Which of the following conditions can be a...

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Question 1 of 205eccefa2bacbc34ba4d479f8

Which of the following conditions can be a cause for the control unit of the separator shown in the illustration to indicate alarm A06? See illustration MO-0127.

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Question 1 of 20

5eccefa2bacbc34ba4d479f8

Which of the following conditions can be a cause for the control unit of the separator shown in the illustration to indicate alarm A06? See illustration MO-0127.

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🔍 Key Concepts

• Study the MARST1 Alarm Indications Program Unit table in the upper right of the illustration and note what A06 is associated with compared to A02 and A07. • Trace the pneumatic/control air line going to the liquid sensor and see how loss of this air would affect what the controller "thinks" is happening in the separator bowl. • Consider how back pressure at the oil outlet and leakage at the water sealing ring would change the liquid interface in the bowl and what the liquid sensor is actually measuring.

💭 Think About

• Which of the listed conditions would actually cause the controller to interpret that there is liquid at the wrong place (i.e., an actual liquid presence at the sensor) versus a fault in the sensing system itself? • Looking at the alarm list, which codes are clearly reserved for sensor/transducer failures, and which code corresponds to a genuine liquid-level or interface problem? • If control air is removed from a pneumatic liquid sensor, will the controller see that as a liquid detection (process condition) or as a transducer/signal fault (instrument condition)?

✅ Before You Answer

• Verify in the alarm table that A06 is labeled for a process condition (liquid indication) and that separate alarms exist for transducer minimum value and transducer fault. • Confirm on the piping diagram that high oil outlet back pressure and sealing ring leakage both affect the position of the oil/water interface near the sensing point. • Check whether loss of control air is more logically tied to the alarms for instrument problems (A02, A07) rather than the alarm that indicates actual liquid presence (A06).

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Question 1 of 205eccefa2bacbc34ba4d479f8

Which of the following conditions can be a cause for the control unit of the separator shown in the illustration to indicate alarm A06? See illustration MO-0127.

Back

Question 1 of 20

5eccefa2bacbc34ba4d479f8

Which of the following conditions can be a cause for the control unit of the separator shown in the illustration to indicate alarm A06? See illustration MO-0127.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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