Radiation-protection doors
Radiation-shielding doors: keeping people from harm
X-rays, gamma rays, electron beams and other types of radiation play a pivotal role in medical diagnosis. However, steps must be taken to make sure radiation is helpful and not harmful – and does not endanger patients or medical staff. Consequently, doors to x-ray rooms in doctors’ practices and hospitals, and to other radiation-producing facilities, must be equipped with special radiation-protection doors.
At neuform, we have applied our expertise to develop effective, high-quality radiation doors that reliably safeguard people and living organisms from unintentional exposure. They are equipped with highly precise lead linings in the door leaf and the frame to shield against radiation, and are reinforced with extra-robust hinges.
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Applications- Main tasks:
Protection from x-rays in medical diagnostics and treatment
Protection from gamma rays in nuclear medicine
DIN 6834 - Radiation protection doors in medical use
Degree of attenuation = Lead equivalence value (LEV)
LEV < 2 mm: Standard locks can be used
LEV >=2 mm: Radiation protection lock required (with offset follower and keyhole)
Radiation protection plan - specifies required degree of attenuation
Installation in steel frame - radiation-protection mortar or partial/complete lining (in accordance with radiation protection plan)
LEAD EQUIVALENCE VALUE (LEV) - TABLE
Lead equivalence value T0
| LEV | HT40 | HT50 | HT65, HT70 |
|---|---|---|---|
| LEV 1 | X | X | X |
| LEV 2 | X | X | X |
| LEV 3 | X | ||
| LEV 4 | Upon request | Upon request |
Lead equivalence value T30, RS + T90
| BGW | HT70-T30, RS | HT70-T90 |
|---|---|---|
| BGW 1 | X | X |
| BGW 2 | X | X |
| BGW 3 | X (up to sound-insulation class II) | X |
| BGW 4 | Upon request | Upon request |
LASER SAFETY
Doors for diverse laser safety classes
Excellent safety is critical – especially where lasers are in use. neuform offers you peace of mind: our doors are designed in line with various laser classes, so they can offer the right protection for anyone who comes into contact with these technologies.
Our offering ranges from doors equipped for relatively low protection levels, e.g. for laboratories and similar areas, to multi-functional laser safety windows, to solutions for high protection levels, e.g. shielding against powerful industrial lasers. Potential accidents are avoided, and employees are kept safe and sound.
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DIN EN 60825-1 – safety of laser products
Evaluation of laser classes; varies according to the potential hazard of the laser, i.e. its optical power, energy. A rule of thumb: the higher the class, the greater the potential danger.
A threshold or floor seal is required to prevent the laser beam reflecting off the floor beneath the door.
For examples of laser classes, please see the following table
| Laser category | examples |
|---|---|
| 1 | Players such as CD players, games consoles |
| 1M | As for 1, non-hazardous provided no optical instruments such as magnifying glasses or binoculars are used |
| 2 | Line and rotary lasers, laser distance meters, short exposure (up to 0.25 sec.) non-hazardous |
| 2M | As for 2, non-hazardous provided no optical instruments such as magnifying glasses or binoculars are used |
| 3R | A danger to eyes. Devices require special safety measures, laser safety officer, mandatory notification |
| 3B | A danger to eyes and skin. Devices require special safety measures, laser safety officer, mandatory notification |
| 4 | A danger to eyes and skin. Devices require special safety measures, risk of fire and explosion, laser safety officer, mandatory notification |
Source: based on BG ETEM (employers’ liability organisation) Lasersicherheit (laser safety), Dipl.-Ing. Falk Florschütz
LASER SAFETY
LASER SAFETY
Applications of laser safety glass:
multi-functional usage for hospitals and clinics, medical testing centres, testing facilities, laboratories, etc.
Available laser safety glass options:
special monolithic glass
double glazing combinations, as a glass insert with functional glazing for fire resistance, sound insulation, smoke control, radiation protection, privacy/screening, darkening, etc.
Roller shades or integral blinds between glass panes
The required laser safety glass type must always be determined via a workplace risk analysis. The risk analysis takes into account the laser manufacturer, laser type, focal length, radiation, etc. This information is used to determine the appropriate type of laser safety glass.