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| Section | Weight | Objectives |
|---|---|---|
| Process Safety Management Systems | 15-20% | - Continuous Improvement Frameworks - Elements of PSM Systems - Policy and Strategic Planning - Management Leadership and Commitment |
| Regulatory Compliance and Auditing | 5-10% | - International Process Safety Standards - EPA RMP Regulations - Compliance Verification Methods - OSHA PSM Requirements - Process Safety Auditing Techniques |
| Process Safety Engineering Fundamentals | 15-20% | - Thermodynamics and Reaction Hazards - Equipment Design and Integrity - Chemical Process Safety Fundamentals - Fire and Explosion Dynamics - Toxicology and Exposure Assessment |
| Management of Change (MOC) | 8-12% | - Personnel and Organizational Changes - Temporary vs. Permanent Changes - Technical Review and Risk Assessment - MOC Process Requirements |
| Risk Assessment and Analysis | 20-25% | - Hazard and Operability Analysis (HAZOP) - Layer of Protection Analysis (LOPA) - Bow-Tie Analysis - Quantitative Risk Assessment (QRA) - Event Tree Analysis (ETA) - Fault Tree Analysis (FTA) - Hazard Identification (HAZID) |
| Operating Procedures and Practices | 10-15% | - Safe Work Practices - Standard Operating Procedures (SOPs) - Permit-to-Work Systems - Operations Training and Competency - Startup and Shutdown Procedures |
| Emergency Planning and Response | 5-10% | - Inherently Safer Design Principles - Emergency Response Planning - Containment and Mitigation Barriers - Safety Instrumented Systems (SIS) |
| Incident Investigation and Learning | 10-15% | - Trending and Performance Metrics - Incident Classification and Severity - Lessons Learned and Knowledge Management - Investigation Report Development - Root Cause Analysis Methods |
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問題 #85
The accumulation for a relief device is:
答案：D
解題說明：
The correct answer is C because accumulation is defined (per CCPS and industry standards such as ASME) as the pressure increase above the relief device set pressure, expressed as a percentage of the set pressure .
When a relief device (such as a safety valve or rupture disc) activates, the system pressure is allowed to rise above the set pressure during discharge. This temporary pressure increase is called accumulation . It reflects the system's ability to safely handle overpressure while the relief device is relieving excess energy or material.
Mathematically, accumulation is calculated as:
Option A is incorrect because accumulation is not referenced to MAWP. Option B describes pressure relative to MAWP, which is not the definition of accumulation. Option D is also incorrect because it mixes MAWP and set pressure improperly.
CCPS emphasizes understanding accumulation as part of pressure relief system design , ensuring that vessels can tolerate the maximum allowable accumulation (often 10% for single relief devices under many codes) without exceeding safe limits.
問題 #86
A strong Management of Change system should ensure that: (select all that apply)
答案：A,B,C,D
解題說明：
The correct answers are B, C, D, and E because these align directly with CCPS expectations for a robust Management of Change (MOC) system under Risk-Based Process Safety.
C (adequate safety and health evaluations) is fundamental to MOC. CCPS requires that all changes-whether in equipment, procedures, chemicals, or organization-be reviewed for potential process safety impacts before implementation.
D (updates to preventive maintenance requirements) is also essential. Changes can affect equipment reliability and degradation mechanisms, so inspection, testing, and maintenance programs must be updated accordingly to maintain asset integrity.
E (management of temporary changes) is a key CCPS requirement. Temporary changes must be tracked, reviewed, and either made permanent through full MOC or reverted by a defined expiration date to prevent them from becoming uncontrolled permanent conditions.
B (root causes identified) is indirectly relevant, as changes often arise from incident learnings, and MOC should incorporate lessons learned to prevent recurrence.
Option A is incorrect because emergency changes still require MOC controls , though they may follow an expedited process. CCPS clearly states that all changes must be managed to ensure risks are properly evaluated and controlled.
問題 #87
All three flammable gas detection alarms have indicated in the control room the presence of a flammable vapor in the containment area below a horizontal butane storage tank. The correct operator response to this emergency would include (select all that apply):
答案：B,C,D,E
解題說明：
The correct answers are A, B, D, and E because they reflect safe and appropriate emergency response actions aligned with CCPS guidance for handling flammable vapor releases.
Option A is critical because personnel must be evacuated immediately from areas where flammable gas is detected to prevent injury or fatality in case of ignition.
Option B is correct because isolating the source of the release (if it can be done remotely) helps stop or reduce the leak without exposing personnel to danger.
Option D is also appropriate because activating a deluge system can help disperse vapors and reduce ignition risk by cooling and diluting the flammable cloud.
Option E is correct because communication and escalation are essential parts of emergency management, ensuring proper coordination and response.
Option C is incorrect because sending personnel into a potentially flammable atmosphere is dangerous. CCPS strongly discourages exposing workers to hazardous conditions during an active release , especially when safer remote methods are available.
Overall, CCPS emphasizes protecting personnel first, controlling the hazard remotely, and using engineered safeguards , while avoiding unnecessary exposure during emergencies.
問題 #88
For flashing liquids:
答案：B
解題說明：
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.
問題 #89
Process Safety Competency is not involved with succession planning. True or False?
答案：A
解題說明：
The correct answer is B (False) because Process Safety Competency is directly linked to succession planning within CCPS Risk-Based Process Safety (RBPS) principles.
CCPS defines Process Safety Competency as ensuring that personnel have the knowledge, skills, and experience necessary to manage process safety risks effectively. A critical component of this is maintaining competency over time, which includes planning for retirements, promotions, and workforce turnover . This is where succession planning becomes essential.
Without proper succession planning, organizations risk losing critical institutional knowledge , especially in complex process industries where experience plays a key role in hazard recognition and safe decision-making.
CCPS emphasizes that companies must identify key roles affecting process safety and ensure that qualified personnel are available to fill these roles in the future.
Effective succession planning includes training, mentoring, knowledge transfer, and competency assessment to ensure continuity. It also helps prevent gaps in expertise that could lead to increased risk of incidents.
Therefore, Process Safety Competency is not only involved in succession planning-it is a fundamental aspect of sustaining long-term process safety performance and organizational resilience .
問題 #90
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