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6121Appendix
T1 Safe
Operation of Machine Tools |
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Machine tools are inherently risky. Jefferson Lab has determined that use of a machine tool carries an unmitigated Risk Code 3. To reduce the risk to an acceptable level an Operational Safety Procedure (OSP) is written for each machine tool and read by operators prior to use. |
This appendix provides the safety rules applicable to operating machine tools at Jefferson Lab. It is based on Occupational Safety and Health Administration (OSHA) regulations and American National Standards Institute (ANSI) standards. Operator’s Manuals also provide valuable information and are used in preparation of OSPs and training.
This
document outlines the responsibilities and process steps for safe operation of
machine tools.
Portable
hand tools, which include manually powered tools, portable power tools, and
powder actuated fastening tools, are discussed in ES&H Manual Chapter
6120 Appendix T1 Portable Hand Tool Safe Practices.
The process steps for this
procedure are performed in coordination with ES&H Manual
Chapter 6121 Machine Tools.
NOTE: Management authority may be delegated at the discretion of the responsible manager.
·
Only
use machine tools which you are currently trained and authorized to use, in the
manner in which they were intended.
·
Use
required PPE (See ES&H
Manual Chapter 6620 Personal Protective Equipment Program and ES&H Manual Chapter 6640
Hearing Conservation. Seek
assistance with hazard awareness from Industrial
Hygiene).
|
NOTE: Wear appropriate clothing when operating
machine tools. Do not wear jewelry, neck wear, loose clothing, long hair, or other
items that can get caught in the machine. |
·
Ensure
that the machine tool is in proper working order and guards are in place before
operating. Do not make any temporary or
make-shift repairs to machine tools.
·
Ensure
that the proper tool, blade, or attachment is being used for both the machine
tool and material being worked on.
·
Ensure
that you are qualified and knowledgeable of the machine tool operation prior to
beginning any maintenance work.
·
If
it is necessary to terminate power to the machine tool use ES&H Manual Chapter 6110
Lock, Tag, Try (LTT) Program. Blocks,
chocks, and other physical devices may also be required to prevent unexpected
movement.
·
Refer
to the Manufacturer’s Operations Manual for minimum requirements and guidance.
3.3
Machine
Shop Manager
or Operator’s Supervisor
·
Establish
and maintain:
o
A
program for qualifying operators on each machine tool under your authority.
o
An
effective preventive maintenance program for each machine tool – minimal
requirements are those recommended by the manufacturer. (Ensure that machine lubricants are properly
stored, handled, and disposed of in accordance with the Material
Safety Data Sheet (MSDS) (See ES&H Manual Chapter 6610
Chemical Hygiene.)
o
Equipment-specific
administrative
control procedures for each piece of machinery. (See ES&H Manual Chapter 6111
Administrative Control Using Locks and Tags.)
o
Adequate
clearance around machine tools (See 29
CFR 1910 Subpart N).
·
Ensure
that operators are authorized and appropriately trained to use machine tools.
·
Enforce
the use of required personal
protective equipment (PPE). (See ES&H Manual Chapter 6620
Personal Protective Equipment Program and ES&H Manual Chapter 6640
Hearing Conservation. Seek
assistance with hazard awareness from Industrial
Hygiene.)
·
Ensure
that each machine tool has proper guards in place (See 29
CFR 1910 Subpart O).
·
Do
not allow any temporary or make-shift repairs to machine tools.
·
Ensure
an Operational
Safety Procedure (OSP) is maintained for each machine tool in accordance
with ES&H Manual
Chapter 3310 Operational Safety Procedure Program.
·
Ensure
that machine tools are properly maintained.
·
Ensure
that safety signs are posted in the vicinity of machine tools and at shop
entrances.
3.4
Associate Directors and
Department Managers
·
Ensure
that machine tool controls and authorization practices, under your authority,
are maintained. (Refer to ES&H Manual Chapter
6121 Appendix T1 Safe Operation of Machine Tools for guidance.)
4.1
Develop an Operational Safety
Procedures (OSPs)
An OSP is developed for each
machine tool in accordance with ES&H Manual Chapter
3310 Appendix T1 Operational Safety Procedure (OSP) and Temporary OSP Procedure.
The list of safety concerns
addressed in the OSP includes:
·
Selection and
installation of the appropriate attachments and/or tools (ex: drill bits,
blades, grinding wheel, etc.).
·
Adequate clearance
requirements.
·
Use and function of
guards.
·
Limits of machine
operations.
·
Emergency
“Shut-down/Restart” procedures.
·
Inspection
and maintenance requirements.
·
Selection
and use of appropriate PPE. This
includes push sticks, or other implements required to reduce risk to the
operator.
·
Containment,
handling, and storage of cutting fluids and bulk lubricants, when applicable.
The
OSP is reviewed and signed in accordance with ES&H Manual Chapter
3310 Appendix T1 Operational Safety Procedure (OSP) and Temporary OSP Procedure.
·
Attend specialized
training as required by Machine Owner.
·
Read/sign
the appropriate OSP for the machine tool.
·
Demonstrate
performance to a competent and trained operator.
·
Receive
management authorization.
Machine tools are inspected prior
to use. Any inadequacies are reported to
the supervisor/owner of the equipment for determination.
Look for:
·
Housekeeping
(both the equipment and work area)
·
Appropriate
stability
·
Power
cord condition
·
Condition
of blade or work tool
·
Condition
and functionality of guards
·
Check
chuck tightness on lathes and drill presses
·
Check
tightness of necessary bolts on milling machine
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If machine deficiencies are detected, shut the equipment down, tag it out of service in accordance with ES&H Manual Chapter 6111 Administrative Control using Locks and Tags, and do not use it until it is repaired, tested, and approved for service. |
5.0
References
·
OSHA
Regulation 29 CFR 1910 Subpart N, Material Handling and Storage
·
OSHA
Regulation 29 CFR 1910 Subpart O, Machinery and Machine Guarding
6.0
Revision
Summary
Revision
0.2 – 04/23/13 – Added
link to Machine Shop OSP Templates.
Revision
0.1 – 09/28/12 – Periodic
Review. Clarification made to
responsibilities only.
Revision
0 – 09/21/09 – This
is original content.
|
ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW
REQUIRED DATE |
REV. |
|
ESH&Q Division |
09/21/09 |
09/28/15 |
0.1 |