NH3 gas is COLORLESS! Check out the SDS or any data source if you think I’m kidding. What we are seeing in that “white smoke” or “cloud” is moisture in the air (i.e., humidity) condensing on the very cold NH3 gas. So the question I often get is: How much NH3 gas is needed to…...
Recent reports published by the National Academies Press provide conclusions and recommendations for improving acute exposure guideline level (AEGL) documents for several chemicals and chemical classes. AEGLs were developed by the National Advisory Council to provide values with which to assess acute adverse health effects for extremely hazardous substances (EHSs)…. Membership Required You must be...
I wish all the states made compliance this simple! Well done MI…. Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
Approximately 90 percent of hazardous materials (hazmat) injuries are due to inhalation. In general, although some solids are highly hazardous (upon physical contact with the skin or if ingested into the body), gases and liquids with high vapor pressures pose the most significant risks to responders. These chemicals are more hazardous because they can become…...
On July 13, 2012, EPA modified the EPCRA Section 312 Emergency and Hazardous Chemical Inventory Forms (Tier I and Tier II) to add new mandatory and optional data elements under the facility identification and contact information sections of both forms. EPA also revised some existing data elements on the chemical reporting section of the forms…...
Cylinder Colors While the cylinder label is the primary means of identifying the properties of the gas in a cylinder, the colour coding of the cylinder itself, can often time provide a further guide. Cylinder Shoulder – European Standard Color CodingThe color applied to the shoulder, or curved part, at the top of the cylinder,…...
For nearly 16 years I have seen clips of a “dashcam” video that claims an NH3 transportation accident (w/ nurse tank) claimed the life of an IL State Trooper. The video is on dozens of websites and we even see it used in training courses and almost always the video is depicted as being real…...
FRA is issuing Safety Advisory 2012–01 to remind shippers and consignees of railroad tank cars containing odorized liquefied petroleum gas (LPG), of the importance of taking actions to ensure that a sufficient level of odorant remains in the LPG throughout the entire transportation cycle. FRA is issuing this notice to raise awareness within the hazardous materials community,…...
The NIOSH Respirator Selection Logic (RSL) relies entirely on whether the airborne concentration of a contaminant exceeds a defined exposure limit (such as the NIOSH Recommended Exposure Limit [REL] or OSHA Permissible Exposure Limit [PEL]), regardless of what the chemical’s vapor pressure is. However, vapor pressure plays a decisive role in selecting a respirator, particularly…...
I am sure many of you have heard the old saying… “it’s just common sense” when it comes to applying PTFE (Polytetrafluoroethylene) tape, often called “thread sealants” or “plumber’s tape”. Yet this practice is a critical skill for ensuring leak-free connections in threaded piping systems. While it seems straightforward, the direction and tension of the…...
On the ASME Form U-1 (Manufacturer’s Data Report for Pressure Vessels), the information regarding Postweld Heat Treatment (PWHT) is typically found in Line 14…. Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
An ASME B31.3 welding quality assurance (QA) program must cover the full lifecycle of a weldment, from procedure qualification to final testing, to ensure structural integrity. It serves as a mandatory framework for contractors to demonstrate that their processes and personnel consistently meet the minimum safety requirements for process piping. The QA program must include the following:…...
