Re: Modification Of Plant Design Basics As A Result Of Climate …
Among your many site material property behavioral changes, rubber is highly impacted. Conveyor belts may take much higher power to operate dependent on its glass transition temperature. Test the E' and E" properties over the anticipated range. Read the literature on this subject such as the "Power of Rubber: Part I" and the "Channar 20 km Overland...", I authored in Bulk Solids in the 1990's. ■
Re: Modification Of Plant Design Basics As A Result Of Climate …
If you have pressurised equipment you must check that the steel used has been Charpy tested. As far as I recall the limiting temperature is -29 C.
Most of your alloys will go brittle at your proposed working. In the conveying scenario I would expect the drums to exhibit cracking sooner.
Also check the mounting of any cast iron gearboxes on steel subframes. If the support frame shrinks/distorts the wrong way you can expect the casings to crack in tension under hogging.
Linings might rattle into disarray if the bolts haven't been adequately tightened for shrinkage.
Belt cleaning could also be a problem if frozen debris still remains after the belt has been flexed. Can it? I'm a bit of a warmer waters lad myself. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Modification Of Plant Design Basics As A Result Of Climate Change
WE WOULD LIKE TO MODIFY OUR COPPER CONCENTRATE EXPANSION PLANT SITE CONDITION DOCUMENT ACCORDING TO CLIMATIC CHANGES EXPERIENCED IN THE SITE LOCATION THIS YEAR. ACCORDING TO CLIMATOLOGISTS THE CHANGES IN CLIMATIC CONDITION OF THE SITE WOULD LAST FOR THE COMING NEXT YEARS. THE NEW PROJECT IS LOCATED ALONG SIDE AN EXISTING PLANT WHERE THE SITE TEMPERATURE REACHED A NEW MINIMUM RECORD OF MINUS 40 CENTIGRADE DEGREE THIS WINTER. THIS IMPOSED US MANY UNFORESEENABLE PROBLEMS. SO WE WOULD LIKE TO EVALUATE THE EFFECT OF REDUCING THE MINIMUM SITE TEMPERATURE FROM -20 CENTIGRADE DEGREE TO -40 CENTIGRADE DEGREE ON THE PLANT BASIC DESIGN AS WELL AS ON THE EQUIPMENT SPECIFICATION, TIME AND COSTS REQUIRED TO MAKE SUCH MODIFICATION, ETC. ■