API 570 Flashcards

Total Flash Cards » 13
 
1. 

In a Positive Material Identification program, a material non-conformance is a test result that:

 

3.8 material nonconformance:

Is not consistent with the specified alloy.

 
2. 

What is the remaining life of a piping system with a short-term corrosion rate of 0.010 in/yr (0.25 mm/yr) and a long-term corrosion rate of 0.005 in/yr (0.13 mm/yr)? A minimum required thickness of 0.150" (3.8 mm), a remaining thickness of 0.210" (5.3 mm), and an original thickness of 0.270" (6.8 mm).

 

7.1.1 Long-term and short-term corrosion rates should be compared to see which results in the shortest remaining life as part of the data assessment.

 
3. 

How do you evaluate the effects of fire damage on a piping system?

 

7.4 Utilizing API 579 Fitness-for-Service

 
4. 

The remaining life of a piping system shall be calculated with what formula?

 

7.1.1 T actual - T minimum / corrosion rate

 
5. 

The owner-user shall specify industry qualified UT Shear Wave Examiners when:

 

570 5.10 Trying to detect and size flaws for Fitness-for-Service evaluation.

 
6. 

What is the level of examination in a Material Verification program?

 

578 3.5 level of examination:

The specified percentage of the number of components to be examined.

 
7. 

Substituting appropriate NDE procedures for a pressure test after a repair may only be done after:

 

570 8.2.6 Pressure Testing

Consultation with the inspector and the piping engineer.

 
8. 

API RP 579 provides procedures for:

 

570 5.3.11

API RP 579, Section 3 provides procedures for the assessment

of equipment for resistance to brittle fracture.

 
9. 

When positive material identification (PMI) testing is required, portable X-ray fluorescence spectrometer:

 

578 5.2.1 Portable X-ray Fluorescence

cannot be used to detect elements lighter than sulfur (S).

 
10. 

Piping system corrosion rates shall be calculated on:

 

7.1.1 Either a short-term or long-term basis

 
11. 

API 578, Material Verification program for new and existing alloy piping systems covers:

 

4.2.5 Components Covered in a Material

Verification Program

Process valves (including control valves) and relief valves.

 
12. 

A piping system with a high potential consequence of failure has a corrosion rate of 10 MPY, 0.010 in/yr (0.25 mm/yr), a retirement thickness of .350" (8.9 mm), a required thickness of .250 (6.4 mm), and an actual thickness today of .500" (12.7 mm). What is the remaining life?

 

7.1.1 Remaining Life Calculations

 
13. 

Piping components identified by PMI as not meeting the original piping specifications:

 

570 5.8

Would be targeted for replacement.