Page 47 - Critical Control flipbook_Neat

Material Engulfment

1 What is the name of the 2 What are its specific objectives related to the Priority Unwanted
critical control for Material
Event (PUE)?
Engulfment?
Early Detection, Prevention and Regular inspection, maintenance and cleaning to avoid human entry
Maintenance System

3 What are the critical 4 What are the activities 5 What can be sampled from
within the management
control performance
the set of activities for
requirements to meet the systems that support verification, providing a
objectives? having the critical control clear image of the critical
able to do what is required? control status?
Moisture controlled Regulation of finish mill outlet Inspection processes content and
temperature (limit gypsum dehydration) frequency
and inspection in place to check for Cement Mill outlet Temperature
leaks/moisture entry exceedence vs set point
Use of dry air for transfers

Inspection, maintenance and cleaning Known threshold limits documented and Records of maintenance and cleaning
thresholds defined and followed for all understood by plant and maintenance completed according to known
material/transfer spaces teams thresholds on schedule

Evaluate and assess material inside Process in place to assess material Records of assessment process / scans
of material storage/transfer space to location and volume having been completed and effectively
determine location and volume eg., Scanning technology used from used for material build up evaluation/
outside of space action/decisions

Use of remote equipment/technology to SOP defining use of binwhip/cardox for SOP being followed during binwhip/
remove blockage/clean materials storage space developed and available cardox work activity

6 What is the target performance for critical 7 What is the critical control performance
trigger for shutdown, critical control review or
control?
investigation?
Inspection, cleaning and maintenance for material storage/ Human entry into material storage/transfer space
transfer spaces completed per scheduled thresholds without Cleaning threshold exceeded
entry to space

Creation date: 01/2021 • The latest and only controlled version of this document is available on the HSE intranet.
© 2021 Holcim - For internal use only