atc88 day 1 hs master april 2008

5/21/2018 Atc88 Day 1 Hs Master April 2008

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BGas PAINTING INSPECTION

SCREEN TEST ONE


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BGas PAINTING INSPECTIONQUESTION 1

Two examples of Hygroscopic Salts would be:a) Iron Phosphates and Iron Chromatesb) Iron Chlorates and Iron Oxidesc) Iron Sulphates and Iron Chloridesd) Iron Sulphides and Iron Silicates


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What is an electrolyte?a) It is a mixture of salts and waterb) A substance which will conduct electricity andcause rustingc) Oxidising liquid which will attack steeld) A substance which will conduct a current andbe broken down by it

QUESTION 2


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Corrosion is defined as:a) Rusting of the Cathode by electrophysicalmeansb) Oxidation of a metal in contact with waterc) Degradation of a material by chemical orelectrochemical meansd) Breakdown of the metal by hydrogen


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Hydrogen is evolved at:a) The Anode at all timesb) The Cathode at all timesc) The Cathode as a by-product of the corrosionreactiond) The Anode as corrosion takes place


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Which Blasting Grade best describesThorough Blast cleaning?

a) Sa 2b) Sa 2c) Sa 3d) Sa 1


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What is the minimum standard of surface cleanlinessspecified by BGC/PS/PA 10?

a) Rust Grade Cb) St 3c) Sa 2 1/2d) 30 to 75 microns


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In a corrosion Circuit, Electrons flow from:a) Anode to Cathode, via Electrolyteb) Positive to Negativec) Electrolyte to Steeld) Anode to Cathode, via metallic path


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Rust Grade A can be described as:a) Tightly adhering Millscale, with evident heavypittingb) Clean white metalc) Tightly adhering Millscale, with no apparentcorrosiond) Millscale which has begun to flake, or can be

scraped away


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Abrasive used on site for British Gas projects must be:a) Mixed with sand, to reduce costb) Dried in an oven prior to usec) Expendabled) Used up to a maximum of three times only.


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Which is the more noble metal:A) SteelB) AluminiumC) MagnesiumD) Tin


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Millscale is made up of which three oxide compounds?A) Rust, Iron oxide, and ScaleB) RSJ, RSC, and RSAC) Wustite, Magnetite, and HaematiteD) Iron Sulphate, Iron Chloride, and Iron Phosphate


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Two factors to be considered when inspecting aSurface Preparation, are:A) Cleanliness and RoughnessB) Rust Grade and material typeC) Abrasive type and TimeD) Surface area and type of contamination


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The Galvanic List is also known as:A) The Metallic Corrosion Potential ChartB) The Electromotive Forces SeriesC) The Element Forces OrderD) The Electronic Chemical Series


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When using a Venturi Nozzle at 100psi, the abrasiveexits at approximately what speed?A) 200 mphB) 450 mphC) 1200 mphD) 100 mph


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Copper Slag is also known as :A) GarnetB) Black sandC) Iron SilicaD) Steel Grit


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The thickness of Millscale is approximately:a) 25 to 100b) 100 to 150 c) zerod) Dependant upon the material thickness


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The force required to separate two surfaces incontact can also be termed:A) ViscosityB) ProfileC) AdhesionD) Blasting


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Blasting in one area for too long, produces what?A) HacklesB) Rogue PeaksC) SliversD) Laminations


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Metallic Shot also has which affect upon the material?A) Stress relievesB) Physically deformsC) Work hardensD) Causes Slivers


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What is the main cause of flash rusting on a substrate?A) Rogue PeaksB) MoistureC) HacklesD) Hygroscopic Salts


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What is the main advantage of using Testex papers forsurface profile measurement?

A) It also measures cleanlinessB) Most accurate over a large areaC) Easy to useD) Permanent record


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Which of the following could be classified as a majorcause of microbial corrosion:A) Sulphur Eating MetalB) Sulphate Reducing BacteriaC) Rust inhibitive saltsD) Iron Phosphates


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Three factors which accelerate the rate of corrosion are:a) Temperature, Time, and Coating systemb) Bi-metallic contact, Hygroscopic Salts, and Bacteriac) Coating system, Pipe diameter, and Ultra Violet lightd) Blasting Grades, Rust Grades, and Surface Profile


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How many Abrasive Blast Cleaning photographsare in BS 7079 part A?

a) 4b) 14c) 8d) 16


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British Gas PA 10 specifies a surface profile of:A) 30 microns to 75 micronsB) 100 microns to 150 micronsC) 10 microns to 40 micronsD) More than 90 microns


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SWAP YOUR PAPERS PLEASE

PUT YOUR NAME ON

YOUR PAPER,

AND PASS IT TO SOMEONE

ELSE TO CHECK


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Two examples of Hygroscopic Salts would be:a) Iron Phosphates and Iron Chromatesb) Iron Chlorates and Iron Oxidesc) Iron Sulphates and Iron Chloridesd) Iron Sulphides and Iron Silicates

