100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
API 570 - Study Guide Questions and Answers 100% Pass $12.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. 2025 Prep Tests
  4.  
  5. 2025 Prep Tests

Exam (elaborations)

API 570 - Study Guide Questions and Answers 100% Pass
 0 view  0 purchase
  • Course
  • 2025 Prep Tests
  • Institution
  • 2025 Prep Tests

API 570 - Study Guide Questions and Answers 100% Pass Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? - ANSWER-longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service? - ANS...

[Show more]

Preview 3 out of 16  pages

Document information

  • November 3, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • api 570 study guide questions and answers 100 p

Written for

  • 2025 Prep Tests
  • 2025 Prep Tests

Seller

avatar-seller
KaylinHoffman

Content preview

Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024




API 570 - Study Guide Questions and

Answers 100% Pass


Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld

orientation? - ANSWER✔✔-longitudinal weld


Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service? -

ANSWER✔✔-10%


for welded pipe, the normal thickness of mill-under-tolerance is? - ANSWER✔✔-.010 or 10 mils


The corrosiveness of soils can be determined by measuring the soils: - ANSWER✔✔-Resistivity


when qualifying a weld procedure the essential variables must: - ANSWER✔✔-be recorded on both the

WPS & PQR


In severe refinery services which type of pipe is normally used? - ANSWER✔✔-seamless pipe


a pipe has a thickness designation of "40S". what does the "S" mean? - ANSWER✔✔-Stainless steel


Generally socket-welded pipe is not used for nominal pipe sizes above: - ANSWER✔✔-2 inches


A propane piping system should be classified as? - ANSWER✔✔-Class 1


According to ASME/ANSI B16.5, flanges from plate materials can only be used for: - ANSWER✔✔-Blind

flanges




Copyright ©Stuvia International BV 2010-2024 Page 1/16

,Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


When should Preheat never be substituted for PWHT if: - ANSWER✔✔-When the PWHT was used to

prevent environmental cracking.


During welding, non-esential variables: - ANSWER✔✔-Must be recorded only on the WPS and must be

followed by the welder.


During a hydrotest, all joints should be: - ANSWER✔✔-left uninsulated


ASME/ANSI B16.5 requires flanges to be arked with: - ANSWER✔✔-marked with the class rating.


Graphitization of carbon steels begins to occur when metal temperatures exceed: - ANSWER✔✔-800°F


An inservice process pipe should be classified as Class 1 when the % of H2S exceeds: - ANSWER✔✔-3%


A welder becomes unqualified when he has not welded in: - ANSWER✔✔-6 months


A PQR test coupon with a shell thickness of "T" can generally be used to qualify a wall thickness on the

WPS up to. - ANSWER✔✔-2T


A pressure test is always required: - ANSWER✔✔-whenever the authorized inspector believes one is

necessary


When can radiography not be used to qualify a welder? - ANSWER✔✔-when using the GMAW process

with the short circuit mode


Generally, raised face flanges should have a surface finish of: - ANSWER✔✔-125-250 micro- inches


During a direct visual exam of a pipe weld, the minimum light intensity should be: - ANSWER✔✔-100

footcandles


Describe the 3G welding test position. - ANSWER✔✔-Vertical groove Weld



Copyright ©Stuvia International BV 2010-2024 Page 2/16

, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


Seal welding pipe threads: - ANSWER✔✔-may be used to prevent leaks


Liquid thermal relief valves should be set at a pressure not higher than: - ANSWER✔✔-120 %


When fabricating pipe, unknown materials: - ANSWER✔✔-Should never be used (except for door stops)


The material verification program specified by API 578 applies to: - ANSWER✔✔-only pressure

containing components.


what is the interval for thickness measurements on a class 1 piping system? - ANSWER✔✔-lesser of 5

years or half life of the pipe


According to B31.3, a welder's qualification records from a previous employer can: - ANSWER✔✔-Be

accepted if the inspector approves


When welding together piping components of different thicknesses, the thicker part should be trimmed

with a: - ANSWER✔✔-30 degree taper.


When performing soil-to air inspections on uncoated lines, it is recommended to excavate the soil: -

ANSWER✔✔-6-12 inches.


When performing preheat prior to welding or PWHT, the preheat zone and/or PWHT must extend how

far beyond the edge of the weld? - ANSWER✔✔-1 inch


Flange bolts are unacceptable if the bolt threads do not extend: - ANSWER✔✔-inside the nut within 1

thread of the nut face


Carbon steel materials are most likely to be incorrectly substituted in: - ANSWER✔✔-a chrome steel

piping system.




Copyright ©Stuvia International BV 2010-2024 Page 3/16

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller KaylinHoffman. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

81989 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart