Here are some newly machined explosion-proof hatches for pyrite ducts.
In preparing coal for energy production, pyrite, a sulfide that contributes to air pollution and acid rain, is removed before burning. The separated pyrite is forced through ducts to waiting hoppers using high pressure fans. These ducts have negative pressure in them. If a chunk of pyrite gets stuck in a hopper then unit has to be shut down and the duct removed from the unit to be cleaned.
With the addition of these hatches, if a chunk of pyrite gets stuck in the hopper, it is only a temporary shut down while the hatch is opened and the material is washed out. Once the hatch is sealed, the unit is quickly brought back on-line.
These hatches have also been used as inspection doors on gearboxes, giving quick access to the internals for routine maintenance or adjustments. The locking tab on the hatches also helps keep the unit secure.
No, not what is used when a race is too close to call (that’s a photo finish). But a machined finish added to the raised face on a flange to give an extra level of security to prevent leaks and maintain effective seals.
The Phonographic Finish is actually a serrated finish, either concentric or spiral (much like the grooves on a record), that will grip the gasket between pipe sections firmly.
These finishes are typically added on a lathe to specifications set either by the company ordering the flange, the manufacturer or ASME B16.5 guidelines. Below is a render of the completed flange with bolt holes. I would have included a photo of the actual completed unit, but as soon as it was finished, it was rushed to the job site! But that’s why we’re here. Everyone knows who to call when a custom part is needed in a hurry.
Do you use long term scaffolding in place of permanent platforms? Are they stable, secure and up to the new OSHA regulations? Are you still renting your scaffolding and paying for it month after month?
FALL PROTECTION & SCAFFOLDING VIOLATIONS
remain among OSHA’s most frequently cited standard violations.*
OSHA violations are now subject to higher penalties,
this signals a 78% increase in penalty amounts.*
Convert your temporary, unstable scaffolding to a sturdy, permanent structure. No more rentals, no more repairs, no more guard rails that are dangerously low and above all, avoid the fear of those outrageous OSHA fines.
A Riggs Machine representative will review your current needs and outline the best options for your facility. We even offer 3D renders of the unit before construction begins so you can visualize the actual unit design.
Walkways – Handrail – Ladders
Riggs can not only deliver new assemblies for your facility, but update your existing equipment to bring it up to the new standards.
Ever lose a bolt while working on your car, and then have a hard time finding it? Imagine that while working on industrial piping. Well it happens. When a new pipe goes up, many items can find their way trapped in the pipe, and when the unit is first started up, those items go racing to the end of the pipes. Many times leading into a unit or a pump.
A simple bolt in a new pump is a recipe for disaster. The pump is blown. It has to be removed and repaired. They are often in hard to access locations, covered with guards and shrouds. Crews come in! Permits! Downtime! Behind schedule!
But this simple item could have prevented that. The Witch Hat Strainer (also called a Start-Up Strainer), is placed in-line to catch items like bolts, nuts, tools, debris and anything that may have found it’s way in the line during installation or maintenance.
The Gator is a remote controlled tank cleaning unit we built for Veolia Environmental Services. It is driven into large tanks to clean the walls of hazardous materials. Its infrared lights cut through the dark and mist while recording all operations from the safety of a control booth.
This is a test of the unit running up a ramp and squeezing through a manway as it would enter a tank in the field.