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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...
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...
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, ...
When our mass finishing equipment is started after being shut down a week or more, an extreme stench emanates from the entire system. How can we control this problem?
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...
Spent Hydrochloric Acid
We make HCL drops out of our line and need to pump the spent acid to a holding tank. What is the best type of pump for this?
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...
Metals Recovery from Wastewater Treatment Sludge
The sludge is green in color so we think it contains significant amount of nickel. Could we plate out the nickel?
Caustic Piping Remedies
When I reviewed our operations, I was struck by how many of our PVC and CPVC piping joints that carried either caustic for wastewater pretreatment or alkaline cleaner exhibited a crusty scale, apparently dried caustic residue.
OSHA Regulations Regarding Safety Showers and Eyewash Stations
It has been brought to my attention that our two safety showers and eyewash stations are in need of repair and/or replacement. It is my desire to provide the appropriate equipment, but I could use some help on determining what is required by OSHA. K...