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REV03994
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REV03994
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Entry Properties
Last modified
8/25/2016 1:02:00 AM
Creation date
11/21/2007 9:13:54 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980006
IBM Index Class Name
Revision
Doc Date
11/28/2005
Doc Name
Preliminary AdequacyReview Letter & Cost Summary
From
DMG
To
Kerr Coal Company
Type & Sequence
RN5
Media Type
D
Archive
No
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HOURLY PRODUCTION sheet 2 of 2.... <br />Hauling Capacity <br />Basis <br />Material weight : 2,550 pounds/LCY <br />Material description <br />Earth -Dry packed <br />Rated payload : 48,000 pounds <br />Payload capacity : 18.82 LCY <br />Cvcle Time <br />Scraper loading time' : 2.00 <br />Maneuver and spread time : 0.70 <br />'load time per scraper pair on push-pull models <br />Bowl (volume) Basis <br />Struck volume <br />Heaped volume <br />Average volume <br />Adjusted capacity <br />14.00 LCY <br />20.00 LCY <br />17.00 LCY <br />17.00 LCY'•' <br />hourly production reBects volume per scraper pair on push-pull models <br /> Job Condition Corrections : Site altitude (ft.) : 8,200 <br /> Scraper Push dozer Source <br />minutes Altitude adj.: 1.000 NA (Cat HB) <br />minutes Job efficiency : 0.830 NA (Cat HB) <br /> Net correction : 0.830 NA <br />Travel time <br />Road condition description :Rutted dirt, little maintenance, no water, 2" fire penetration <br />Haul Route <br />Seg. # Haul distance (feet) Grade (%) Roll. res. (%) Total res. (%) Velocity (fpm) Travel time (min.)" <br />1 400 5.00 5.00 10.00 740 0.56 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Haul time : 0.56 minutes <br />Return route <br />"travel time For each segment is adjusted for acceleration/deceleration. Return time : 0.27 minutes <br />table velocities are max. attainable per total resistance shown, not average <br />Total scraper team cycle time (load + haul + maneuver and spread + return) : 3.53 minutes <br />Unadjusted unit production/hour : 288.67 LCY/hour "' Adjusted forjob conditions : 239.60 LCY/hour <br />Optimal number of scrapers per push dozer : NA Selected number of scrapers : 1 scraper(s) <br />Adjusted single scraper team (unit) hourly production : 239.60 LCY/hour <br />Adjusted multiple scraper team (fleet) hourly production : 239.60 LCYlhour <br /> <br />JOB TIME AND COST ~~ ~ ~~~ ~ ~~ ~~~~ <br />Fleet size : 1 Team(s) Total job time : 6.95 Hours <br />Unit cost : $0.621 /LCY Total job cost : $1,033 <br />
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