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| Section | Weight | Objectives |
|---|---|---|
| Risk Assessment and Analysis | 20-25% | - Hazard Identification (HAZID) - Hazard and Operability Analysis (HAZOP) - Quantitative Risk Assessment (QRA) - Fault Tree Analysis (FTA) - Bow-Tie Analysis - Layer of Protection Analysis (LOPA) - Event Tree Analysis (ETA) |
| Regulatory Compliance and Auditing | 5-10% | - EPA RMP Regulations - Compliance Verification Methods - Process Safety Auditing Techniques - OSHA PSM Requirements - International Process Safety Standards |
| Management of Change (MOC) | 8-12% | - Personnel and Organizational Changes - MOC Process Requirements - Temporary vs. Permanent Changes - Technical Review and Risk Assessment |
| Process Safety Management Systems | 15-20% | - Elements of PSM Systems - Policy and Strategic Planning - Continuous Improvement Frameworks - Management Leadership and Commitment |
| Process Safety Engineering Fundamentals | 15-20% | - Chemical Process Safety Fundamentals - Thermodynamics and Reaction Hazards - Fire and Explosion Dynamics - Toxicology and Exposure Assessment - Equipment Design and Integrity |
| Emergency Planning and Response | 5-10% | - Inherently Safer Design Principles - Containment and Mitigation Barriers - Safety Instrumented Systems (SIS) - Emergency Response Planning |
| Incident Investigation and Learning | 10-15% | - Lessons Learned and Knowledge Management - Trending and Performance Metrics - Incident Classification and Severity - Investigation Report Development - Root Cause Analysis Methods |
| Operating Procedures and Practices | 10-15% | - Permit-to-Work Systems - Safe Work Practices - Startup and Shutdown Procedures - Standard Operating Procedures (SOPs) - Operations Training and Competency |
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問題 #27
Asset Integrity inspection/test methods for tubes in shell and tube heat exchangers include (select all that apply):
答案：A,D
解題說明：
The correct answers are A (Borescope) and C (Hydrostatic test) because these are commonly accepted and practical methods for inspecting the condition and integrity of heat exchanger tubes under the Mechanical Integrity element of RBPS.
Borescope inspection (A) allows direct visual examination of the internal surfaces of tubes. It is particularly useful for identifying corrosion, fouling, pitting, cracking, and blockages . CCPS recognizes visual inspection tools as important non-destructive examination (NDE) techniques for assessing internal equipment condition.
Hydrostatic testing (C) is used to verify the pressure integrity and leak tightness of the exchanger tubes. By pressurizing the system with a liquid, operators can detect leaks or weaknesses that could lead to failure during operation.
Option B (Dye injection) is not a standard or recognized method for internal tube inspection in heat exchangers. While dye penetrant testing exists, it is typically used on surfaces-not for internal tube integrity in this context.
Option D (Radiography) is generally impractical for inspecting individual tubes in shell-and-tube exchangers due to geometry, access limitations, and effectiveness concerns.
CCPS emphasizes selecting appropriate, proven inspection techniques that effectively assess degradation mechanisms and ensure continued safe operation of critical equipment.
問題 #28
Workforce Involvement element activities that an operator can participate in can include (select all that apply):
答案：A,B,C
解題說明：
The correct answers are B, C, and D because CCPS emphasizes that Workforce Involvement includes engaging operators in activities where their practical knowledge and experience improve process safety systems .
Option B is correct because operators can contribute to the design and improvement of refresher training programs . Their real-world experience helps ensure that training is relevant, practical, and focused on actual operating challenges.
Option C is also correct because operators are often best positioned to review operating procedures for accuracy and usability . They can identify unclear instructions, missing steps, or impractical guidance, improving procedural quality and reducing human error.
Option D is correct because operators may participate in audits , providing insights into how procedures and systems are implemented in practice. Their involvement enhances audit effectiveness by incorporating frontline perspectives.
Option A is incorrect because sizing pressure relief devices is a specialized engineering task requiring technical design expertise beyond typical operator responsibilities.
