API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

3.B-2 API RECOMMENDED PRACTICE 581
3.B.2 Tables
Table 3.B.2.1—SI and U.S. Customary Conversion Factors for Equations in Part 3
Conversion
Factor
Equation
Reference
C
1
(3.3)
C
2
(3.6), (3.7)
SI Units
31,623 mm 2
m
1,000 mm 2
m
2
2
U.S. Customary Units
12 inch
ft
1
C
3
(3.12) 4,536 kg 10,000 lb
C
4 A
(3.18)
1
2.205 kg
1
1 lb
C
4B
(3.63),
(3.64),
(3.72),
(3.109),
(3.110)
2.205 sec
kg
C
5 (3.19), (3.71) 25.2 kg
sec
1 sec
lb
55.6 lb
sec
C
6
(3.25) 55.6 K 100 o R
C
8
(3.63),
(3.64),
(3.A.7),
(3.A.8)
2
0.0929 m
2
1ft
C
9
(3.69)
2
0.123 m ⋅ sec
2
kg
0.6
ft ⋅ sec
lb
C
10
(3.70)
m
9.744
kg
2
0.06384
ft
63.32
kg
2
0.06384
C
12
C
13
C
14
(3.90),
(3.110),
(5.11)
(3.91),
(3.221),
(5.41)
(3.103),
(3.138),
(3.152),
(3.162)
1
1
1.8 K o R
6.29 bbl
3
m
0.178 bbl
3
ft
1 3,600 sec
hr
C
15
(3.105)
0.33
4.685 m S 0.22
1
2
in
ft S
1.67 0.22