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6121Appendix
T1 Safe
Operation of Machine Tools |
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NOTE: 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 to a task qualified Jefferson Lab employee at the discretion of the responsible manager.
·
Only use a machine
tool when:
1.
You are trained and
qualified.
2.
You are authorized by
your supervisor.
3.
You are authorized by
the Machine Owner / Machine Shop Supervisor / Machine Tool Granting Authority.
4.
You have read, signed,
and agreed to abide by the most current machine tool specific work control
document; OSP.
·
If you cannot abide by
the OSP, you must suspend the machine tool task and contact your supervisor and
the OSP owner to seek resolution in accordance with ES&H Manual Chapter
3310 Appendix T1 Operational Safety Procedure (OSP) and Temporary Operational
Safety Procedure (TOSP) Instructions.
·
Use
required PPE (refer to ES&H
Manual Chapter 6620 Personal Protective Equipment Program and ES&H Manual Chapter 6640
Hearing Conservation) and 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 working order and guards are in place and used as
required for the operation being performed. 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.
3.2
Machine Tool Operator Supervisor
·
Authorize
individuals to use a specific machine tool for which they will be trained /
qualified by the Machine Owner / Machine Shop Owner / Machine Tool Granting Authority.
·
Ensure
that the individual was trained / qualified for a specific machine tool by the Machine
Owner / Machine Shop Owner / Machine Tool Granting Authority.
·
Validate
training / qualifying of a specific machine tool and that the Machine Tool Operator
has signed the most current machine tool specific work control document.
·
If
the individual has not been granted authorization for use of a specific machine
tool contact and seek resolution with the specific Machine Shop Manager /
Machine Owner / Machine Tool Granting Authority.
·
If
the individual you supervise cannot abide by the OSP, the individual must
suspend the machine tool task and contact her / his supervisor and the work
control document owner to seek resolution in accordance with ES&H
Manual Chapter 3310 Appendix T1 Operational Safety Procedure (OSP) and
Temporary Operational Safety Procedure (TOSP) – Instructions.
3.3
Maintenance Personnel
·
Ensure
that you are qualified and knowledgeable of the machine tool operation prior to
beginning any maintenance work.
·
If
it becomes necessary to terminate power to the machine tool, refer to 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.
3.4
Machine
Shop Manager
/Machine Tool Owner / Machine Tool Granting Authority
·
Ensure
and validate that an individual seeking to use a specific machine tool is
authorized by their supervisor.
·
Establish
and maintain a program for training / qualifying an individual on each specific
machine tool under your authority.
·
Grant
approval for use of a specific machine tool under your authority.
·
If
the individual has not been granted authorization or their authorization is
revoked for use of a specific machine tool, communicate with the individual’s
supervisor and seek resolution and or an understanding of the matter.
·
Establish
and maintain 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 Safety
Data Sheet (SDS). Refer to ES&H Manual Chapter 6610
Chemical Hygiene.)
·
Establish
and maintain adequate clearance around machine tools (see 29
CFR 1910 Subpart N).
·
Enforce
the use of required personal
protective equipment (PPE). Refer to 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
the machine tool is in working order and guards are in place and used as
required for the operations being performed.
·
Do
not allow any temporary or make-shift repairs to machine tools (see 29
CFR 1910 Subpart O).
·
Ensure
an Operational
Safety Procedure (OSP) is maintained for each machine tool in accordance
with ES&H Manual
Chapter 3310 Operational Safety Procedure Program.
3.5
Associate Directors and Department
Managers
·
Ensure
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
Procedure (OSP)
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.
|
NOTE: There is no specific
OSHA standard for lathe chucks; however, there is a National Consensus
Standard, ANSI B11.6-2001 (R2012) and it shall be used as a guideline for
applying the general guarding requirements. |
·
Limits of machine
operations.
·
Emergency
“Shut-down/Restart” procedures.
·
Inspection
and maintenance requirements.
·
Selection
and use of appropriate PPE, including 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.
4.2
Train Machine Tool Operators
·
Attend training as
required by the Machine Shop Manager / Machine Owner / Machine Tool Granting
Authority.
·
Read,
sign, and agree to abide by the most current, tool specific work control
document; OSP.
Machine tools are inspected prior
to use. Any inadequacies are reported to the Machine Tool Manager / Machine
Tool Owner / Machine Tool Granting Authority 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
|
NOTE: 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
·
American
National Standards Institute (ANSI) B 11 Series, Machinery Safety Series
6.0
Revision
Summary
Revision 0.5 – 04/24/18 – Updated Responsibilities, Process
Steps, and References for machine guarding per CATS# IA-2017-05-01-07,
CATS# IA-2017-05-08-01, CATS# IA-2017-05-09-01
Revision 0.4 – 04/19/16 – Periodic
Review; MSDS
replaced with SDS per updated OSHA regulations
Revision 0.3 – 08/19/14 – Updated TechPOC from N.Walker to
B.Manzlak
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 0.0 – 09/21/09 – This is original content
|
ISSUING
AUTHORITY |
TECHNICAL
POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
|
ES&H Division |
04/24/18 |
04/24/23 |
0.5 |