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Risk Assessment MM01: Milling Machines, Study notes of Engineering

Machines must not be left with work 'set up' unless necessary as this stops others from using the machine, teaching 'Labs' must be given.

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University Health and Safety Risk assessments
Code of Practice for Student Workshops
Risk Assessment Milling Machine (Horizontal and Vertical)
17 February 2016
1 of 4 Ref; Health & Safety Executive Engineering in Workshops
Risk Assessment MM01: Milling Machines
ESTABLISHMENT
University of Cambridge, Dept of Engineering,
Dyson Centre for Engineering Design
DEPARTMENT
Dept of Engineering
WORK ACTIVITY
MILLING MACHINES (VERTICAL)
HAZARDS
Contact with revolving cutters can present a hazard
Long hair, loose clothing can become entangled in
the moving parts of the milling machine
Work pieces, broken cutting tools, swarf etc can be
violently ejected from the milling machine
Milling machines can cause electric shock
Closing movements of parts under power can result
in finger trapping
Closing movements between the table and fixed
structures can result in body crushing
Heavy objects such as vices and index fixtures can
fall from the table
Sharp edges on cutters, work pieces and swarf can
cause cuts
Contact with cutting fluids, oil and grease can
irritate skin
Swarf can jam the machine or be ejected if allowed
to build up
Accidental starting of the machine can cause a
hazard
Lack of sufficient space around the machine can
lead to the operator being pushed by passers by
resulting in injury
Slippery floors or loose items around the machine
can cause slips that result in contact with the
moving parts of the machine
Manual handling of heavy items such as vices and
index fixtures can be a hazard
THOSE AT RISK
Anybody working in or checking on the progress of
projects in the Student Machine Tool Section of the
Dyson Centre for Engineering Design
WHO IS ALLOWED
TO USE THE
MACHINES
Only fully recognised trained and qualified persons
can use the machines and will instruct Students in
the safe use of the machines, long term Student
users may also be deemed competent to use the
machines. Machines must not be left with work ‘set
up’ unless necessary as this stops others from
using the machine, teaching ‘Labs’ must be given
priority. Certification can be issued to Students that
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Code of Practice for Student Workshops Risk Assessment Milling Machine (Horizontal and Vertical) 17 February 2016

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Risk Assessment MM01: Milling Machines

ESTABLISHMENT University of Cambridge, Dept of Engineering, Dyson Centre for Engineering Design DEPARTMENT Dept of Engineering

WORK ACTIVITY MILLING MACHINES (VERTICAL)

HAZARDS (^)  Contact with revolving cutters can present a hazard  Long hair, loose clothing can become entangled in the moving parts of the milling machine  Work pieces, broken cutting tools, swarf etc can be violently ejected from the milling machine  Milling machines can cause electric shock  Closing movements of parts under power can result in finger trapping  Closing movements between the table and fixed structures can result in body crushing  Heavy objects such as vices and index fixtures can fall from the table  Sharp edges on cutters, work pieces and swarf can cause cuts  Contact with cutting fluids, oil and grease can irritate skin  Swarf can jam the machine or be ejected if allowed to build up  Accidental starting of the machine can cause a hazard  Lack of sufficient space around the machine can lead to the operator being pushed by passers by resulting in injury  Slippery floors or loose items around the machine can cause slips that result in contact with the moving parts of the machine  Manual handling of heavy items such as vices and index fixtures can be a hazard THOSE AT RISK (^)  Anybody working in or checking on the progress of projects in the Student Machine Tool Section of the Dyson Centre for Engineering Design

WHO IS ALLOWED TO USE THE MACHINES

 Only fully recognised trained and qualified persons can use the machines and will instruct Students in the safe use of the machines, long term Student users may also be deemed competent to use the machines. Machines must not be left with work ‘set up’ unless necessary as this stops others from using the machine, teaching ‘Labs’ must be given priority. Certification can be issued to Students that

Code of Practice for Student Workshops Risk Assessment Milling Machine (Horizontal and Vertical) 17 February 2016

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are competent as recognition of their ability.

RISK CONTROL

MEASURES

Switchgear  The machine must be provided with a means of isolation using a fused switch disconnector on or adjacent to the machine, and that it is controlled by a starter incorporating overload protection and no- volt release. Machines in this area will be isolated ‘out of hours’ to stop unauthorised use.

Emergency Switchgear The machine must be provided with:  A conveniently positioned mushroom headed stop button or other suitable control device such as fitted to older machines that can bring the machine to rest within 10 seconds in an emergency, must be fitted.

Cabling  All cabling should be armoured to protect it from damage.

Flooring and Space  There must be sufficient space around the machine to prevent the operator being accidentally pushed by passers-by causing contact with moving parts of the machine. Student numbers in this area must be controlled.  The floor surface must not be slippery and must be kept free of loose items and swarf.  There must be a space of at least 500 mm between the machine table at the extreme ends of its travel and any fixed object. Fixed and Interlocked Guards  The machines in the Student Machine Tool Section of the Dyson Centre for Engineering Design are fitted with recognised guarding. Because of Student accessibility to this area this guarding must be in place a not removed. Operator Safety and Personal Protective Equipment  Only one person at a time may operate the machine, unless training is being given.  The operators must wear eye protection when on the workshop floor at all times and when using the machine.  Substantial, non-slip, flat-heeled shoes that cover

Code of Practice for Student Workshops Risk Assessment Milling Machine (Horizontal and Vertical) 17 February 2016

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 If metalwork fluids are used they must be mixed and changed in accordance with the manufacturer’s instructions.  Supplier’s hazard data sheets (COSHH) and risk assessments for metalworking fluids must be available.  Contact of metal work fluids with the skin must be minimised  Hands must always be washed thoroughly after the use of metalworking fluids.

Maintenance of Machine  The machine to be repaired as and when needed with any possible safety issues reported immediately

Manufacturer’s Instructions  A copy of the manufacturer’s instruction book should be kept in the departmental office. Where these are not available due to the passage of time a working knowledge of the machine must be known by a skilled operator.

FURTHER ACTION REQUIRED TO CONTROL RISK

 Machine operators and Student must ensure that they are in a fit state of health to use the machine, and any possible condition of concern must be reported, if the operator is feeling unwell, they must report to their line manager

ACTION BY PERSON

 To ensure that they are responsible for the health and safety of themselves and others.

ASSESSED BY

DATE

Signed by trainee/inductee to confirm they are happy they have read and understood this document Date