API API-570 Übungsprüfungen
Zuletzt aktualisiert am 25.04.2025- Prüfungscode: API-570
- Prüfungsname: Piping Inspector
- Zertifizierungsanbieter: API
- Zuletzt aktualisiert am: 25.04.2025
The base metal is P No.1, the weld metal is A No.1, and the wall thickness is 7/8”.
What is the holding time at 1100- 1200?F for heat treatment
- A . 1 hour
- B . 2 hours
- C . 3 hours
- D . Procedure is not required for this thickness
The preheat zone shall extend beyond each edge of a pipe weld
- A . 1”
- B . 2”
- C . 2T
- D . 3T
The preheat zone shall extend beyond each edge of a pipe weld
- A . 1”
- B . 2”
- C . 2T
- D . 3T
A leak test is an alternative to inspection of buried piping.
What is the minimum liquid pressure to adequately conduct this test?
- A . 1 1/2 times the MAWP
- B . 1 1/4 times the MAWP
- C . 10% greater than MAWP
- D . Actual MAWP
all suspect areas and areas of damaged insulation should be examined?
- A . 10%
- B . 33%
- C . 50%
- D . 100%
What is the maximum allowable deviation for the ammeter on each piece of magnetizing equipment?
- A . 30%
- B . 10%
- C . 20%
- D . 15%
Bolts should extend during the installation of flanged connections.
- A . two threads past their nuts
- B . completely through their nuts
- C . only half way through their nuts
- D . at least 0.5 inches (12.7 mm) past their nuts
Care should be taken not to during a pressure test.
- A . allow any inert gas into the system
- B . use water in the system
- C . over-pressure the system
- D . under-pressure the system
A piping system that operates at a design pressure of 100 psi at 950? F was originally built from NPS 20 EFW (100% radiographed), ½” wall, A-516 Grade 70, A-671 material. During the last Inspection, the thickness was determined to be 0.370 inches. The records indicated the corrosion rate to be 0.009 inches per year.
What is MAWP if the next inspection is planned in 5 years?
- A . 126 psi
- B . 285.17 psi
- C . 98.23 psi
- D . Not enough information given