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| Section | Objectives |
|---|---|
| Topic 1: Risk-Based Process Safety (RBPS) Framework | - Conduct of Operations - Process Knowledge Management - Process Safety Culture - Auditing - Metrics and Performance Measurement - Operational Readiness - Emergency Management - Management of Change - Training and Performance Assurance - Safe Work Practices - Compliance with Standards - Asset Integrity and Reliability - Contractor Management - Hazard Identification and Risk Analysis - Incident Investigation - Operating Procedures - Management Review and Continuous Improvement |
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問題 #102
Discuss the advantages and disadvantages of using competent third-party auditors for facility process safety audits.
答案：A
解題說明：
The correct answer is B because CCPS recognizes both benefits and limitations of using competent third- party auditors within the Process Safety Auditing element of RBPS.
A primary advantage is independence and objectivity . Third-party auditors are not influenced by internal organizational culture, familiarity, or bias, making them more likely to identify systemic weaknesses, normalization of deviance, and overlooked risks . CCPS highlights that this independence enhances credibility
, especially with regulators and external stakeholders. Additionally, external auditors often bring broad industry experience and benchmarking insights , allowing facilities to compare practices against recognized good engineering practices (RAGAGEP).
However, there are also disadvantages. Third-party auditors may have limited familiarity with site-specific processes, equipment, and organizational nuances , which can lead to misunderstandings or less practical recommendations. They can also be costly , particularly for smaller organizations. Furthermore, their presence may sometimes affect workforce openness during interviews.
CCPS emphasizes that the most effective audit approach often involves a balance , combining external auditors for independence and internal personnel for site knowledge. This ensures audits are both objective and practically relevant , leading to more actionable and meaningful improvements in process safety performance.
問題 #103
Lagging indicators include: (select all that apply)
答案：B,C
解題說明：
The correct answers are C and D because lagging indicators measure events that have already occurred , particularly those involving loss of containment or failures with consequences.
Option C (hazardous material releases) is a classic lagging indicator. It reflects an actual failure of containment and is a key metric used in process safety performance (e.g., Tier 1 and Tier 2 events per CCPS
/ANSI/API RP 754).
Option D (spills inside secondary containment) is also a lagging indicator. Although the spill may be contained and less severe, it still represents a loss of primary containment , meaning an incident has already occurred.
Option A (management system failures) and E (missed inspections) are leading indicators because they identify weaknesses in systems before incidents occur . Option B (interlock activations) is generally considered a leading or near-miss indicator , signaling that safeguards are being challenged but have not yet failed.
CCPS emphasizes that lagging indicators are important for tracking outcomes and learning from failures , while leading indicators are used to proactively prevent incidents . A strong process safety program uses both types to ensure continuous improvement and risk reduction.
問題 #104
Static Electricity accumulation could be a concern with which of the following fluids? (Select all that apply)
答案：A,C,D
解題說明：
The correct answers are B (Hexane), C (Benzene), and D (Toluene) because these are low-conductivity hydrocarbon liquids , which are highly susceptible to static electricity accumulation .
CCPS guidance explains that static charge buildup occurs when fluids flow, splash, or are agitated- especially in non-conductive or poorly conductive liquids . Hydrocarbons such as hexane, benzene, and toluene have low electrical conductivity , meaning that any generated static charge cannot dissipate easily .
This can lead to charge accumulation and eventual discharge (spark), which may ignite flammable vapor-air mixtures.
In contrast, sea water (A) is highly conductive due to dissolved salts, allowing static charges to dissipate quickly and preventing dangerous accumulation. Therefore, static electricity is generally not a concern with conductive fluids like seawater.
CCPS emphasizes that static hazards are particularly important during operations such as tank filling, transfer, filtration, and mixing of flammable liquids. Proper controls include bonding and grounding, limiting flow velocities, avoiding splash filling, and using anti-static additives where applicable.
Thus, non-conductive flammable liquids (B, C, D) present a significant static ignition hazard, while conductive liquids like seawater do not.
問題 #105
A material had been oxidized many times, without incident, under an oxygen atmosphere in a small pilot plant vessel. While scaling up to a larger vessel, the plant engineers decided they could improve gas/liquid contact by using a more efficient feed dispersing system. This dispersing system filled the reactor ' s vapor space with a fine combustible mist. Several hours after startup, the vessel was ruptured by an internal mist explosion. The source of ignition was a small amount of catalyst left over from an earlier set of experiments. This was a phenomenon that the engineers had not considered. Which of the following risk based process safety elements could have helped prevent this incident? (Select all that apply)
答案：B,C
解題說明：
The correct answers are B (Management of Change) and D (Process Knowledge Management) because this incident was caused by unrecognized hazards introduced during scale-up and process modification .
Option B (Management of Change - MOC) is critical because the engineers introduced a new feed dispersing system , which significantly altered the process by creating a combustible mist in the vapor space . According to CCPS, any change in equipment, process conditions, or technology must undergo a formal MOC review to identify new hazards, evaluate risks, and implement safeguards before startup. A proper MOC would likely have identified the explosion risk associated with mist formation in an oxygen-rich environment.
Option D (Process Knowledge Management - PKM) is also essential because the hazard resulted from insufficient understanding of the process chemistry and physical behavior , particularly mist explosibility and catalyst ignition potential. PKM ensures that organizations maintain accurate knowledge of chemical reactivity, flammability limits, and scale-up effects.
Options A , C , and E are not directly related to preventing this type of incident. Measurement and metrics track performance, contractor management is irrelevant here, and emergency management focuses on response rather than prevention.
This scenario highlights how scale-up changes can introduce new hazards , requiring both strong MOC and robust process knowledge.
問題 #106
Development and documentation of information about the equipment and chemicals is most closely related to which risk based process safety element?
答案：C
解題說明：
The correct answer is B. Process Knowledge Management (PKM) because this RBPS element specifically focuses on the development, documentation, maintenance, and accessibility of process safety information .
According to CCPS, PKM ensures that accurate and up-to-date information about chemicals, process technology, and equipment design is available throughout the lifecycle of a facility. This includes material safety data, process flow diagrams (PFDs), piping and instrumentation diagrams (P & IDs), equipment specifications, and safe operating limits.
The question explicitly refers to "development and documentation of information," which directly aligns with PKM responsibilities. Without proper process knowledge, organizations cannot effectively perform hazard analysis, operate safely, or manage changes.
Option A (Hazard Identification and Risk Analysis) uses this information but does not focus on creating or maintaining it. Option C (Process Safety Competence) relates to ensuring personnel have the skills and training needed, not managing technical documentation. Option D (Compliance with Standards) involves adhering to codes and regulations, but again does not specifically address building and maintaining process safety information.
Thus, PKM is the foundational RBPS element that supports many others by ensuring accurate, complete, and current technical knowledge is available for safe decision-making.
問題 #107
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