ASME B31.3 EXAM ACTUAL QUESTIONS AND

ASME B31.3 EXAM (ACTUAL / ) QUESTIONS AND

VERIFIED ANSWERS ALREADY PASSED

What size cover fillet weld (tc) is required around the fully penetrated groove weld of the branch into the header? - AnswersAnswersAnswerslesser of .7 x thickness of the branch or 1/4"

A weld defect to be repaired shall be removed: -

AnswersAnswersAnswersTo sound metal

What table can you find the preheat temperature. - AnswersAnswersAnswersASME B31.3 table 330.1.1

A NPS 8 s40 pipe ASTM grade B is to be welded. The weather is clear. The temperature is 30 degrees F. What preheat temperature, if any, is required. - AnswersAnswersAnswers50 degrees F

The zone of preheat shall extend: -

AnswersAnswersAnswersAt least 1" beyond the edge of the weld.

When deciding what preheat temperature to use what are the two factors? - AnswersAnswersAnswersP no. Of pipe found in table A1 and thickness of pipe.

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When welding two dissimilar materials, how do you determine the preheat temperature? - AnswersAnswersAnswersYou always use the higher of the two required temperatures.

An ASTM A106 grade B, NPS 8, s40 pipe is to be welded to an ASTM A335 grade P9, NPS 8, s40 pipe. What preheat temperature is required? - AnswersAnswersAnswers350 degrees F

When components of a piping system are joined by welding, the thickness to be used in applying the heat treatment

provisions of ASME B31.3, Table 331.1.1 shall be: -

AnswersAnswersAnswersThat of the thicker component measured at the joint, except for certain exclusions.

Where a hardness limit is specified in table 331.1.1, at least ____% of welds! hot bends, and hot formed components in each heat treated batch and 100% of those locally heat treated shall be tested. - AnswersAnswersAnswers10

When welding two different p no. Pipes together and what is required, what determines your hardness from table 331.1.1? - AnswersAnswersAnswersEach P no. Pipe will have its own hardness requirement.

What is acceptable as an alternative heat treatment? - AnswersAnswersAnswersNormalizing, normalizing and tempering, or annealing

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When entire piping assembly to be heat treated cannot fit into the furnace, it is permissible to heat treat in more than one heat, provided there is at least ____ overlap between successive heats! and that parts of the assembly outside of the furnace are protected from harmful temperature gradients. - AnswersAnswersAnswers1 foot

Flattening of a bend, the difference between maximum and minimum diameters at any cross section, shall not exceed ___% on nominal outside diameter for internal pressure. - AnswersAnswersAnswers8 (removal of metal shall not be used to achieve these requirements)

Flattening of a bend, the difference between maximum and minimum diameters at any cross section, shall not exceed ___% on nominal outside diameter for external pressure. - AnswersAnswersAnswers3% (removal of metal is prohibited)

While assembling a piping system it is required to pull two pieces into alignment. This distorts one of the pieces (puts a bend into one of the pipe sections). The assembly is in a strain that the inspector feels is detrimental to the equipment. What action should the inspector take? - AnswersAnswersAnswersSince any distortion that introduces a strain is prohibited, the detail should be removed and the problem corrected.

Before bolting up flanges, the inspector should check alignment to the design plane. It should be within ____.Measured across diameter. - AnswersAnswersAnswers1/16"

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