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Daily Quiz (48)

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According to JPCL author David Dorrow, what makes an abrasive “green?”

Monday, April 29, 2013

True or False: Sponge blasting employs particles of sponge as abrasive.

Wednesday, April 24, 2013

True or false: SSPC visual standards showing degrees of cleaning of steel take precedence over the descriptions of required cleanliness in SSPC’s written surface preparation standards.

Tuesday, April 16, 2013

True or false: All the SSPC surface preparation standards are issued jointly with NACE.

Tuesday, April 16, 2013

Determining the particle size distribution of blast abrasive is achieved by what method?

Tuesday, March 12, 2013

What organization does not produce standards for the surface preparation of concrete?

Thursday, February 7, 2013

True or false: In air abrasive blast cleaning of steel, a venture nozzle generates a deeper blast profile than a straight bore nozzle with the same diameter opening.

Wednesday, February 6, 2013

True or false: Some experts recommend that a weathered TPO roof be prepared for coating by cleaning with an aqueous cleaner followed by power washing.

Friday, February 1, 2013

What organization has a standard for the surface preparation of concrete?

Wednesday, January 23, 2013

True or false: Dry ice blasting produces a lesser volume of debris than the amount produced by air abrasive blasting using slag abrasive.

Tuesday, January 22, 2013

True or false: The USDA Forest Products Laboratory (FPL) recommends special surface preparation prior to painting if bare wood is exposed to the atmosphere for more than three to four weeks.

Friday, January 4, 2013

Which of the following cleaning techniques is most likely to remove soluble salts from a heavily pitted steel surface?

Wednesday, January 2, 2013

True or false: There is an SSPC power tool cleaning surface preparation standard describing a degree of cleanliness that falls between Power Tool Cleaning, SSPC-SP 3, and Power Tool Cleaning to Bare Metal, SSPC-SP 11.

Monday, December 24, 2012

True or false: SSPC published a surface preparation standard, now discontinued, describing flame cleaning of steel.

Tuesday, December 4, 2012

True or false: UHP waterjetting at 35,000 to 40,000 psi is typically used for surface preparation of stucco before painting.

Friday, November 30, 2012

Which of the following is an environmentally benign material sometimes used to etch concrete before application of coatings?

Tuesday, November 13, 2012

When water under pressures of 30,000-40,000 psi is used to clean steel before painting, what is this form of cleaning called?

Monday, October 22, 2012

If you’re a contractor concerned with meeting the end condition appearance requirements for steel after blast cleaning, what precaution might you take?

Tuesday, October 16, 2012

According to SSPC's Surface Preparation Commentary for Steel and Concrete Substrates (SSPC-SP COM), final dry blast cleaning should not be conducted when the steel surface is less than how many Fahrenheit degrees above the dew point?

Thursday, September 27, 2012

True or False: SSPC’s recent revisions to SSPC-SP 11 and SSPC-SP 15 changed the standards’ requirements for surface cleanliness and minimum surface profile.

Friday, September 14, 2012

What kind of abrasive was used to remove the failing baked-on gold enamel from 30,000 square feet of clay tiles on the New York Life building in preparation for applying gold leaf?

Tuesday, August 28, 2012

Which of the following is an abrasive media used in a blasting system on delicate substrates?

Tuesday, August 21, 2012

“Surface Preparation and Cleaning of Metals by Waterjetting Prior to Coating” is a newly revised standard by:

Monday, August 6, 2012

Which of the following statements about SSPC-SP 11, Power Tool Cleaning to Bare Metal, is true?

Friday, August 3, 2012

If a specification requires one of the following–brush-off blasting (SSPC-SP 7), commercial blasting (SSPC-SP 6), or near-white blasting (SSPC-SP 10), what other cleaning standard is invoked?

Wednesday, August 1, 2012

What organization recently issued a standard for measuring the profile of concrete after surface preparation?

Tuesday, July 31, 2012

True or False: The Australasian Corrosion Association is licensed to teach SSPC’s C7 Abrasive Blasting course.

Thursday, July 5, 2012

True or False: Dehumidification equipment is sometimes used to “hold the blast” after surface preparation of the interior of a storage tank.

Monday, May 7, 2012

What is a typical particle speed for abrasive in an air abrasive blast system that utilizes a venturi nozzle?

Wednesday, March 21, 2012

True or false: If you are removing a soft, pliable coating from a steel surface, a rounded abrasive will be more productive than an angular one.

Wednesday, March 7, 2012

What is the name usually given to a robotic surface preparation machine used in the field on ship and tank exteriors?

Tuesday, January 17, 2012

When acid etching is used to create a profile on concrete in preparation for painting, why is it important to rinse the concrete thoroughly after the etching is completed?

Wednesday, January 4, 2012

Why is crystalline silica sand more likely to cause silicosis when used as an air abrasive blasting material than it is in its natural state, for instance, as beach or river sand?

Tuesday, December 13, 2011

True or false: All the SSPC surface preparation standards are issued jointly with NACE.

Monday, October 31, 2011

Which of the following is most likely to be the result of excessive profile depth on steel after blast cleaning?

Tuesday, October 18, 2011

True or false: ISO Sa2.5, describing very thorough abrasive blast cleaning, gives a more comprehensive written description of the end condition of the steel after blasting than SSPC SP 10/NACE No. 2, Near white metal, which requires a similar end condition.

Monday, September 26, 2011

Which of the following factors influences the appearance of steel after blast cleaning?

Friday, September 23, 2011

In general, which of the following coating types or conditions is easiest to remove by blast cleaning?

Tuesday, September 20, 2011

The ISO surface preparation standard Sa 3 most closely resembles what SSPC/NACE surface preparation standard?

Thursday, September 15, 2011

Which of the following cleaning techniques is least likely to remove soluble salts from a steel surface?

Monday, August 8, 2011

True or false: In abrasive blasting, the harder the abrasive, the deeper the profile it is likely to generate.

Tuesday, August 2, 2011

A White Metal Blast, SSPC-SP 5, allows what to remain on the surface after blast cleaning?

Thursday, July 28, 2011

To totally remove coatings from brick and at the same time to minimize substrate damage and avoid generation of airborne dust, which of the following surface preparation methods makes the most sense?

Friday, June 17, 2011

Which of the following surface preparation methods for concrete produces the largest surface profile?

Monday, May 9, 2011

True or false: The SSPC surface preparation standards were numbered according to the chronological order in which they were adopted, not according to their degree of thoroughness.

Tuesday, January 11, 2011

True or false: In surface preparation operations, hackles are most likely to be formed on steel substrates when the blast abrasive is steel shot.

Friday, January 7, 2011

Rotating flaps with hard metallic tips is a component of what piece of surface preparation equipment?

Friday, December 10, 2010

Common surface imperfections, as opposed to contaminants, in newly placed concrete that deserve attention in surface preparation operations include all but which one of the following?

Friday, September 10, 2010

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