Liquid penetrant level 1

All of the following materials can be tested by the usual liquid pen tests except A an unglazed porous ceramic B titanium C high alloy steel D cast iron

A

Excess pen (all pen except that which is in the discontinuity) is removed from the specimen A after the required pen dwell time has elapsed B before the application of the emulsifier if a postemulsifier pen is used C by means of a steam cleaner D only when water washable pen is used

A

How long must a part be kept wet with pen before the removal process is started A it varies depending on the type of pen used, the type of material to be tested, the sensitivity desired, and the type of discontinuities to be detected B since the penetrant will penetrate a discontinuity of any size in a matter of seconds, the removal process should start as soon as possible after the pen has been applied C 3 mins D 10 mins

A

The failure to completely remove acid materials from a part before fluorescent pen is applied will result in A contamination of the pen materials B a need to double the pen time C a permanent stain on the part D all of the above

A

The method used to remove excess visible dye pen from a test specimen is primarily determined by A the surface roughness of the specimen B the type of material being tested C the length of the pen time D all of the above

A

The term used to describe the action of a particular developer in soaking up the pen in a discontinuity, so as to cause the max bleed out of the pen for increased contrast and sensitivity, is known as A blotting B capillary action C concentration D attraction

A

Ultraviolet light equipment is required when penetrant testing by A fluorescent pen method B visible dye pen method C the nonfluorescent pen method D all of the above

A

Usually, the most desirable method of removing excess water washable penetrant after the dwell time is by using A a low pressure coarse water spray B water and brush C a solid steam of water D water and clean rags

A

When an inspector is working in a darkened areas, she should become adjusted to the dark before inspecting parts. The generally accepted minimum time period for becoming accustomed to the dark is A 1 to 5 min B 5 to 10 min C 10 to 15 min D no waiting period is necessary

A

When conducting a pen test using fluorescent pen, UV light equipment is required to A cause the pen to fluoresce B aid the normal capillary action characteristics of a pen C neutralize excess pen on the surface D decrease the surface tension of the part

A

When pen testing parts, the temp of the parts should be near room temperature. If the part is at a low temp when tested the A pen may become viscous B pen may evaporate very rapidly C color intensity of the pen will decrease D pen will tend to adhere to the surface of the part

A

Which of the following can be removed from the surface of a test specimen by vapor degreasing A oil B paint C phosphate coatings D oxides

A

Which of the following characteristics does not apply to liquid pen testing A this method can accurately measure the depth of a crack B this method can be used for on site testing of large parts C this method can be used to file sallow surface discontinuities D this method can be made more or less sensitive by using different pen methods

A

Which of the following conditions will decrease the life of a UV light bulb A line voltage fluctuation B dust on the face of the bulb C changes in room temp D all of the above

A

Which of the following discontinuities can be found by the pen method? A surface crack B subsurface crack C An internal inclusion D None of the above

A

Which of the following is a commonly used classification for penetrant? A postemulsifiable penetrant B nonferrous penetrant C chemical etch pen D nonaqueous pen

A

Which of the following is an advantage of visible dye pen over fluorescent pen A visible dye pen do not require UV light B visible dye pen is more sensitive than fluorescent pen C visible dye pen are superior in penetrating characteristics D visible dye pen are not toxic while fluorescent pen is

A

Which of the following is generally not an accepted method for applying pen A rubbing the pen over the surface B brushing the pen on the part C spraying the pen on the part D dipping the part in pen

A

Which of the following pens can be used when inspection must take place under ordinary lighting conditions A visible dye pen B water washable fluorescent pen C postemulsification fluorescent pen D any of the above

A

Which of the following statements does not apply to developers used during pen testing A developers are normally highly fluorescent B developers often furnish a contrasting background during inspection C developers absorb or blot the pen that remains in discontinuities after the rinse operation has been completed D developers may be either wet or dry

