Vol 1. File 8 Daily Exams

8/16/2019 Vol 1. File 8 Daily Exams

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API 580: Supplemental Inspection Certification Program

PART 7.

Daily Examinations


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RISK BASED INSPECTION

Exam – Day 1 (closed book)

Q.1 Successful implementation of RBI will give guidelines for:

a) Appropriate inspection methods, extent of inspection andinspection intervals,

b) Suggestions for Risk mitigation activities,

c) Managing the residual level of risk after inspection and othermitigation actions have been implemented.

d) All of above

Q.2. API 580 is specifically targeted at the application of RBI for :

a] Hydrocarbon industries (Oil & Gas)

b] Chemical process industries

c] Power plants for Electric generation

d] Only a and b above

Q.3. The graphical representation of scenarios from initiation to potentialoutcome of an accident will be typically called as :

a] Event tree

b] Fault tree

c] Risk tree

d] Result tree

Q.4. API 580 does not cover RBI assessment for:

a] Process piping

b] Storage tanks

c] Structural systems

d] Pressure relief devices


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Q.5. The 3 approaches in RBI are typically called :

a) Qualitative, Semi-Qualitative, Realistic

b) Quantitative, Semi-Quantitative, Qualitative

c) Realistic, Quantitative, Qualitative

d) None of above

Q.6. RBI methodology can be adopted for :

a) Entire operating unit

b) Section of operating unit

c) Major system or major equipment

d) All of above

Q.7. Risk Management means:

a) Risk mitigation only

b) Risk mitigation and risk acceptance

c) Risk mitigation, risk acceptance and risk communication

d) Risk assessment, risk mitigation, risk acceptance, and riskcommunication.

Q.8. The term “failure” used for Failure Analysis in RBI typically means:

a) Failure due to human error

b) Power failurec) Loss of containment

d) All of above

Q.9. “Risk driver” in RBI means

a) An item affecting probability significantly,

b) An item affecting consequence significantly,


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c) An item affecting the either probability or consequence or both thesignificantly.

d) A rash driver driving the plant vehicle who causes significant risk

to plant personnel.

Q.10. In RBI analysis ‘ ALARP’ means:

a) Always likely and reasonably possible

b) As large as reasonably practical

c) As large as reasonably profitable

d) As low as reasonably practical


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Answer Key

Exam – Day 1 (closed book)

Q. No. Answer

1 d

2 d

3 a

4 c

5 b

6 d

7 c

8 c

9 c

10 d


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Exam – Day 2 (Closed book)

Q.1. Qualitative risk analysis means

a) A risk analysis based on Quality control plans of equipment

b) A risk analysis that uses broad categorizations for probabilities andconsequences of failure for purpose of risk ranking

c) A risk analysis that uses NDT methods to evaluate risks

d) A risk analysis that uses high quality data for detailed numericalanalysis

Q.2. RBI typically is focused on systematic determination of _______ forrisk analysis and risk ranking

a) Absolute risk

b) Realistic risk

c) Relative risk

d) Residual risk

Q.3. “ISO risk line” typically represents:

a) Constant risk level

b) Risk acceptable to international organization for standards

c) Incident specific occurrence of risk level

d) None of above

Q.4 Risk Matrix and Risk Plot are typically used for:

a) Risk Matrix for Quantitative and Risk Plot for Qualitative analysis

b) Risk Matrix for Qualitative and Risk Plot for Quantitative analysis

c) Both can be used for either Quantitative or Qualitative analysis

d) None of above are correct answers


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Q.5. Quantitative analysis is less precise than quantitative analysis, butless costly and faster. If your objective is to carry out screening oflow risks items/equipment, which type of analysis will you choose?

