BGAS Grade 2/3 Model Multiple Choice question & answers - Part 7

-

151.        Why steam cleaning is not conducive the oil and gas industry?

a)            Require electricity

b)            Need more water

c)            Require heat source

d)            Highly expensive





152.        Air/Abrasive stream is using water approx.

a)            One and a half litre /min

b)            Need more water

c)            Two litre/min

d)            Three litre / min

 

153.        Sometimes use flame cleaning at site, what should be followed?

a)            Approval site engineer

b)            Once get approval from client

c)            Using wire brushing grades

d)            Not to be used oil and gas industry

 

154.        The blasting hose should be carbon impregnated?

a)            Under direct operator control for his/her own safety

b)            To reduce the chance of the operator getting shock form static

c)            Black color gives good look

d)            Carbon hose increase the speed of abrasive speed

 

155.        How much air supplied, if nozzle size is ½ inch

a)            450 cfm

b)            413 cfm

c)            100 cfm

d)            220 cfm

 

156.        Which of the recommended stand-off distance and speed at which the abrasive leaves a                           Venturi Nozzle?

a)            450 mm and 200 mph

b)            220 mm and 450 mph

c)            220 mm and 220 mph

d)            450 mm and 450 mph

 

157.        Compared to a Venturi Nozzle, a straight bore nozzle would give

a)            Better paint application

b)            More speed

c)            Larger area coverage

d)            Greater accuracy

 

158.        Operating pressure at

a)            200 psi

b)            450 psi

c)            100 psi

d)            220 psi

 

159.        What safety requirement covered for blasting equipment used?

a)            HASAWA

b)            COSHH

c)            EPA

d)            IGE/SR21

 

 

160.        IGE SR 21 is associated with

a)            Gas Plant Manufacture

b)            Handling of Methanol

c)            Abrasive Blasting Safety

d)            Using of Sand Abrasive

 

161.        Burnishing will produce by 

a)            Needle gun

b)            Wire brush

c)            Emery cloth

d)            Grinders

 

162.        Which one is not associated with wet blasting?

a)            Spark free

b)            Profile roughness

c)            Remove Toxic contents

d)            Remove Soluble Salts

 

163.        High pressure water blasting operates up to which pressure?

a)            100 psi

b)            10,000 psi

c)            250 psi

d)            30000 psi

 

164.        High pressure water plus abrasive injection operates up to which pressure?

a)            100 psi

b)            20,000 psi

c)            250 psi

d)            30000 psi

 

165.        Low pressure water plus abrasive injection operates up to which pressure?

a)            100 psi

b)            20,000 psi

c)            250 psi

d)            30000 psi

 

166.        Which type of the cleaning not allowed in the Oil and Gas industry?

a)            Dry abrasive

b)            Water jetting

c)            Steam cleaning

d)            Hand and power tool

 

167.        Which application not in hand and power tool?

a)            wire brushing

b)            needle gunning

c)            grinding

d)            None of the above

 

168.        Wire brushes used for BGas hand & power tool cleaning, must be made from which material?

a)            Tungsten or Stainless steel

b)            Copper or Brass

c)            Beryllium Bronze or Phosphor Bronze

d)            The same material as the pipe

 

169.        A typical remedy for burnishing would be.

a)            Power brushing

b)            Emery paper or similar

c)            Needle gun

d)            Addition of thinners

 

170.        Very coarse profile will occurs when

a)            High pressure Water blasting

b)            Flame cleaning

c)            Dry Abrasive blasting

d)            Needle Gunning

 

171.        Phosphor Bronze/Beryllium Bronze refers to

a)            Sparking Alloys

b)            Non Sparking Alloys

c)            Alloys of Nickel

d)            Ferroalloys

 

