STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

532 Drilling and Well Completions
Table 4-5
Recommended Hoisting Tool Contact Surface Radii
(All dimensions in inches) [9]
1 2 3 4
~ ~
5 6 7 8 9
Rating
Traveling Block &
Hook Bail
See Fig. 4-16
Hook & Swivel Bail
See Fig. 4-17
"
A, A? B, Bz E, El F, Fd '
Short Metric Max Min Min Max Min Max M u Min
tons tons in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm
25-40 22.7-36.3 2% 69.85 2% 69.85 3% 82.55 3 76.20 2 50.80 1% 38.10 3 76.20 3 76.20
41-65 37.2-59 2% 69.85 2% 69.85 3% 82.55 3 76.20 2 50.80 1% 44.45 3% 88.90 3% 8890
66-100 59.9-91 2% 69.85 2% 69.85 3% 82.55 3 76.20 2% 57.15 2 50.80 4 101.60 4 101.60
101-150 91.7-136 2% 69.85 2% 69.85 3% 82.55 3 76.20 2% 63.50 2% 57.15 4% 114.30 4% 114.30
151-250 137.1-227 4 101.60 4 101.60 3% 82.55 3 76.20 2% 69.85 2% 63.50 4% 114.30 4% 114.30
251-350 227.9-318 4 101.60 4 101.60 3% 82.55 3 76.20 3 76.20 2% 69.85 4% 114.30 4% 114.30
351-500 318.7-454 4 101.60 4 101.60 3% 88.90 3% 82.55 3% 88.90 3% 82.55 4% 114.30 4% 114.30
501-650 454.9-591 4 101.60 4 101.60 3% 88.90 3% 82.55 3% 88.90 3% 82.55 4% 114.30 4% 114.30
651.750 591.1-681 6 152.40 6 152.40 3% 88.90 3% 82.55 4% 107.95 4 101.60 4% 114.30 4% 114.30
751-1000 681.9-908 6 152.40 6 152.40 6% 158.75 6 152.40 5% 133.35 5 127.00 5 127.00 5 127.00
10 11 12 13 14 1.5 16 17 18
Elevator Link & Hook
Link Ear
See Fig. 4-18
Elevator Link & Elevator
Link Ear
See Fig. 4-18
Rating
C, c, D, D, G, c, H, n1
Max Min Min Max MW Min Min Max Short Metric
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm tons tons
1% 38.10
2% 63.50
2% 65.50
2% 63-50
4 101.60
4 101.60
4 101.60
4 101.60
4 101.60
1% 38.10
2% 63.50
2% 63.50
2% 63.50
4 101.60
4 101.60
4% 120.65
4% 120.65
5 127.00
4% 114.30 5 127.00
1% 31.75
1% 31.75
1% 38.10
1% 38.10
1% 44.45
1% 44.45
2% 57.15
2% 57.15
2% 63.50
3 76.20
% 22.23
% 22.23
1% 28.58
1% 28.58
1% 34.93
1% 34.93
1% 47.63
1% 47.63
2% 63.50
2% 69.85
' Yt. 23.82
17" 30.94
l'Yp" 37.31
1% 47.63
2% 57.15
2% 57.15
2% 69.85
1 25.40
1 25.40
1 25.40
1% 38.10
1% 47.63
2 50.80
2 50.80
2% 60.32
2% 60.32
2% 73.03
\-
2 50.80 25-40
2 50.80 41-65
2 50.80 66-100
2 50.80 2 50.80 101-150
FA 69.85 2% 69.85 151-250
2% 69.85 2% 69.85 251-350
3% 82.55 3% 82.55 351-500
5 127.00 5 127.00 501-650
5 127.00 5 127.00 651-750
6% 158.75 6% 158.75 751-1000
22.7-36.3
37.2-59
59.9-91
91.7-136
137.1-227
227.9-318
318.7-454
454.9-591
591.1-681
681.9-908
Crown Blocks. For crown block design, see API Specification 4F. Crown block
sheaves and bearings shall be designed in accordance with API Specification 8A.
Spacer Plates. Spacer plates of traveling blocks, not specifically designed to
lend support to the sheave pin, shall not be considered in calculating the rated
capacity of the block.
Sheave Pins. In calculations transferring the individual sheave loads to the pins
of traveling blocks, these loads shall be considered as uniformly distributed over
a length of pin equal to the length of the inner bearing race, or over an
equivalent length if an inner race is not provided.
Deslgn Factor. The design safety factors shall be calculated as follows (see
Figure 4-12) for the relationship between the design safety factor and rating: