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Survey of procedures Asse

Disposal > Repository Surveillance > Survey of procedures Asse

Survey of procedures using the example of the Asse mine
Endlager AsseYou will find here a survey of measures and procedures where Repository Surveillance needs to be involved, using the example of the Asse mine. Among them are e. g. clearance of works to be examined for compliance with the specifications of the Radiation Protection Ordinance (in German), applications for approval according to nuclear law, and clearance according to § 29 of the Radiation Protection Ordinance.

The implementation of reliability examinations according to the nuclear law Reliability Examination Ordinance (atomrechtliche Zuverlässigkeitsüberprüfungsverordnung, AtZüV) (in German) in the field of responsibility of the Repository Surveillance.

Clearance of works

It is necessary that the Repository Surveillance gives clearance of work when activities are to be carried out underground, for which it cannot be ruled out that open contamination occurs. In the procedure it is especially examined whether the measures planned by the operator are sufficient for occupational radiological protection.

Current clearance of works/notices  (first quarter 2012)
Approval/notice
by EÜ
No current clearance of works/notices at the moment

Applications for approval

All modifications of the Asse II mine that are relevant according to nuclear law require the approval of the Repository Surveillance. Among others, it is examined whether the specifications of the NMU catalogue of measures are complied with, in particular the measure MN 8.3-1.

Current applications for approval (first quarter 2012) Approved
by EÜ on
Approval:
Approval of replacing probes to measure the dose rate
 09.01.2012
Approval:
Approval of clearing works to carry out a control drilling prior to backfilling of roof clefts
 09.01.2012
Approval:
Approval of applying work instruction “replacement of radiological filter”
 12.01.2012
Approval:
Approval of applying work instruction “Pumping of contaminated brines”
 17.01.2012
Approval:
Approval of clearing works to pump and clean a brine channel
 20.01.2012
Approval:
Approval of modifying the separating element in the preventer stack and adding a countercurrent
unit in the context of fact finding step 1
 14.02.2012
Approval:
Approval of applying inspection instruction “Periodic inspection of the sampling rake and the
supply to the emission monitoring aerosol monitor"
 20.02.2012
Approval:
Approval of applying a measuring instruction
 21.02.2012
Approval:
Approval of applying work instruction “Personal protective equipment”
 22.02.2012
Approval:
Approval of clearance of works to construct a dam structure on the 925-m level
 22.02.2012
Approval:
Approval of applying work instruction “Loss of purge air during drilling”
 01.03.2012
Approval:
Approval of clearance of works to carry out a core drilling
 01.03.2012
Approval:
Approval of taking into operation a wipe test device and of a measurement and inspection instruction
 06.03.2012
Approval:
Approval of clearance of works to scale and, if needed, secure walls and roofs
 		06.03.2012
Approval:
Approval of clearance of works to prepare a place for power distribution
 09.03.2012

Clearance according to § 29 Radiation Protection Ordinance

The clearance of radioactive substances is regulated by the provisions of § 29 Radiation Protection Ordinance. In the event that radioactive substances are to be cleared for being released from the scope of the Atomic Energy Act, it must be ensured that a dose of 10 microsievert per calendar year is not exceeded by an individual person of the population due to these substances.

The proof to be submitted by the operator can be furnished in different ways. In the clearance procedure it is examined by the Repository Surveillance. After clearance has been given, the substances cleared in this way are no more considered radioactive substances and can be used or disposed of as planned. According to the provisions of the Radiation Protection Ordinance, the classification as "unrestrictedly" and "restrictedly" cleared is made with respect to a non-determined or determined application or disposal path.

Current clearances (first quarter 2012) EÜ granted
clearance
on
Clearance:
Unrestricted clearance of a batch of wood
 10.01.2012
Clearance:
Unrestricted clearance of a vehicle
 10.01.2012
Clearance:
Unrestricted clearance of a batch of plastics		 11.01.2012
Clearance of influent saline solution:
Restricted clearance of influent saline solution with the charge 2012/001 for being taken to the Mariaglück mine		 12.01.2012
Clearance:
Unrestricted clearance of two batches of metal scrap
 23.01.2012
Clearance:
Unrestricted clearance of a batch of blower line tubes		 24.01.2012
Clearance:
Unrestricted clearance of watery conventional operational waste 		26.01.2012
Clearance:
Unrestricted clearance of saline solution samples
 27.01.2012
Clearance:
Unrestricted clearance of solid construction material samples		 27.01.2012
Clearance:
Unrestricted clearance of two batches of compressors		 30.01.2012
Clearance:
Unrestricted clearance of a batch of compressors
 02.02.2012
Clearance:
Unrestricted clearance of two batches of metal scrap		 02.02.2012
Clearance:
Unrestricted clearance of a vehicle		 03.02.2012
Clearance:
Unrestricted clearance of a batch of metal scrap
 03.02 .2012
Clearance:
Unrestricted clearance of a batch of electronic waste and laboratory inventory		 07.02.2012
Clearance:
Unrestricted clearance of a batch of drill piping		 07.02.2012
Clearance:
Unrestricted clearance of a batch of plastics 		10.02.2012
Clearance:
Unrestricted clearance of a batch of electronic waste and laboratory inventory
 10.02.2012
Clearance:
Unrestricted clearance of a batch of hoses 		22.02.2012
Clearance of influent saline solution:
Restricted clearance of influent saline solution with the charge 2012/002 for being taken to the Mariaglück mine
 22.02.2012
Clearance:
Restricted clearance of saline solutions for internal use
 06.03.2012
Clearance:
Unrestricted clearance of a batch of ducting 		15.03.2012
Clearance:
Unrestricted clearance of a batch of metal scrap 		15.03.2012
Clearance:
Unrestricted clearance of a vehicle
 19.03.2012

Inspections/periodic inspections/special occurrences

Periodic plant inspections are an important and essential part of supervisory activities. With this tool the Repository Surveillance can examine whether radiation protection measures, construction works, and installations comply with the current licences and legal bases or whether, and to what extent, improper changes are made.

Furthermore, the operational readiness of facilities, systems, and components is ensured through periodic inspections of particularly the radiation protection instrumentation.
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