無料提供されるAPI-580問題集とAPI-580リアル試験問題
API API-580実際の問題とブレーン問題集
API API-580 認定試験の出題範囲：
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質問 # 17
Following are the common mechanical deterioration mechanisms except
- A. Stress/creep rupture
- B. Intergranular corrosion
- C. Fatigue
- D. Tensile overload
正解：B
質問 # 18
Risk presented in qualitative risk analysis as
- A. Form of risk matrix
- B. Precise numeric value
- C. Form of event tree and fault tree
正解：A
質問 # 19
Which of the following is the act of mitigating a particular risk?
- A. Risk assessment
- B. Risk determination
- C. Risk reduction
- D. Risk management
正解：C
解説：
API 580, Section 4.2 defines risk reduction as:
"Risk reduction is the act of mitigating a known risk that is deemed to be too high to a lower, more acceptable level of risk with some form of risk reduction activity." Risk assessment and risk determination involve identifying and evaluating risk.
Risk management is the broader process that may or may not involve mitigation.
Reference: API 580, 2nd Edition (2016), Section 4.2 - Risk Management and Risk Reduction
質問 # 20
______________ provides a consistent methodology for assessing the optimum combination of methods and
frequencies.
- A. REM
- B. HAZOP
- C. PHA
- D. RBI
正解：D
質問 # 21
Outcome of an event
- A. Event
- B. Risk
- C. Consequence
正解：C
質問 # 22
Which of the following is a step in estimating the consequences of releasing a hazardous material into the surrounding environment?
- A. Estimating the release rate
- B. Determining the deterioration susceptibility and rate
- C. Identifying the most likely failure mode
- D. Identifying active and credible damage mechanisms
正解：A
解説：
According to API 580, Section 10.6.1:
"The consequences of releasing a hazardous material can be estimated in six steps...
a) estimate the release rate;
b) estimate total volume of fluid...
c) determine if the fluid disperses..."
Therefore, "Estimating the release rate" is the first step in the consequence evaluation process and is essential for modeling potential impact scenarios.
Reference: API 580, 2nd Edition (2016), Section 10.6.1 - Determination of COF
質問 # 23
The ability to state the rate of deterioration precisely is affected by the following except
- A. By equipment complexity
- B. Lack of coverage of an area subject to deterioration
- C. Inaccessibility for inspection, limitations of inspection and test methods
- D. Type of deterioration mechanism, process and metallurgical variations
- E. None of the above
正解：C
質問 # 24
Process to find, list, and characterize elements of risk
- A. Risk estimation
- B. Risk identification
- C. Risk evaluation
正解：B
質問 # 25
Following are the critical variables for deterioration mechanism except
- A. Material of construction
- B. Start up and shut down conditions
- C. Insulation
- D. Process operating
正解：C
質問 # 26
____________ are often necessary to establish susceptibility of equipment to stress corrosion cracking.
- A. Fluid toxicity and its constituents
- B. Damage mechanisms
- C. Cracking mechanisms
- D. Literature, expert opinion and experience
正解：D
質問 # 27
Which of the following codes provide requirements and limitations for implementing RBI programs? (Select all that apply)
- A. API 510
- B. API 653
- C. API 570
- D. API 573
- E. API 578
正解：A、B、C
解説：
According to API 580, multiple API inspection codes include provisions for RBI. Section 4.3 of API 580 clearly states:
"The RBI methodology is recognized in the API inspection codes - API 510, API 570, and API 653 - as an acceptable method to determine inspection intervals." Each of these codes outlines both the requirements and limitations for using RBI in their specific contexts:
* API 510 - for pressure vessels
* API 570 - for piping systems
* API 653 - for aboveground storage tanks
On the other hand:
* API 573 is a recommended practice for the inspection of fired heaters and does not include formal RBI provisions.
* API 578 focuses on Positive Material Identification (PMI) and is unrelated to RBI methodologies or requirements.
Therefore, the correct selection includes:
##API 510
##API 570
##API 653
Reference: API 580, 2nd Edition (2016), Section 4.3
質問 # 28
At the conclusion of the initial planning portion for the development of the RBI program, which of the following important issues should have been completed?
