Radiation Surveys and Testing Nuclear / Ionizing including NORM, TENORM

Radiation Testing: Commercial Steel, Recycled Materials, Imported Metals – Alloys & Potentially Radioactive Contaminated Materials

ScanTech Technical Consulting has had years of experience with radiation testing materials from small pieces of suspect product to large shipping containers and large property area assessments such as scrapyards and metal recycling centers.

Training has included recent Radiation Safety Officer (RSO) Training and X-Ray Safety Training including experience with medical and biomedical X-Ray equipment, radiation from instrumentation used in research (such as XRD and SEMs) to oil field equipment and scrap metal used by the petroleum industry.

We utilize several different Geiger counters and special scintillation detectors to cover a multitude of materials and scenarios where dangerous radiation may be involved.

NORM: Naturally Occurring Radioactive Materials

TENORM: Technologically Enhanced NORM



Ludlum Geiger Counter used to Measure Radiation

Ludlum Geiger Counter Radiation Meter


NIKON X-Ray Radiation Survey Form

NIKON X-Ray Radiation Survey Form

NIKON Radiation Survey Form SAMPLE ScanTech


MEDICAL RADIATION CONCERNS – ScanTech Performs Radiation Consulting With Hospitals, Medical Facilities & Doctors

How Many X-rays Are Safe In A Year?



We can scan vehicles, scrap metal or whatever concern you have for potentially dangerous radioactive materials.



Office of Waste – TCEQ Radioactive Materials

Naturally Occurring Radioactive Materials (NORM) TX Radiation Regulations 259fn99

Radiation Safety Manual

Texas Department of State Health Services on Radon Gas   (for other links about Radon Gas FAQ, check the Navigation bar to the left)



Q. Are granite or other natural stone counter-tops / tile / flooring a health hazard?

A. Possibly. (see below for more detail)

Most granite, marble and many other types of stone do contain noticeably higher levels of radiation. How much more depends on exactly how the stone was formed, where it was quarried from and the types of mineral inclusions that are present.

What constitutes a health hazard is a material with enough additional radioactivity beyond normal to elevate medical risk. To some extent this is subject to conjecture, and while ScanTech does not advocate fear-mongering, we also believe that a consumer has a right to an informed choice as to what they and their families are exposed to.


Q. What is background radiation?

A. Ionizing background radiation is everywhere – in the earth, from the sun, exposure to medical X-Rays, high altitude commercial flights will increase your dosage of cosmic rays, etc. Unless you want to live in a lead lined vault, you cannot reasonably get away from all forms of radiation.


Q. What levels are typical?

A. Normal background radiation levels vary from 0.03 – 0.31 microSieverts per hour. (a tissue radiation dosage measurement) Typical gamma measurements are from 6 – 12 micro Roentgens / hr.


Q. What levels are dangerous?

A. From the limited research I have done, 50 milliSieverts per year is conservatively the lowest dose at which there is any discernible, elevated risk of cancer in adults. In my own NON-MEDICAL OPINION, I would consider 16 X normal background levels as being the threshold of concern.

This would translate to approximately 1.92 microSieverts per hour. In general, any radiation not used for specific and medical purposes in a controlled fashion isn’t healthy, but there is the concept of comparative risk.


Q. How long and how much experience do have in measuring granite samples?

A. Over a decade of experience testing slabs, installed natural stone tops and warehouses including the correlation between mildly radioactive stone and radon gas emissions.


Q. What levels are you finding in granite and other natural stone samples?

A. So far I have gotten up to 0.80 microSievert per hour which is more than 3 X background. But according to others who have done more extensive studies, they are finding up to 3 % of the stone they have tested are 100 X normal. (which is well above the threshold of concern that I noted above)


Q. Do you consider this a reason for concern – enough to pay for a survey?

A. While the odds are against you buying a large quantity of a dangerous rock, I have found that my clientele are more than happy to pay the relatively small fee of testing in exchange for peace of mind.