A

Which of the following statements is an incorrect use of crack panels (blocks) A to establish a standard size of crack that can be reproduced as needed B to determine the relative sensitivities of two different penetrants C to determine if a pen has lost or has reduced its brilliance on fluorescent pens because of contamination D to determine the degree or method of cleaning necessary to removing it from the cracks

A

Which of the statements below best states the danger of sandblasting (without subsequent chemical etching) for cleaning surfaces in o be pen tested? A the discontinuities may be penned over and closed B oil contaminants might be sealed in the discontinuities C the sand used in the sandblasting operations may be forced into the discontinuities D the sandblasting operation may introduce discontinuities

A

A good pen must do all of the following except A be able to readily penetrate very fine openings B evaporate very rapidly C be able to remain in relatively coarse openings D be easily removed from the surface after testing

B

A red against white background discontinuity image is most likely to be seen when A dry developers are used B visible dye pen is used C fluorescent postemulsification pens are used D wet developers are used

B

A solvent used to clean the surface of a test specimen must possess all the following characteristics except that the A cleaner must be capable of dissolving oils and greases commonly found on the surface B cleaner must not be flammable C cleaner must be free of excessive contaminants D cleaner must leave a minimal residue on the surface

B

All of the following basic inspection principles apply to the visible penetrant methods except: A the pen must enter the discontinuity in order to form an indication B indications flow when illuminated with UV light C a longer penetration time is required for smaller discontinuities D If the penetrant is washed out of the discontinuity , an indication will not be formed by that discontinuity

B

All of the following materials can be effectively tested with the liquid pen except A aluminum B unglazed ceramics C glass D magnesium

B

Cutting oils may be effectively removed from parts before penetrant testing by: A preheating B vapor degreasing C Washing with water D all of the above

B

In pen testing the time period from developer application to inspection is often referred to as the A emulsification time B development time C dwell time D none of the above

B

Liquid pen testing is capable of detecting A subsurface intergranular stress corrosion cracking discontinuity B discontinuities open to the surface C subsurface discontinuities D lack of fusion (subsurface)

B

The first step in conducting a liquid pen test on a surface that has been painted is to: A carefully apply pen over the surface B completely remove the paint C thoroughly wash the surface with a detergent D wire brush the surface to toughen the smooth surface coating of the Paint

B

The most widely accepted method for removing excessive water washable pen from the surface of a test specimen is by A using a wet rag B using a water spray rinse C washing the part directly under water running from a tap D immersing the part in water

B

The term used to define the tendency of certain liquids to penetrate into small openings such as cracks or fissures is A saturation B capillary action C blotting D wetting ability

B

Using an ultra violet light lamp with a cracked filter or without the filter in place can cause damage to human eyes because the lamp emits A black light B ultraviolet light C infrared light D none of the above

B

What can happen if a part processed by visible dye pen inspection is reprocessed by the fluorescent pen method A a developer may remain on the surface causing background B most visible dyes diminish or destroy fluorescence C pens are not compatible D interpretation will be difficult

B

What could happen if a person looks directly into an ultraviolet light A it will cause permanent damage to the eyes B it will possibly cloud the vision of the person looking into the light for a short period of time C it will cause temporary total blindness D none of the above

B

When drying parts during a penetrant test, the parts A are normally dried at room temp B are normally dried by circulating hot air drying C should be dried in an oven set at a temp of 54c (130f) D should be dried by cool forced air

B

Which of the following is generally accepted as the most important precaution when using solvent removable pens A do not apply an excessive amount of emulsifier B do not apply an excessive amount of solvent C do not use an insufficient rinse pressure D be sure to use an ultraviolet light to determine if the excess pen has been rinsed away

B

Which of the following is the most likely result of an excessive emulsification time when pen testing with postemulsification pens A a large number of no relevant indications could appear on the part B shallow discontinuity indications could be lost C excess pen could remain after the wash D the emulsifier could harden, preventing the developer from blotting the pen in discontinuities

