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Radiation Protection info update. 17 th LTEX Meeting 21 .03.2013. C. Adorisio (DGS/RP). Radiological Classification. Radiological Classification. Radiological Classification. Radiological Classification. RP Training Courses. Is DIMR needed?. Is DIMR needed?.

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radiation protection info update

Radiation Protection info update

17th LTEX Meeting

21.03.2013

C. Adorisio (DGS/RP)

radiological classification
Radiological Classification

LTEX Meeting, March 21st - 2013

radiological classification1
Radiological Classification

LTEX Meeting, March 21st - 2013

radiological classification2
Radiological Classification

LTEX Meeting, March 21st - 2013

radiological classification3
Radiological Classification

LTEX Meeting, March 21st - 2013

rp training courses
RP Training Courses

LTEX Meeting, March 21st - 2013

is dimr needed
Is DIMR needed?

LTEX Meeting, March 21st - 2013

is dimr needed1
Is DIMR needed?

LTEX Meeting, March 21st - 2013

trec traceability of radioactive equipment at cern
TREC (Traceability of Radioactive Equipment at CERN)
  • The TREC system is present in each buffer zone:
    • Touch screen and bar-code reader
    • Bar-code stickers
  • TREC training course on SIR: http://sir.cern.ch

LTEX Meeting, March 21st - 2013

trec traceability of radioactive equipment at cern1
TREC (Traceability of Radioactive Equipment at CERN)
  • All the materials, included waste, coming out from the LHC tunnel, have to be registered in TREC and left in the buffer zone to be controlled by RP
  • The equipment too big to be left in the buffer zone they could be temporary left outside the buffer zone (but this has to be previously agreed by RP)
  • All the transports of radioactive material

have to be done with the RP authorization

(fiche jaune)

LTEX Meeting, March 21st - 2013

radioactive material transport
Radioactive material transport
  • All the radioactive material internal transport (intra and intersites):
    • EDH transport request (TNRQ)

or

    • material stackage request (STOCK);
  • RP authorization is mandatory (fiche jaune)
  • CERN car is mandatory
  • If the dose rate at contact is higher than 5 µSv/h, the transport has to be done by EN/HE
  • Rules: EDMS 1198577

LTEX Meeting, March 21st - 2013

new dmc reading system
New DMC reading system
  • Automatic reading and logging in a new RP database with new electronic DMC readers (LDM)
  • Link between IMPACT and the Operational Dosimetry system: the IMPACT number will have to be typed on the LDM
  • In addition to be logged in the RP database, the doses will be kept in the IMPACT database

LTEX Meeting, March 21st - 2013

dmc pool mode
DMC: Pool Mode

Assigned dosimeters

Pool dosimeters

  • The dosimeter is assigned to a worker, when the dose is read it is automatically logged into the RP database (DB) under his/her name
  • The user only have to type the IMPACT number on the reader.
  • The dosimeter is not assigned to a worker, when he/she access he/she needs to type first his/her CERN ID and then he/she has to type the IMPACT number on the reader.
  • At the reading, the dose is automatically registered under his/her name in the DB

Before accessing

Type the IMPACT number

Type your CERN ID

Ready to access

At exit: after reading

LTEX Meeting, March 21st - 2013

dmc second phase
DMC: second phase

In future

  • Second step of the project: during LS1, in compliance to the recommendations from the Host States Authorities (ASN/OFSP), the DMC will become mandatory in the Simple Controlled Radiation Areas. Meanwhile: usually no need to borrow a DMC for the work in Simple Controlled Radiation Area or in Supervised Radiation Area (except DIMR II/III)
  • At the beginning, a list of the active IMPACT numbers will be displayed next to each DMC reader and will be kept up to date by RP (weekly). At a later stage we will investigate the possibility to simplify this feature.

LTEX Meeting, March 21st - 2013

in case of problem
In case of problem?
  • Alarm: leave the area immediately and contact the Radiation Protection Service for the concerned area:
    • Meyrin, tel. : +41 22 76 72504
    • Prévessin, SPS & LHC, tel. : +41 22 76 75252
  • Technical problem (battery, DMC HS, LDM HS, etc….), please contact the Operational Dosimetry Service:

LTEX Meeting, March 21st - 2013

optimization during design material choice
Optimization during design Material choice

Goal:

    • Minimize doses received by personnel during maintenance and repair
    • Reduce costs for waste disposal
  • Consider radiological hazards in the choice of construction materials

Tool to optimize material choices:

ActiWiz

(Authors: C.Theis and Helmut Vincke)

  • Computer code based on a risk model using pre-calculated FLUKA results. Considers external exposure and radioactive waste disposal
  • Provides radiological hazard assessment for arbitrary materials within a few seconds
  • Catalogue, produced with ActiWiz, listing pre-processed risk factors for typical accelerator construction materials as well as natural elements
  • Web-based catalogue (ActiWeb) allowing user friendly comparison of pre-processed materials
  • Materials not available in the catalogue can be processed with ActiWiz

Web-site: https://actiwiz.web.cern.ch/

LTEX Meeting, March 21st - 2013

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