ES&H Manual



6540 Appendix T3

ODH Emergency Response Procedure



1.0            Purpose


Jefferson Lab recognizes that the physical and mental condition of individuals exposed to an oxygen deficient environment rapidly deteriorates and requires immediate action. This appendix outlines the procedure for responding to an oxygen deficiency event and/or an oxygen deficiency hazard (ODH) alarm. 


2.0            Scope


The ODH Emergency Response Procedure outlined in this appendix applies to individuals who are not trained or qualified to perform emergency response activities. Only individuals, trained in emergency response, have priority access to buildings and are authorized to respond according to their training. 


This appendix is written in coordination with ES&H Manual Chapter 6540 Oxygen Deficiency Hazard Control Program. All relevant content within the chapter applies to the procedure outlined in this appendix.



Emergencies related to cryogens are discussed in ES&H Manual Chapter 6550 Appendix T2 Emergency Response to Cryogens.

Emergency response for other situations is discussed in ES&H Manual Chapter 3510 Emergency Response Activities.


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              Anyone at Jefferson Lab

·         Perform the process steps in response to an ODH event and/or alarm.


3.2              Supervisor, Subcontracting Officer’s Technical Representative (SOTR), Sponsor

·         Determine appropriate muster points and inform individuals under your authority in accordance with the requirements of ES&H Manual Chapter 3510 Emergency Response Activities. See area evacuation maps for locations of muster points.

·         Report any near-miss or actual ODH events to the ES&H Reporting Officer in accordance with ES&H Manual Chapter 5200 Event Investigation and Causal Analysis Process.


4.0            Process Steps


Detection of Oxygen DeficiencyA potential oxygen deficiency is indicated when one or more of the following activates or is present:

·         A flashing ODH (blue) warning light

·         An ODH horn sounds

·         A loud warning tone, alarm vibration, or flashing light from a personal oxygen monitoring device

·         You or someone in your vicinity shows signs of exposure symptoms (see note below)

·         Visible vapor plume

·         Rushing gas sound



Personal symptoms include: dizziness, unexplained loss of coordination, increased heart rate. If any of these symptoms occur, seek fresh air and medical attention immediately even if the ODH alarm does not activate.


Step 1:      Don and Activate an Emergency Escape Pack (EEP) if available.


Step 2:      Evacuate the area. (If outdoors, evacuate 100 meters upwind from a plume. If indoors, evacuate out of the building and remain upwind.)

·         Stay away from vapor plumes.

o   If you see a vapor plume, use an alternate route.

o   If you find yourself in a vapor plume and do not have an EEP, hold your breath until you are clear.

·         If a worker is injured or unconscious, do not attempt to rescue them. 


Step 3:      Muster Point

·         Assemble at designated muster point identified by your Supervisor.

·         Call 911 and Occupational Medicine (x7539) immediately if:

o   Workers are missing or injured.

o   You are unsure of a person’s location or condition.


Step 4:      Notify (from a safe location)

·         Security (x 5822) immediately,

·         Occupational Medicine (x 7539),

·         Crew Chief (x 7045), and

·         Supervisor/SOTR/Sponsor/


Figure 1:  Flowchart for ODH Emergency Procedure



5.0            Revision Summary


Revision 1.4 – 11/06/17 – Periodic Review; deleted Non-Emergency Situation note as material is covered in T2, incorporated footnotes into text.

Revision 1.3 – 06/30/16 – Clarified Emergency Response Expectations

Revision 1.2 – 06/22/16 – Updated TPOC from D.Owen to J.Williams; added an additional detection method; clarified outdoor evacuation distance

Revision 1.1 – 06/27/13 – Added verbiage to clarify scope

Revision 1.0 – 01/17/12 – Updated to reflect current laboratory operations











ES&H Division

Jennifer Williams





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 11/7/2017.