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Quiz Leaderboard: 4/29 - 5/29/2015    Sign in to track your quiz score! | Full Leaderboard

  • 1. Matt Burst (21/22 answered correctly)

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  • 19. Gustavo Vidal (19/22 answered correctly)

  • 20. Adam Carter (18/22 answered correctly)


Wednesday, February 19, 2014

High-pressure, supplied-air respirators are given an Assigned Protection Factor of 25 by NIOSH. What does this 25 mean?

The wearer can be exposed to particulates of 25 microns or smaller.
The wearer can be exposed to breathable material above its OSHA Permissible Exposure Limit for 25 minutes before exiting the exposure zone for at least 10 minutes.
The wearer can be exposed to contaminants in a concentration of up to 25 times OSHA’s Permissible Exposure Limit.
None of these

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Previous Quizzes from the Past Week

Tuesday, February 18, 2014
True or false: With zinc-rich coatings on steel, the zinc becomes the anode in a galvanic cell and sacrifices itself to protect the cathode, the underlying steel.

Monday, February 17, 2014
True or false: A Bresle patch is used to treat dynamic cracks in concrete, especially in secondary containment structures around tanks.

Friday, February 14, 2014
True or false: Krebs units are units of elasticity of a paint.

Thursday, February 13, 2014
True or false: If a zinc-rich coating has an epoxy binder, it is classified as both an organic and an inorganic zinc-rich coating.

Tuesday, February 11, 2014
What happens to the condition of a steel substrate when waterjet cleaning is used to remove rust or existing coatings?


More previous quizzes

RPB Respiratory
GET A FREE COOL TUBE

Take advantage of RPB Safety’s coolest promotion yet! Throughout the entire month of May you will receive a free Cool Tube with every...


Clemco Industries Corp.
Powerful Protection in a Small Package

Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.


Bullard

The Next Generation
of Blasting

• Lightest
• Coolest
• Most Comfortable
• Most Dependable


DeFelsko Corporation
PosiTector 200 for concrete

Rugged, simple and affordable coating thickness gage for concrete measures protective coatings including polyurea.


Hempel (USA) Inc.
HEMPEL PROTECTIVE COATINGS

Efficient systems and high quality products to reduce your maintenance costs. Visit Hempel Protective for more information.


Armakleen Company, The
ARMEX when nondestructive cleaning is critical

When substrates cannot be damaged ARMEX is the only choice for blast media. ARMEX is a USDA approved A-1 cleaner available in eleven formulations.


WINOA Group
W Abrasives : Shot Peening Solutions

W Abrasives has developed an exclusive range of products to boost your peening and blasting performances.


International Bridge Conference
International Bridge Conference

Save the dates to attend the 2015 IBC. Four full days of educational sessions and 150 exhibits all in the City of Bridges. Click here for more information.


Novetas Solutions
Number 1 Crushed Glass Abrasive in America!

Manufactured from 100% Recycled Glass.
NO Crystalline Silica,
Beryllium & Arsenic
Great White Metal Finish!
4 plants on Navy QPL
Call us at 866-775-6226

 
 
 
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