Calculating Blank Head Thickness

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According to ASME BPVC Section 1, PG-29.1, what formula is used to calculate the minimum required thickness of a seamless, unstayed dished head?

PG-29.6 UG-32(d)

PG-29.11 to PG-29.13 UG-32(e)

PG-29.7 to PG-29.8 UG-32(c)

PG-29.1 (correct)

In ASME BPVC Section I, what is the standard term used to describe a dished head?

Ellipsoidal

Torispherical (correct)

Segment of a sphere

Full hemispherical

In the design of a semi-ellipsoidal dished head, what is the relationship between the radius L and the diameter D?

L = 1.5D

L = D

L = 2D

L = 0.5D (correct)

According to the given information, what is the thickness of a blank head with a manhole that exceeds the allowed limit?

16.52 mm Signup and view all the answers

What is the thickness of a seamless, blank, unstayed dished head with pressure on the concave side, given a diameter of 1067 mm and a dish radius of 915 mm?

22.17 mm Signup and view all the answers

What is the required thickness of a seamless, blank, unstayed dished head with pressure on the concave side, given a diameter of 1067 mm, a dish radius of 827 mm, and a flanged-in manhole greater than 150 mm in one dimension?

25.17 mm Signup and view all the answers

According to the text, what is the formula for calculating the thickness of a blank, unstayed dished head with the pressure on the concave side, when it is a segment of a sphere?

$t = 5PL/4.8Sw$ Signup and view all the answers

According to the text, when a dished head has a flanged-in manhole or access opening that exceeds 150 mm (6 in) in any dimension, how much should the thickness be increased by?

No less than 15% of the required thickness for a blank head Signup and view all the answers

According to the text, what is the minimum thickness of a head with a flanged-in manhole opening when the radius L to which the head is dished is less than 80% of the outside diameter of the head?

The thickness of a head with a flanged-in manhole opening shall be at least that found by making L equal to 80% of the outside diameter of the head and with the added thickness for the manhole Signup and view all the answers

According to the given information, what is the minimum required thickness for the dished head?

17.86 mm Signup and view all the answers

What is the ratio between the major and minor axis of an ellipsoidal head?

2:1 Signup and view all the answers

What is the formula used to calculate the minimum required thickness for a blank, unstayed, full-hemispherical head?

$t = rac{PL}{2Sw - 0.2P}$ Signup and view all the answers

If a flanged-in manhole is used in a full-hemispherical head, how is the thickness of the head calculated?

Using the same formula as for a head dished to a segment of a sphere Signup and view all the answers

What is the value of 'y' used in the formula to calculate the thickness of a cylindrical vessel?

0.4 Signup and view all the answers

What is the value of 'E' used in the formula to calculate the thickness of a cylindrical vessel?

1.0 Signup and view all the answers

Calculating Blank Head Thickness

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Questions and Answers

According to ASME BPVC Section 1, PG-29.1, what formula is used to calculate the minimum required thickness of a seamless, unstayed dished head?

In ASME BPVC Section I, what is the standard term used to describe a dished head?

In the design of a semi-ellipsoidal dished head, what is the relationship between the radius L and the diameter D?

According to the given information, what is the thickness of a blank head with a manhole that exceeds the allowed limit?

What is the thickness of a seamless, blank, unstayed dished head with pressure on the concave side, given a diameter of 1067 mm and a dish radius of 915 mm?

What is the required thickness of a seamless, blank, unstayed dished head with pressure on the concave side, given a diameter of 1067 mm, a dish radius of 827 mm, and a flanged-in manhole greater than 150 mm in one dimension?

According to the text, what is the formula for calculating the thickness of a blank, unstayed dished head with the pressure on the concave side, when it is a segment of a sphere?

According to the text, when a dished head has a flanged-in manhole or access opening that exceeds 150 mm (6 in) in any dimension, how much should the thickness be increased by?

According to the text, what is the minimum thickness of a head with a flanged-in manhole opening when the radius L to which the head is dished is less than 80% of the outside diameter of the head?

According to the given information, what is the minimum required thickness for the dished head?

What is the ratio between the major and minor axis of an ellipsoidal head?

What is the formula used to calculate the minimum required thickness for a blank, unstayed, full-hemispherical head?

If a flanged-in manhole is used in a full-hemispherical head, how is the thickness of the head calculated?

What is the value of 'y' used in the formula to calculate the thickness of a cylindrical vessel?

What is the value of 'E' used in the formula to calculate the thickness of a cylindrical vessel?

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