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Category: Surface preparation

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Daily Quiz (92)

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True or false: In air abrasive blast systems, the bull hose carries pressurized air and abrasive to the blast nozzle.

Wednesday, November 26, 2014


True or false: SSPC has a blast cleaning standard for non-ferrous metals such as architectural aluminum.

Friday, November 21, 2014


What organization has a surface preparation standard for brush-off blast cleaning of non-ferrous metals?

Tuesday, October 14, 2014


What organization offers a standard that gives durability grades of low, medium, and high for paint systems in various environments and levels of surface preparation?

Thursday, September 18, 2014


True or false: A coating system description in a specification may include surface preparation and quality control requirements.

Tuesday, September 2, 2014


According to a JPCL article in July, how can flash rusting of newly abrasive-blasted steel be prevented or minimized?

Wednesday, August 6, 2014


What organization publishes the Standard for the Preparation of Steel Substrates for PSPC?

Monday, June 23, 2014


True or false: HVLP stands for high volume low particulate.

Thursday, June 5, 2014


True or false: Scabbling produces a rougher profile on concrete than does air-abrasive blasting with sand.

Friday, May 30, 2014


True or false: According to a recent JPCL article, planing is more effective than shotblasting in removing asphalt, latex, adhesives and other materials that are thicker than 2 mm from concrete floors.

Friday, May 30, 2014


True or false: Conformance with specified requirements for cleanliness of steel after surface preparation, as described in SSPC standards, is carried out without the aid of instruments.

Wednesday, May 14, 2014


True or false: Centrifugal blast cleaning can be both portable and stationary.

Friday, May 9, 2014


How does one surface preparation industry expert, Dr. Lydia Frenzel, differentiate between flash rust and rust back?

Thursday, March 20, 2014


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

Tuesday, February 11, 2014


How many sets of visual reference guides supplementing written surface preparation standards are published by SSPC?

Tuesday, January 21, 2014


True or false: In a JPCL article describing a study about surface preparation of repair mortars in wastewater treatment plants, the authors concluded that broom finishing was superior to abrasive blasting in producing surfaces for the successful application of protective coatings.

Monday, January 13, 2014


What surface preparation method for concrete produces the largest profile?

Tuesday, January 7, 2014


Ultra high pressure (UHP) waterjetting, using water alone at pressures of 35,000-40,000 psi, is sometimes used for what purpose in coating work?

Monday, January 6, 2014


True or False: Like their counterparts for steel, there are four SSPC surface preparation standards describing the end condition of concrete after cleaning.

Tuesday, December 10, 2013


True or False: SSPC-SP 11, Power Tool Cleaning to Bare Metal, has no requirement for surface profile.

Friday, December 6, 2013


True or False: In judging the conformance of abrasive blast cleaning of steel with SSPC standards, such as SSPC-SP 10, the photos in SSPC-VIS 1 depicting levels of cleanliness take precedence over the written descriptions of required levels of cleanliness.

Thursday, November 21, 2013


SSPC-VIS 1, now called Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast Cleaning, was originally produced by what other standards organization?

Thursday, November 21, 2013


What is the name for an abrasive’s resistance to breakdown on impact?

Monday, November 11, 2013


Centrifugal wheels are used in what kind of equipment?

Wednesday, November 6, 2013


In general, when is it better to use impact power tools (needle gun, roto peen) rather than rotary tools (wire brush, etc.)?

Friday, November 1, 2013


Respirators must be approved for use by what organization?

Tuesday, October 22, 2013


In what kind of work do you hear the term, “operating mix?”

Thursday, October 17, 2013


What is the source of potential inhalation hazards that blasters face in air abrasive blasting operations?

Thursday, October 10, 2013


True or False: A low-pressure, low-impact abrasive blasting process using a blend of walnut shells and staurolite sand has been developed for cleaning architectural sheet metals and other substrates.

Wednesday, October 9, 2013


True or False: In August this year, OSHA issued a proposed rule banning use of crystalline silica as a blasting abrasive.

Wednesday, October 2, 2013


True or False: Wire bristle tools were recently classified as impact power tools in SSPC power tool cleaning standards.

Tuesday, October 1, 2013


What is a name sometimes given to the creation of microcracks in a concrete surface through use of impact, pulverizing, or other mechanical surface preparation methods?

Tuesday, September 24, 2013


Rotating flaps with hard metallic tips are components of what piece of surface preparation equipment?

Thursday, September 19, 2013


Why is crystalline silica sand more likely to cause silicosis when it is used for abrasive blasting, as opposed to when it blows around on a beach?

Tuesday, September 17, 2013


Which of the following ISO 8501-1 standards is equivalent to SSPC-SP 6, Commercial blast?

Friday, September 13, 2013


True or False: Maximum levels of soluble salts that can remain on a steel substrate after surface preparation are mandated in SSPC-Guide 15 and ISO 8502.

Friday, September 6, 2013


Surface roughness and peak count of abrasive-blasted steel are the subject of what SSPC standard?

Wednesday, September 4, 2013


What description fits Initial Condition D of steel before blasting?

Friday, August 30, 2013


True or False: OSHA has lowered the permissible exposure limits on crystalline silica.

Thursday, August 29, 2013


True or false: The number of peaks in a steel surface profile created by abrasive blast cleaning has no effect on coating performance.

Monday, August 12, 2013


True or False? The higher the water pressure of a pressure washer, the more effective will be the rinsing step after coatings are exposed to chemical strippers for the appropriate time on masonry substrates.

Wednesday, August 7, 2013


Which abrasive type is most likely to be used in a portable wheel blast machine for surface preparation of concrete floors?

Tuesday, July 23, 2013


ICRI recommends how much profile in its surface preparation requirements for polymer overlays on concrete?

Friday, June 28, 2013


Reference photographs for surface preparation of steel by waterjetting are found in what document?

Thursday, June 13, 2013


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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