Safety & Risk Management Flashcards
7 cards from real API 510 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety & Risk Management flashcards as text
In Risk-Based Inspection (RBI) methodology, the risk matrix combines probability of failure (POF) with which other factor?
Answer: Consequence of failure (COF)
RBI risk is defined as the product of probability of failure (POF) and consequence of failure (COF), forming the basis of the risk matrix.
Under API 510, when using RBI to set inspection intervals, the maximum allowable inspection interval for pressure vessels in highly corrosive service is governed by which standard?
Answer: API 510 Section 6
API 510 Section 6 establishes the rules for inspection intervals, even when RBI methodologies per API 580/581 are used to justify extended intervals.
A pressure vessel has a remaining corrosion allowance of 0.125 in. and a measured corrosion rate of 0.025 in./year. What is the estimated remaining life?
Answer: 5 years
Remaining life = remaining corrosion allowance ÷ corrosion rate = 0.125 ÷ 0.025 = 5 years.
In a Hazard and Operability (HAZOP) study, the term 'deviation' refers to:
Answer: A departure from the design intent identified using guide words
In HAZOP, deviations are departures from design intent systematically identified by applying guide words (e.g., No, More, Less, Reverse) to process parameters.
Which API standard provides the foundation for Risk-Based Inspection (RBI) methodology used in conjunction with API 510?
Answer: API 580 and API 581
API 580 provides the RBI framework principles and API 581 provides the quantitative risk-based inspection methodology used alongside API 510.
When consequence of failure (COF) in an RBI assessment includes a 'flammable fluid' scenario, inspectors must consider:
Answer: Flash point, auto-ignition temperature, and inventory size
Flammable COF calculations require flash point, auto-ignition temperature, and fluid inventory to estimate fire/explosion hazard magnitude.
According to API 510, the 'next inspection date' for an internal inspection must not exceed half the remaining corrosion life or the maximum interval, whichever is:
Answer: Shorter
API 510 requires the next inspection date to be the shorter of half the remaining life or the maximum allowable inspection interval, ensuring conservative scheduling.