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| Section | Objectives |
|---|---|
| Risk-Based Process Safety (RBPS) Framework | - Management Review and Continuous Improvement - Management of Change - Incident Investigation - Process Knowledge Management - Training and Performance Assurance - Contractor Management - Safe Work Practices - Hazard Identification and Risk Analysis - Conduct of Operations - Metrics and Performance Measurement - Auditing - Operating Procedures - Compliance with Standards - Asset Integrity and Reliability - Process Safety Culture - Emergency Management - Operational Readiness |
>> Examcollection CCPSC Questions Answers <<
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NEW QUESTION # 34
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)
Answer: A,B
Explanation:
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.
NEW QUESTION # 35
Which of the following factors affect the ability of a Safety Relief Valve to provide the required overpressure protection on a vessel? (Select all that apply)
Answer: A,D,E
Explanation:
The correct answers are B, D, and E because these factors directly influence the performance, reliability, and capacity of a Safety Relief Valve (SRV), as emphasized in CCPS Mechanical Integrity and pressure relief system design guidance.
B (inlet and outlet piping design) is critical. Improper inlet piping can cause excessive pressure drop, leading to valve instability or chatter, while poorly designed discharge piping can create backpressure that reduces relieving capacity. CCPS stresses that piping design must meet strict criteria to ensure the valve functions as intended.
D (material of construction) affects the valve's ability to withstand process conditions such as corrosion, temperature, and chemical compatibility. Incorrect materials can lead to sticking, leakage, or failure to open at the set pressure.
E (boiling point and temperature of contents) are essential for determining the relieving scenario and required capacity . These properties influence whether the relief is vapor, liquid, or two-phase flow, which directly affects sizing and performance.
Option A (toxicity) does not affect the mechanical ability of the valve to relieve pressure-it is relevant for consequence analysis, not valve function. C (wind conditions) impacts dispersion after discharge, not the valve's ability to provide overpressure protection.
CCPS highlights that proper design, installation, and material selection are crucial to ensure reliable pressure relief performance.
NEW QUESTION # 36
A principal rule of HAZOP is: "The more participants in the room, the more effective the exercise will be".
True or false?
Answer: B
Explanation:
The correct answer is B (False) because CCPS guidance on HAZOP (Hazard and Operability Study) emphasizes that effectiveness depends on having the right participants, not the maximum number of participants .
A HAZOP team should be multidisciplinary , typically including process engineers, operators, maintenance personnel, control/instrumentation specialists, and a trained facilitator. However, adding too many participants can actually reduce effectiveness by making discussions less focused, harder to manage, and more time-consuming.
CCPS highlights that an optimal team size is usually small enough to be manageable (often 5-8 members) while still providing the necessary expertise. Large groups can lead to issues such as reduced participation, difficulty in reaching consensus, and inefficient use of time.
The key principle is quality over quantity -participants should be selected based on their knowledge, experience, and ability to contribute meaningfully to hazard identification and analysis.
Therefore, the statement is false because simply increasing the number of participants does not improve the quality of the HAZOP. A well-structured, properly facilitated team with the right expertise is far more important for an effective hazard analysis.
NEW QUESTION # 37
The Risk Based Process Safety element which is designed to verify that a process is verified safe to start after a short term shutdown is Operational Readiness. True or False?
Answer: B
Explanation:
The correct answer is B (False) because Operational Readiness in CCPS Risk-Based Process Safety is primarily intended for new startups, major modifications, or significant changes , not routine or short-term shutdowns.
Operational Readiness (often implemented as a Pre-Startup Safety Review - PSSR ) ensures that systems are properly designed, installed, tested, and safe to operate before initial startup or restart after major changes . It verifies that procedures, training, safeguards, and documentation are in place and that risks introduced by changes have been addressed.
For short-term or routine shutdowns , safety verification is typically managed through Operating Procedures and Safe Work Practices , such as startup checklists, shift handover processes, and standard operating procedures. These ensure that equipment is in the correct condition and that it is safe to resume operation without requiring a full Operational Readiness review.
CCPS distinguishes between routine operational control and formal readiness reviews for significant risk changes . Applying Operational Readiness to every short-term shutdown would be impractical and unnecessary.
Therefore, while verifying safe startup is essential, Operational Readiness is not specifically intended for short-term shutdown situations , making the statement false.
NEW QUESTION # 38
A combined pressure/vacuum inerting procedure is being used to reduce oxygen in a vessel prior to introducing a flammable gas. Which of the following statements is correct?
Answer: B
Explanation:
The correct answer is A because applying vacuum first is more efficient and reduces the amount of inert gas required , as explained in CCPS guidance on inerting and purging methods.
In a vacuum-first approach , a portion of the vessel's original gas (containing oxygen) is removed before introducing nitrogen. This immediately lowers the oxygen concentration without consuming inert gas. When nitrogen is subsequently added, it starts from a lower oxygen baseline, meaning fewer purge cycles and less total nitrogen are required to reach the target oxygen concentration.
In contrast, if pressure purging is applied first , nitrogen is added to a vessel still filled with air, and oxygen reduction occurs through dilution. This requires more nitrogen , since each cycle only partially reduces oxygen concentration.
Option C is incorrect because the sequence does affect efficiency, and B is incorrect because pressure-first is less efficient.
CCPS emphasizes that combined vacuum/pressure purging is the most efficient inerting method , but the sequence matters. Starting with vacuum maximizes oxygen removal before dilution, minimizing inert gas consumption and improving operational efficiency, especially for large vessels.
NEW QUESTION # 39
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