172.        Which of the hand and power tool equipment not allowed in the Gas industry? 

a)            Phosphor bronze

b)            Beryllium bronze

c)            Grinding wheel

d)            Emery cloth


173.        Which grade is not having photographs in wire brushing?

a)            Rust Grade B

b)            Rust Grade C

c)            Rust Grade A

d)            Rust Grade D

  

174.        Which one factor is not flame cleaning? 

a)            Expansion

b)            Dehydration

c)            Heat penetration

d)            Passivation

 

175.        Phosphate process of steel structure is termed as

a)            Expansion

b)            Passivation

c)            Cathodic protection

d)            Salt Detection

 

176.        Which of the following do not belong to the Footners Duplex System?

a)            Chromic Acid or Phosphoric acid

b)            Sulphuric Acid

c)            Iron Sulphates and Iron Chloride

d)            Iron fillings

 

177.        Chemical cleaning is another name for

a)             Silver nitrate test

b)             Potassium ferry cyanide test

c)             Pickling

d)             Copper sulphate test


178.        Concentration and temperature of sulphuric acid in pickling process

a)            5-10% , 65-70 oC and 5-25 minutes

b)            65-70% , 5-10oC and 5-20 minutes

c)            2%, 80oC and 5-25 minutes

d)            80%, 65-75 oC and 5-20 minutes

 

179.        Concentration and temperature of phosphoric/chromic acid in pickling process

a)            5-10% , 65-70 oC and 5-25 minutes

b)            2% , 80 oC and 1-2 minutes

c)            2%, 80oC and 5-25 minutes

d)            80%, 65-75 oC and 5-20 minutes

 

180.        What is pH?

a)            Percentage of Hydrogen

b)            Percentage of Helium

c)            Potential of Hydrogen

d)            Potential of Helium

 

181.        Which pH range covers Acids?

a)            7 to 14

b)            0 to 7

c)            0 to 14

d)            5 to 10

 

182.        Which pH range covers Alkalinity?

a)            7 to 14

b)            0 to 7

c)            0 to 14

d)            5 to 10

 

183.        When measuring acidity, alkalinity, distilled water has a pH value is?

a)            1

b)            3.5 to 4.5

c)            0 to 14

d)            7

 

184.        Which PH range is required after chemical cleaning of steel substrate?

a)            7

b)            7 - 14

c)            4.5 – 7

d)            0

 

185.        What is the neutral figure on the pH scale?

a)            7

b)            7 - 14

c)            4.5 – 7

d)            0

 

186.        What is the main cause of flash rusting on a substrate?

a)            Rogue Peaks

b)            Moisture

c)            Hackles

d)            Hygroscopic salts

 

187.        Inclusion is defect related to

a)             Rogue peak

b)             Lamination

c)             Hackle

d)             High thickness profile

 

188.        If Profile thickness is higher than specified, result will be

a)            Rash rusting

b)            Cause Paint adhesion

c)            Blisters

d)            Mill scale

 

189.        Where would you normally use a comparator gauge?

a)            At CP system reference point

b)            To determine surface roughness

c)            Check for correct pre-heat prior to application of FBE

d)            To assess the rust Grade of a material.


190.        Wet abrasive blast cleaning of a surface should be followed by dry abrasive blast cleaning?

a)            Only as directed by the engineer

b)            To remove the surface profile created by the wet process

c)            Because the immediate oxidation of the substrate after wet blasting must be removed

d)            Does not required

 

191.        Un fused area in steel is _____________

a)            Sliver

b)            Rogue Peak

c)            Hackle

d)            Pinhole

 

192.        Lamination found must referred to

a)            Engineer

b)            Site inspector

c)            Contractor

d)            Project Manager

 

193.        Which of the recommended stand-off distance and speed at which the abrasive leaves a                           Straight bore Nozzle?

a)            450 mm and 200 mph

b)            220 mm and 450 mph

c)            220 mm and 220 mph

d)            450 mm and 450 mph

 

