2021-06-24_REVISION - M2012032

• Permit No: M2012032
• IBM Index Class Name: Revision
• Doc Date: 6/24/2021
• Doc Name: Adequacy Review Response #3
• From: Ouray Silver Mines, Inc.
• To: DRMS
• Type & Sequence: TR14
• Email Name: LJW
• Media Type: D
• Archive: No

ASME B31.3-2016
Table 323.2.2A Tabular Values for Minimum Temperatures Without Impact Testing for Carbon Steel
Materials (See Fig. 323.2.2A for Curves and Applicable Notes)
Nominal Lowest Exemption Temperature
Thickness, T Curve A Curve B Curve C
[Note(6)] [Note(2)] [Note(3)] [Note(3)] Curve D
mm in. °C °F °C °F °C °F °C °F
6.4 0.25 -9.4 15 -28.9 -20 -48.3 -55 -48.3 -55
7.9 0.3125 -9.4 15 -28.9 -20 -48.3 -55 -48.3 -55
9.5 0.375 -9.4 15 -28.9 -20 -48.3 -55 -48.3 -55
10.0 0.394 -9.4 15 -28.9 -20 -48.3 -55 -48.3 -55
11.1 0.4375 -6.7 20 -28.9 -20 -41.7 -43 -48.3 -55
12.7 0.5 -1.1 30 -28.9 -20 -37.8 -36 -48.3 -55
14.3 0.5625 2.8 37 -21.7 -7 -35.0 -31 -45.6 -50
15.9 0.625 6.1 43 -16.7 2 -32.2 -26 -43.9 -47
17.5 0.6875 8.9 48 -12.8 9 -29.4 -21 -41.7 -43
19.1 0.75 11.7 53 -9.4 15 -27.2 -17 -40.0 -40
20.6 0.8125 14.4 58 -6.7 20 -25.0 -13 -38.3 -37
22.2 0.875 16.7 62 -3.9 25 -23.3 -10 -36.7 -34
23.8 0.9375 18.3 65 -1.7 29 -21.7 -7 -35.6 -32
25.4 1.0 20.0 68 0.6 33 -19.4 -3 -34.4 -30
27.0 1.0625 22.2 72 2.2 36 -18.3 -1 -33.3 -28
28.6 1.125 23.9 75 3.9 39 -16.7 2 -32.2 -26
30.2 1.1875 25.0 77 5.6 42 -15.6 4 -30.6 -23
31.8 1.25 26.7 80 6.7 44 -14.4 6 -29.4 -21
33.3 1.3125 27.8 82 7.8 46 -13.3 8 -28.3 -19
34.9 1.375 28.9 84 8.9 48 -12.2 10 -27.8 -18
36.5 1.4375 30.0 86 9.4 49 -11.1 12 -26.7 -16
38.1 1.5 31.1 88 10.6 51 -10.0 14 -25.6 -14
39.7 1.5625 32.2 90 11.7 53 -8.9 16 -25.0 -13
41.3 1.625 33.3 92 12.8 55 -8.3 17 -23.9 -11
42.9 1.6875 33.9 93 13.9 57 -7.2 19 -23.3 -10
44.5 1.75 34.4 94 14.4 58 -6.7 20 -22.2 -8
46.0 1.8125 35.6 96 15.0 59 -5.6 22 -21.7 -7
47.6 1.875 36.1 97 16.1 61 -5.0 23 -21.1 -6
49.2 1.9375 36.7 98 16.7 62 -4.4 24 -20.6 -5
50.8 2.0 37.2 99 17.2 63 -3.3 26 -20.0 -4
51.6 2.0325 37.8 100 17.8 64 -2.8 27 -19.4 -3
54.0 2.125 38.3 101 18.3 65 -2.2 28 -18.9 -2
55.6 2.1875 38.9 102 18.9 66 -1.7 29 -18.3 -1
57.2 2.25 38.9 102 19.4 67 -1.1 30 -17.8 0
58.7 2.3125 39.4 103 20.0 68 -0.6 31 -17.2 1
60.3 2.375 40.0 104 20.6 69 0.0 32 -16.7 2
61.9 2.4375 40.6 105 21.1 70 0.6 33 -16.1 3
63.5 2.5 40.6 105 21.7 71 1.1 34 -15.6 4
65.1 2.5625 41.1 106 21.7 71 1.7 35 -15.0 5
66.7 2.625 41.7 107 22.8 73 2.2 36 -14.4 6
68.3 2.6875 41.7 107 22.8 73 2.8 37 -13.9 7
69.9 2.75 42.2 108 23.3 74 3.3 38 -13.3 8
71.4 2.8125 42.2 108 23.9 75 3.9 39 -13.3 8
73.0 2.875 42.8 109 24.4 76 4.4 40 -12.8 9
74.6 2.9375 42.8 109 25.0 77 4.4 40 -12.2 10
76.2 3.0 43.3 110 25.0 77 5.0 41 -11.7 11