Radiating%20Scrap%20-%20An%20Industry%20Perspective%20- - PowerPoint PPT Presentation
Title:
Radiating%20Scrap%20-%20An%20Industry%20Perspective%20-
Description:
No smelter will accept radiating scrap. The scrap processing Industry will ... An astonishing variety in objects (several hundreds), total weight over 50 tons ... – PowerPoint PPT presentation
Number of Views:49
Avg rating:3.0/5.0
Title: Radiating%20Scrap%20-%20An%20Industry%20Perspective%20-
1
Radiating Scrap- An Industry Perspective -
- G.A. van der Reijden
- QA Consultant
- gavdreijden_at_planet.nl
2
Summary
- No smelter will accept radiating scrap
- The scrap processing Industry will do its utmost
to prevent to sending radiating scrap - Extensive monitoring of all scrap for radiating
material has proven to be successful - Potential Solutions for low Radiating Scrap
3
Unwanted Radiating Material
- The ISO 9000 demands of the Supplier to meet the
specifications of the Client. - The Clients demands
- No detectable Radioactivity in scrap
4
Why No Radiation ?
- The most important process of the smelter is
melting metal in a furnace in order to make new
metal products. - This process will stop when a radioactive source
is melted down. - The damage of such an event is tremendous for all
parties involved. - Any possibility for such an introduction must be
avoided - Every alarm is forbidden and a disaster for the
sender of the scrap
5
How to Deliver Scrap Without Detectable
Radioactivity
- It is impossible to monitor the amount of
radioactivity in each scrap object. - Therefore the scrap industry has concentrated on
measuring the likely emission of Gamma radiation
produced by most common radioisotopes. - The detection process must be more advanced than
the detection process of the Smelter.
6
Return To Sender
- The first measurement of radiation is carried out
by the gate monitor. - This is the only chance to identify the sender of
detected radioactive material - Return to sender is a theoretical option
because it is extremely difficult to succeed in
returning radioactive material.
7
(No Transcript)
8
One Gate Detector is Insufficient
- Not one supplier of detection equipment will
guarantee the 100 detection of radioactive
material. - From experience we know now that one gate
detector does not detect all radiating objects.
9
To Satisfy the Client !
- We introduced a new policy after a serious
incident. - Besides the existing gate detector system two
more gate detectors were erected in one portal. - Every gripper for moving scrap was equipped with
state of the art detection equipment - The policy was named multi measuring of various
scrap configurations
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
The Results of the New Policy
- In the last 250 000 tons of scrap delivered in
one year not one radiating object was found by
the Client
16
What Was Found ?
- An astonishing variety in objects (several
hundreds), total weight over 50 tons - NORM and ARM contaminated.
- Surface and volumetric.
- License and No License needed
17
Solutions for Radiating Materials that need a
Licence
- Cleaning
- Removing the radioactive material by water
jetting grinding or chemical. - At the NRG
- Melting
- In a facility like the ones at Siempelkamp
Germany and Studvic - Storing
- at National facilities COVRA.
18
Solutions for low radiating objectsthat do NOT
Need a licence
- As the regular scrap processing industry can not
accept detectable radiating material, a solution
must be found. - The owners of such material must be convinced
that they have to find a good solution for their
problem. - Oil and Gas producers
- Nuclear Industry
19
How to Solve the Issue of Low radiating scrap
material
- Recognition that there is an issue !
- UN should take a leading role !
- Potential technical solutions
- The special melting capacity should be increased
- Like the Siempelkamp facilities
- New refinery methods of metals should be
developed - To separate radioactive metals