B

Which of the following statements is false A sandblasting is not a recommended method for preparing for a pen test B it is not necessary to remove a film of oil from a part prior to pen testing because the pen is basically an oil C vapor degreasing is a very good method for removing oil from the surface of the part to be tested D a voltage regulator should be used with an ultraviolet light if the line voltage fluctuates

B

Which of the following surface contaminants cannot be removed by cleaning parts in vapor degreaser A grease B rust C heavy oil D soluble oil

B

Which one of the following conditions will affect the rate and the extent a liquid penetrant will enter cracks, fissures, and other small openings? A: the hardness of the specimen being tested B: the surface conditions of the specimen being tested C: the color of the penetrant D: the conductivity of the specimen

B

All of the following methods are commonly used to clean parts prior to penetrant testing except A vapor degreasing B liquid solvent C power wire brushing D alkaline cleaner

C

All of the following parts can be tested by the liquid pen method for except A an iron casting B an aluminum forging C a part made from a porous plastic material D a part made from nonporous material

C

Cleaning the part prior to pen inspection is A not required B important because if the part is not clean the developer cannot be improperly applied C essential because surface contaminants may prevent pen from gaining access to discontinuities D required to eliminate possibility of showing nonrelevant indications

C

In pen testing, developers should be able to perform all of the filling functions except A blotting pen from discontinuities B aiding in providing an image of a discontinuity C adding fluorescence to pen D helping control bleed out

C

Liquid pen inspection cannot find A surface porosity B surface cracks C an internal cavity D a surface forging lap

C

Liquid testing can be used to detect A discontinuities 1.6mm (0.06 in) below the surface B internal discontinuities C discontinuities open to the surface D all discontinuities

C

The contamination of a water washable pen with an excessive amount of water will A Reduce the penetrating quality of the pen B adversely affect the wash ability of the pen C both a and b are correct D neither a or b are corrwxt

C

The final inspection of a test specimen for discontinuities should take place A immediately after the developer has been applied B any time after the developer has been applied C after the developer has been on the test specimen for the proper development time D immediately after the rinse operation

C

The pen applied to the surface of a test specimen A seeps into discontinuities B is absorbed by discontinuities C is drawn into discontinuities by capillary action D is drawn into discontinuities by gravity

C

The purpose of using a developer on a test specimen is to A promote penetration of the pen B absorb emulsifier residues C provide a blotting action to draw pen from the discontinuities and to provide a contrasting background D help to dry the surface for better observation

C

The term used to define the period of time in which the test part is covered with pen is A waiting time B soak time C pen time (dwell time) D bleed in time

C

Water washable pen is applied to a part by dipping. The part is then placed on a rack while the pen seeps into discontinuities. I'd the pen time is too long, it will be difficult to rinse the pen from the part. If this happens the normal rinsing properties can be restored by A chilling the part to a temperature of 4• C (40f) B heating the part to a temp of 54c (130f) C redipping the part D applying a wet developer before attempting to rinse the part

C

When conducting a water test washable liquid pen test, the wet developer is applied A immediately after the pen has been applied B immediately before the pen is applied C after removal of the pen D after removal of the emulsifier

C

When preforming a penetrant test using a postemulsification pen, which of the following is the most critical with respect to proper timing A dwell time B developing time C emulsification time D drying time

C

When using a postemulsification pen it is necessary to apply the emulsifier A before applying the pen B after the water wash operation C after the dwell time D after the development time has elapsed

C

When using fluorescent water washable pen adequate rinsing of the part is assured by A timing of the rise B scrubbing of part surface C rinsing under UV light D using high pressure air with watwr

C

Which of the following discontinuities is most likely to be missed due to improper rinse techniques? A a forging lap B Deep putting C Shallow and broad discontinuities D the rinse technique will not affect the detection of discontinuities

