API 510 Study Guide- Sec. 3-Definitions

Which of the following is considered a vessel alteration?
A) Weld build up in a locally corroded area
B) Replacement of a hemi-spherical head with a tori-spherical head
C) Addition of non-reinforced nozzle
D) Addition of fillet weld patch

An alteration on a vessel is defined as

an 8 NPS nozzle is going to be added to a 2-to-1 ellipsoidal vessel head. The vessel is rated for 350 psig at 500°F. The vessel has inside dia. of 72". The largest existing nozzle on the vessel is 18 NPS. Which of the following is true?
A) The vessel must be hydrotested after the nozzles are completed
B) This work must be authorized by the API 510 inspector
C) The root pass on the welds must be checked with either MT or PT
D) This work will be considered an alteration

A 14 NPS nozzle is going to be added to a vessel shell. The vessel is rated for 100 psig at 650°F. and has an existing 10 NPS nozzle. Which of the following is true?
A) This work is considered a repair
B) This work is considered an alteration
C) This work must be authorized only by the API 510 inspector
D) The shell-to-nozzle weld must be radiographed

Which of the following inspection organizations is not considered an acceptable API 510 authorized inspection agency?
A) Holder of an appropriate ASME code symbol
B) The jurisdiction
C) Insurance company that writes pressure vessel insurance
D) The owner/user

Which of the following is considered an API 510 authorized inspection agency?
A) an NDE contract organization
B) the inspection organization of the jurisdiction
C) the inspection department of a vessel manufacturer
D) The owner/user's operating department

Which of the following equipment types is covered by API 510?
A) a 36" expansion joint
B) tubular heater
C) unfired steam generator
D) knock out drum rated at 12 psig@400°F

a repair on a vessel is defined as

A vessel's hemi-spherical head has corroded is going to be replaced in kind at the next T/A. The vessel is rated for 150 psig@700°F. The vessel has 60" I.D. Which of the following is true?
A) This work must be done in accordance with API 2210
B) This work is considered a rerate
C) This work is considered an alteration
D) This work is considered a repair

Which of the following inspection organizations is not considered an acceptable API 510 repair organization?
A) A contract company that is acceptable to the owner/user
B) the owner/ user that owns the pressure vessel
C) the governing jurisdiction based on the location of the pressure vessel
D) an organization authorized by the jurisdiction

Which of the following is not considered a vessel rerate?
A) increase the fluid viscosity
B) decrease the design temp
C) increase the design pressure
D) Decrease the MDMT

Temper embrittlement occurs in certain materials when

Low chrome materials are subjected to temper-embrittlement. These materials are