Regulation,
2
PART IV.
CONTROL OF EXPOSURE TO RADIATION.
14.
Permissible dose
41
+
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13.
Register of employees
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16.
Recording of personal exposure to radiation
LEA
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PART V.
MATERIAL PROTECTION AND SAFE PRACTICE.
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Page.
9
ID
RADIATION ORDINANCE 1957.
(No. 35 of 1957).
RADIATION (CONTROL OF IRRADIATING APPARATUS)
REGULATIONS 1965.
In exercise of the powers conferred by section 14 of the Radiation Ordinance 1957, the Radiation Board has, subject to the approval of the Legislative Council, made the following regulations--
17.
Material protection in case of static irradiating apparatus
11
18.
Filtration of useful beam from X-ray machine used for fluoroscopy
19,
Marking of protective housing of X-ray tubes
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www.
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20.
Restriction on radiation from television sets
= 222
12
12
rat
12
21.
Determination of dose rate and quality of radiation
PART I.
CITATION AND INTERPRETATION.
1. These regulations may be cited as the Radiation (Control of Citation Irradiating Apparatus) Regulations 1965, and shall come into operation and com on the day appointed for the commencement of the Radiation (Amend ment) Ordinance 1961.
fencenderil.
(6 of 1961).
J
JAN
13
21
23.
Testing of timers for use in connexion with irradiating apparalus Supervision of persons undergoing treatment
13
13
In these regulations, unless the context otherwise requires Interpreta- "approved laboratory" means a laboratory approved by the Board for
the purposes of regulation 16;
tion.
24.
Recording and checking of filters
rrr
110
1 ซ
13
25.
Prohibition of operation of X-ray machines in presence of ignitable
gas or vapour
14
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PART VI.
OPERATION OF GRADIATING APPARATUS.
Restriction on use of irradiating apparatus
26.
27.
Declaration of irradiating apparatus
28.
29.
Records of the use of certain rays
Warning notices
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Ний
PART VII
TRANSITIONAL PROVISIONS.
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14
and
15
15
G
15
17
"dental practitioner" means a person for the time being registered or
deemed to be registered under the Dentists Registration Ordinance (29 of 1999). 1959:
"dental X-ray machine" means a type of irradiating apparatus specifically designed for the taking of radiographs of the teeth or jaws;
"dose" is the quantity of absorbed energy from radiation;
"dosemeter" means an instrument for measuring exposure to radiation: "dose rate" is the dose per unit of time, usually expressed as "rads per minute" and abbreviated "rads/min." or as "rems per minute" and abbreviated "rems/min.";
"employ" and "employment" include reference to any kind of work carried out in furtherance of apprenticeship or any agreement for training;
"equivalent thickness of lead" means such thickness of lead as is equally
opaque to a specific quality of radiation;
"exposure rate" means the exposure per unit of time, usually expressed
as "roentgens per minute" and abbreviated "r/min.";
"filter" means any substance interposed in a beam of radiation for the purpose of changing its quality or intensity, or both; and "filtration" has a meaning corresponding therewith;
30.
Transitional provisions 144
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First
Schedule. Form 1-Application for Irradiating Apparatus Licence
Form 2-Irradiating Apparatus Licence
16
+
Second Schedule. Fees
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