Radiation FAQs

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Radiation Safety FAQs


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Do I need to placard my vehicle to transport my gauge?
No. Placarding is required for vehicles that transport Yellow III quantities of radioactive material. Troxler gauges contain only White I or Yellow II quantities of radioactive material.

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Do I need a CDL (Commercial Driver's License) to transport Troxler gauges?
No. A CDL would only be required for greater than Yellow II quantities of radioactive material.

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How often do I have to leak test my gauge?
Frequency of leak testing is specified in the conditions of your radioactive materials license. Most users are required to leak test their gauges every six months.

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What is the transport index?
The transport index is the radiation dose rate expressed in millirem per hour at 1 meter from the surface of the package.

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Can I transfer my gauge to another company?
US regulations state that prior to shipment to another user, you must verify that they are licensed to receive the type, form and quantity of radioactive material that you plan to transfer. This may be verified by obtaining and reviewing a copy of their radioactive materials license. Alternatively, you may obtain a letter from them stating that they are properly licensed to receive the type, form and quantity of radioactive material contained in the gauge you wish to transfer. Such a letter should include the name of the issuing agency, the license number and the expiration date of the license.

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Where do I get Special Form Certs (i.e. GB/140/S85, etc.)?
Please reference the Special Form Certificates page of our web site.

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Do I need a MSDS for my nuclear gauges?
No. Troxler provides a MSDS disclaimer statement for your files.

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What is reciprocity and how can I use my gauge in another state?
The regulatory authority for portable nuclear gauges in many states is the US Nuclear Regulatory Agency. Other states which have entered into an agreement with the USNRC (and therefore are referred to as 'agreement states') have agencies which have regulatory authority for portable nuclear gauges in their state. So, how do you work in a state which is regulated by an agency other than your own?

Most states have a system of "reciprocity" for portable nuclear gauge licenses. This means that if you send them a request and any applicable fees, they will issue you a "letter of reciprocity" authorizing you to use your gauge in their state for some period (usually less than 180 days per year) as long as you adhere to their rules and regulations. How does this all work?

The requirements for reciprocity vary from agency to agency, so the first step is a call to the state regulatory agency where you wish to do work. They will direct you as to what they require for you to work in the state. A list of regulatory agencies and contact telephone numbers are available in Troxler's Transportation Guide.

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Please reference Troxler's Transportation Guide for the answers to the following questions:

  • How do I apply for a Radioactive Materials license?
  • How do I fill out a Radioactive Materials license application?
  • How do I calculate Dose to Members of the public?
  • What is the element name and mass number for the sources?
  • What is the chemical and physical form of the sources?
  • What are the activities of the radioactive sources?
  • What are the model numbers for the sources?
  • What should my radiation protection program look like?
  • Do I need to have a survey meter (radiation detection instrument)?
  • How do I fill out shipping papers for my gauge?
  • Where do I find Type A package testing results for my case?
  • Where do I get an emergency response sheet?
  • What emergency contact telephone number should I have?
  • How do I transport my gauge in my vehicle?
  • How do I label my shipping case?

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About Our Company

Since 1958, Troxler has been the worldwide leader in precision quality control and measurement equipment for the highway and construction industries. We are dedicated to providing full service, training, and maintenance support for all our products through our international sales and support offices in the US, Canada, Germany and through our 50 distributors around the world.

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Troxler Electronic Laboratories, Inc.
3008 E. Cornwallis Rd. • PO Box 12057
Research Triangle Park, NC 27709

Phone: 1.877.TROXLER (1.877.876.9537)
Outside the USA – +1.919.549.8661
Fax: +1.919.549.0761