API-936 Exam - Topic 1 Question 3 Discussion

Actual exam question for API's API-936 exam

Question #: 3
Topic #: 1

[All API-936 Questions]

[Acceptance Criteria]

Maximum allowable crack length, visible on the surface of a dense firebrick, is:

A1/4 in. (6 mm)

B3/8 in. (10 mm)

C1/2 in.(12 mm)

D3/4 in. (19 mm)

Show Suggested Answer

Suggested Answer: C

by Teri at Jun 13, 2025, 01:45 AM

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Angelo

3 months ago

Wait, is it really that low? Seems too strict.

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Art

3 months ago

Definitely agree with that!

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Mona

3 months ago

I think it's 1/4 in. (6 mm).

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Roselle

4 months ago

3/8 in. (10 mm) sounds more reasonable to me.

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Dong

4 months ago

I heard 1/2 in. (12 mm) is acceptable in some cases.

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Benedict

4 months ago

I thought it was 3/4 in. but that seems too high for firebrick. I need to double-check my notes on this.

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Latia

4 months ago

I want to say it's 1/2 in. but I can't remember the exact details. We discussed crack tolerances, but this one is tricky.

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Lisha

5 months ago

I'm not so sure, but I feel like it might be 3/8 in. I recall a question that had a similar format.

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Margarett

5 months ago

I think the maximum crack length is 1/4 in. I remember something about that from our last practice exam.

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Shantay

5 months ago

This seems straightforward enough. I'll go with option C, 1/2 in. (12 mm), as that seems to be the largest allowable crack length based on the information provided.

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Leota

5 months ago

I'm a little confused by the units here. Is this asking for the maximum crack length in inches or millimeters? I'll need to double-check the units before answering.

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Tiera

5 months ago

Okay, I've got this. The key is to focus on the "maximum allowable" part of the question. I think the answer is B, 3/8 in. (10 mm).

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King

5 months ago

Hmm, I'm a bit unsure about this one. I'll need to think it through carefully and make sure I understand the context before selecting an answer.

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Virgilio

6 months ago

This seems like a straightforward question about the maximum allowable crack length in a dense firebrick. I'll carefully review the options and choose the one that best matches the criteria.

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Dalene

8 months ago

Whoa, what's with all these fancy crack measurements? I'm just gonna go with the biggest one, D) 3/4 in. (19 mm). The more cracks, the more character, am I right?

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Rory

8 months ago

Alright, time to use my expert firebrick knowledge! I'm going with A) 1/4 in. (6 mm). Gotta keep those cracks micro, you know?

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Toshia

8 months ago

Hmm, I'm torn between B and C. Guess I'll go with C since it's the middle ground. Although, at this point, the firebrick might as well be a cracker.

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Cecil

7 months ago

User 2: I'm leaning towards C, it's a bit more lenient.

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Teri

8 months ago

User 1: I think I'll go with B, seems like a safe choice.

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Blythe

9 months ago

C) 1/2 in. (12 mm) seems like the most reasonable answer. Anything bigger and the firebrick might as well be swiss cheese!

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Wai

8 months ago

C) 1/2 in. (12 mm) is a safe bet, allowing for some movement without compromising the integrity of the firebrick.

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Ruthann

8 months ago

B) 3/8 in. (10 mm) might be cutting it close, but it could still be acceptable.

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Carman

8 months ago

A) 1/4 in. (6 mm) is too small, it wouldn't allow for any expansion or movement.

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Mammie

9 months ago

I think the correct answer is 1/2 in. (12 mm) because a larger crack could compromise the integrity of the firebrick.

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Lezlie

9 months ago

I'm going with D) 3/4 in. (19 mm). That's a pretty generous allowance, but I guess they want to ensure the firebrick can still function properly.

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Leonida

8 months ago

Willow: Yeah, it's important to make sure the firebrick can still do its job effectively.

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Willow

8 months ago

User 2: I'm going with D) 3/4 in. (19 mm) like you. It does seem like a generous allowance.

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Nicolette

8 months ago

User 1: I think the correct answer is A) 1/4 in. (6 mm).

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Dorethea

9 months ago

I disagree, I believe it is 3/8 in. (10 mm).

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Olene

9 months ago

I think the correct answer is B) 3/8 in. (10 mm). Anything larger than that could compromise the structural integrity of the firebrick.

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Lynsey

8 months ago

I'm not sure, but I think D) 3/4 in. (19 mm) is too large for a crack in a firebrick.

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Carey

8 months ago

I believe it's A) 1/4 in. (6 mm), as any larger crack could lead to failure.

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Evangelina

8 months ago

I think it's actually C) 1/2 in. (12 mm), but I see your point.

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Roxanne

8 months ago

I agree, B) 3/8 in. (10 mm) seems like the correct answer.

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Mammie

9 months ago

I think the maximum allowable crack length is 1/4 in. (6 mm).

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