SPX X-ray
Industrial Imaging System
Page 29 of 44
SPX Series System Manual
118173-001 Rev. D
Chapter 5:
SPX Series Pre-operation
Before operating the unit, the X-ray Warm Up
procedures must be performed. The X-ray tube
provided with this system has been pre-aged
by the original manufacturer, and also tested
and aged by Spellman. It is necessary, however,
that the voltage be run up to the required kV
level at a fixed rate when the equipment has
not been used for a period of time.
Pre-Operational Safety
Precautions
While performing the warm-up sequence, or
during X-ray generation, the following safety
precautions must be strictly observed before
the x-ray tube is energized.
! WARNING!
To avoid radiation hazards under
unshielded, outdoor operating
conditions, the Control Unit must
be placed a considerable distance
from the Tubehead. A sufficient
length of cable is provided, and
must be used to help protect the
operator and others in the
immediate vicinity. Refer to NCRP
(National Council on Radiation
Protection) recommended
practices.
! WARNING!
The operator of this apparatus must
ensure all personnel are clear of the
hazardous X-ray area before
generating X-rays. Flashing
beacons and/or audible alarms
should be utilized during exposures,
warning personnel of the radiation
hazards. Personal radiation
monitoring devices shall be worn by
all personnel in the immediate
vicinity. Radiation warning signs
shall be posted where necessary.
! WARNING!
All cables MUST be connected to
their appropriate connectors on
the Control Unit, Cooling Unit, and
Tube Head before applying power
to the System
! WARNING!
The operator of this X-ray unit, or
any person in the immediate
vicinity, may be subject to receiving
some exposure to X-radiation
during the time that the X-ray unit
is generating X-rays. Since X-rays
can cause harmful effects to the
human body, unnecessary
exposure should be avoided, and all
exposure held to an absolute
minimum compatible with practical
requirements and current safety
regulations. An X-ray survey meter,
placed in the vicinity of the Control
Unit and operator, is recommended.
X-Ray Tube Warm Up
Seasoning “Auto-Warming” is important to
preserve the x-ray tube. It is required whenever
the tube is operated above 80 kV and four hours
have elapsed since the x-ray tube was operated
at the level required for the next exposure, or
when operating a new tube having less than ten
hours of operation. Tubes having been previously
operated, but not run over 80 kV for 30 days or
longer, must be treated as new tubes.
The following section outlines the steps to
properly complete the x-ray tube warm-up
sequence. Tables 1, 2 and 3 relate the tube’s
inactive time to the required warm-up rate and
must be used while performing the warm-up
sequence.
For detailed instructions for
seasoning (auto-warming), refer to section
4.6.1 in the SPX User Guide.
Summary of Contents for SPX Series
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