Quantcast Stress-Relieving Procedure

 
  
 
TABLE 1
________________________________________________________________________
(1)
(2)
(3)
(4)
(5)
Pipe
Pipe Radius
Pipe
Maximum
Grind-Not
Diameter
or Distance
Thickness
Offset
More Than
Millimeters
Millimeters
Millimeters
Millimeters
Millimeters
600
300
10
1.6
2.4
750
375
10
1.6
2.4
900
450
10
2.4
2.4
1050
525
13
2.4
3.2
1200
600
13
3.2
3.2
1350
675
13
3.2
3.2
1500
750
19
4.0
4.0
1800
900
25
4.0
4.0
2100
1050
29
4.8
6.4
________________________________________________________________________
TABLE 1
________________________________________________________________________
(1)
(2)
(3)
(4)
(5)
Pipe
Pipe Radius
Pipe
Maximum
Grind-Not
Diameter
or Distance
Thickness
Offset
More Than
Inches
Inches
Inches
Inches
Inches
24
12
3/8
1/16
3/32
30
15
3/8
1/16
3/32
36
18
3/8
3/32
3/32
42
21
1/2
3/32
1/8
48
24
1/2
1/8
1/8
54
27
1/2
1/8
1/8
60
30
3/4
5/32
3/16
72
36
1
5/32
3/16
84
42
1-1/8
3/16
1/4
________________________________________________________________________
2.1.3.3
Stress-Relieving Procedure
After all fabrication welding is completed, and prior to any machining,
stress-relieve bell by heat treatment.  Contractor shall submit proposed
stress-relieving procedure for approval by Contracting Officer.
2.1.4
Examination of Castings
All castings shall be cleaned and carefully examined for surface defects.
All defects shall be further examined by nondestructive means.  Examination
personnel shall be qualified/certified in accordance with applicable ASTM
requirements.  The examination procedure and qualification of the examiner
shall be submitted for approval.  Examination tests shall be made in the
presence of the Contracting Officer.  The Contractor shall choose the
examination procedure best suited for the application.
2.1.4.1
Examination Procedures
a.
Ultrasonic - Inspection shall conform to the applicable provisions
of ASTM A 609/A 609M.
b.
Magnetic Particle - Inspection shall conform to the applicable
provisions of ASTM E 709.
SECTION 15131A
Page 20


 


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