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
Fig. 328.5.5 Typical Fabricated Laps
T2> T
/ T2 T T2> T T2>—-f T2> TTRadius
Y
0.7 (T—c) 0.7 (T-0 0.7 (T-0
I I i
(a) (b) (C) (d) (e)
GENERAL NOTE: Laps shall be machined (front and back) or trued after welding. Plate flanges in accordance with para. 304.5 or lap joint
flanges in accordance with ASME B16.5 may be used.Welds may be machined to radius, as in sketch (e), if necessary to match ASME B16.5
lap joint flanges.
Table 330.1.1 Preheat Temperatures (16)
Base Greater
Metal Material
P No Thickness Additional Limits Required Minimum Temperature
[Note(1)] Base Metal Group mm in. [Note(2)] °C °F
1 Carbon steel <25 <1 None 10 50
>25 >1 %C<0.30 [Note (3)] 10 50
>25 >1 %C>0.30 [Note (3)] 95 200
3 Alloy steel, Cr<_ '/'% <-13 <_'/' SMTS<_450 MPa (65 ksi) 10 50
>13 >'/z SMTS S 450 MPa (65 ksi) 95 200
All All SMTS>450 MPa (65 ksi) 95 200
4 Alloy steel, '/z%<Cr<2% All All None 120 250
5A Alloy steel All All SMTS<414 MPa (60 ksi) 150 300
All All SMTS>414 MPa (60 ksi) 200 400
5B Alloy steel All All SMTS<414 MPa (60 ksi) 150 300
All All SMTS>414 MPa (60 ksi) 200 400
<13 <'/z %Cr>6.0 [Note (3)] 200 400
6 Martensitic stainless steel All All None 200 [Note (4)] 400 [Note (4)]
9A Nickel alloy steel All All None 120 250
9B Nickel alloy steel All All None 150 300
101 27Cr steel All All None 150 [Note (5)] 300 [Note (5)]
15E 9Cr-1Mo—V CSEF steel All All None 200 400
... All other materials ... ... None 10 50
NOTES:
(1) P-Nos. and Group Nos.from BPV Code, Section IX, QW/QB-422.
(2) SMTS = Specified Minimum Tensile Strength.
(3) Composition may be based on ladle or product analysis or in accordance with specification limits.
(4) Maximum interpass temperature 315°C (600°F).
(5) Maintain interpass temperature between 150°C and 230°C (300°F and 450°0.