a) Qualitative

b) Quantitative

c) Quantitative first then Qualitative

d) API 580 does not give any guideline

Q. 6 Effective Inspection by itself can directly reduce risk.

(a) True

(b) Wrong

Q.7 For calculating Damage factor for thinning the term ‘age’ means:

a) Time since installation

b) Time since RBI study was done

c) Time since first inspection

d) Time since last inspection

Q. 8 For finding out damage factor based on ‘inspection Effectiveness’,

we should consider

a) All past inspectionsb) Only last inspection

c) Only internal inspection

d) Only external inspection


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Q.9. In consequence analysis in API RBI methodology

a) Only Area-Based Consequence methodology is used

b) Only Financial-Based Consequence methodology is used

c) None of above these methodologies can be used

d) Any of these methodologies can be used

Q.10. In Quantitative analysis the probability of failure depends on

a) Generic failure frequency only,

b) Damage factor and generic failure frequency,

c) Management systems factor, and generic failure frequency

d) Generic failure frequency , damage factor and management systemsfactor


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Answer Key

Exam Day 2 (Closed book)

Q. No. Answer

1 b

2 c

3 a

4 b

5 a

6 b

7 d

8 a

9 d

10 d


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Exam Day 3 (Open book)

Q.1 Choose correct option

a) The inspection methods will provide little information to correctly identifythe true damage state (or 20 –40% confidence) is ‘Poorly Effective’.

b) The inspection methods that will correctly identify the true damage state in

nearly every case (or 80 –100% confidence) is ‘Highly Effective’.

c) The inspection methods will correctly identify the true damage state abouthalf of the time (or 40 –60% confidence) is ‘Fairly Effective’.

d) All of above are correct statements

Q.2 In an API RBI assessment, which components should be checked forthinning.

a) All components should be checked for thinningb) 50% components should be checked for thinning

c) Only the components with General corrosion should be checked forthinning

d) Only the components with Localised corrosion should be checked forthinning

Q.3 If a piping circuit contains an injection point, then an adjustmentfactor equal to ------ should be used . If a highly effective inspection

for injection point circuit (according to API 570) is performed, thenthis adjustment factor is ….

a) 3, 2

b) 2, 0

c) 3, 1

d) 2, 1


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Q.4 A vessel is in service since year 2003. It is undergoing Generalcorrosion. Up to now, two inspections with external 30% scanning bymanual UT were done, and one internal inspection with 60%examination of the surface (partial internals removed) accompaniedby thickness measurements was done. There is no On-Line

Monitoring. The value of A r t parameter is 0.20. What is the DamageFactor?

a) 4

b) 1

c) 10

d) 5

Q.5 For above vessel if corrosion was localized instead of general. Twoinspections with 30% manual UT scanning, and spot thicknessmeasurements at areas specified by a corrosion specialist were done.Also one internal inspection with 60% visual examination and spot UTmeasurements was done. There is no On-Line Monitoring. The value

of A r t parameter is 0.20. What is the Damage Factor?

a) 10

b) 70

c) 35

d) 3

Q.6 A vessel is in service since year 2003. It is undergoing Chloride stresscorrosion cracking. Choose the correct answer.

a) External Spot Radiography and Spot shear wave ultrasonics is ‘UsuallyEffective inspection

b) Wet fluorescent magnetic particle testing of 100% weldments done frominside is ‘Highly Effective inspection’ .

c) Visual inspection done from inside is ‘Fairly Effective inspection’ .

d) None of above are correct answers


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Q.7 In Chloride SCC, if cracking is known to be present then forcalculating damage factor Severity Index to be used is:

a) 1

b) 50

c) 500

d) 5000

Q. 8 A Carbon steel insulated vessel is operating in marine weather .Temperature=160 deg. F. The Insulation is Fiberglass. Considering

the vessel nozzles, the complexity is can be determined as ‘aboveaverage’ and the insulation condition is ‘average’ What corrosionrate is to be used for Damage Factor calculation?

a) 15.6mpy

b) 12.5mpy

c) 19.5mpy

d) 10 mpy

Q. 9 As per API 581, Financial-Based Consequence of $ 200,000 iscategorized as category ------- in consequence catagories:

a) A

b) B

c) C

d) D

Q. 9 As per API 581, affected Area of 1600 sq. meters is categorized ascategory ------- in Area-Based Consequencec.

a) B

b) C

c) D

d) E


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RISK BASED INSPECTIONAnswer Key

