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PE Problem #83

9/27/2018

9 Comments

 
A control area exists within a fully-sprinklered paint manufacturing facility. Current storage of Class IB and IC liquids total 100 gallons. If these and new Class IB and IC liquids are moved into approved liquid storage cabinets, how much more volume is permitted to be stored above the current 100 gallons?
a. 20 gallons
b. 140 gallons
c. 380 gallons
d. 480 gallons

Solution | Posted 09/28/18
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9 Comments
John Higgins
9/27/2018 09:47:12 am

D

Reply
John Higgins
9/27/2018 09:49:36 am

C (forgot to pay attention to last part of question)

Reply
KC
9/27/2018 10:08:12 am

Concur. Reference: Table 9.6.1, plus notes 1 & 2.

Reply
PARI
9/27/2018 10:40:59 am

c

Reply
Stephen Christian
9/27/2018 12:34:24 pm

c.

Reply
Colleen
9/27/2018 09:20:52 pm

Assuming I understand this, I believe the answer is C.

In the chapter for general requirements of storage in NFPA 30, per Table 9.6.1, the max allowable quantity of class IB and IC liquids is 120 gal. The applicable notes 1 and 2 below the table and indicate the quantities can be increased 100% if storage in an approved storage cabinet and increased 100% if the building is protected by an automatic sprinkler system.

The notes say that when both apply, the increase in MAQ "is permitted to be applied accumulatively", so I assume you would calculate as 120x2=240x2=480. Since there is already 100 gal of fluid, this means an additional 380 is permitted on top of the existing amount.

I wasn't sure if you were supposed to do 120+120+another 120 to apply the cumulative increase, but 260 was not an available answer, so I ruled that methodology out.

Reply
KC
9/28/2018 08:24:43 am

Your last paragraph was my exact experience.

Reply
Colleen
9/28/2018 12:41:43 pm

Thanks for sharing, I didn't know if I was the only one!

Ed
9/30/2018 06:04:07 pm

Agree. I thought 860 gallons was the number but that was not a choice.

Reply



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  • Blog
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  • TOOLS
    • TOOLKIT (FREE TRIAL)
    • *TOOLKIT (PURCHASE)
    • SUBMIT AN IDEA
    • BACKFLOW DATABASE*
    • CLEAN AGENT ESTIMATOR*
    • CLOUD CEILING CALCULATOR
    • DOMESTIC DEMAND*
    • FIRE PUMP ANALYZER
    • FIRE PUMP DATABASE*
    • FIRE FLOW CALCULATOR*
    • FRICTION LOSS CALCULATOR
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