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_REVISION - M1988112 (2)
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_REVISION - M1988112 (2)
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Entry Properties
Last modified
6/18/2021 9:20:57 AM
Creation date
11/21/2007 10:44:56 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1988112
IBM Index Class Name
Revision
Doc Name
TAILINGS PH ADJUSTMENT SYSTEM OPERATIONS REVIEW
Type & Sequence
TR5
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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~~ '• • • <br />SECTION 8.0 <br />MAINTENANCE SAFETY PROCEDURES <br />~~ 8.1 ROUTINE CHECKS <br />Procedures for inspection and maintenance of equipment and <br />instrumentation will be developed by BMGC. The following <br />list is not complete but includes some of the items which <br />will require regular attention: <br />^ checking belt tensions and alignment of drives, <br />^ checking drive guards, <br />^ inspection of rubber linings in tanks and Hoppers, <br />^ inspecting and tightening of flanges in pipes and ducts, <br />^ calibration of pH meters, <br />^ replacement of sensing heads in HCN detectors, according <br /> to manufacture r's recommendations, <br />^ calibration of HCN monitor in scrubber stack, following <br />J manufacturer's recommended procedures, <br />8.2 SAFE TY PROCEDURES <br />J Specific procedures will be developed by BMaC for safe <br />access to and maintenance of equipment in the pH Adjustment <br />System. <br />J Potential hazards exist in exposure of personnel to residual <br />concentrations of HCN gas in tanks and vessels on which <br />~~ maintenance is to be performed. No operations or <br />maintenance personnel should enter any tank or other <br />enclosure in the Tailings pH Adjustment Systefi until the <br />prescribed safety procedures have been carried out and the <br />area certified as safe. At no time should any Fperson carry <br />out inspection or maintenance work inside tanks without the <br />knowledge and presence of a second person. <br />,} Procedures required to purge all residual traces of HCN from <br />tanks and hoppers include: <br />^ open drain valves to dump slurry to sumps, <br />' ^ thoroughly wash out vessel to remove all residual <br />slurry, <br />^ open access hatches and thoroughly purge the vessel <br />using forced ventilation. <br />J <br />pj/1517rp 012591 8-1 <br />J <br />t <br />
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