CCPS highlights that workforce involvement should leverage frontline knowledge , improve system design, and foster ownership of process safety, while ensuring that technical tasks remain with appropriately qualified personnel.
問題 #29
When should worker refresher training be done? (select all that apply)
答案：B,C,D,E
解題說明：
The correct answers are B, C, D, and E because CCPS emphasizes that refresher training must be risk-based, need-driven, and triggered by specific conditions , rather than convenience.
Option B is correct because regulatory requirements often mandate periodic refresher training , ensuring compliance and maintaining competency.
Option C is critical because refresher training should be provided whenever there is a recognized gap in knowledge or skills . This aligns with CCPS's focus on maintaining workforce competency and preventing human error.
Option D is also correct because audits may identify deficiencies in knowledge, performance, or program implementation , triggering the need for additional training.
Option E is correct because any process change (via MOC) may introduce new hazards or operating conditions, requiring updated training before implementation.
Option A is incorrect because training should not be scheduled based on convenience or production priorities.
CCPS stresses that training is a safety-critical activity that must be prioritized based on risk and need.
Overall, refresher training is essential for ensuring that personnel remain competent, informed, and capable of operating safely under changing conditions .
問題 #30
A vessel has a rupture disc and pressure relief valve in series to protect against high pressure in the vessel.
There is a pressure gauge on the pipe between the rupture disc and the relief valve. The gauge normally reads zero. As part of regular maintenance inspections, these pressure gauges are supposed to be routinely checked.
Today, a pressure of nearly 50 psig (~3.5 barg) was observed by an operator. There is a significant hazard now. Identify the hazard and discuss which elements of Risk-Based Process Safety could have been involved in the development of this situation.
答案：A
解題說明：
The correct answer is B because a pressure reading between the rupture disc and relief valve-where it should normally be zero-indicates that the rupture disc has likely failed or is leaking . This creates a serious hazard because the pressure relief valve (PRV) may no longer function as intended , especially if backpressure builds up or if the system configuration compromises its ability to relieve safely. This condition can lead to loss of overpressure protection , increasing the risk of vessel rupture or explosion.
From a CCPS RBPS perspective, several elements are implicated. Mechanical Integrity is central, as the rupture disc may not have been properly inspected, maintained, or replaced. Operating Procedures and Training and Performance Assurance are also relevant, as operators must recognize abnormal readings and respond appropriately. Hazard Identification and Risk Analysis (HIRA) should have considered failure modes such as rupture disc leakage and its impact on relief system performance. Additionally, Management of Change (MOC) could be involved if modifications or replacements were made without proper review.
This scenario highlights how degradation or failure of protective devices, combined with gaps in multiple RBPS elements, can undermine critical safety layers and lead to potentially catastrophic consequences.
問題 #31
A 3000 gallon, stainless steel, insulated vessel rated for 30 psig is equipped with a rupture disc set for 30 psig for emergency relief. Assuming each of the following scenarios has been deemed possible, which would require the smallest sized relief?
答案：A
解題說明：
The correct answer is A because a pool fire scenario typically results in a slower and more predictable heat input compared to other overpressure scenarios, thus requiring a smaller relief capacity .
In CCPS guidance for relief system design and hazard analysis , different scenarios are evaluated based on how rapidly they generate vapor or pressure. A pool fire heats the vessel externally, causing liquid boiling and vapor generation at a rate governed by heat transfer. Although serious, this is generally a gradual energy input
, allowing for comparatively smaller relief sizing.
Option B (internal ignition) involves rapid combustion of vapor within the vessel, producing a very fast pressure rise , often too fast for conventional relief systems to handle effectively. This would require significantly larger or different protective measures.
Option C (runaway reaction) is the most severe scenario. A reaction with a temperature rise rate of 500°C/min indicates extremely rapid energy release, leading to very high vapor generation rates and pressure rise , requiring the largest relief capacity .
CCPS emphasizes that relief devices must be sized for the worst credible scenario , but when comparing scenarios, external fire cases typically produce the lowest required relief rates , while reactive and explosive scenarios demand much larger capacities.
問題 #32
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