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Question

Difficulty: HardDirect Fact Retrieval

Read the following technical passage regarding reverse osmosis desalination maintenance:

During high-pressure reverse osmosis (RO) desalination plant maintenance, technicians must perform periodic membrane cleaning to remove inorganic scale accumulation. The standard operating procedure dictates that a 2.0 percent citric acid solution must be circulated through the first-stage pressure vessels at a maximum flow rate of 35 gallons per minute (gpm). The cleaning cycle operates continuously for 45 minutes, provided the solution temperature remains between 20°C and 30°C. If the pH drops below 2.2 at any point during circulation, the process must be immediately aborted to prevent irreversible polyamide membrane degradation.

Statement: According to the passage, the membrane cleaning cycle must be stopped immediately if the circulation pH value falls beneath 2.2.

Answer: Answer

Answer

True
The passage directly confirms that if the pH drops below 2.2 at any point during circulation, the procedure must be aborted immediately to protect the membrane.

Step-by-Step Solution

1
Scan the passage for operational stopping conditions and numerical pH thresholds.
Located the sentence detailing that if the pH drops below 2.2 during circulation, the process must be immediately aborted.
Direct fact retrieval requires pinpointing the exact procedural parameter and its associated trigger.
2
Compare the statement to the explicit factual trigger identified in the passage.
The statement asserts that the cleaning cycle must be stopped immediately if the pH falls beneath 2.2, which mirrors the text directly.
Factual verification confirms complete consistency between the statement and the source text.

Key Concept

Direct Fact Retrieval
Estimated Time:1m 0s
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Topics

Direct Fact Retrieval

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