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NEW QUESTION # 45
Aqueous chloride solution is carried into a sensitized stainless steel vessel, the following cracking mechanism
takes very rapidly depending on temperature.
- A. Chloride stress corrosion cracking
- B. Sulphide stress corrosion cracking
- C. Leak can occur
Answer: A
NEW QUESTION # 46
Rbimay include methodologiestoassess the effectiveness ofthe management systems in maintaining
- A. Mechanical integrity
- B. Total asset integrity
- C. Plant integrity
Answer: A
NEW QUESTION # 47
Following are the non-inspection mitigation actions except one
- A. Maintenance of strict controls on operating conditions
- B. Equipment redesign
- C. Risk management by monitoring the deterioration
- D. Replacement or upgrade
Answer: C
NEW QUESTION # 48
Following is the unit of measure of consequence that is least developed among those currently used for rbi assessment
- A. Affected area
- B. Safety
- C. Environmental damage
- D. Cost
Answer: C
NEW QUESTION # 49
______________refers to a prescriptive methodology that has resultedfrom the application of risk analysis techniques at many different types of facilities-
- A. Quantitative risk assessment (qra)
- B. Qualitative risk assessment
- C. Semi quantitative risk assessment
Answer: A
NEW QUESTION # 50
______________ provides a consistent methodology for assessing the optimum combination of methods and
frequencies.
- A. RBI
- B. HAZOP
- C. PHA
- D. REM
Answer: A
NEW QUESTION # 51
The primary product of a rbi effort should be
- A. An inspection plan for each equipment item evaluated
- B. Mitigation plan for each equipment item evaluated
- C. Residual risk assessment plan for each equipment item evaluated
Answer: A
NEW QUESTION # 52
The event may be
- A. Certain or uncertain
- B. Singular or multiple
- C. Negative or positive
- D. Loss or gain
Answer: B
NEW QUESTION # 53
RBI as a risk-based approach focuses attention specifically on:
- A. inspection intervals based on a percentage of equipment life.
- B. the equipment and associated damage mechanisms.
- C. consequence-based inspection intervals.
- D. on-stream inspections in lieu of internal inspections.
Answer: B
Explanation:
According to API 580, Section 4.3:
"RBI as a risk-based approach focuses attention specifically on the equipment and associated damage mechanisms representing the most risk to the facility." This confirms that the correct focus of RBI is on the equipment and the damage mechanisms that pose the greatest risk-making Option A correct. Other options are examples of traditional inspection strategies, not the defining focus of RBI.
Reference: API 580, 2nd Edition (2016), Section 4.3
NEW QUESTION # 54
Following are the common mechanical deterioration mechanisms except
- A. Intergranular corrosion
- B. Tensile overload
- C. Fatigue
- D. Stress/creep rupture
Answer: A
NEW QUESTION # 55
Termination of the ability of a system, structure, or component to perform its required function of containment offluid (le loss of containment)
- A. Risk
- B. Failure
- C. Outcome
Answer: B
NEW QUESTION # 56
One of the key elements of an inspection plan is:
- A. probability of failure.
- B. repairs necessary to reduce risk.
- C. examination methods to be used.
- D. consequence of failure.
Answer: C
Explanation:
API 580 outlines the required contents of an inspection plan in Section 12.3 and also in the "Output" section:
"The RBI inspection plan should include:
b) inspection methods that should be used;
c) extent of inspection (percent of total area to be examined or specific locations); d) inspection interval or next inspection date (timing)." Therefore, "examination methods to be used" is a fundamental part of the inspection plan, as explicitly stated.
Probability and consequence of failure are inputs to the risk analysis but not part of the inspection plan structure itself.
Reference: API 580, 2nd Edition (2016), Section 12.3 and Output (Inspection Plan)
NEW QUESTION # 57
Process used to compare the estimated risk against given risk criteria to determine the significance of the risk.
- A. Risk estimation
- B. Risk identification
- C. Risk evaluation
Answer: C
NEW QUESTION # 58
Once a credible damage mechanism(s) has been identified, the associated failure mode should also be identified. An example of a failure mode is:
- A. general corrosion
- B. embrittlement
- C. rupture
- D. stress corrosion cracking
Answer: C
Explanation:
According to Section 8.3 of API 580:
"Once a credible damage mechanism(s) has been identified the associated failure mode should also be identified... Examples of failure modes include the following:
a) pinhole leak
b) small to moderate leak
c) large leak
d) ductile rupture
e) brittle fracture."
Rupture is clearly listed as a type of failure mode. In contrast:
Stress corrosion cracking (B), general corrosion (C), and embrittlement (D) are damage mechanisms, not failure modes.
Reference: API 580, 2nd Edition (2016), Section 8.3 - Failure Modes
NEW QUESTION # 59
Depending on factors such as the remaining life of the equipment and the type of damage mechanism, risk management through inspection:
- A. is the least cost-effective.
- B. is most effective in reducing risk.
- C. may have little or no effect.
- D. results in a decrease in inspection frequencies.
Answer: C
Explanation:
API 580, Section 12.4 states:
"Depending on factors such as the remaining life of the equipment and type of damage mechanism, risk management through inspection may have little or no effect." Examples include:
Instantaneous failures
Equipment at end of life
Damage mechanisms not detectable through inspection
Reference: API 580, 2nd Edition (2016), Section 12.4
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NEW QUESTION # 60
Which of the following are essential elements of an RBI program? (Select all that apply)
- A. Documented method of determining failure probability and consequence
- B. Process hazard analysis to verify the adequacy of process safety
- C. Management system for maintaining documentation and analysis updates
- D. Management system for personnel qualifications
Answer: A,C,D
Explanation:
According to API 580, a complete and effective RBI program should include several essential elements to ensure it is systematic, repeatable, and technically sound. Section 5.2 of API 580 outlines the key components:
* "A management system for personnel qualifications" - Personnel involved in RBI must be competent and qualified for their roles.
* "A documented and validated methodology for assessing PoF and CoF" - A formal process is required to ensure the reliability of the analysis.
* "A management system for documentation and update of RBI assessments" - Records must be controlled, updated regularly, and traceable.
These three components are explicitly defined in API 580 as essential elements.
On the other hand:
* "Process hazard analysis to verify the adequacy of process safety" is important in the broader context of process safety management but is not listed as a required element of an RBI program in API 580. It is typically part of PSM frameworks under OSHA or similar, not RBI-specific.
Reference: API 580, 2nd Edition (2016), Section 5.2 - Elements of an RBI Program
NEW QUESTION # 61
Conducting more internal inspection than is called for by RBI:
- A. may cause additional deterioration and risk.
- B. will produce further risk reduction.
- C. can result in inspection optimization.
- D. reduces risk to the lowest practical level.
Answer: A
Explanation:
API 580, Section 12.4 and 12.6 emphasize that inspection should be optimized and risk-focused. Excessive inspections can increase exposure to damage mechanisms (such as mechanical or corrosion risks introduced during inspection activities), especially if not needed.
From Section 12.4:
"Organizations should be deliberate and systematic in assigning the level of risk management achieved through inspection and should be cautious not to assume that there is an unending capacity for risk management through inspection." Further, in risk-optimization contexts (Section 12.5):
"While there is a potential for reduction of inspection costs through utilization of RBI, increased equipment integrity and inspection cost optimization should remain the focus." Therefore, excess inspections may be:
Unjustified
Economically wasteful
Risk-enhancing (e.g., opening equipment unnecessarily may lead to deterioration) Reference: API 580, 2nd Edition (2016), Sections 12.4 and 12.6
NEW QUESTION # 62
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