Exam Day 3 (Open book)

Q. No. Answer

1 d

2 a

3 c

4 b

5 c

6 d

7 d

8 a

9 c

10 d


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Q.1. Logic models Event Tree and Fault tree are extensively used in :

a) Qualitative Analysis

b) Quantitative Analysis

c) Used in both a and b

d) Used in neither a or b

Q.2. “Fault Tree” represents a logical model showing

a) Initiation of an event and its consequences

b) Various ways which lead to the occurrence of event

c) Faults in Design and Construction of equipment

d) Faulty in operation and maintenance of the equipment

Q.3. Typical parameters used for assessing environmental damage are:

a) Acres of land affected per year

b) Miles of shoreline affected per year

c) Number of human-use resources affected

d) All of above

Q.4. Determining representative fluid and selecting a set of hole sizes isessential step in:

a) Qualitative approach only

b) Quantitative approach only

c) Essential for both

d) Essential for none


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Q.5. In RBI consequence analysis all releases are modeled in two types,namely :

a) Instantaneous release and continuous release

b) Continuous release and intermittent release

c) Intermittent release and Instantaneous release

d) “Puff” release and Instantaneous release

Q.6. In RBI consequence analysis, if fluid inside the vessel is liquid butits boiling point is less than ambient temperature , the phase

considered for consequence analysis will be taken as :

a) Solid

b) Liquid

c) Gas

d) Liquid – Gas mixture

Q. 7 Probability of leak of a flammable fluid is 0.002, probability that it willcatch fire is 0.5. What is probability of fire ? ( There is nosolation/detection system)

a) 50%

b) 0.0001

c) 0.001

d) 2 %

Q. 8 Which of the following would most unlikely result in Metallurgicaldeterioration ?

a) HTHA

b) Fatigue

c) CUI

d) Chloride SCC


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Q.9 Since RBI is a proven and sound risk management principle; it doesnot matter if designs/installations are faulty

a) True

b) False

c) Cannot say

Q. 10 Engineering judgement and experience of the analyst are mostrequired for which type of RBI assessment

a) Quantitative

b) Qualitative

c) Semi-quantitative

d) All of above


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RISK BASED INSPECTIONAnswer Key


Q. No. Answer

1 b

2 a

3 d

4 b

5 a

6 c

7 c

8 a

9 b

10 b


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Final Exam - Day 5 (Closed Book)

Q.1 In POF calculations Generic Failure Frequency needs to be adjustedby using an adjustment factor which depends on the damagemechanisms that are active in a component and the type ofinspection performed. This factor is called

a) Inspection factorb) Component factor

c) Safety factor

d) Damage factor

Q.2 Identify Correct Statement

a) Properly implemented and correctly monitored RBI generally will result inZero Risk

b) Properly implemented RBI will generally leave “Residual Risk “

c) Properly implemented RBI will give guidance on inspection plan andinspection intervals.

d) b) and c) above are correct statements

Q.3 Mass of fluid available for release in a pressure vessel consists of

a) Mass of fluid in pressure vessel

b) Mass of fluid in pressure vessel + additional massadded in 3 minutes as limited to a 203 mm [8 in.]release hole size.

c) Inventory Group Mass

d) Lower of b) and c)


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Q.4. Consequence of toxic release area should take into account:

a) Area for the personnel injury

b) Area for component damage

c) Total of Both a) and b)

d) Lower of a) and b)

Q5. Integrity operating window is:

a) Window provided in the plant wall for operating Process valves

b) Limits for process variables which if changed beyond limits, willaffect integrity of equipment

c) Imaginary boundary enclosing equipment that is subject to samedamage mechanisms

d) None of above

Q.6 Release hole size for rupture for consequence analysis for a 30” diapressure vessel Is

a) 4”,

b) 30”,

c) 16 “,

d) 10”

