Safety in Grinding

Июль 24, 2022

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Safety in Grinding

Содержание

2. What are the main risks in a grinding workshop? Split in 3 groups 10 minutes individual
3. STOP categories:
4. Risk analysis 1 - Machinery Start of the mill or separator during visit ? LOTOTO –
5. Risk analysis 3 - Struck by vehicle Not specific to grinding activities 4 - Struck against
6. Risk analysis 6 - Slip, trip or fall on level For mill internal visit, the ball
7. Risk analysis 8 - Trapped by something collapsing Raw mills and coal mills: check the flap
8. Risk analysis 10 - Contact with harmful substances Mill visit: hot, material can be irritating Mill
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Слайд 2

What are the main risks in a grinding workshop?
Split in 3

groups
10 minutes individual reflection on
What activities do you regularly perform in a grinding workshop?
What are the main risks, specific to the grinding workshop? (using STOP categories)
How do you deal with these risks?
Common risk analysis

Слайд 3

STOP categories:

Слайд 4

Risk analysis
1 - Machinery
Start of the mill or separator during visit ?

LOTOTO – Never enter a mill without the key in your pocket!
During sampling or measurement beware of conveyor belts, valves… ? risk areas to be identified
2 - Struck by falling object
Not specific to grinding activities

Слайд 5

Risk analysis
3 - Struck by vehicle
Not specific to grinding activities
4

- Struck against
Not specific to grinding activities
5 - Handling, lifting or carrying
Careful when transporting measuring equipment (e.g. for sampling inside the mill)

Слайд 6

Risk analysis
6 - Slip, trip or fall on level
For mill

internal visit, the ball charge must be level
Easy when mill has a barring drive, but procedure must be followed
Without a barring device, a strict procedure has to be established and followed
7 - Fall from a height
Access to mill doors for internal visit ? the best is a direct access from platform ? otherwise, make sure to respect procedures (harness…)

Слайд 7

Risk analysis
8 - Trapped by something collapsing
Raw mills and coal

mills: check the flap on the hot gas inlet, can there be some material accumulated there?
9 - Drowning or asphyxiation
Mills with hot gas from preheater: good sealing of the flaps
Check flap closing
Maintain draft
Gas analysis
Coal mills: lock-out of inertisation system

Слайд 8

Risk analysis
10 - Contact with harmful substances
Mill visit: hot, material

can be irritating
Mill temperature < 50 °C (keep draft)
Proper PPE, long sleeves…
Sampling and measurement
11 - Fire or explosion
Coal mills
Raw meal blanket
Check CO measurement
HGG: risk of CO / CH4… accumulation