Western Australian Consolidated Regulations Western Australian Consolidated Regulations In this Part, unless
the contrary intention appears —
absorbed dose means a dose calculated by reference
to the energy absorbed per unit mass by matter from ionising radiation which
impinges upon it;
approved means approved by the State mining
engineer;
authorised limit , in relation to a mine, means
the authorised limit determined for that mine under regulation 16.4;
best practicable technology means that technology,
from time to time relevant to a specific project, which enables radioactive
waste or exposure to radiation to be managed so as to minimize radiological
risks and detriment to people and the environment, having regard
to —
(a) the
achievable levels of effluent control and the extent to which pollution and
degradation of the environment is minimized or prevented in comparable mining
operations elsewhere;
(b) the
cost of the application or adoption of that technology relative to the degree
of radiological and environmental protection expected to be achieved by its
application or adoption;
(c)
evidence of detriment or lack of detriment to the environment after the
commencement of mining operations;
(d) the
location of the mine;
(e) the
age of the equipment and facilities in use for mining purposes and their
relative effectiveness in achieving radiological and environmental protection;
and
(f) the
potential long term hazards from the wastes;
collective effective dose means the total
radiation exposure of a group of people calculated by reference to the sum of
their individual effective doses;
committed effective dose means the effective dose
that a person will receive from an intake of radioactive material, calculated
with reference to the persons age, type and time of radiation intake and
statistically determined capacity for types of organs or tissue to absorb
radiation over time;
contamination level means an amount of
radioactivity in either air, water or on a surface, the presence of which is
undesirable to the extent that it could be harmful if uncontrolled or not
guarded against;
controlled area means an area to which access by
employees should, for the purpose of minimizing radiation exposure, be limited
or minimized;
designated employee means an employee who works,
or may work, under conditions such that the employee’s annual effective
dose equivalent might exceed 5 millisieverts (0.005 Sv);
dose means either absorbed dose or effective dose,
depending on the context;
dose constraint means a level of a dose, in
relation to an employee, as determined by the State mining engineer under
regulation 16.5, used to prompt investigation and (if appropriate) action
if achieved or exceeded;
dose limit means a dose limit referred to in
regulation 16.18 or 16.19;
effective dose means a dose that has been
calculated by reference to both the type of radiation involved, and the
radiological sensitivities of the organs and tissues involved;
equivalent dose means a dose to organs or tissues
that has been calculated by reference to the type of radiation involved;
exposure means exposure to radiation;
ionising radiation material means a radioactive
substance consisting of or containing, as the case may be, an amount of
radioactivity that requires regulation under the Radiation Safety (General)
Regulations 1983 ;
irradiating apparatus means any apparatus capable
of producing ionising radiation;
member of the public means any person other than
an employee;
non‑designated employee means an employee
who is not a designated employee;
radiation management plan , in relation to a mine,
means the plan approved for that mine under regulation 16.7;
radiation safety officer means a radiation safety
officer appointed under regulation 16.9;
radioactive waste means radioactive solid, liquid
or gaseous residues arising from a mining operation;
restricted release zone means a zone from which
the release of radiation should be restricted to authorised limits;
sealed ionising radiation source means ionising
radiation material sealed in a container, or having a bonded cover, strong
enough to prevent contact with and dispersal of the radioactive material under
the conditions of use and wear for which the cover or container was designed;
supervised area means an area access to which by
members of the public should be restricted, for the purpose of minimizing
radiation exposure to members of the public;
waste management system means the system for the
handling, treatment, storage and disposal of radioactive waste.
[Heading inserted in Gazette 13 Nov 1998
p. 6218.]