Q.7 In RBI, Sonic and subsonic release is applicable for:

a) Liquid Release only

b) Vapor Release only

c) For both type Releases

d) For None of above releases

Q.8 In RBI API 581 Quantitative analysis, Consequences for which of thefollowing are considered


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a) Flammable Consequences

b) Toxic Consequences

c) Non-Flammable Non-Toxic Consequences

d) All of above

Q.9 The parameter Art and Severity index SVI determine the damagefactors. Choose correct choice from following.

a) Parameter Art is used for thinning and Severity index SVI forcracking

b) parameter Art and Severity index SVI both are used for cracking

c) parameter Art and Severity index SVI both are used for thinning

d) Parameter Art is used for cracking and Severity index SVI forthinning

Q. 10 The lowest temperature at which a fluid mixture can ignite without asource of ignition is called

a) Auto-Ignition Temperature

b) Ignition Temperature

c) Flash-point Temperature

d) Dew-point Temperature


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Final Exam - Day 5 (Closed Book)

ANSWER KEY

Q. No. Answer

1 d

2 d

3 d

4 a

5 b

6 c

7 b

8 d

9 a

10 a


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RBI – FINAL EXAM (OPEN BOOK)

Note : Tick mark Single “Most Appropriate” option.

Q. 1 In certain flammable product release the outcome was described as

“The released liquid collected as a liquid pool of flammable materials

and got ignited”. This can typically be called as

a) Fire ball

b) Flash Fire

c) Pool fire

d) Explosion

Q. 2 A rupture case of 40 inch I. D. reactor is best represented by hole size

of

(a) 4”

(b) 16”

(c) 1”

(d) 24”

Q. 3 A Separator has Crude hold up capacity of 1000 kg had a 4” large

leak. The inflow rate during the release is 80 kg/min, Estimate the total

amount of fluid available for release if isolation valve takes 3 minutes to

close

(a) 1500 kg

(b) 1400 kg(c) 1000 kg

(d) 1240 kg

Q. 4) Characteristic SSC in Austentic S.S generally will be

(a) Transangular, and branching

(b) Intrangular and unidirectional (straight).

(c) Independent of chloride content(d) None of the above


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Q. 5 Resistance to sulphidation is generally achieved by

(a) Upgrading to higher nickel Alloys(b) Upgrading to higher Chrominium Alloys

(c) Upgrading to Higher based copper alloys

(d) All of the above

Q.6 For pool fires, the API RBI method assumes a maximum size of ----------area as limits for the flammable consequence area.

a) 100 feet by 100 feet (10,000 ft2)

b) 100 meter by 100 meter (10,000 m2)

c) 10 feet by 10 feet (100 ft2)

d) 10 meter by 10 meter (100 m2)

Q. 7 In Quantitative Analysis, the holes sizes considered for releasemodeling are :

(a) 1”,2”,4” rupture

(b) ½” , 2”, 8” rupture

(c) ¼” , 1”, 4” and rupture ( max 16’)

(d) None of the above.

Q. 8 Probability of leak ( loss of containment) of a flammable fluid is 0.001,

probability that leak will be immediately detected and stopped is 0.03, and

probability that it will catch fire (after it escapes the detection system) is0.1. What is probability of No fire ?

a) 0.000003

b) 0.999997

c) 0.00003

d) 0.99997


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Q.9 For Caustic Cracking, the Severity index was 5000 and 3 fairly effective

inspections were performed. What will be the damage factor?

a) 50b) 500

c) 100

d) 20

Q.10 For Chloride SCC, the Severity index was 500 and 2 Usually effective

inspections were performed. What will be the damage factor?

a) 50b) 500

c) 100

d) 20


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Final Exam - Day 5 (Open Book)

ANSWER KEY

Q. No. Answer

1 c

2 b

3 d

4 a

5 b

6 a

7 c

8 b

9 b

10 d


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API 580: Supplemental Inspection Certification Program

PART 8.

API 580 Code

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Vol 1. File 8 Daily Exams