Temperatures

Question 1

Corrosion - CUI affects Carbon Steel & low alloy (temperature range)

Answer 1

10 - 350 F 574: 7.4.4.1.e

Question 2

UT Calibration - Calibration Block must be within what temperature of the part to be examined

Answer 2

25 F 577: 9.9.1

Question 3

NDE - Standard temperature range for a PT exam

Answer 3

40 - 125 F V: T-652/653

Question 4

Testing - Min flash point of hydrocarbons used for leak testing

Answer 4

120 F 570: 5.8.1

Question 5

Corrosion - CUI affects Austenitic Stainless Steel (temperature range)

Answer 5

120 - 400 F 574: 7.4.4.1.h

Question 6

Corrosion - Typical dew point of hydrochloric acid

Answer 6

130 F 571: 4.3.7.3.d

Question 7

Corrosion - Temperature where chloride stress corrosion cracking becomes a concern

Answer 7

> 140 F 571: 4.5.1.3.g

Question 8

NDE - Special procedures needed for UT thickness readings

Answer 8

> 150 F 570: 5.7.1

Question 9

Corrosion - Temperature swings that can cause thermal fatigue

Answer 9

+/- 200 F 571: 4.2.9.3.c

Question 10

Corrosion - Most aggressive CUI temperature range

Answer 10

212–350 F 571: 4.3.3.3.b

Question 11

Corrosion - Typical dew point of sulfuric acid

Answer 11

280 F 571: 4.3.7.3.c

Question 12

Welding - Minimum pre-heat temperature, when pre-heat is substituted for PWHT

Answer 12

300 F 570: 8.2.3.2

Question 13

Welding - Minimum pre-heat temperature, when a local PWHT is substituted for a full encirclement PWHT

Answer 13

300 F 570: 8.2.3.3.c

Question 14

Corrosion - Starting temp for Sulfidation on Carbon Steel per API 574

Answer 14

450 F 574: 7.4.6.2.j

Question 15

Corrosion - Starting temp for Sulfidation on Iron-based Alloys per API 571

Answer 15

500 F 571: 4.4.2.3.c

Question 16

Corrosion – Temperature range causing temper embrittlement in low chromes

Answer 16

650–1100 F 574: 3.1.39

Question 17

Inspection – Operating Temp when a Corrosion Specialist must input on an Inspection Plan

Answer 17

> 750 F 570: 5.1.1.1

Question 18

Corrosion – Graphitization occurs in Carbon Steel materials

Answer 18

> 800 F 574: 10.3.5.2.4

Question 19

Corrosion – Creep occurs in 1-1/4% Chrome materials

Answer 19

> 900 F 574: 7.4.11.1

Question 20

NDE - Maximum temperature for UT readings per ASME Sect V

Answer 20

1000 F ASME V: SE-797 8.5

Question 21

NDE - Maximum temperature for UT readings per API 574

Answer 21

1100 F 574: 10.2.1.5.1

Question 22

Materials - Carbon Steel PWHT temperature

Answer 22

1100-1200 F B31.3: Tbl 331.1.1

Question 23

Testing - Minimum base metal temp during pressure testing when wall thickness is < 2” thick

Answer 23

MDMT + 10 F 570: 5.8.3

Question 24

Testing - Minimum base metal temp during pressure testing when wall thickness is > 2” thick

Answer 24

MDMT + 30 F 570: 5.8.3

Question 25

NDE - Maximum temperature for magnetic particles

Answer 25

Manufacturer Recommendation ASME V: 731.c