RADIATION - DOUBLE WALL SINGLE IMAGE-DWSI.ppt

NDT - Radiography - Radiation Penetrates Two walls and images

1. 08/06/24
1
DOUBLE WALL SINGLE
IMAGE-DWSI
RADIATION PENETRATES TWO
WALLS AND IMAGE IS OBTAINED
FOR A SINGLE WALL FOR
INTERPRETATION.

2. 08/06/24 2
DWSI – EXPOSURE SETUPS.
 ENERGY OF THE RADIATION SHALL BE
SUFFICIENTLY ENOUGH TO
PENETRATE TWO WALLS.
ONE IMAGE IS OBTAINED AND
INTERPRETED FOR ONE WALL ONLY.
THE SELECTION OF IQI IS BASED ON
SINGLE WALL THICKNESS ONLY
INTERPRETATION, ACCEPTACNCE OR
REJECTION IS BASED ON SINGLE
WALL THICKNES

3. 08/06/24 3
DWSI CONFIGURATIONS
 SOURCE *
 *

4. 08/06/24 4
SWSI SETUPS
 *S
*
*

5. 08/06/24 5
SWSI
SHALL BE PRACTICED
WHENEVER PRACTICABLE.
SFD= t(f/ug+1)
IQI ON SOURCE SIDE ONLY
THICKNESS PENETRATION OF
EXTREEME CONE OF RADIATION
SHALL NOT BE MORE THAN 1.1t
SINGLE WALL EXPOSURE AND
SINGLE WALL VIEWING.

6. 08/06/24 6
SWSI EXPOSURE SET UPS
 *
*

7. 08/06/24 7
Costs
List new projections of costs
–Include original estimates
•Understand source of differences in these
numbers -- be ready for questions
If there are cost overruns
–summarize why
–list corrective or preventative action
you’ve taken
–set realistic expectations for future
expenditures

8. 08/06/24 8
Technology
List technical problems that have
been solved
List outstanding technical issues
that need to be solved
–Summarize their impact on the project
List any dubious technological
dependencies for project
–Indicate source of doubt
–Summarize action being taken or
backup plan

9. 08/06/24 9
Resources
Summarize project resources
–Dedicated (full-time) resources
–Part-time resources
–If project is constrained by lack of
resources, suggest alternatives
Understand that customers may
want to be assured that all possible
resources are being used, but in
such a way that costs will be
properly managed

10. 08/06/24 10
Goals for Next Review
Date of next status update
List goals for next review
–Specific items that will be done
–Issues that will be resolved
Make sure anyone involved in
project understands action plan