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1.

The minimum duration for hydro testing on NPS 12 fitting shall be:

 
 
 
 

2.

The maximum temperature for hydro testing a fitting is :

 
 
 
 

3.

A Class 400 flanged fitting must be hydro tested at what pressure if the 1000F rating is 800 psig?

 
 
 
 

4.

Class 600 flagged joints may develop leakage unless special considerations for thermal gradients are applied at temperatures above ________ °F.

 
 
 
 

5.

The three basic parts to a flanged joint are :

 
 
 
 

6.

ASME B 16.5 does not cover :

 
 
 
 

7.

The maximum hydrostatic test pressure permitted for a flange in a system hydrostatic test is :

 
 
 
 

8.

“High strength” bolting is described as equivalent to :

 
 
 
 

9.

The pressure class ratings covered by ASME B16.5 are

 
 
 
 

10.

The standard finish for raised face flanges per ASME B16.5 is :

 
 
 
 

11.

Socket weld and threaded flanges are not recommended for service beyond the following temperatures if thermal cycles are involved :

 
 
 
 

12.

“Low strength ” bolting is “

 
 
 
 

13.

Ring joint sidewall surfaces ( gasket groove ) must not exceed ______________roughness.

 
 
 
 

14.

Which of the following items must be marked on all flanges or flanged fittings?

 
 
 
 

15.

When used above ________ °F, class 150 flanges may develop leakage unless special precautions are taken regarding loads or thermal gradients.

 
 
 
 

16.

ASME B16.5 Question and Answers – (Open Book)

The maximum depth and radial projection of an imperfection (deeper than the bottom of the serration) on an NPS 14 raised face flange is:

 
 
 
 

17.

On an NPS 24, 600 Class flange, the thickness of the flange (minimum) is:

 
 
 
 

18.

The allowable pressure (in psig) on a 1000F, Class 150 8” flange made from A-182 Grade F2 material is:

 
 
 
 

19.

If a Class 1500 flange is to be made from A-182 F347 stainless steel and will be used at 280 psig with a carbon content of 0.09%, at what maximum temperature can this flange be used?

 
 
 
 

20.

What is the minimum wall thickness of a Class 900 fitting that is NPS 16?

 
 
 
 

21.

What is the rated working pressure of a flanged fitting that is a 400 Class with a material stress value of 16,200 psi?

 
 
 
 

22.

What is the minimum wall thickness of an NPS 5 Class 1500 fitting?

 
 
 
 

23.

What is the maximum system hydrostatic test pressure required for a Class 300 flange that is made from Group 1.10 material?

 
 
 
 

24.

A local area has been thinned on the wall thickness of a flanged fitting. The fitting is NPS 8 Class 400, and the local area has been thinned to 0.400”. Is this corrosion acceptable per ASME B 16.5?

 
 
 
 

25.

In question No.9, what is the maximum circular area of sub-minimum thickness allowed, in square inches?

 
 
 
 

26.

From problem No.9 and No.10 above, if two areas of sub-minimum thickness are observed on the fitting, what is the minimum distance between the edges of these circles?

 
 
 
 

27.

What is the maximum system hydrostatic test pressure required for a Class 600 flange in a flanged joint made from Group 3.5 material?

 
 
 
 

28.

A local area has been thinned on the wall of a flanged fitting. The fitting is NPS 12 Class 900, and the local area has been thinned to 0.945”. What is the minimum acceptable thickness for this thinned area per ASME B 16.5?

 
 
 
 

29.

From the information in Question No.13, what is the maximum circular area of sub-minimum thickness allowed in square inches?

 
 
 
 

30.

Using the information in questions No.13, 14 , if two areas of sub-minimum thickness are observed on the fitting, what is the minimum distance between the edges of these circles?

 
 
 
 

31.

What would be the calculated thickness of a new NPS 14 flanged fitting with a 900 psi class designation?

 
 
 
 

32.

An NPS flanged fitting is operating at a temperature of 6500F and has a pressure class rating of 600 psi. Using a stress value of 17,400 psi, what would be the maximum permitted rated working pressure?

 
 
 
 

Question 1 of 32

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