Discuss Exin CDCS Exam Topic 1 Question 18

What is a potential disadvantage of using water mist as a fire extinguishing system?

AIt only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire

BIt will rapidly increase the humidity level in the data center, which can cause a potential risk for the operation of the equipment

CIt extracts oxygen from the air creating a potential risk for humans inside the computer room

DIt has droplets that are too small (100-120 microns) so it can only be used for small fires

Suggested Answer: B

A potential disadvantage of using a water mist fire suppression system is that it can rapidly increase the humidity within the data center, which may pose risks to sensitive electronic equipment. Excessive humidity can lead to condensation, which could damage electronics and lead to short circuits or corrosion over time.

Detailed Explanation:

Water mist systems use fine droplets to suppress fires by cooling and displacing heat. However, the moisture generated may raise the humidity level to the point where it exceeds safe operational limits for IT equipment. Therefore, while water mist systems are effective in fire suppression, they may not be ideal in environments where high humidity could damage sensitive equipment.

EPI Data Center Specialist References:

EPI guidelines advise considering the impact of humidity from fire suppression systems, particularly in environments housing electronic equipment. It's essential to weigh the benefits of fire suppression against potential risks to operational equipment when choosing suppression methods.

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28 comments · newest first

Laurene 10 months ago

Small droplets might not be enough for bigger fires.

Gerardo 10 months ago

Wait, it only uses 10% of the water? That seems risky.

Staci 11 months ago

Totally agree, that could mess up the equipment!

Laurel 11 months ago

Isn't extracting oxygen a bit extreme? Sounds dangerous!

Kimberlie 11 months ago

I heard it can increase humidity levels in data centers.

Davida 11 months ago

I feel like the humidity issue is a big concern, especially in data centers. I might go with B for that reason.

Pansy 12 months ago

I practiced a question about the risks of oxygen displacement with water mist, so I’m leaning towards option C being a disadvantage.

Fidelia 12 months ago

I’m not sure, but I think the small droplet size might limit its effectiveness on larger fires.

Alison 12 months ago

I remember reading that water mist systems can actually increase humidity, which could be a problem for sensitive equipment.

Allene 1 year ago

This is a tricky one. I'm not super familiar with the details of water mist systems, so I'll need to rely on my general fire safety knowledge to reason through the potential issues. I'll start by considering how the reduced water usage and increased humidity could impact the effectiveness and safety of the system.

France 1 year ago

Okay, I think I've got this. The key here is to identify the unique characteristics of water mist that could be problematic in certain situations. The oxygen extraction and small droplet size seem like the most likely disadvantages to focus on.

Rana 1 year ago

Hmm, I'm a bit unsure about this one. I know water mist systems use less water, but I'm not sure if that's necessarily a disadvantage. The humidity increase could be problematic, but I'll need to think through the potential risks more carefully.

An 1 year ago

This seems like a straightforward question about the potential drawbacks of using water mist as a fire extinguishing system. I'll need to carefully consider each option and think about the key differences between water mist and traditional water-based systems.

Lucy 1 year ago

I still think option A is the main disadvantage, as not having enough water can be a big issue in case of a fire.

Jesusita 1 year ago

I feel like Option B is the way to go. No one wants to deal with a swamp in their data center, am I right?

Meaghan 1 year ago

That's a good point, it could also be a potential risk for the equipment operation.

Mari 1 year ago

Haha, Option D is just ridiculous. Small droplets? What is this, a fire extinguisher for ants?

Ressie 1 year ago

↳ replying to Mari

A) It only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire

William 1 year ago

But what about the option B, about increasing humidity level in the data center?

Rhea 1 year ago

Hmm, I'm leaning towards Option A. If it uses less water, that could be a potential issue for effectively putting out the fire.

Vicki 1 year ago

I'm not sure about that. I think Option C might be the better choice. Reducing oxygen levels could create a dangerous situation for people.

Twanna 1 year ago

↳ replying to Vicki

But Option A mentions that it might not be enough water to suppress the fire.

Chan 1 year ago

↳ replying to Vicki

I think Option C might be the better choice. Reducing oxygen levels could create a dangerous situation for people.

Lucy 1 year ago

I agree with Meaghan, that might not be enough to suppress the fire effectively.

Ruthann 1 year ago

Option B is definitely the correct answer. Increased humidity in a data center can cause a lot of problems for the equipment.

Aileen 1 year ago

↳ replying to Ruthann

B) It will rapidly increase the humidity level in the data center, which can cause a potential risk for the operation of the equipment

Adrianna 1 year ago

↳ replying to Ruthann

A) It only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire

Meaghan 1 year ago

I think the potential disadvantage is that it only uses 10% of the water normally used in a water-based fire suppression.

Exin CDCS Exam - Topic 1 Question 18 Discussion