Table 1:- Parameters for Gamma Ray Radiographic Qualification Of 36 " Diameter Butt weld
I. CLIENT NAME / CONTACT NAME:
Date Test Conducted:
JOB DESCRIPTION / JOB NO.:
QUALIFICATION NO.: Gamma Ray Procedure
SPECIFICATION: API 1104
MATERIAL: API 5LX 65
PIPE SIZE: 36" nominal
WALL THICKNESS: .938” W.T. A . Radiation Source
1. Type of SourceGamma Ray: Gamma Ray-Gamma Iridium 192
2. Type of EquipmentInternal: Internal
B . Intensifying Screens
1. Type of Screens: LeadThickness: 0.005"
2. Placement: Front and Rear C . Film
1. Film Type: Agfa D42. Number in Cassette: One3. How Film is Viewed Dry
D . Exposure Geometry 1. Method: SWE/SWV
2. Focal Spot Size: .153” 3. Source-Film Distance: 18" 4. Object Film Distance: .938 " 5. Radiation Angle to Object: 90 degrees6. Heat Shield: N/A 7. No. Exposures per Weld: One8. Geometric Unsharpness 0.008"
9. Density 2.0- 4.0 10. Sensitivity Film Side 2% source side 2%
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Table 1:- Parameters for Gamma Ray Radiographic Qualification Of 36 " Diameter Butt weld
SWE /SWV 0.938 "
E. Exposure Conditions
1. Milliamperes: Time: N/A
2. Curies: 46 ciTime: 6min 36 sec.
F . Processing
1. Automatic: AutomaticManual:(check one)
2. Development: Time:Temperature:
3. Cycle Time - Wet Viewing: N/A
4. Cycle Time - Dry Viewing:
G . Penetrameters
1. Type: ASTM Standard Wire Type Penetrameters
2. Identifying No.: 1 ASTM B
3. Material: Steel
4. Geometric Unsharpness: 0.02 inches or better
5. Sensitivity to be Achieved: 2.0% or better
6. Placement: 1 penetrameters on centre of each film
H Density Range 2.0 -4.0 through the thickest portion of weld metal.
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