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6122
Appendix T2 Hot Work
Personal Protective Equipment (PPE) |
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Jefferson Lab
recognizes that hot work exposes workers to certain recognized hazard
issues, some of which can be mitigated through the use of appropriate personal
protective equipment (PPE). This appendix provides information on how to:
·
Determine the appropriate PPE.
· Obtain the appropriate PPE.
Each authorized hot work station poses its own unique hazard(s). Required PPE, over and above that listed within this document, is defined within a system or areas Hot Work Permit or Operational Safety Procedure (OSP).
PPE does not take the place of
engineered and administrative control measures; rather it is used in
conjunction with them to increase safety at Jefferson Lab.
This appendix applies to Jefferson Labs minimum hot work PPE
requirements. See ES&H
Manual Chapter 6620 Personal Protective Equipment Program
for guidance regarding the use of additional standard PPE.
Certain hot work generates airborne
contaminates that may not be adequately removed by engineered controls (i.e.
local exhaust ventilation). Contact Industrial
Hygiene to perform a hazard evaluation to determine appropriate controls.
The
process steps for this procedure are performed in coordination with ES&H Manual Chapter 6122 Hot Work (i.e. Welding, Cutting, Brazing, and
Grinding) Safety Program.
NOTE: Management authority may be delegated to a task qualified Jefferson Lab employee at the discretion of the responsible manager.
3.1 Qualified Hot Work Operator
·
Inspect PPE before and after use. Dispose
of damaged items appropriately.
·
Wear appropriate PPE while working.
· Frequently change or alternate gloves and other protective clothing to avoid perspiration, oil and grease accumulation.
3.2 Supervisor/Technical Representative (TR formerly SOTR)/Sponsor
· Ensure specialized PPE, which meets code and compliance requirements, is available and utilized by Qualified Hot Work Operators.
Unless otherwise stated the Qualified Hot Work Operator uses the PPE as outlined below.
4.1
Welding Helmet/Welding Goggle/Face Shields:
Compliant with American National
Standards Institute (ANSI) Z87.1 Practice for
Occupational and Educational Eye and Face Protection.
These lenses provide eye protection from non-ionizing radiation
emitted from the welding arc. Minimum requirements are:
· Lenses comply with ANSI/ASC Z49.1-2005 Safety in Welding, Cutting, and Allied Processes.
·
Frames/lenses are
compatible with the welding helmet.
·
Identifiable
manufacturer's marking, and shade number are legible.
·
Adequate outer cover
protection for lens.
Operation |
Protectors |
Electrode
Size in. (mm) |
Arc Current
(Amperes) |
Typical
Filter Lens Shade |
Shielded
Metal Arc Welding (SMAW) |
Welding
Helmet |
<3/32
(2.4) 3.32-5/32
(2.4-4.0) 5.32-1/4
(4.0-6.4) >1/4
(6.4) |
<
60 60-160 160-250 250-550 |
7 8-10 10-12 11-14 |
Carbon
Arc Welding (CAW) |
Welding
Helmet |
|
|
14 |
Gas
Metal Arc Welding And
Flux Cored Arc Welding (FCAW) |
Welding
Helmet |
|
<
60 60-160 160-250 250-550 |
7 10-11 10-12 10-14 |
Gas
Tungston Arc Welding (GTAW |
Welding
Helmet |
|
<50 50-150 150-500 |
8-10 8-12 10-14 |
Plasma
Arc Cutting (PAC)/Torch Cutting |
Welding
Goggle, Faceshield,
or Helmet |
|
<20 20-40 40-60 60-80 80-300 300-400 400-800 |
2-4 5 6 8 8-9 9-12 10-14 |
Torch
Brazing |
Welding
Goggle, Faceshield,
or Helmet |
|
|
2
to 4 |
Torch
Soldering |
Welding
Goggle, Faceshield, or Helmet |
|
|
2 to 4 |
Laser
Welding Contact the
Laser Safety Officer |
|
|
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NOTE: The above listed shade
designations are not authorized for use with lasers. See ES&H Manual Chapter
6410 Appendix T3 Laser Personal Protective Equipment to determine
appropriate protection for this type of work. |
All specialized PPE used for hot work is made from leather or similar flame-resistant material. Items include:
·
Gloves
·
Apron
·
Leggings
·
Arm Covering (e.g.
cape, sleeves, or shoulder covers)
Respiratory
protection may be required per your work control document, or as determined by
a hazard evaluation, contact Industrial Hygiene for review.
Wear appropriate foot protection.
Wear appropriate work attire made of natural fibers, such as
cotton, to minimize the chance of burns from welding slag, sparks, and radiated
heat:
·
Long pants (no cuffs)
·
Long sleeved shirt (no
roll-ups)
5.0
Obtaining PPE
Required
PPE (either by work process or as documented in the work control document) is
available through Webstock, the stockroom, your supervisor, or Industrial Hygiene. See ES&H Manual 6620
Appendix T1 Selecting, Acquiring, Training, and Caring for Personal Protective
Equipment for further information.
6.0
Revision Summary
Revision 1.2 09/07/21 Updated ESH&Q to ES&H; updated contact information; other minor edits. No approval required.
Periodic Review 03/25/16 No changes per TPOC
Revision 1.1 09/14/12 Clarification made to Welding Helmet/Welding Goggle/Face Shields requirements
Revision 1.0 04/14/11 Update to reflect current laboratory operations.
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ISSUING
AUTHORITY |
TECHNICAL
POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
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|
ES&H Division |
03/25/16 |
09/07/24 |
1.2 |
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