1. CTBT-laboratory activities in STUK
Jani Turunen
Inspector, PhD
FIL07 Official
Environmental Radiation Surveillance and Emergency Preparedness
Radiation and Nuclear Safety Authority (STUK)

2. CTBTO
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans all nuclear explosions
The CTBT was negotiated in 1996
44 specific nuclear technology holder countries must sign and ratify the treaty before the CTBT can enter into force.
The Preparatory Commission for the CTBTO was founded in 1996 and it is based in Vienna.
Signs of nuclear explosions are monitored with the International Monitoring System (IMS). It will consist of 337 facilities worldwide, when completed.
Data from the IMS monitoring stations is sent to The International Data Centre (IDC) at the CTBTO's headquarters in Vienna.

3. Comprehensive Nuclear-Test-Ban Treaty
States, whose signature and ratification are required for the Treaty to enter into force are listed in the CTBT, Annex 2.
States that have signed and ratified the Treaty
States that have signed the Treaty and are current members of the Preparatory Commission for the CTBTO
States that have neither signed nor ratified the Treaty

4. International Monitoring System (IMS)
Total 337
Certified 283
Installed 19
Under construction 17
Planned 18
Primary Seismic
Auxiliary Seismic 120
Infrasound
Hydroacoustic
Radionuclide
Radionuclide Laboratories 16

5. IMS Radionuclide Stations
Total 80
Certified 63
Installed 4
Under construction 9
Planned 4
40 Radionuclide Stations will have
the capability to detect noble gases

6. IMS Radionuclide Laboratories
FIL07
GBL15
RUL13
ATL03
USL16
CAL05
FRL08
JPL11
ITL10
ILL09
CNL06
BRL04
ARL01
ZAL14
Total 16
Certified 12
Installed 4
Under construction 0
Planned 0
AUL02
NZL12
Radionuclide Laboratories supporting the monitoring network:
Buenos Aires (AR), Melbourne (AU), Seibersdorf (AT), Rio de Janeiro (BR),
Ottawa (CA), Beijing (CN), Helsinki (FI), Bruyères-le-Châtel (FR),
Yavne (IL), Rome (IT), Tokai (JP), Christchurch (NZ),
Moscow (RU), Pelindaba (ZA), Aldermaston (GB), Richland (US)

7. Roles of the 16 Radionuclide Laboratories
Station samples for radionuclide network quality assurance
Station back-up samples when a station is down
Samples from station visits
Proficiency test exercise samples, one each year
Special measurements agreed between the laboratory and the Commission
Additional sample analysis of a suspect or irregular sample to verify the presence or absence of fission and/or activation products

8. Radionuclide laboratory FIL07
STUK hosts one of the CTBTO IMS radionuclide laboratories, FIL07
FIL07 was certified in
Hosted by the Environmental Radiation Surveillance and Emergency Preparedness Department (VALO) of STUK
Most part of management, analysts and laboratory personnel from the Environmental surveillance and measurement laboratory (VAM)
Analysts and lab personnel also from other units/departments of STUK.

9. FIL07 Organizational details
The quality manager of the VALO department is also the head of FIL07. The Head of FIL07 formally approves the quality manuals and is responsible for providing needed resources to FIL07.
The FIL07 Official is responsible for maintaining the FIL07 quality system and FIL07 specific infrastructure, IMS sample analysis, daily operations and preparedness, periodic reporting and FIL07 specific aspects of QA/QC program, maintaining relations to PTS and taking part into national CTBTO related work (WGB meetings, workshops, national meetings, etc..).
VAM laboratory is responsible for QA/QC program components common with the ISO/IEC requirements, counting rooms and spectrometer upkeep and providing analysts for FIL07

10. STUK gamma laboratory facilities
Two low background counting rooms:
Construction from selected concrete and mortar with low abundance of natural radionuclides
Special air ventilation and continuous radon monitoring (radon levels ~3Bq/m3)
≈ 15 HPGes in vertical cryostats (LN/electric)
Pb BG-shielding
ISO/IEC accreditation.
Currently one certified spectrometer for IMS sample analysis
Certification of a second spectrometer under way

11. FIL07 hardware and software
LN cooled Canberra BEGe-5030 spectrometer (48% rel. eff.)
13 cm lead shield
Ortec Dspec Pro
Unisampo acquisition software
Unisampo-Shaman analysis software
Linssi database
Physically separate LAN, firewalled access
Satellite connection based GCI link
Electronic Document Management System – SAHA

12. FIL07 software and database
Unisampo acquisition software (interfaces with the Ortec Dspec Pro MCA)
Unisampo-Shaman analysis software
Peak analysis in Unisampo, Shaman runs the nuclide identification engine
Linssi 1.1 database, lab specific web interface and message management
Messages, calibration, sample, measurement and analysis data in the database
Generation and management of messages between FIL07 and IDC
Automatic incoming and outgoing message processing and database input
Automatic sample generation into database from PRESDN and LABSDN messages
Sample information updated for lab-pressed samples
Measurement and analysis data input (from Unisampo and Shaman )
Analysis reports output (PHD, RLR)
Runs on a linux server
Dedicated authentication server (digital signature to outgoing messages)
Sample chain-of-custody records are updated in the Linssi database as the sample is processsed trough the various stages in the analysis chain

13. Web interface
Web interface for generating messages and sample tracking

14. FIL07 sample preparation and storage
Dedicated sample preparation and storage room for IMS samples
Limited access
Locked cabinet for IMS samples
Separate facilities for high activity samples

15. IMS sample types
IMS samples include three different types of filter samples RASA, Manual50 and Cincerella.
Manual50 samples are compressed to optimal geometry in the stations. No sample preparation needed in the lab.
Cinderella filters are measured in stacks.
RASA filters are delivered to the lab as whole filters and they are compressed in the lab.
Manual50
RASA
Cinderella 

16. Measurement and analysis chain
Sample related Linssi tables updated automatically from PRESDN and LABSDN messages (a new sample or existing sample data updated or amended)
Sample preparation for HPGe measurement
updating the sample data in the Linssi database via web interface
measurementSetup information
Generation of null phd with calibration and sample data
Sample measured using Unisampo software (1-7 d)
sample data from the null phd to Unisampo when starting the measurement
Spectrum is saved at regular intervals (as a phd file)
Manual analysis using Unisampo-Shaman
Phd file is manually read in
Analysis results saved to Linssi (manual save)
Automated pipeline is not in use
Report (PHD, RLR) generation from the Linssi web interface
Lab message pipeline autheticates and pushes the results into GCI
Results have to be reported in 15 days from sample arrival

17. Other FIL07 tasks
Analysed samples are returned to Vienna at least four times a year.
Quarterly Laboratory Operations Report and billing
Proficiency Test Excercise (PTE) every year
Surveillance Assessment Visit (SAV) once in three years
Working Group B meetings in Vienna twice a year
Laboratory workshops once in two years