API 510 Repair and Alteration 2

Question 1

When welding a repair patch onto a pressure vessel, the minimum preheat temperature is determined primarily by:

Accepted Answer

The base metal P-number and thickness

Answer

Preheat requirements per API 510 and ASME Section IX are governed by the base metal P-number and thickness.

Question 2

A vessel owner wants to add a new nozzle to an existing pressure vessel. Under API 510, this would be classified as:

Accepted Answer

An alteration

Answer

Adding a nozzle changes the vessel's design configuration and is classified as an alteration under API 510.

Question 3

After completing a weld repair on a pressure vessel, post-weld heat treatment (PWHT) is required when:

Accepted Answer

The original code of construction required PWHT or the repair weld exceeds thickness thresholds

Answer

PWHT is required after repairs when the original code of construction mandated it or when the repair weld thickness exceeds code-specified thresholds.

Question 4

A repair organization completing work on a pressure vessel in the field must have which of the following?

Accepted Answer

An R-stamp from the National Board of Boiler and Pressure Vessel Inspectors

Answer

The R-stamp from the National Board certifies that the repair organization has a quality control system for pressure vessel repairs.

Question 5

Which document must be prepared by the repair organization and filed with the National Board after completing an alteration to a pressure vessel?

Accepted Answer

Form R-1

Answer

Form R-1 (Report of Repair or Alteration) must be prepared and filed with the National Board after alterations to pressure vessels.

(API 510) API 510 Inspector Certification Practice Test

(API 510) API 510 Inspector Certification Practice Test

API 510 Repair and Alteration 2