C

Which of the following is generally accepted as the most important precaution when using water washable pens A be sure that the part is washed thoroughly during the rinse operations B be sure that the recommended dwell time is not exceeded C avoid overrinsing the part D avoid over application of emulsifier

C

Which of the following is not a property of a developer used in liquid pen testing A the material must be absorbent B the material must form a thin and uniform coating over a surface C the material must be fluorescent if used with fluorescent pens D the material must not contain ingredients harmful or focus to the operator

C

Which of the following is the most commonly used method for removing no water washable visible dye pen from the surface of a test specimen A dipping in solvent B spraying C hand wiping D blowing

C

Which of the following pen methods is generally used for portable field inspections A the water washable fluorescent pen method B the postemulsification fluorescent pen method C the visible dye pen method D none of the above

C

Which of the following safety precautions does not apply when handling pen materials A prolonged contact of pen with skin should be avoided because the oil or solvent base may cause skin irritation B excessive amounts of developer powders should not be inhaled C air line respirators and complete protective clothing must be worn at all times D because the solvents used with the visible pen process are flammable, this material should be kept away from open flames

C

Which of the following statements concerning liquid pen testing is correct A fluorescent pen will produce red against white discontinuity indications B non fluorescent pen requires the use of UV lights C fluorescent indications will be seen when exposed to UV light D nonfluorescent discontinuities glow in the dark for easy viewing and interpretation

C

Which of the following statements is true A sandblasting is a generally accepted method for cleaning a surface that is to be pen testing B parts should be heated prior to the application is the pen C if the dryer is too high, the heat may degrade the effectiveness of water washable pens D development time should be at least twice the pen time

C

a serious loss of water in a wet developer mix or an excessive over concentration of developer powder can cause A a loss of fluorescence during the inspection operation B nonrelevant indications C cracking of the developer coating during the drying operation D none of the above

C

the terms dry, aqueous wet, and non aqueous wet are used to describe different type of A emulsifier B cleaners C developer D penetrant

C

A generally accepted method for removing excess non water washable penetrant is A repeatedly dipping the test specimen in a cleaner B soaking it in hot detergent water C blowing the excess pen off the surface with compressed air D wiping and cautiously cleaning the part with a cleaner-dampened cloth

D

Before conducting a liquid pen test it is important to ensure that the surface of the paper is free of A oil or grease B acids or chromates C traces of water D all of the above

D

Color contrast pens are commercially available in which of the following variations A normal solvent clean type B water wash Type C postemulsification type D all of the above

D

Developer coatings of excessive thickness A may obscure indications B may be beneficial while observing small indications for fluorescent pen C may be beneficial while observing small indications for visible pen D do not effect the inspection

D

If a part to be penetrant tested is hot, the penetrant: A may become viscous B may reduce sensitivity to small defects C may lose some of its color brilliance D will show small discontinuities better

D

Insufficient rinsing of fluorescent pens will result in A subsequent corrosion on the surface B difficulty in the application of developer C excessive bleed out D excessive background fluorescence

D

Liquid pen testing a nondestructive test that can be used for A locating and evaluating all types of discontinuities B locating and determining the length, width, and depth of discontinuities in a test specimen C determining the tensile strength of a test specimen D locating discontinuities open to the surface

D

Pens may be classified or subdivided by the method used to remove the excess pen. Which of the following is a proper classification in accordance with this statement A nonsolvent removable B vapor decreases C brush removable D water washable

D

The most common type of contaminant in fluorescent penetrant fluid is: A metal filings B oil C detergents (from cleaning) D water

D

The problem with retesting a test specimen with fluorescent pen that has been previously tested using visible dye liquid pen is that A the pen may form beads of the surface B the pen left in the discontinuities may be misleading when the specimen is retested C the pen will lose a great deal of its color brilliance D residue can diminish or destroy fluorescent indications brightness

