination concerns.

What type of corrosion is the likely culprit?

• Pitting corrosion

• Stress corrosion cracking

• Crevice corrosion

• Galvanic corrosion

A cheese aging facility observed rapid deterioration of their aluminium cheese curing racks, which were in contact with stainless steel fittings. What type of corrosion is the likely culprit?

• Galvanic corrosion

• Microbiologically influenced corrosion

• Stress corrosion cracking

• General corrosion

A dairy plant experienced unexpected corrosion in their stainless steel brine tanks, which were used to store and age cheese in a saltwater solution. Localised pitting and thinning of the tank walls was observed. What type of corrosion is the likely culprit?

• Stress corrosion cracking

• General corrosion

• Microbiologically influenced corrosion

• Crevice corrosion

A cheese processing facility noticed that their stainless steel piping system, which carried whey, was experiencing uniform thinning and material loss over time. What type of corrosion is the likely culprit?

• General corrosion

• Intergranular corrosion

• Microbiologically influenced corrosion

• Stress corrosion cracking

A dairy plant observed corrosion issues in the welded joints of their stainless steel cheese vats, particularly in areas that had been heat-treated during fabrication. What type of corrosion is the likely culprit?

• Intergranular corrosion

• Crevice corrosion

• General corrosion

• Microbiologically influenced corrosion