1. Application for Working as Visitor User in Radiation Areas of RCNP (RCNP due form) HTML , PDF
2. Approval for Working in Radiation Areas ( RCNP due form) HTML , PDF
3. A copy of Medical Certificate to occupy in radiation and/or contaminated area.
--- These papers are effective only within the Japanese fiscal year.
If you continue tp work beyond the fiscal year, you have to prepare it
again every fiscal year.
ID card to enter the Radiation Area (both AVF and Ring Cyclotron Building)
The card is necessary also to enter the individual experimental halls in the Ring Cyclotron building. You are able to monitor who is in the halls on CRT distributed somewhere in the building.
The ID card -- named or short period co-user's -- is issued for registered persons, effective for the duration of staying at RCNP. Please return it at the Radiation Regulation Office when you are leaving.
There are two ways to enter the Radiation Areas -- at the AVF entrance and at the Ring first floor.
1. Radiation Regulation Areas
:Primary Regulation Area; Cyclotron vaults and Experimental Halls. Beam and RI source are available; contamination is possible; wear yellow shoes.
:Secondary Regulation Area; Console, Counting Rooms and Power supply, Cooling Rooms.
RI source not available; no contamination, no irradiation, wear red shoes or slippers.
Wash your hands and check contamination by hand-foot monitor at decontamination site between Primary and Secondary Regulation Areas.
Personal Monitoring
For monitoring your integrated irradiation, it is advised to use your home monitors for your lifelong irradiation history. Additionally you should wear our Dose-Meter to check the irradiation at RCNP during your stay. Check and record by yourself at least once a week on the separate sheet in the monitoring file at the Radiation Regulation Office.
We tentatively set up a critera that the maximum irradiation for visitors is restricted to within 0.03 m Sv/ day. Report to the Regulation Office if you have been irradiated exceeding the critera.
Indication at Entrance of Experimental Hall
Normally you enter the hall through the underground passage. When you enter the hall, check the indicator on the wall near the entrance; the rotary shutter in the concrete wall between the hall and the cyclo-vault be closed, the radiation ( gamma and neutron) level and contamination of air are in "safe".
Bring the "Safety-Key" which interlock to open the rotary shutter. If radiation and or contamination are in "warning", you may enter the hall for the time being, but you will hear the warning siren. Of cource in "Danger" level (equivalent to more than 0.02 mSv/hour), the entrance door is closed by the interlock.
Notice that the scattering chamber and beam ducts are locally activated strongly (sometimes spatial dose rate exceeds 0.2 mSv/h near the ducts).
If necessary, you should find a survey meter ont he desk at the entrance door of the hall to check the radioactive level.
Guide Beam to the Hall
All persons must leave the hall, all the "Safety -Key"s must show on the indicator, the "Safety-Switch"s in the hall should be released, all doors should be closed, and then the "Run-Away" button should be pushed. Then you can open the rotary shutter of the hall.
Last Updated on May 27,2002