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30 Cards in this Set
- Front
- Back
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What is the formula for MAWP? |
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What is the coefficient Y and where would you find it? |
Y is the temperature coefficient, you will find it in B31.3, Table 304.1.1, pg 22 |
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Local PWHT may be sub'd for 360 degree banding on local repairs on all materiLs, provided the following precautions and requirements are applied |
A preheat of 300 degree F or higher as specified by specific welding practices are maintained while welding |
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What is the coefficient W, and where would you find it? |
Weld joint reduction factor, see b31.3, Table 302.3.5, pg 20 |
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What is the formula for determining the Blank minimum thickness? |
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Where would you find the piping allowable stress in the code books? |
ASME B31,3, Table A-1 |
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Required thickness for piping systems is determined by what formula? |
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Detection of interior surface ID breaking planar flaws when inspecting for the external surface OD, the owner/user shall specify... |
UT Inspection performed by, QUTE |
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Who obtains thickness measurements? |
Authorized Inspector or examiner |
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Who is responsible to the owner/user for materials, equipment, quality control and workmanship necessary to repair piping systems? |
Repair organization |
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Who evaluated and/or accepts examination results? |
Authorized inspector |
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What causes mechanical fatigue? |
Cyclical stresses |
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What PWHT temperature could prevent caustic stress corrosion cracking for Carbon Steel piping? |
1150 deg F, API 571 part 4.5.3.6 |
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What materials have a prominently at risk to brittle fracture? |
CS, low alloy and 400 series SS |
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What failure mechanisms have an appearance of straight/non-branching cracks with little to no plastic deformation? |
Brittle Fracture |
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What failure mechanism is dagger - shaped, transgranular and oxide filled? |
Thermal fatigue |
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What failure mechanism occurs in the crevice between two materials? |
Galvanic corrosion [API 571 4.3.15] |
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What failure mechanism is characterized by cup shaped pits |
Microbial Induced Corrosion [API 571 4.3.8.5] |
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What failure mechanisms is characterized by surface highly branched crazed cracks? |
CL-SCC [API 571 4.5.1.5] |
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What is the preffered inspection and monitoring methods for CL-SCC? |
Phase Analysis Eddy Current or PT |
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Nickel content of an alloy has a major effect on the resistance of a material from environmental cracking. Alloys w/ at least ___ % of nickel content are highly resistant from environmental cracking |
35% [4.5.1.3 (1)] |
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Brittle fractures occur due to? |
Operating temperature below the ductile-to-brittlr transition temp |
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ASME Section VIII had limited restrictions on notch toughness (brittle fracture) prior to what edition |
1987 [API 571 4.2.7.4] |
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Atmospheric corrosion is most severe in? |
Marine environments [API 571 4.2.7.4] |
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Which of the following is a means to prevent/mitigate thermal fatigue |
Reduction of stress concentrators [API 571 4.2.7.4] |
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Fatigue cracking caused by high cycle (high frequency) can be difficult to detect because... |
Once cracking begins it only takes a few more cycles to fail [API 571 4.2.16.7 (d)] |
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What do you get from Table A-1A and what page number of B31.3 is it on? |
You get the joint quality factor for casting systems. Pg 334 of ASME B31.3 (2016) |
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What do you get from Table A-1B and where do you find it? |
Joint quality factors for piping, page 335 |
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AUX small bore piping is defined as.. |
Piping that can be isolated from primary piping systems |
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Why is it not possible to use statistical analysis of thickness data to assess corrosion rate and remaining life? |
Significant localized corrosion is unpredictable |
