API 510 Inspection Planning and Scheduling 5

Question 1

When scheduling a pressure vessel inspection that requires entry, which prerequisite is mandated before an inspector enters the vessel?

Accepted Answer

Issuance of a confined space entry permit with atmospheric testing and lockout/tagout verification

Answer

Confined space entry permits require atmospheric testing for oxygen, combustibles, and toxics, along with lockout/tagout isolation of all energy sources before any person enters.

Question 2

What is the primary purpose of establishing baseline thickness measurements during the initial inspection of a new or newly installed pressure vessel?

Accepted Answer

To provide reference data so future corrosion rates can be accurately calculated

Answer

Baseline readings establish the starting thickness from which future readings are compared, enabling accurate corrosion rate calculation and remaining life prediction.

Question 3

Under API 510, inspection intervals for pressure vessels operating at low temperatures where brittle fracture is a concern should be planned to include:

Accepted Answer

Assessment of toughness requirements and review of any excursions below the minimum design metal temperature (MDMT)

Answer

Vessels susceptible to brittle fracture require that inspection plans address toughness evaluation and document any operating temperature excursions below the vessel's MDMT.

Question 4

A pressure vessel is reclassified to a higher-severity service fluid. According to API 510, what should happen to the inspection schedule?

Accepted Answer

The inspection schedule should be reviewed and potentially shortened to reflect the increased risk

Answer

A change to more severe or hazardous service increases the consequence and potentially the probability of failure, warranting a review and likely shortening of the inspection interval.

Question 5

Which situation would justify postponing a scheduled internal inspection of a pressure vessel per API 510?

Accepted Answer

The inspection engineer documents that on-stream inspection data confirms adequate remaining life and acceptable risk for the deferral period

Answer

API 510 allows deferral of internal inspections when on-stream inspection results and documented risk assessment support continued safe operation through the deferral period.

(API 510) Certified Pressure Vessel Inspector Practice Test

(API 510) Certified Pressure Vessel Inspector Practice Test

API 510 Inspection Planning and Scheduling 5