​In which of the following scenarios is neither explosion protection nor suppression system required?
a. Flammable paint warehouse mixing rooms where open transfer of paint occurs
b. Dust ventilator equipment where the dust density can be above its lower flammability limit
c. Mechanical room where service equipment is subject to explosion
d. All of the above require either explosion protection or suppression systems

Solution | Posted 08/27/19

We manufacture dust collectors and pre-pipe fire sprinklers within them with a couple fusible fittings.

We pressure test the pipe at our shop, however, when a contractor connects to them in the field, are there any code/standard requirements to check the system for leaks after connecting to the system?

We put on our drawings that the contractor should test for leaks, however, we're trying to determine what requirements exist for this application.

​The problem we're running into is that the connection is supposed to be made and checked before installing cartridges. If a leak occurs, the contractor could address and not get the paper cartridges all wet with running water down at the floor. In this last case they didn't, and I'm trying to address future installation of systems and make sure the contractor checks for leaks. 

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I've taken technical writing courses and have experience working with MasterSpec, US Military specifications, vendor specifications, and various ownership standard specifications.

I'm giving an internal training to our younger staff and I'm particularly interested in opinions from contractors and vendors who regularly read a variety of specifications for bidding.

What advice would you give for those who write specifications? I'd be interested in helping train our staff as well as improve myself.

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A cotton production facility has areas of the production where fibers are considered easily ignitable. Which of the following trucks is not permitted in these areas?
a. Diesel Type DY
b. Electric Type EE
c. Diesel Type DS
d. Electric Type EX

Solution | Posted 07/13/18