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RIGGING ANALYSIS for STEAM DRUM LIFTING by WINCH Refer to ASME B30.26-2004 Rigging Hardware and Hoisting and Rigging Safety Manual (Book)

11/12/2011

Jakarta

HaGun

BAB I. RIGGING ANALYSIS

A. Connecting Steam drum to sling by using Double Wrap Basket Hitch

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Lead Line Load Example A = 25 ton

1 line= 25 ton

Lead Line Load Example B = 25 ton

6 line= 4,167 ton ~ 5 ton

Load on structure A = 25 ton + 25 ton = 50 ton

Load on structure B = 25 ton + 5 ton = 30 ton

B. Angle effect to BLock Load

Analysis:

Load = 25 ton

Lead Line Load = 25 ton

6 line= 4,167 ton ~ 5 ton

Load Block C = Load x Factor α deg angle

Load Block C = 25 ton x 2 = 50 ton

Load on structure = Load + Lead Line Load

Lead Line Load = Load

Parts of Line at Load

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Load Block D = Lead Line Load x Factor α deg angle

Load Block D = 5 ton x 1.87 = 9.35 ton

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Load Block E = Lead Line Load x Factor α deg angle

Load Block E = 5 ton x 0.84 = 4.2 ton

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Load Block F = Lead Line Load x Factor α deg angle

Load Block F = 5 ton x 1.41 = 7.05 ton

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