Closed Book Questions

Question 1

What is the predominant factor in mechanical fatigue cracking

Answer 1

Surface Notches

Question 2

Low energy on a notch toughness test indicates

Answer 2

that the material is brittle

Question 3

300 Series Stainless Steel is mostly susceptible to

Answer 3

Chloride SCC

Question 4

Chloride SCC appears

Answer 4

Branched cracking, transgranular cracking

Question 5

CMLs Consider potential for

Answer 5

Local Corrosion + Service specific damage

Question 6

Before any repairs are performed, all proposed methods of design, execution, materials, welding
procedures, NDE, and testing shall be approved by

Answer 6

inspector or engineer

Question 7

For alterations, major repairs, and
temporary repairs, approval by

Answer 7

both the inspector and engineer is required

Question 8

All nozzle installations shall be approved by

Answer 8

an engineer

Question 9

Heat Exchanger in KOH service, surface breaking flaws, intergranular cracking. Metalographic analysis finds they are oxide filled -

Answer 9

Caustic SCC

Question 10

Controlled Deposition Welding in lieu of PWHT, what must happen

Answer 10

repair method must be reviewed and endorsed by PVE prior to implementation

Question 11

A torispherical head has corrosion in the crown, what calculation should be used to determine required wall thickness

Answer 11

Hemispherical head thickness calculation in construction code
The central portion of the head is defined aas the center of the head with a dia = to 80% shell diameter

Question 12

Locally thinned areas can be assessed by -

Answer 12

Part 6 in API-579-1 / FFS-1

Question 13

RBIs should be updated

Answer 13

after each vessel inspection

Question 14

Pre 1968 Vessels cant be

Answer 14

Re-rated to latest code

Question 15

To complete a re-rating, the inspector must

Answer 15

witness attachment of an additional name plate, or additional nameplate stamping

Question 16

Maximum pressure gauge during pressure testing

Answer 16

Four times maximum test pressure

Question 17

PRV with an auxiliary valve to control the main valve is?

Answer 17

A pilot valve

Question 18

Use of short vs long-term corrosion rate determined by

Answer 18

inspector in consult with a corrosion specialist

Question 19

HIC Cracks look like

Answer 19

a set of stairs

Question 20

Sulfidisation usually found in

Answer 20

Oil, gas, coke services

Question 21

For a new vessel or for a vessel for which service conditions are being changed, one of the following methods shall be used to determine the vessel’s probable corrosion rate

Answer 21

a) A corrosion rate may be calculated from data collected by the owner-operator on vessels operating in the
same or similar service.
b) A corrosion rate may be determined through appropriately placed ultrasonic sensors on the equipment.
c) A corrosion rate may be estimated by a corrosion specialist.
d) A corrosion rate may be estimated from published data on vessels in same or similar service.

Question 22

What should be done for a pressure vessel which has no nameplate and unidentified materials

Answer 22

Perform an inspection

Question 23

To minimize the risk of brittle fracture during a pressure test, the metal temperature should be maintained
at least X above MDMT for vessels over 2” thick

Answer 23

17C or 30F

Question 24

To minimize the risk of brittle fracture during a pressure test, the metal temperature should be maintained
at least X above MDMT for vessels at or below 2”

Answer 24

6C or 10F

Question 25

When hydrotesting solid weld overlaid or clad austenitic stainless steel, the water temperature should not exceed X to avoid possible XX

Answer 25

50 °C (120 °F), chloride stress corrosion cracking

Question 26

Which welding process uses a stream of droplets

Answer 26

GMAW

Question 27

If external coverings are in good condition and there is no reason to suspect damage behind them...

Answer 27

it is not necessary to remove them for inspection of the vessel.

Question 28

Preheat as per API 510 -The 150 °C (300 °F) temperature should be checked to assure that XXXX is maintained at the minimum temperature during welding. The maximum interpass temperature shall not exceed 315 °C (600 °F).

Answer 28

100 mm (4 in.) of the material or four times the material thickness (whichever is greater) on each side of the groove

Question 29

API QUTE/QUSE quals are

Answer 29

shear wave examiners

Question 30

minimum precautions to a pneumatic test:

Answer 30

inspection precautions of ASME Code

Question 31

After review who can change/delete the inspectors repair recommendations?

Answer 31

inspector supervisor

Question 32

On-stream inspection of pressure boundary items primarily to

Answer 32

detect damage mechanics identified in the inspection plan

Question 33

Inspection period for rupture discs

Answer 33

depends on service conditions

Question 34

Replacing a hemispherical head to a torispherical head maintaining the same MAWP is

Answer 34

a major repair

Question 35

a 360 degree full encirclement sleeve with full pen welds is

Answer 35

not an adequate permanent repair

Question 36

Fillet welded patches shall have a rounded corner radius of

Answer 36

at least 1 inch

Question 37

Lap bands can be considered a permanent repair

Answer 37

never

Question 38

When isolating for inspection of a PRV with set pressure greater than that of connected outlet flange

Answer 38

inlet block closed before outlet block closed

Question 39

the API 578 scope includes

Answer 39

Carbon steel, stainless steel & non ferrous metals

Question 40

Knuckle area on a torispherical head required t calculated by

Answer 40

full torispherical head calculation in construction code

Question 41

Inspectors actively engaged as an inspector are tested to API 510 revisions

Answer 41

Every 6 years

Question 42

Inspection plans are developed by

Answer 42

inspector or engineer

Question 43

Multiple thickness reading should be taken in areas

Answer 43

where T actual is varied from MDR

Question 44

CMLs can be reduced or eliminated when

Answer 44

Possibility of failure or consequences of failure are low

Question 45

on-stream UT measurements are

Answer 45

optional

Question 46

If areas of CUI are found

Answer 46

inspect other susceptible locations

Question 47

Corrosion rates of an area under examinations should be calculated from

Answer 47

lowest reading, or an average of several readings

Question 48

Temperature correction for UTT should be done for temps above

Answer 48

65C

Question 49

Pressure tests should be performed after repairs when

Answer 49

the inspector believes one is necessary and specifies it in the repair plan

Question 50

A Pressure vessel engineer, as per API 510 is assumed to be able to

Answer 50

Assess design aspects relating to a pressure vessel

Question 51

MAWP Calculation

Answer 51

P=SEt/R+(0.6*t)