5th September Grosvenor Electrical MRE
POINTS TO NOTE
Shift Tradesman Reports scanned and emailed to engineering and maintenance staff as well as EEM and MEM.
No sign off of reports, what evidence they are read and actioned.
Weekly overview of Uncertified Portable Electrical equipment by Shift Engineers.
Should be daily as part of their normal duties
Gas monitors positions in roadways. Electricians need ladder to do calibration. Company do not want to lower due to mobile machinery damage.
Electrical Incidents
4 of 6 listed Electrical HPI’s have no Investigation report available on site and Inspector asks for them to be located and forwarded. AGAIN Production Readiness Checklist.
Should have been part of system Panel Standards from start of mine.
New Checklists Bridgeman boasts about are not even in use at the Grosvenor mine
Recommend that the old ones be replaced, and crews made aware from an Inspector. Recommendations mean nothing and he does nor even recommend proper training
Draft Switching for 3.3kV in Longwall to be introduced by Recommendation of Inspector.
Longwalls have 3.3kV electrical transformers etc.
WHAT SWITCHING PROCEDURES WERE THEY OPERATING ON UP TO NOW?
Electricians undertaking 3 monthly “trade talk”.
What a coincidence that 3 monthly talk happens to be on the same day as a scheduled Electrical Inspector visit
CONTROL ROOM
Real time Gas Monitor #37, located at 17 to 18 c/t in C heading Tailgate are in alarm and ventilation change being done to allow men to work in the Longwall return.
Non production shift apparently on Longwall.
What vent changes had to take place to allow men to work in return?
Is it to get methane below 1% in the tailgate to allow diesel and electrical machinery to be deployed?
Changing ventilation pressures across the goaf as well as contributing to changes in methane migration from the goaf also contribute to spontaneous combustion occurring in a goaf over time.
Tube bundle return 101 longwall continually in alarm. Excessive methane continually triggering the alarm.
Out of Service and Information Tags not being put on cables where required as per Site Tagging Procedures and Electrical Procedures.
Inspector no need to train and assess and make sure the Tagging procedure is followed. “Timely to highlight to the tradesmen”. Beyond WEAK, Against the Regulations.
Remote Isolation Process
Neither could tell what different Isolation procedures are needed for remote operation and not sure of tasks and any training required
How can the Automation Engineer possibly do his job without knowing this?
Inspector asks for flowchart of conducting remote operation as well as tasks that can be performed and using systems that use Safety Integrity Level (SIL) as an engineering confirmation
Communication DAC cable not correctly installed from the start
TARP for number of Flippers that can be non operational.
ERZC had no idea.
How can he be an ERZC for the longwall panel?
Mandated in standards especially for heavy roof conditions. Well it is at normal Mines
2 different ways to isolate crusher motor terminals.
1 method is complex (likely official proper method), or just removing 1 plug.
No voltage detector carried by the Electrician.
ADMINISTRATION
Bridgeman
Not aware of Safety Alert 332
Aware of Alert Shuttle Car Auto Repower in ERZ1. Part of Trade Talk, No training or assessing
FAKE ELECTRICAL LICENSE used at another mine
All Substandard practices and Recommendation no legal standing.
Test for Dead Instruments substandard
Recommend
3.3kVswicthing sheets
Forward pan to address constant alarming of 2 gas monitors
Signage for flashing strobe in Longwall
Production Readiness Checklist for electrical installations and trailing cables
