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Daily Quiz (99)


True or false: In North America, SSPC is the sole publisher of hand- and power-tool cleaning standards.


True or false: Abrasive particles in an efficient air abrasive blast system typically travel at a speed of 100 miles per hour.


SP 3 is a shorthand version of SSPC-SP 3, Power Tool Cleaning, but it can also refer to what research program important to the coatings industry?


True or false: According to a recent JPCL article, ISO’s Sa 2 “thorough” blast cleaning standard is equivalent to SSPC-SP 14, NACE No. 8 Industrial Blast Cleaning.


What is the name of the Norwegian standards on coating and surface preparation?


A broom finish on concrete translates to approximately what level of ICRI’s Concrete Surface Preparation (CSP) standards?


True or false: The appearance of steel after blast cleaning is affected by the type of abrasive used, among other factors.


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


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


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


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?


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


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


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


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


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


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.


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.


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


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


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


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


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.


What surface preparation method for concrete produces the largest profile?


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?


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


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


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.


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?


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


Centrifugal wheels are used in what kind of equipment?


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


Respirators must be approved for use by what organization?


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


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


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.


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


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


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?


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


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?


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


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.


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


What description fits Initial Condition D of steel before blasting?


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


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


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.


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


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


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


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


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


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.


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


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


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


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.


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.


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


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


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.


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


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.


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


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


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


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


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


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?


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.


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?


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


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


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


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?


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


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


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


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


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.


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


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?


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?


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


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


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.


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


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


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


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


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


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


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?


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


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.


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


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


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?


 
 
   

SSPC: The Society for Protective Coatings
http://www.sspc.org/

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Abrasives Inc.
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Faced with higher abrasive costs? We invite you to call & check our rates on Black Magic® coal slag and other quality blast materials. Abrasives Inc. 800-584-7524


Absolute Equipment/Grand Rental Station
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CS Unitec
Work Cleaner and Safer

CS Unitec’s Vibro-Lo low-vibration scalers offer high performance for greater productivity & improved operator comfort. Optional dust shroud. info@csunitec.com


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.


Novatek Corporation
Dustless Coatings Removal

Strip it, clean it, and profile it,
all dust free! High production
rates and Blast like finishes.
Comply with new lead
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Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com


N.T. Ruddock Co.

Our Abrasives Hold Up Under Pressure

N. T. Ruddock focuses on abrasive selection, equipment evaluation, equipment maintenance & reduction of abrasive consumption. Other services include Screen Analysis & Background Radiation Testing.


DRYCO
The one way to control
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Temporary climate control equipment. Dehumidifiers,
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Call: 866-379-2600

 
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