API 510 - Section - 5

Question 1

The inspection plan shall be developed by,,,,,

Answer 1

inspector and/or engineer

Question 2

The inspection plan shall contain the ,,,, and ,,,,,, required to monitor damage mechanisms and assure the mechanical integrity of the equipment

Answer 2

inspection tasks

schedule

Question 3

RBI assessment, shall include a systematic evaluation of both the ,,,, and the ,,,,,, in accordance with ,,,,,

Answer 3

probability of failure
consequence of failure
API 580

Question 4

API 581 details an RBI ,,,,,

Answer 4

methodology

Question 5

It is essential that all RBI assessments be thoroughly ,,,, in accordance with API 580

Answer 5

documented

Question 6

Typical examples of vessels in cyclic service include ,,,,,, and ,,,,,.

Answer 6

coke drums, mole sieves

pressure swing adsorbers

Question 7

Susceptible Temperature Range for CUI

• for carbon and low alloy steels,,,,,,,,,
• for austenitic stainless steels,,,,,,,,,
• for duplex stainless steels,,,,,,,,,

Answer 7

10 °F (–12 °C) and 350 °F (175 °C)
140 °F (60 °C) and 350 °F (185 °C)
280 °F (138 °C) and 350 °F (185 °C)

Question 8

With carbon and low alloy steels, CUI usually causes ,,,,

Answer 8

localized corrosion

Question 9

With austenitic and duplex stainless steel materials, CUI usually is in the form of ,,,,,,,

Answer 9

external chloride stress corrosion cracking

Question 10

Examples of different types of CMLs include locations for ,,,,,

Answer 10

• thickness measurement,

- locations for stress corrosion cracking examinations, - - locations for high-temperature hydrogen attack examinations.

Question 11

when localized corrosion is expected or a concern, it is important that examinations are conducted using scanning methods such as ,,,,

Answer 11

Profile Radiography,

Scanning Ultrasonic techniques,

Question 12

For ultrasonic scanning, Corrective procedures should be utilized when metal temperatures (typically above ,,,,,) impact the accuracy of the thickness measurements obtained

Answer 12

150 °F [65 °C]

Question 13

A close visual inspection of pressure vessel components should not be performed until the vessel pressure is ,,,,,

Answer 13

at or below the MAWP.

Question 14

During pressure test, applying an additional load to the valve spring by turning the compression screw is ,,,,

Answer 14

prohibited

Question 15

Hydrostatic pressure tests of equipment having components of Type 300 series stainless steel should be conducted with ,,,or,,,having a chloride concentration of ,,,,,

Answer 15

potable water
steam condensate
less than 50 ppm

Question 16

During hydrostatic pressure test, If potable water is not available or if immediate draining and drying is not possible, water having a very low chloride level (e.g. steam condensate), higher pH (,,,,), and inhibitor addition should be considered to reduce the risk of pitting

Answer 16

> 10

Question 17

During hydrostatic pressure test, for sensitized austenitic stainless steel piping subject to polythionic stress corrosion cracking, consideration should be given to using ,,,,, solution for pressure testing (see NACE RP0170).

Answer 17

an alkaline-water

Question 18

A number of failures have been attributed to brittle fracture of steels that were exposed to temperatures ,,,,,,and to pressures…….. of the required hydrostatic test pressure.

Answer 18

below their transition temperature

greater than 20 %

Question 19

Most brittle fractures, however, have occurred on the ,,,of a high stress level (the first hydrostatic or overload)

Answer 19

first application

Question 20

Special attention should be given when testing ,,,, steels, especially ,,,,,, because they may be prone to or any other metal that may be prone to ,,,,,,,,,,, per the damage mechanisms listed in API 571 or because of ,,,,,, due to thickness or geometry considerations

Answer 20

low-alloy,,,,,,,2 1/4 Cr- 1Mo,,,,,,,,,temper embrittlement,,,,,, high triaxial stresses

Question 21

To minimize the risk of brittle fracture during a pressure test, the metal temperature should be maintained at ,,,,,,above the MDMT or MAT for vessels that are more than 2 in. (5 cm) thick and ,,,, above the MDMT or MAT for vessels that have a thickness of 2 in. (5 cm) or less

Answer 21

least 30 °F (17 °C) ,,,,,10 °F (6 °C),,,

Question 22

The test temperature need not exceed (,,,,,,) unless there is information on the brittle characteristics of the vessel material indicating a higher test temperature is needed

Answer 22

120 °F (50 °C)

Question 23

When hydrotesting solid or clad austenitic stainless steel, the water temperature should ,,,, to prevent possible chloride stress corrosion cracking

Answer 23

not exceed 120 °F (50 °C)

Question 24

Fasteners should be fully engaged. Any fastener failing to do so is considered acceptably engaged if the lack of complete engagement is

Answer 24

more than one