Work Item
ASTM WK78157

Revision of D7430/D7430M-21 Standard Practice for Mechanical Sampling of Coal

Rationale

The Task Group decided that one area of the current standard that can be improved is to add language to Sections 9.4 and 9.5 which address the design and movement of sample cutters - particularly cross belt primary cutters. One area of improvement is language to address the importance of backwash skirting in the primary hopper and the high wear wiper on the back of the cross belt cutter. A second area is language to further describe the importance of beveling on the cutter lips. A third is to develop some new figures to illustrate the above. A final area is to add a figure of a rotary cutter.

Details

Developed by Subcommittee: D05.23

Committee: D05

Staff Manager: Melissa Marcinowski

Work Item Status

Date Initiated: 08-27-2021

Technical Contact: Paul Reagan

Item: 011

Ballot: D05 (22-02)

Status: Negative Votes Need Resolution

Item: 010

Ballot: D05 (22-02)

Status: Negative Votes Need Resolution

Item: 009

Ballot: D05 (22-02)

Status: Negative Votes Need Resolution