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NFPA CFI-I Exam - Topic 2 Question 17 Discussion

Actual exam question for NFPA's CFI-I exam
Question #: 17
Topic #: 2
[All CFI-I Questions]

What is the maximum char length for newly introduced mattresses tested in accordance with 16 CFR 1632, "Standard for the Flammability of Mattresses and Mattress Pads"?

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Suggested Answer: A

Under 16 CFR 1632, the flammability of mattresses and mattress pads is tested by exposing the material to a smoldering cigarette.

The maximum allowable char length is 2 inches (51 mm).

This standard ensures that the material does not ignite or propagate fire.

Larger char lengths indicate excessive flammability and would fail the standard.


16 CFR 1632: Federal flammability standards for mattresses.

by Misty at Aug 18, 2025, 04:38 PM

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Caprice
2 months ago
Are you sure about that? Seems high!
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Vesta
2 months ago
Definitely 4 in. - that's the standard!
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Laquita
3 months ago
It's 4 in. (102 mm) max for flammability tests!
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Sabina
3 months ago
Nope, it's 4 in. according to the regulations.
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Felice
3 months ago
I remember 2 inches being mentioned, but I thought that was for older standards. I hope I’m not mixing it up!
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Emeline
3 months ago
I’m leaning towards 5 inches, but I can't recall if that was for a different standard. It’s confusing with all the regulations we studied.
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Marci
4 months ago
I feel like I saw a question similar to this in our practice exam, and it might have been 3 inches. I need to double-check my notes.
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Ernie
4 months ago
I think the maximum char length is 4 inches, but I'm not completely sure. I remember something about it being a common limit in flammability tests.
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Mindy
4 months ago
I'm a little confused by the technical details in this question. I'll make my best guess, but I might need to come back to it if I have time at the end of the exam.
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Remedios
4 months ago
This seems like a straightforward question, but I want to double-check the units to make sure I'm interpreting them correctly. I'll convert the measurements to the same unit to help me compare the options.
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Elvis
4 months ago
Okay, let me think this through step-by-step. The question is asking about the maximum char length, so I'll need to focus on that specific detail in the standard. I'll eliminate any answer choices that don't seem to match that criteria.
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Ranee
4 months ago
Hmm, I'm a bit unsure about this one. I'll need to carefully read through the question and the answer choices to make sure I understand the specific requirements of the 16 CFR 1632 standard.
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Zona
5 months ago
I'm pretty confident this is a straightforward question about the maximum char length for mattresses tested under 16 CFR 1632. I'll review the key details in the question and make my best guess.
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Lai
5 months ago
I think the maximum char length is 4 in. (102 mm).
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