International Workshop on National Registers
of Radioactive Sources Vienna, Austria, from
20 to 23
by: Abbas Yassin
Sudan Atomic Energy
Radiation Safety
Radioactive Waste unit
Introduction
• Use of radioisotope in Sudan started 65
years ago
• Radioactive waste management program
started 1995
• Act and regulatory authority are in place
• Radioactive waste management
regulations enacted since 1998
• Waste management facility established in
2000
Status of Waste Management Facilities
Waste Facility consist of :
Work area (lab)
 Cargo container (shortlived and/or waiting for
conditioning)
Storage
Waste Storage
Storage
3x4 meter
Operating area
lab
container
WASTE MANAGEMENT FACILITY
Storage (1)
Door
Door
Cemintation area
Storage (2)
Door
Extraction hood
Work bench
Laboratory
Wash basin
Door
Work bench
Door
Status of Sources Inventory
RWMR being used for registrationTotal of sources in facility 376
Radionuclide
Co-60
Sr-90
Am-Be
Ir-192
Ra-226
Cs-137
No of
Source
4
4
1
9
7
6
2
2
2
319
5
15
Status
Comments
Conditioned
Conditioned
unconditioned
Conditioned
Conditioned
Conditioned/
unconditioned
SHARS, By necsa/2009
Sealed, By necsa/2009
SHARS, Waiting for con/ transp
By necsa/2009
By saec/2003/2006
By necsa/2009
Waiting for con
Conditioned
unconditioned
Conditioned
Conditioned
unconditioned
By necsa/2009
By iaea/2003
By saec/2003/2006
Waiting for conditioning
Introduction
Sealed High Active Radiation Sources
(SHARS)
4 Sealed High Active Radiation Sources
were conditioning
Source
Activit
y now
Manufacture
Origin
USE FOR
Source
located
Statues
Gamma cell
Co-60
50 Ci
India
IAEA
Irradiator
project 1975
Waste
facility
spent
Gamma cell
Co-60
50 Ci
India
IAEA
Irradiator
project 1976
Waste
facility
spent
Teletherapy
unit Co-60
500 Ci
Britain
(Mobiltron)
Donation
1984
Medical
source
Waste
facility
Spent
Gamma cell
Co-60
7 KCi
MDS
Nordion
IAEA
project
Irradiator
SAEC
In-use
Introduction
The Radioactive Waste Registry
• Hard Document File System(HDFS)
• RWMR (soft ware )
• National Sources Tracing System(soft ware)
The Radioactive Waste Registry
HDFS
Hand, Fax
SNRRA
RWMR
NSTS
Introduction
Hard Document File System
wipe test
 surface dose
Nuclide
Source serial number
Manufacture
Use for
Introduction
Hard Document File System
Physical form
Activity
Activity date
Country of origin
Container number
Container model
NO-11 :
.
:
.
:
Ir-192
Ir-192
Nether Land
Isotopes – Technik –
Dr-SAUERWEIN
2
3
5
6
100 mCi
Null
11.4µSv/h
1.6 µSv/h
Industrial Source
D/2012
12
13
14
Introduction
RWMR
RWMR being used for registration
Complicated
For large number of sources
Need extensive training
Introduction
Difficulties and challenges:
Complete NSTS
Link between waste soft and SNRRA
 Registry of orphan sources
RWMR is very Complicated
RWMR Need extensive training
Training to reduces human errors