D

Ultraviolet light, with a proper functioning filter in place, used for fluorescent penetrant inspection can cause permanent damage to: A human tissues B human eyes C human blood cells D none of the above

D

Water washable penetrants may be applied by: A brushing B spraying C dipping D all of the above

D

When applying penetrant by dipping, heating the pen prior to dipping A will not increase the sensitivity B you I'll not increase the capillary action of the pen C will increase the stability of the pen D is not generally recommended

D

When conducting a liquid pen test using a postemulsifiable visible dye pen, the generally accepted method for applying the wet developer is by A brushing B swabbing C dipping D spraying

D

When conducting a pen test a commonly used technique for assuring that the excess pen has been removed prior to the application of a developer is to A Blow compressed air over the surface B chemically etch with absorbent paper C blot the surface with absorbent paper D scan the surface with an ultraviolet light

D

When removing excess pen from the surface of a test specimen A the pen removal operation must not remove the pen from the test specimen B sufficient excess pen must be removed to eliminate an interfering background C the use of a solvent dampened cloth is a common method of pen removal D all of the above

D

When using a fluorescent pen the actual inspection must be performed A in a brightly lighted room B with the part at a temp between 10 and 79 c C immediately after the developer has been applied D in a darkened area under an ultraviolet light

D

When using a postemulsifiable pen, the emulsifier time should be A as long as the penetrant dwell time B half of the pen dwell time C the same as the developer time D only as long as necessary to remove the interfering background

D

When using a wet developer A a thick layer of developer is better than a thin layer for showing very fine cracks B compressed air should be used to remove excess developers C a black developer will show better contrast than a white developer D a thin layer of developer is better than a thick layer for showing very fine cracks

D

When using dry developer, the drying operation is performed A immediately after removal of excess pen B before the inspection step C thoroughly D all of the above

D

Which of the following are commonly accepted methods for applying pen A dipping the part in pen B pouring the pen over the test specimen (flowing) C spraying the pen on the test specimen D all of the above

D

Which of the following could be a source of false indications on a test specimen A residue from previous liquid pen testing B machining oil C scale, rust, and corrosion D all of the above

D

Which of the following factors will affect resolution of pen indications A the sensitivity of the pen materials used B the surface condition of the part C the temp of the part and/or pen D all of the above

D

Which of the following is a disadvantage of using the liquid pen testing method A the liquid pen test method is adaptable to production inspection of small parts B liquid pen testing can locate fine cracks C the liquid pen test method is a relatively simple test method D the liquid pen test method is not effective at all temperatures

D

Which of the following is an acceptable method for applying wet developers A application with a soft brush B application with a hand powder bulb C rubbing with a saturated cloth D spraying or dipping

D

Which of the following is generally the more acceptable method for cleaning parts prior to penetrant testing A sand blasting B wire brushing C grinding D vapor degreaser

D

Which of the following is the primary limitation of liquid pen testing A pen testing cannot be used on ferromagnetic material B pen testing cannot locate shallow surface discontinuities C pen testing cannot be used on nonmetallic surfaces D pen testing cannot locate subsurface discontinuities

D

Which of the following surface conditions could have a detrimental effect on a liquid pen test A wet surface B a rough weld C an oily surface D all of the above

D

While conducting a pen test all of the following health precautions should be applied except A keeping the work area clean B washing any pen from the skin with soap and water as soon as possible C keeping the pen off of clothes D washing any excess pen from skin using gasoline

D

subsurface discontinuities can be best detected by: A a postemulsifiable penetrant method B the visible dye pen method C the fluorescent water washable pen method D none of the above

D

when using solvent removable penetrants, the excess penetrant may be removed by A dipping the part in solvent B spraying the part with water and a solvent C rubbing the part with a wet rag D wiping the part with a rag or cloth that has been lightly moistened with solvent

D

Which of the following is a type of developer used in pen inspection A dry B aqueous particulate C no aqueous particulate D water soluble E all of the above

E