FAQs

Please email the staff member’s name, job title, badge location number, date of birth and when the badge is required for to dosimetry@medray.ie

Please email the staff member’s name, job title, badge location number and date of birth to dosimetry@medray.ie

*Please note that you may still receive badges for a couple of issues after a deletion or edited wearer has been requested as badges are triggered approx. 6-7 weeks before the issue date.

Usually approx. 6-7 weeks’ notice is required for a new badge also but if you select the date it is required for (it may appear to be a ‘Daily’) please select this.*

Each shipment will contain one control packet envelope for each type of dosimeter ordered.  The control packet envelope should be kept in a radiation-free area to ensure effective and valid detection of transit or background radiation.  When dosimeters are not in use, they should be stored with the control packet envelope away from radiation sources.

Under no circumstances should a control badge be assigned to personnel or taken into a radiation area. 

The control badge measures any “background” exposure, which is separate from the exposure a person receives from occupational work.  The control badge is read like any other badge and the amount of radiation found on your control badge (includes natural background and any transit dose) is subtracted from your badge reading.  So if your badge reads 0.20 mSv and the control badge is 0.10 mSv then your dose is 0.10 mSv. 

Therefore, you should always send the control badge back so we can report an accurate occupational dose.

Please email the staff member’s name, job title, badge location number and date of birth to dosimetry@medray.ie .  Please note a “lost badge fee” will be incurred.

All dosimeters, including the control badge should be mailed as soon as possible after the last day of the scheduled monitoring period. 

Adherence to this schedule is critical for obtaining timely and accurate exposure reports.  Please note that we will not report doses on TLD dosimeters received more than 12 months from the monitoring period start date.

Dosimeters not returned within 90 days of the end date of the reporting period will incur a late return fee.  This fee is incurred by Medray and therefore cannot be refunded.

Your employer can supply you with a copy of your dose report.  If they do not have a copy, please email your name, job title, date of birth and badge location number to dosimetry@medray.ie

An asterisk (*) is placed when the calculated dose is less than the “minimum reportable dose” which signifies that the calculated dose has no statistical relevance (for example: less than 0.10 mSv for whole bodyfilm or TLD).  Mirion reports actual dose when the dose is greater than the minimum reportable dose.

A dose of 0.10 or 0.11 mSv is not considered significant.  However, if you have previously seen only asterisks, a dose of 0.10 or 0.11 mSv may be unsettling.  One of the reasons you may have received a higher dose is that the control badge might not have been shipped back with your personal badges.

A control badge measures any “background” exposure, which is separate from the exposure from the exposure a person receives from occupational work.  The control badge is read like any other badge and that amount of radiation found on your control badge (includes natural background and any transit dose) is subtracted from your badge reading.  So if your badge reads 0.19 mSv and the control badge is 0.08 mSv then your dose is 0.11 mSv.  Therefore, you should always send the control badge back so we can report an accurate occupational dose.

The last three columns of the report contain your lifetime-to-date effective dose.  The lifetime column reports the amount of dose or exposure you have received over your lifetime as a radiation worker. 

A radiation worker is defined as any person who works in a radiation or radiation-producing environment.

Pregnant women should be issued a whole body foetal dosimeter, which is typically worn over the foetal area.  If a lead apron is worn, the badge should be placed under the apron over the foetal area to measure any dose that the apron may have failed to shield. 

It is also recommended that a second dosimeter be worn at chest or collar level.