- 70 -
Control Cable Sheath
Rigid or flexible tube for guiding the control cable from the remote to the radiographic exposure device and providing
physical protection to the control cable. The control cable sheath includes the necessary connections for attachment to the
radiographic exposure device and to the remote control. Also known as: control cable housing, conduit.
Exposure Device (container)
Radiographic exposure devices are used to remotely project the radiation source to a predetermined exposure position when
required and to securely maintain it and shield it when it is not in use. Current equipment requirements require devices be
designed and tested to ISO/ANSI standards and pertinent transportation regulations for transport containers. Also known as:
projector, gamma ray projector (G.R.P.), camera, pill-box, source-box, exposure container.
Exposure Head
Device which locates the sealed source included in the source assembly, in the selected working position and prevents the
source assembly from projecting out of the projection sheath. Also known as: source stop, end stop, snout and head-hose.
Locked Position
Describes the condition when the lock on a radiographic exposure device or transport container is fully engaged to lock the
source assembly in place and the key is removed from the lock. This condition prevents unauthorized personnel access to the
sealed source assembly locked within the device.
Maximum Rating
The maximum activity expressed in Becquerels and Curies that cannot be exceeded, of a sealed source specified by
radionuclide by the manufacturer when contained within a radiographic exposure device or a transport container. Also
referred to as maximum capacity.
Plunger Lock
A mechanical device with a key used to lock or unlock the radiographic exposure device or transport container.
Projection Sheath
A flexible or rigid tube for guiding the source assembly from the radiographic exposure device to the working position,
having the necessary connections for attachment to the radiographic exposure device and the exposure head or including the
exposure head itself. The projection sheaths also provide protection of the source assembly and attached control cable from
water, dirt, sand and other foreign materials usually present at radiography environments. Also known as: source guide tubes,
guide tubes, source tubes, head-hoses. Examples of rigid projection sheaths include j-tubes, probes, jet engine probes.
Pneumatic Actuator
See definition for “actuator”.
Qualified Radiographer
A person who is certified in industrial radiography radiation safety by a certifying organization/ entity who personally
supervises all radiographic operations in accordance to the regulatory requirements of the jurisdiction where the work will be
performed and for the radioactive materials that will be placed in the transportation system. Radiation safety certification of
radiographers is required in the USA and Canada. Assistant radiographers must work under the direct supervision of a
certified radiographer or registered radiographer trainer. (Also know as: ASNT-IRRSP certification, State of TX., LA. IA. IL.
GA. ME. I.D. cardholder in USA. Qualified radiographers in Canada are known as a C.E.D.O., Certified Exposure Device
Operator). Radiation safety certifications in North America are separate from the technical certifications for radiography.
Remote Control
The mechanical device that enables the source assembly to and from a working position by operation from a distance away
from the radiographic exposure device. The remote control includes the control crank mechanism (normally a hand-crank),
and where applicable, also the control cable, the control cable sheath and the necessary connections and attachments. See
additional description under ‘control crank’ and “air pump remote control”.
Reserve Sheath
Remote control sheath (conduit) containing the length of control cable, necessary for the projection of the source assembly.
To Next Page
Loading...