Safety Concept for radioactive samples at the beamline

Your safety concept (upload as max. 6 pages pdf in DOOR/chemistry declaration) is a part of our DESY Photon Science risk assessment at the beamline. It helps us to identify risks and to define safety measures for a safe and successful preparation. For further questions please contact us on photon-science.safety-managers@desy.de.

General rules for radioactive samples: total amount of all samples below the regulation limit, fixed samples only (no gases, liquids or powders), no open compounds, no manipulation on DESY campus. Samples from a material balance zone cannot be accepted. No enriched material. The total dose rate must be below 5µSv/h in 30cm. After the beamtime all samples have to leave the DESY campus.

Your safety concept should at least cover the following:

Shipment to DESY and shipment back to home institute

Type of shipment (parcel, brought by users via car etc.). Name the person who is responsible for the transport, owner of the samples, DESY contact.

Samples shipped/brought to DESY: day/month/year

Samples will leave DESY:	day/month/year

Preparations done at home institute before beamtime

e.g., mounting samples, glueing on sample holders at home institute xy, sealed in plastic bag etc.

Activity onsite DESY during beamtime

E.g. measurement of mounted samples, placement in cryostat, store under vacuum, samples will be locked in DESY safe when not in use.

Sample description (see example of a table of samples)

Sample no.	Sample	Dimensions	Volume mm³	Density g/cm³	Total mass mg	Mass f. u.	U mass f. u.	Relative U mass %	U type	U activity Bq/mg	U activity Bq
#1	UO2	0.7	11.0	7.7	270	238	88	depleted	25	169
#2	natural
Total activity ∑169

Photos of samples/sample holder

Risk assessments of the work with registered substances, sample environment, equipment, activities and transport.

Please indicate the risks that can appear during the work with the registered substances, sample environment, activities and used equipment. The risks during the transport to the beamline and back should be considered as well. Indicate explicitly what kind of precautions should be taken to avoid/minimize the listed risks. Please consider the substitution of dangerous compounds and the reduction of the total amount of used chemicals whenever it is possible.