ANSWER: C


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What is an electrolyte?a) It is a mixture of salts and waterb) A substance which will conduct electricity andcause rustingc) Oxidising liquid which will attack steeld) A substance which will conduct a current andbe broken down by it

QUESTION 2

ANSWER: D


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Corrosion is defined as:a) Rusting of the Cathode by electrophysicalmeansb) Oxidation of a metal in contact with waterc) Degradation of a material by chemical orelectrochemical meansd) Breakdown of the metal by hydrogen

ANSWER: C


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Hydrogen is evolved at:a) The Anode at all timesb) The Cathode at all timesc) The Cathode as a by-product of the

corrosion reactiond) The Anode as corrosion takes place

ANSWER: C


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Which Blasting Grade best describes Thorough

Blast cleaning?

(a) Sa 2(b) Sa 2

(c) Sa 3

(d) Sa 1

ANSWER: A


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QUESTION 6What is the minimum standard of surface cleanlinessspecified by BGC/PS/PA 10?a) Rust Grade Cb) St 3c) Sa 2 1/2d) 30 to 75 microns

ANSWER: C


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In a corrosion Circuit, Electrons flow from:a) Anode to Cathode, via Electrolyteb) Positive to Negativec) Electrolyte to Steeld) Anode to Cathode, via metallic path

ANSWER: D


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Rust Grade A can be described as:a) Tightly adhering Millscale, with evident heavypittingb) Clean white metalc) Tightly adhering Millscale, with no apparentcorrosiond) Millscale which has begun to flake, or can be

scraped awayANSWER: C


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ANSWER: C

Abrasive used on site for British Gas projects must be:a) Mixed with sand, to reduce costb) Dried in an oven prior to usec) Expendabled) Used up to a maximum of three times only.


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Which is the more noble metal:A) SteelB) AluminiumC) MagnesiumD) Tin

ANSWER: D


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ANSWER: C

Millscale is made up of which three oxide compounds?A) Rust, Iron oxide, and ScaleB) RSJ, RSC, and RSAC) Wustite, Magnetite, and HaematiteD) Iron Sulphate, Iron Chloride, and Iron Phosphate


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Two factors to be considered when inspecting aSurface Preparation, are:A) Cleanliness and RoughnessB) Rust Grade and material typeC) Abrasive type and TimeD) Surface area and type of contamination

ANSWER: A


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The Galvanic List is also known as:A) The Metallic Corrosion Potential ChartB) The Electromotive Forces SeriesC) The Element Forces OrderD) The Electronic Chemical Series

ANSWER: B


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When using a Venturi Nozzle at 100psi, the abrasiveexits at approximately what speed?

A) 200 mphB) 450 mphC) 1200 mphD) 100 mph

ANSWER: B


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Copper Slag is also known as :A) GarnetB) Black sandC) Iron SilicaD) Steel Grit

ANSWER: C


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The thickness of Millscale is approximately:a) 25 to 100b) 100 to 150 c) zerod) Dependant upon the material thickness

ANSWER: A


44/52


The force required to separate two surfaces incontact can also be termed:A) ViscosityB) ProfileC) AdhesionD) Blasting

ANSWER: C


45/52


Blasting in one area for too long, produces what?A) HacklesB) Rogue PeaksC) SliversD) Laminations

ANSWER: B


46/52


Metallic Shot also has which affect upon the material?A) Stress relievesB) Physically deformsC) Work hardensD) Causes Slivers

ANSWER: C


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What is the main cause of flash rusting on a substrate?A) Rogue PeaksB) MoistureC) HacklesD) Hygroscopic Salts

ANSWER: B


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What is the main advantage of using Testex papers forsurface profile measurement?A) It also measures cleanlinessB) Most accurate over a large areaC) Easy to useD) Permanent record

ANSWER: D


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ANSWER: B

Which of the following could be classified as a majorcause of microbial corrosion:

A) Sulphur Eating MetalB) Sulphate Reducing BacteriaC) Rust inhibitive saltsD) Iron Phosphates


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Three factors which accelerate the rate of corrosion are:a) Temperature, Time, and Coating systemb) Bi-metallic contact, Hygroscopic Salts, and Bacteriac) Coating system, Pipe diameter, and Ultra Violet lightd) Blasting Grades, Rust Grades, and Surface Profile

ANSWER: B


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How many Abrasive Blast Cleaning photographsare in BS 7079 part A?a) 4b) 14c) 8d) 16

ANSWER: B


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British Gas PA 10 specifies a surface profile of:A) 30 microns to 75 micronsB) 100 microns to 150 micronsC) 10 microns to 40 micronsD) More than 90 microns

ANSWER: A

atc88 day 1 hs master april 2008

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