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16.00 Posting and Labeling Requirements
16.01 Notices to
Workers
16.02
Radiation Warning Signs for Rooms and Areas
16.03
Radiation Warning Labels for Containers
16.04
Removal of Radiation Warning Signs and Labels
16.01
Notices to Workers
Certain documents must be conspicuously posted in each room,
laboratory, or area in which radiation sources are
present. These documents will include the State of New
York Notice to Employees (form GEN 301), Part 16 of the State
Sanitary Code.
16.02
Radiation Warning Signs for Rooms and Areas
A.
- Each entrance to laboratories or areas containing 10 times
the quantity listed in Table 3 of Appendix 16A (100 times this
quantity for natural uranium or thorium) of the State Sanitary
Code, Chapter 1, Part 16, must be posted with a "Caution Radioactive Materials" sign.
- Each entrance to a radiation area must be posted with a "Caution Radiation Area" sign. A radiation
area is defined as an area where the level of radiation in
such an area could cause a major portion of such
individual's body to receive a dose equivalent from external
exposure in any hour that exceeds two millirems.
- Each entrance to a high radiation area must be posted with
a "Caution High Radiation Sign" sign. A high
radiation area is defined as an area where the level of
radiation in such an area could cause a major portion of
such individual's body to receive a dose equivalent from
external exposure in any hour that exceeds 100
millirems.
- Each airborne radioactivity area must be posted with a "Caution Airborne Radioactivity Area" sign. An airborne
radioactivity area is defined as an area where the airborne
radioactive materials exceed the Derived Air concentrations
(DAC) Appendix 16C, Table 1, Column 3.
B. There are two exceptions to the room posting requirements:
- Rooms containing only sealed sources need not be posted if
the radiation level at 30 cm from the sources does not
exceed 5 mrem/hr.
- Rooms need not be posted if the radiation source is in use
for eight hours or less and if the source is constantly
attended by someone properly instructed in radiation safety
who will prevent exposure to individuals in excess of 500
mrem.
16.03
Radiation Warning Labels for Containers
Each container in which radioactive materials are used,
stored, or transported must be labeled with a "Caution,
Radioactive Materials" sign. In the case of storage,
the label must also identify the radionuclide, quantity, and
date of measurement. There are exceptions:
- Container with quantities no greater than those listed in
table 9 of Appendix 16A (10 times this quantity for natural
uranium or thorium).
- Containers with concentration no greater than those listed
in Table 2, Column 2, Appendix 16C
- Containers used transiently in laboratory work (e.g.
beakers, flasks, and test tubes for a period of a few hours
and in the presence of the authorized user.
- Containers in areas with restricted access, such as
storage vaults or hot cells, if a written record is readily
available to identify the radionuclide, quantity, and assay
date of each container.
Although the regulation provides exceptions, safety is often
served by labeling all containers holding radioactive
materials. Attention is drawn to the presence of the
materials and inadvertent contamination of coworkers and
experimental data is less likely.
16.04
Removal of Radiation Warning Signs and Labels
Radiation labels must be obliterated or removed from
containers and packages when they no longer contain radioactive
materials. Labels and markings should be promptly removed
from apparatus which has been checked for contamination and is
no longer to be used with radioactive materials. After a
final survey of rooms and areas formerly used for radiation
work, all signs and labels must be removed. |
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