The values given in Columns I and II apply to continuous exposures for 24 hr

a day. Where exposure is incurred only during a work day of 8 hr, the values in Columns I and II may be multiplied by a factor of 3.

b dr stands for daughter products.

с

The limit given in NBS Handbook 52 18 10-8mc/m. The new value 10 -7 'mc/ml was

adopted by the International Commission on Radiological Protection, 1953, and is now acceptable in the United States.

INSTRUCTIONS FOR REGISTRATION OF SOURCES OF NUCLEAR OR X-RADIATION

The owner of every installation shall register the same or cause it to be registered with the Texas State Department of Health within 30 days of receipt of this form.

Changes in installatione The owner of every registered installation or mobile source shall advise the State Department of Health of all changes which may substantially increase potential hazard to any employee.

The following definitions are offered for accomplishing this registration:

1.

The owner of an installation shall mean the person or organization having by law the administrative control of a source of radiation located within the confines of installation, whether as owner, lessee, or otherwise.

2. Agent The person responsible for immediate supervision of the use or application of radiation sources.

3.

4.

Installation A location where for a period of more than 30 days one or more sources of radiation are used, operated or stored. The confines of an installation shall be as designated by the owner. A part of a building, an entire building or plant may be designated as an installation. Where mobile radiographic laboratories or similar considerations are involved, a typical unit and use area should be described, with location of central field headquarters and enumeration of units.

Radiation equipment (If possible, please provide manufacturer, model, serial number, etc) Specifically, the following information should be included, together with the number of fixed installations or mobile sources.

Industrial X-raya: give the KVP and maximum tube current if available, and purpose of use (radiography of castings, fluoroescence analysis, diffraction for crystallography, fluoroscopy of materials, etc.)

Medical or Dental X-raya: give KVP and maximum tube current if available and purpose of use (diagnostic, therapeutic, etc.)

Other: specify any other device, as below, or of type and nature of use not covered in described categories (e.g., fluoroscope, electron microscope, etc.) Radioactive Static Fliminators: give type and length of active face, e.g., Alphatron, 24" long: Ionotron T-200, 24" long; also briefly give types of machines on which installed or other use.

Beta ray gauges: give amount and type of radioactive element if available, e.g., 10 millicuries of Strontium 90, and type of machine on which installed. or other use.

Nuclear reactors: give power in kilowatts, amount of source material therein, and briefly describe type (e.g., U-235 package power reactor, air-cooled U-238 homogeneoua fast breeder, pressurized water reactor, etc.)

Particle accelerators: give type, voltage and purpose or use (e.g., batatron, 30 million volts, X-ray generation; Van de Graaff electrostatic accelerator, 10 million volts, acceleration of protons.)

5. Radioactive materials - Identify, give strength, and nature of use and specify whether source is sealed or unsealed, Estimate quantity of material used annually and for short-lived isotopes, maximum amount on hand at any one time; e.g., 3 curies of cobalt 60, sealed, gammą radiography; 1 curie of radium as radium sulfate, unsealed, dial painting; 10 millicuries of carbon 14, tracer unsealed; 500 microcuries of iodine 131, tracer, unsealed; used annually 1

curie; average quantity on hand 10 millicuitate Department of Health

Division of Occupational Health

STATE OF TEXAS
STATE DEPARTMENT OF HEALTH

REGISTRATION OF SOURCES OF RADIATION

Registration in compliance with Regulations on Radiation Exposure, adopted by the State Beard of Health, effective September 1, 1956, under authority of Article 4418-d, Revised Civil Statutes, State of Texas. Registration does mat imply approval or disapproval.