- A. Collection of the necessary data to be analyzed during the assessment
- B. Request for resources to complete the analysis (not including implementation)
- C. Designation of needed team members
- D. Identification of the physical boundaries
正解：D
解説：
API 580, Section 6.1 and 6.2 clearly states:
"At the conclusion of the planning portion of the development of the RBI program the following should have been completed:
b) identify the physical boundaries;
c) identify the operating boundaries..."
Thus, one of the primary deliverables of the planning stage is defining boundaries to scope the risk evaluation.
Reference: API 580, 2nd Edition (2016), Section 6.2 - Establishing Objectives and Goals of an RBI Assessment
質問 # 29
Other functional failures are usually covered within
- A. Hazop
- B. Rbi
- C. Pha
- D. Rcm
正解：D
質問 # 30
An analytical tool that organizes and characterizes potential accidents in a logical and graphical manner
- A. Consequence
- B. Event
- C. Outcome
- D. Event tree
正解：D
質問 # 31
On a risk plot or matrix, risk thresholds generally divide:
- A. regions of constant risk.
- B. various levels of probability of failure.
- C. various levels of consequence of failure.
- D. regions of acceptable and unacceptable risk.
正解：D
解説：
Per Section 11.7 of API 580:
"Thresholds that divide the risk plot matrix or table into acceptable and unacceptable regions of risk can be developed. Corporate safety and financial policies and constraints or risk criteria influence the placement of the thresholds." This confirms that risk thresholds define boundaries between acceptable and unacceptable regions, not simply levels of consequence or probability.
Reference: API 580, 2nd Edition (2016), Section 11.7
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質問 # 32
Loss of containment is
- A. B&C
- B. Risk related to containers
- C. Container loss at the port authority
- D. Loss of fluid to the external environment
正解：D
解説：
Explanation
質問 # 33
The amount and type of codes and standards used by a facility can have
- A. No impact on rbi results
- B. Less significant impact on rbi results
- C. Significant impact on rbi results
正解：C
質問 # 34
A physical condition or a release of a hazardous material that could result from componentfailure and result in human injury or death, loss or damage,or environ- mental degradation
- A. Loss
- B. Hazard
- C. Failure
正解：B
質問 # 35
_________________curves are referred for the deterioration mechanism for carbon and low ally steel
materials.
- A. Schmidt curves for sulfide corrosion
- B. PH concentration curves
- C. Nelson curves
正解：C
質問 # 36
The reduction in the ability of a component to provide its intended purpose of containment of Fluids
- A. Degradation
- B. Damage
- C. Deterioration
- D. Thinning
正解：C
質問 # 37
Probability of failure is typically expressed in terms of:
- A. frequency
- B. deterioration rate
- C. undesirable events
- D. time
正解：A
解説：
As per Section 9.2 of API 580:
"POF is typically expressed in terms of frequency. Frequency is expressed as a number of events occurring during a specific timeframe." Further clarified in the same section:
"For probability analysis, the timeframe is typically expressed as a fixed interval (e.g. one year) and the frequency is expressed as events per interval (e.g. 0.0002 failures per year)." This confirms thatfrequencyis the correct term used to express probability of failure in RBI. Other options like deterioration rate or time are influencing factors but not the standard unit of expression.
Reference:API 580, 2nd Edition (2016), Section 9.2
質問 # 38
Which of the following statements is generally correct with regard to qualitative RBI analysis using a broad range of data?
- A. It is generally improved by utilizing numeric data.
- B. It requires a high-level of judgment, skill, and understanding.
- C. It generally results in lower accuracy analysis.
- D. It does not require a high level of accuracy and precision in the data.
正解：B
解説：
API 580 Section 7.2.2 states:
"Generally a qualitative analysis using broad ranges requires a higher level of judgment, skill, and understanding from the user than a more quantitative approach." This confirms that qualitative methods require more professional judgment even though they are simpler in format. It is not simply about using less accurate or numeric data but about the user's expertise.
Reference: API 580, 2nd Edition (2016), Section 7.2.2
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質問 # 39
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