The Sensitivity Of Gamma Portal Monitors To Personnel Intakes Of Radioactivity

Gamma radiation portal monitors are commonly used as an element of a radiation protection program at nuclear facilities. While they are are primarily used for personnel monitoring of external contamination, they also have the ability to detect internally deposited radioisotopes.

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AFFORDABLE DUST COLLECTION FOR HAND DEMOLITION TOOLS: A Look at What is Available for the D&D Professional

Original equipment manufacturers (OEMs) have been slow to embrace dust collection for the majority of these tools despite heavy pressure from Occupational Safety and Health Administration (OSHA) and Environmental Protection Agency (EPA) regulators. It is only with the recent addition of another layer of enforcement, the Renovation, Repair and Painting (RRP) rule, that the major tool manufacturers have begun to offer effective dust collection for their tools. These dust collectors vary in efficiency and ease of use, and add to the cost of the tool. Contractors must weigh the cost of the add-on against potential fines and the moral obligation to protect the worker’s health.

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USE OF HEPA FILTERED VENTILATION AS AN ENGINEERED CONTROL FOR D&D WORK

High Efficiency Particulate Air (HEPA) filters remove radioactive particles from the air and are used by the nuclear industry as an engineered control. The HEPA filters can be flexible and heat sealed into waste bags, 2 – 40 CFM filters used in respirators or glove bags, or larger filters mounted in ventilation systems. When mounted in a ventilation system, they capture airborne particles before they are spread or reach a worker’s breathing zone. Unfortunately, the use of HEPA filtered ventilation is not well understood. Most workers have had little or no training on how to use ventilation to capture airborne particles.

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INFRARED CAMERAS Provide Threefold Bonus For Nuclear Decommissioning

One of the most novel industries where infrared cameras have proved particularly valuable and cost effective is nuclear decommissioning. Engineers in Idaho are using them to provide process feedback and monitor safety as residual sodium is removed from the primary vessel and cooling loops of the sodium-cooled Experimental Breeder Reactor-II (EBR-II). Infrared cameras provide images of infrared radiation, or heat energy, which is otherwise invisible to the unaided eye. Infrared radiation is part of the electromagnetic spectrum, which includes visible light. But unlike visible light, infrared has wavelengths longer than the human eye can detect.

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DESTROYING ONE OF EUROPE’S MOST HAZARDOUS NUCLEAR LEGACIES

Fifty-seven tonnes of highly-contaminated liquid metal from fast reactor research tested the minds of engineers and scientists in the UK for two decades. Now, after an operation that took five years to complete, the team working for a consortium of Babcock International, CH2MHILL and URS has completed arguably the biggest hazard reduction in the UK decommissioning sector to date.

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SUMMER GEAR – Special Section

Every year, thousands of workers become sick from occupational heat exposure. Some cases even become fatal. These illnesses and deaths are preventable when workers are trained to follow heat-stress safety protocol, and when they are given the proper equipment to help them stay cool and safe while working outdoors or in hot indoor environments. In the field of nuclear decommissioning and remediation, workers are often covered from head to toe in protective gear aimed at shielding them from harmful and hazardous materials. It is important to integrate heat safety and cooling measures into this equipment in order to ensure overall safety in every capacity.

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2012 EPRI Groundwater Protection Workshop Wrap-Up

The EPRI Groundwater Protection Workshop (in association with the Nuclear Energy Institute RETS/REMP Workshop) was attended between June 26th and June 29th in Orlando, Florida, US by over 100 nuclear power industry professionals responsible for groundwater protection initiatives at nuclear power plants.

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Instrument Developed in Sweden and Canada to Facilitate the IAEA’s Work

The Digital Cherenkov Viewing Device has mainly been developed for the IAEA and will be used for checking nuclear fuel from the nuclear power plant at Fukushima Dai-ichi, Japan. The instrument is used to enable the IAEA’s inspectors to determine whether the quantity of irradiated nuclear fuel matches the quantity reported by the facilities.

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A Brief Overview of Decommissioning

Tools, Waste Management & Cooperation Around the Globe
Various tools and techniques are used along the way in the decommissioning process. They can be implemented above or under water depending on the environmental restrictions. It is important to conduct an assessment of the project in order to determine the most appropriate tools and techniques, and proper training should be attained. While each tool or technique provides its own advantages, the possible disadvantages must also be understood and taken into account in order to make an educated decision of the best option.

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Intro to Decommissioning Surveys and MARSSIM

MARSSIM is a consensus document prepared by DOD, DOE, EPA and NRC on the methodology for performing radiological surveys. It offers a flexible approach to planning, conducting and assessing radiological surveys to demonstrate compliance with release criteria. How often do you see multiple agencies working together on a common document? MARSSIM is indeed rare in that sense.

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