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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Incident Investigation and Learning | 15% | - Learning and Improvement
|
| Topic 2: Hazard Identification and Risk Analysis | 25% | - Hazard Assessment Methods
|
| Topic 3: Measurement, Audit, and Continuous Improvement | 15% | - Audit and Assessment
|
| Topic 4: Process Safety Management Systems | 30% | - Operating Procedures and Safe Work Practices
|
| Topic 5: Risk Based Process Safety (RBPS) Fundamentals | 15% | - Process Safety Culture
|
有益な取引を行うだけでなく、AIChEユーザーがCCPSC証明書を取得するまでの最短時間で試験に合格できるようにしたいと考えています。 CCPSC試験のプラクティスを選択すると、Xhs1991試験の準備に20〜30時間しかかかりません。 CCPSCの学習教材は試験の概要とCCPSCガイドの質問の質問に密接に関連しているため、このような短い時間ですべてのコンテンツを終了できるかどうかを尋ねる場合があります。 最新の基本的なCCPS Process Safety Professional Certification知識に関連しています。 CCPSC試験問題に合格した場合のみ、CCPSC試験に合格します。
質問 # 44
The photo below represents part of the overhead piping for a reactor with a 90 psig maximum allowable working pressure (MAWP). Which of the following statements are correct? (select all that apply)
正解：B、C
解説：
The correct answers are B and D because they highlight subtle but critical deficiencies in the pressure relief system configuration , consistent with CCPS guidance.
Option B is correct because the presence of additional components (such as a pressure gauge connection or trapped pressure between the rupture disc and relief valve) can lead to pressure buildup on the downstream side of the rupture disc . This backpressure increases the effective burst pressure , meaning the disc may not rupture at its intended setpoint, thereby compromising overpressure protection.
Option D is also correct because if the rupture disc is intended to protect the relief valve from corrosion , any leakage, improper installation, or pressure buildup in the space between the disc and valve can negate that protection . For example, corrosive process fluid could still reach the relief valve if the disc is not perfectly leak-tight or if the system is not properly maintained.
Option A is incorrect because current operating pressure does not guarantee safety- relief systems must function correctly during upset conditions . Option C is incorrect because placing a rupture disc upstream of a relief valve is an accepted practice when properly designed.
CCPS emphasizes that improper installation details can significantly degrade relief system performance , even when components appear correct.
質問 # 45
The XYZ Corporation decides to track an activity as shown in the diagram. They interpret the results to indicate a possible deteriorating performance in one of their process safety management elements.
正解：
解説：
Workforce Involvement
Explanation:
The correct answer is Workforce Involvement because the chart tracks the number of industry group meetings at which company presenters shared significant lessons learned , and the trend is clearly declining over time .
This metric reflects how actively personnel are engaging externally, sharing knowledge, and contributing to industry learning , which are key aspects of workforce involvement. A decreasing trend suggests reduced participation, knowledge sharing, and engagement-indicating potential weakening in this element.
While Measurement and Metrics is involved in tracking the data, it is not the element being degraded-it is simply the tool used to identify the issue. The underlying concern is behavioral and engagement-related, which aligns with Workforce Involvement.
This activity also touches on learning culture, but within CCPS RBPS, active participation, sharing lessons learned, and engagement in industry forums are core indicators of a strong Workforce Involvement element.
A decline in such participation may signal:
Reduced emphasis on learning from others
Lower employee engagement
Weakening process safety culture
CCPS stresses that strong organizations promote active knowledge sharing internally and externally , making this trend a meaningful leading indicator of declining workforce involvement.
質問 # 46
For flashing liquids:
正解：C
解説：
The correct answer is C because flashing of liquids is fundamentally an energy-driven thermodynamic process
, as described in CCPS consequence analysis and dispersion modeling guidance. When a pressurized liquid is suddenly released to a lower pressure, a portion of the liquid rapidly vaporizes (flashes). The energy required for this phase change comes from the internal energy (enthalpy) of the liquid itself , not from an external heat source.
As the liquid flashes, it cools because energy is consumed in vaporization. The fraction that flashes depends on factors such as initial temperature, pressure, heat capacity, and latent heat of vaporization-not fixed percentages.
Option A and B are incorrect because the fraction flashed is not constant ; it can vary widely depending on thermodynamic conditions.
Option D is incorrect because flashing is actually more likely when a liquid is above its normal boiling point under pressure . When pressure is suddenly reduced, the liquid is in a superheated state and can rapidly flash.
CCPS emphasizes understanding flashing behavior in hazard analysis because it significantly affects release rates, vapor cloud formation, and potential consequences such as toxic exposure or vapor cloud explosions.
質問 # 47
When you comply with applicable regulatory standards you can be confident your plant is safe to operate.
True or False?
正解：A
解説：
The correct answer is B (False) because compliance with regulatory standards represents only a minimum baseline , not a guarantee of safe operation.
CCPS strongly emphasizes that regulatory compliance alone is insufficient to ensure process safety.
Regulations are typically lagging, generalized, and not specific to every facility's unique hazards and risks .
They establish minimum requirements, but they do not account for all possible failure scenarios, human factors, or site-specific complexities.
True process safety excellence requires a risk-based approach , where organizations go beyond compliance to identify, assess, and manage hazards proactively. This includes implementing robust systems such as Hazard Identification and Risk Analysis (HIRA), Management of Change (MOC), Mechanical Integrity, and strong safety culture practices .
Many major industrial incidents have occurred at facilities that were technically in compliance with regulations, demonstrating that compliance does not eliminate risk. CCPS promotes the concept that organizations must strive for continuous improvement and operational discipline , rather than simply meeting regulatory requirements.
Therefore, while compliance is necessary, it is not sufficient , and relying solely on it can create a false sense of security.
質問 # 48
For a vapor explosion in an unconfined and uncongested area, the amount of thermodynamic energy that ends up in the overpressure is approximately:
正解：B
解説：
The correct answer is D (2-5%) because, according to CCPS guidance on vapor cloud explosions (VCEs) , only a small fraction of the total thermodynamic energy released during combustion is converted into blast overpressure in unconfined and uncongested conditions.
In such scenarios, the combustion process occurs relatively slowly (deflagration rather than detonation), and much of the energy is dissipated as heat, light, and expansion of gases , rather than contributing to pressure waves. As a result, only about 2-5% of the total energy is typically available to generate damaging overpressure effects.
Higher energy conversion efficiencies (such as 10% or more) are generally associated with congested or confined environments , where obstacles (pipes, equipment, structures) promote turbulence and flame acceleration, significantly increasing overpressure. In contrast, an open and uncongested area limits turbulence, reducing explosion severity.
Options A , B , and C significantly overestimate the fraction of energy contributing to blast effects, while E (0%) is incorrect because some overpressure is always generated.
CCPS emphasizes understanding explosion efficiency when performing consequence analysis, as it is a key factor in predicting blast damage and designing appropriate safeguards.
質問 # 49
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