194.        Surface profile thickness assets by

a)            The Comparators

b)            Dial micrometer and needle gauge

c)            Dial micrometer with replica tape

d)            Digital surface needle gauge

 

195.        Every 1psi drop in pressure results in an efficiency drop of 

a)            2 psi

b)            1 ½ psi

c)            3 psi

d)            None

 

196.        Enclosed blasting chambers are used because 

a)            They protect other people and equipment from blast scatter

b)            They are cheap to set up

c)            They provide adequate surface profile

d)            They normally use expendable abrasives

 

197.        Burnishing needs to be treated by

a)            Needle gun

b)            Wire brushes

c)            Grinders

d)            Emery cloth

 

198.        Enclosed system is

a)            Water blasting

b)            Wheelabrators

c)            Flame cleaning

d)            Hand and power tool

 

199.        Open blasting system is

a)            Water Jetting

b)            Wheelabrators

c)            Flame cleaning

d)            Chemical process

 

200.        Mill scale removed by

a)            Use needle gun

b)            Bristle on the brushes

c)            Water Jetting

d)            Dry blasting


Comments

Post a Comment

Popular posts from this blog

BGAS Grade 2/3 Model Multiple Choice question & answers - Part 3

-
Image
  51. Atom acquire the electric charged are a) Atomisation  b) Solaration c)  Polarisation d) Electromation   52. The British standard for preparation of steel substrate?  a) BS 3900  b) IGE SR 21  c)  BS 7079   d) ISO 8501    53. The two factors to consider when inspecting a surface preparation  a) Degree of cleanliness and time taken  b) Surface profile and material condition  c)  Surface profile and degree of cleanliness   d) Dependent upon the material thickness    54. Which is not a surface preparation cleaning methods in before paint application?  a) Dry abrasive blast cleaning  b) Hand and power tool leaning  c) Flame cleaning  d)  Light blast cleaning    55. Which pressure suitable for dry blasting?  a) 20psi  b)  100psi (Pounds per Square Inch)  (1 Psi = 6.89 kPa = 0.068 Bar) c) 220psi  d) 450psi    56. When using a Vent...
Read more

Holiday detection on Painted or Coated Surface

-
Holiday detection on Painted or Coated Surface A coating must be applied as a continuous film to perform its intended function. Early failure will occur if there is a discontinuity—a holiday, as it is commonly called—such as a pinhole, void, crack, thin spot, foreign inclusion, or contaminant in the coating film. Many of these defects are not readily visible, but they can be located using holiday detection equipment. Discontinuity: A void, crack, thin spot, foreign material inclusion, or contamination in the coating film that significantly lowers the electrical resistance of the coating. May also be identified as a holiday or pinhole. Holiday Defects characterized by a film having areas of insufficient thickness, even to the point where parts of the surface may remain uncoated. Holiday Detector: A device that locates discontinuities in a coating film applied to a conductive substrate. Pinhole The formation of minute hole in the wet film or drying due the burst of gases or...
Read more

BGAS Grade 2/3 Model Multiple Choice question & answers - Part 1

-
Image
1.  Corrosion is defined as : a) Rusting of Cathode b) Oxidation of iron in contact with water c)  Degradation of a material by chemical or electrochemical means d) Break down of metal by hydrogen   2. What is an electrolyte? a) It is a mixture of Salts and water b) A substance which will conduct electricity and cause rusting c) Oxidation liquid which will attack steel d)  A substance which will conduct a current and be broken down by it.   3. The degradation of material by chemical or electrochemical means is: a) Pickling followed by passivation b) Acid cleaning c)  Corrosion d) An Electrolyte   4. Is the electrical circuit in a corrosion reaction? a) AC b)  DC c) Negative charge d) Positive Charge   5. Hydrogen is evolved at a) The anode at all times b) The cathode at all times c)  The cathode as a by-product of the corrosion reaction d) The anode as corrosion takes place   6. Positively charged area  a)  Anode b) Cathod...
Read more