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Trunnion Calculation Sheet

This document provides pipe and trunnion data for a sulfur block unit (Unit 20050) for the Dangote Refinery and Petrochemical Project (Project A545). It includes dimensions, loads, stresses, and stress calculations to check if the design meets allowable stress limits. Key parameters checked are the combined stresses in the header pipe, stresses in the trunnion, and stresses from various loads. All stress checks for the design passed requirements.

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Ishu Vohra
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1K views2 pages

Trunnion Calculation Sheet

This document provides pipe and trunnion data for a sulfur block unit (Unit 20050) for the Dangote Refinery and Petrochemical Project (Project A545). It includes dimensions, loads, stresses, and stress calculations to check if the design meets allowable stress limits. Key parameters checked are the combined stresses in the header pipe, stresses in the trunnion, and stresses from various loads. All stress checks for the design passed requirements.

Uploaded by

Ishu Vohra
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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PROJECT:- DANGOTE REFINERY AND PETROCHEMICAL PROJECT

JOB NO:- A545


UNIT:- SULPHUR BLOCK
NODE NO:- 20050

Pipe / Trunnion Data ( Data in bold type is input )

Parent pipe O/D 219.075 [mm] C/L Parent Pipe

C/L Trunnion
Axial load

Radius 109.5375 [mm]

Trunnion O/D 114.3 [mm]


longitudinal
Vert'l / Wt. load

Radius 57.15 [mm] Moment Arm

Parent pipe wall thk. 3.7592 [mm] Trunnion wall thk.

Corr. allow. 1.5 [mm] Total wall thk.

Re-pad thk. 0 [mm] Design temp.

Line design pressure 4 [kg/cm2] Hot Stress Allow. (Sh)


0.39 [N/mm ]2

Loading Data

Longitudinal load 30 [kg] Circumferential load

Axial Load 123 [kg] Moment arm

Long. Bending Mom. = 1.18E+05 [N-mm] Long. Press. Stress [SLP] =

Circum. Bending Mom. = 8.24E+04 [N-mm] Circum. Press. Stress [SCP] =

Trunnion Loading FL = 11.47 [N/mm]

FA = 3.36 [N/mm]

Header Pipe Stresses SL = 41.37 [MPa]

SA = 18.18 [MPa]

COMBINED ALLOWABLE STRESS CHECK

SL + SA + SLP = 69.00 £ 1.5 x SH 173

SC + SA + SCP = 95.01 £ 1.5 x SH 173

Stress in trunnion 2.54 £ SH 115

TRUNNION CALCULATION SHEET

Page 1 of 2
STRESS SYSTEM NO.
A545-181-16-43-SR-025
CALCULATION BY CK
DATE 6/28/2018

C/L Parent Pipe

C/L Trunnion
Axial load Axial load

longitudinal
Vert'l / Wt. load Circum'l load

Moment Arm

6.556 [mm]

2.2592 [mm]

125 [deg C]

16700 [PSI]
115.14 [MPa]

21 [kg]

400 [mm]

Long. Press. Stress [SLP] = 9.45 [MPa]

Circum. Press. Stress [SCP] = 18.91 [MPa]

FC = 8.03 [N/mm]

SC = 57.92 [MPa]

PASSED

PASSED

PASSED

Page 2 of 2

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