| (I) accept, as a record of the occupational dose that
the individual received during the current year RC Form 233-1 (Occupational
Exposure Record for a Monitoring Period) from prior or other current
employers, or other clear and legible record, of all information required
on that form and indicating any periods of time for which data are
not available;
(II) accept, as a record of the occupational dose that
the individual received during the current year, a written signed
statement from the individual, or from the individual's prior or other
current employers for work involving radiation exposure, that discloses
the nature and the amount of any occupational dose that the individual
received during the current year; or
(III) obtain reports of the individual's dose equivalent
from prior or other current employers for work involving radiation
exposure, or the individual's current employer, if the individual
is not employed by the registrant, by telephone, telegram, fax, letter,
or email. The registrant shall request a written verification of the
dose data if the authenticity of the transmitted report cannot be
established.
(iii) The registrant shall record the exposure data
for the current year, as required by clause (i) of this subparagraph,
on RC Form 233-1, or other clear and legible record, of all the information
required on RC Form 233-1.
(iv) If the registrant is unable to obtain a complete
record of an individual's current occupational dose while employed
by any other registrant or licensee, the registrant shall assume in
establishing administrative controls in accordance with subsection
(j)(3)(A)(iv) of this section for the current year, that the allowable
dose limit for the individual is reduced by 1.25 rems (12.5 mSv) for
each quarter; or 416 millirems (mrem) (4.16 mSv) for each month for
which records were unavailable and the individual was engaged in activities
that could have resulted in occupational radiation exposure.
(v) If an individual has incomplete (for example, a
lost or damaged personnel monitoring device) current occupational
dose data for the current year and that individual is employed solely
by the registrant during the current year, the registrant shall:
(I) assume that the allowable dose limit for the individual
is reduced by 1.25 rems (12.5 mSv) for each quarter;
(II) assume that the allowable dose limit for the individual
is reduced by 416 mrem (4.16 mSv) for each month; or
(III) assess an occupational dose for the individual
during the period of missing data using surveys, radiation measurements,
or other comparable data for the purpose of demonstrating compliance
with the occupational dose limits.
(vi) Administrative controls established in accordance
with clause (iv) of this subparagraph shall be documented and maintained
for inspection by the agency. Occupational dose assessments made in
accordance with clause (v) of this subparagraph and records of data
used to make the assessment shall be made and maintained for inspection
by the agency. The registrant shall retain the records in accordance
with subsection (k)(2) of this section.
(G) Instructions to workers.
(i) All individuals likely to receive in a year an
occupational dose in excess of 100 millirem (1 mSv) shall be:
(I) kept informed of the storage, transfer, or use
of sources of radiation in the licensee's or registrant's workplace;
(II) instructed in the health protection problems associated
with exposure to sources of radiation, in precautions or procedures
to minimize exposure, and in the purposes and functions of protective
devices employed;
(III) instructed in, and instructed to observe, to
the extent within the worker's control, the applicable provisions
of agency requirements and certificates of registration, for the protection
of personnel from exposures to sources of radiation occurring in such
areas;
(IV) instructed of their responsibility to report promptly
to the registrant any condition that may constitute, lead to, or cause
a violation of agency requirements or certificate of registration
conditions, or unnecessary exposure to sources of radiation;
(V) instructed in the appropriate response to warnings
made in the event of any unusual occurrence or malfunction that may
involve exposure to sources of radiation; and
(VI) advised as to the radiation exposure reports that
workers may request in accordance with subsection (k)(3)(D)(i) and
(ii) of this section.
(ii) The extent of these instructions shall be commensurate
with potential radiological health protection problems associated
with the sources of radiation in the workplace.
(H) Protective devices. Protective devices shall be
utilized when required, as in subparagraphs (J)(i) and (ii) and (K)
of this paragraph and paragraph (6)(C) of this subsection.
(i) Protective devices shall be of no less than 0.25
millimeter (mm) lead equivalent material except as specified in paragraph
(6)(C)(ii)(I) of this subsection.
(ii) Protective devices, including aprons, gloves,
and shields shall be checked annually for defects, such as holes,
cracks, and tears. These checks may be performed by the registrant
by visual or tactile means, or x-ray imaging. If a defect is found,
protective devices shall be replaced or removed from service until
repaired. A record of this test shall be made and maintained by the
registrant in accordance with subsection (k)(2) of this section for
inspection by the agency.
(I) Exposure of individuals. No individual other than
the animal, operator, and ancillary personnel shall be in the x-ray
room or area while exposures are being made unless such individual's
assistance is required.
(J) Holding of animal or image receptor.
(i) When an animal or image receptor must be held in
position during an exposure, mechanical supporting or restraining
devices shall be used when the exam permits.
(ii) If an animal or image receptor must be held by
an individual during an exposure, that individual shall be protected
with appropriate shielding devices described in subparagraph (H) of
this paragraph.
(iii) The registrant's written operating and safety
procedures required by paragraph (2) of this subsection shall include
the following:
(I) a list of circumstances in which mechanical holding
devices cannot be routinely utilized; and
(II) a procedure used for selecting an individual to
hold or support the animal or image receptor.
(K) Operator position. The operator position during
the exposure shall be such that the operator's exposure is ALARA and
the operator is a minimum of six feet from the radiation machine or
protected by an apron, gloves, or other shielding having a minimum
of 0.25 mm lead equivalent material.
(L) Holding of tube. In no case shall an individual
hold the tube or tube housing assembly support during any radiographic
exposure. Hand-held radiation machines shall be held only in the manner
specified by the manufacturer.
(4) Facility requirements.
(A) Caution signs. Unless otherwise authorized by the
agency, the standard radiation symbol prescribed shall use the colors
magenta, purple, or black on yellow background. The standard radiation
symbol prescribed is the three-bladed design as follows:
Attached Graphic
(i) the cross-hatched area of the symbol is to be
magenta, purple, or black; and
(ii) the background of the symbol is to be yellow.
(B) Posting of notices to workers.
(i) Each registrant shall post current copies of the
following documents:
(I) this section, §289.233;
(II) the certificate of registration and conditions
or documents incorporated into the certificate of registration by
reference and amendments thereto;
(III) the operating procedures applicable to work under
the certificate of registration; and
(IV) any notice of violation, if applicable, involving
radiological working conditions, or order issued in accordance with
subsection (a) of this section and §289.205 of this title, and
documentation of the corrections of any violations.
(ii) RC Form 233-2 Notice to Employees, or an equivalent
document containing at least the same wording as RC Form 233-2.
(iii) If posting of a document specified in clause
(i) of this subparagraph is not practicable, the registrant shall
post a notice that describes the document and states where it may
be examined.
(iv) Documents, notices, or forms posted in accordance
with this section shall:
(I) appear in a sufficient number of places to permit
individuals engaged in work under the certificate of registration
to observe them on the way to or from any particular work location
to which the document applies;
(II) be conspicuous; and
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