Open Source Training Modules
Overview of the Module
This module provides information about the following topics:
The New Jersey Department
of Environmental Protection (NJDEP) has established dose limits which
are based on recommendations from national and international commissions.
The table below lists the limits set by the NJDEP:
The University has established investigational levels at doses considerably less than the dose limits. When a worker accumulates during any part of a year a dose at or above the investigational level, EHS will investigate to determine causes of the dose and to recommend practices to minimize radiation exposure in the future.
Since the current model of radiation-induced cancer risk assumes that there is a risk no matter how low the radiation dose, it makes good sense to minimize radiation exposure. In fact, the University is required by NJDEP regulation to keep doses As Low As Reasonably Achievable (ALARA). This means that the University must work to keep doses as far below the dose limits as can reasonably be achieved.
To keep doses ALARA, the University has established investigational dose levels and will investigate any dose exceeding these levels in an effort to address causes of unnecessary radiation exposure.
In addition there are a variety of practical steps that you can take while working in the lab to minimize your radiation exposure. These steps will be described in detail in the Radioactive Materials Safety Class.
Internal Dose Information for Common Radioisotopes
This section provides a general overview of the Declared Pregnant Worker Program. More detailed information about the program is available in Section 6 of the Radiation Safety Manual for Laboratory Workers.
The NJDEP’s Fetal Dose Regulations apply only to a woman who has voluntarily informed her employer, in writing, of her pregnancy and the estimated date of conception. The dose to the fetus resulting from occupational exposure of a declared pregnant woman may not exceed 500 mrem for the entire pregnancy.
Submitting a Declaration of Pregnancy
For the type of radiation work performed at Princeton University, it is rarely necessary to recommend reassignment or changes to job duties.
If a written declaration of pregnancy is not submitted to EHS, then the worker’s dose continues to be controlled under the normal dose limits for radiation workers.
This is the end of the Dose Limit Module, which is the fifth of the six Radiation Basics modules.
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