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More PVC Pipe Glue Discussion
I would like to comment on the ongoing pipe glue discussion from your November 2011 column. Users concerned about caustic service could look for what one manufacturer calls “industrial PVC cement” which is made without the fumed silica thickener. Fo...
Ask an Expert Published: 3/1/2012
Effects of Proposed Label Changes
Over the last year, we have received several correspondences regarding the Occupational Safety & Health Administration’s (OSHA) proposal to modify the existing HazCom standard to conform to the United Nations Globally Harmonized System (GHS) of clas...
Ask an Expert Published: 2/29/2012
Nitrites and Fragrances
We are using a vibratory finishing compound that has been satisfactory for more than 20 years. Recently, a potential new vendor pointed out that it contains sodium nitrite and said we are violating the law in using it. We checked with our supplier, ...
Ask an Expert Published: 1/26/2012
Pipe Glue, Revisited
I’ve contacted several plumbing suppliers and none of them were able to assist me in finding the glue you recommended for CPVC pipe or the pipe tape. We are seeing exactly what you were talking about on a leaky pipe containing caustic or alkaline s...
Ask an Expert Published: 1/24/2012
Where is the Pipe Glue?
I have contacted several plumbing suppliers around me, and none of them were able to assist me in finding the glue that you recommended for CPVC pipe or the pipe tape. We are seeing exactly what you were talking about on leaky pipe containing causti...
Ask an Expert Published: 10/25/2011
Nitric Acid Passivation and EH&S Impact
I am looking for safety/environmental requirements to set up a nitric acid cleaning and passivation system.
Ask an Expert Published: 8/15/2011
Effect of the Proposed Global Harmonization System
OSHA expects to adopt a revised Hazard Communication Standard that includes information included in the GHS in 2011. Once the rule is finalized, employers will have three years to implement the new standard. The most significant impacts upon employe...
Ask an Expert Published: 2/18/2011
Phosphates in Wastewater
I am charged with finding the sources of phosphorus in our plant. Our main process effluents are from mass finishing and washing machines. I have not found significant phosphorus in these fluids, and yet, we are close to the limit. What am I missing...
Ask an Expert Published: 1/11/2011
Decontamination of Metal Finishing Area
We have a finishing room at one of our plants, and we have outsourced the plating. We also did pickling and bright dip in the room, and we now want to decontaminate it so that we can sell the equipment, or at least dispose of it properly. Our main c...
Ask an Expert Published: 1/11/2011
Do We Have a Large Load?
We have a captive metal finishing operation and are looking at a process that will have a waste stream with 10,000 ppm Chemical Oxygen Demand at an average flow rate of 4 gal/min that will be discharging into our city’s wastewater treatment facility...
Ask an Expert Published: 1/11/2011

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