ES&H Manual



6122 Appendix T4

Hot Work Area Posting Requirements



1.0             Purpose


Jefferson Lab recognizes that hot work is inherently dangerous. It is therefore required that designated areas and associated equipment be labeled to provide warning of potential hazards. This appendix defines Jefferson Lab’s labeling and posting requirements; and how to update, repair, and maintain these labels. 


NOTE:  When secondary hazards are identified, such as high noise, these postings are supplemental to the Hot Work Area Signage.


2.0             Scope


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.


3.0             Responsibilities

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

·         Request an equipment/area hazard evaluation from Industrial Hygiene if compliance with these requirements is unclear.


3.2              Industrial Hygiene

·         Perform equipment/area hazard evaluation and provide postings as appropriate.


3.3              Supervisor/Technical Representative (TR)/Sponsor

·         Ensure that warning labels are posted in accordance with requirements.


4.0             Process Steps


4.1              Equipment Labeling


4.1.1        Manufacturer’s Labels

Do not remove manufacturers’ equipment label(s). Contact the manufacture if labels are missing or damaged. Read and follow manufacturer’s warnings. 


4.1.2        Equipment Inspection Label

Jefferson Lab requires biannual inspection of welding and cutting equipment by a certified inspector, and that equipment be readily identifiable as being in compliance. See ES&H Manual Chapter 6122 Appendix T3 Equipment Inspection Procedure.


Example Inspection Sticker:



4.2              Area Posting Requirements


4.2.1        Hot Work Areas – All hot work is performed within designated limits. The safe distance is determined during the hazard evaluation and will be denoted on the Hot Work Permit or other work control document. At a minimum hazard cones, rope, and require signage are used to keep unauthorized individuals away. 


Examples of Required Signage for Welding Areas



Caution Stainless Steel Welding 2 


4.3              Update, Repair, or Maintenance to Labels 

Anyone at Jefferson Lab may request new, update, repair, or maintenance to a hazard posting.

·         Contact Industrial Hygiene and state the posting that needs review.

o   If it is determined that the posting is defective, Industrial Hygiene will rectify the situation.

o   If posting is adequate, Industrial Hygiene informs the concerned party(s) of the determination.


5.0             Revision Summary


Revision 1.1 – 09/07/21 – Periodic Review – Update header and footer, changed ESH&Q to ES&H, changed SOTR to TR, minor edits, no approval needed

Periodic Review – 03/25/16 – No changes per TPOC

Revision 1.0 – 04/14/11 – Updated to reflect current laboratory operations.












ES&H Division

Jenord Alston





This document is controlled as an on-line file.  It may be printed but the print copy is not a controlled document.  It is the user’s responsibility to ensure that the document is the same revision as the current on line file.  This copy was printed on 9/7/2021.