ES&H Manual



3330 Appendix T2

Stop Work Order for Safety Procedure



1.0            Purpose


A Stop Work Order is initiated when an imminent danger has developed; a hazard issue is discovered and a Task Hazard Analysis (THA) reveals a post mitigated Risk Code >3; or individuals cannot resolve a hazard issue in an acceptable manner. 


2.0            Scope


A Stop Work Order is not meant to replace safety mitigation measures developed during work planning.  Rather it is primarily used when an unanticipated hazard of Risk Code >3 develops during work in progress.


This procedure does not take the place of “common-sense.”  Suggestions, recommendations, or other forms of communications, which takes place on a day-to-day basis between individuals and provide “on the spot resolutions” to safety concerns, are not required to be formally documented.


This appendix is written in coordination with ES&H Manual Chapter 3330 Stop Work and Re-Start for Safety Program, and all relevant content within the chapter applies to the procedure outlined in this appendix.


3.0            Responsibilities

NOTE:           Management authority may be delegated at the discretion of the responsible manager.


3.1              Everyone at Jefferson Lab

·         Take action to stop unsafe work that creates a hazard, anticipated or real, to yourself or others.

·         Respond to a Suspend Work or Stop Work Order by halting the work in question.  Take actions as outlined below.

·         Inform your supervisor/Subcontracting Officer's Technical Representative (SOTR)/Sponsor immediately if you receive or invoke a Suspend Work or Stop-Work Order.

·         Re-start work after a Suspend Work or Stop Work Order following the procedure outlined in ES&H Manual Chapter 3330 Appendix T4 Work Re-Start Procedure.

·         Assist in Task Hazard Analysis (THA) activities when requested by the Supervisor/SOTR/Sponsor for a stop work order.

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

·         Complete a Task Hazard Analysis(THA) for the suspended/stopped work activity.

·         Provide a THA it for reviewed to the Associate Director - Environmental, Safety, Health, and Quality (ESH&Q) as required.

·         Notify area Safety Warden of any stopped work.

·         Discuss the proposed/implemented resolution with the identifier to ensure the identified hazard was mitigated.

·         Inspect the area after resolution to ensure personnel safety.

·         For a STOP-WORK ORDER:

o   Notify the Division Associate Director or Manager.

o   Enforce the order and monitor the area for the duration of the Stop-Work Order to ensure work does not resume until properly authorized.

o   Assure re-start is authorized by the system department or division manager.

o   Use the Quality Assurance Issues Management Procedure to resolve the concern.

·         Provide feedback and lessons learned using the Quality Assurance Operating Experience, Feedback, and Lessons Learned Program.


3.3              Associate Director/Division Manager

·         Inform the Associate Director-ESH&Q.

·         Inform your Division Safety Officer (DSO).

·         Investigate all Stop-Work Orders within your department.

·         Ensure the required corrective actions are implemented including provisions for hazard characterization, assessment, monitoring and surveillance to ensure the corrective action is effective.

·         Issue written restart authorization after corrective actions have been agreed upon.


3.4              Associate Director ESH&Q

·         Inform Chief Operations Officer

·         Review THA to ensure accuracy.


4.0            Process Steps


4.1                          Identified Concern poses an imminent danger


4.2                          Stop Work Order Initiated.

·         The worker notifies their supervisor/Subcontracting Officer’s Technical Representative (SOTR)/sponsor that a Stop Work Order has been initiated.

·         The identifier notifies their supervisor/SOTR/sponsor that they have initiated a Stop Work Order.


4.3                          Authorities Notified                   

·         The worker’s supervisor/SOTR/sponsor completes Step One of the Stop Work Order Worksheet

·         Distributes copies as listed.


4.4                          Task Hazard Analysis (THA) Required

·         Worker’s supervisor/SOTR/sponsor completes a THA for the identified concern.

o   Outcome Risk Code <2 – Does this resolve the issue?  The initiator must agree that the identified concern has been adequately addressed.

§  Yes – Worker’s supervisor/SOTR/sponsor completes the Stop Work Order Worksheet and provides feedback and lessons learned to ESH&Q Reporting Officer.

§  No – Use the Quality Assurance Issues Management Procedure to resolve the conflict.

o   Outcome Risk Code >3 – Use the Quality Assurance Issues Management Procedure to resolve the concern.


4.5                          Work Re-Start

When an agreed upon resolution has been approved use ES&H Manual Chapter 3330 Appendix T4 Work Re-Start Procedure.


4.6                          Resume Work

·         Worker’s supervisor/SOTR/sponsor and the system owner ensure that work is not resumed until the Stop-Work Order Worksheet has been fully approved.  The worksheet, the THA, and the restart notice become part of the permanent Lessons Learned file.

·         Worker’s supervisor/SOTR/sponsor ensures that implemented safety measures continue to be used.


4.7                          Feedback and Lessons Learned

Worker’s supervisor/SOTR/sponsor provides Jefferson Lab relevant information regarding the Stop Work Order activities using the Jefferson Lab’s Corporate Operating Experience (COE) website.


Figure 1.  Stop Work for Safety



5.0            Revision Summary


Revision 1.2 – 10/02/14 – Technical POC changed from H.Fanning to B.May per M.Logue.

Periodic Review – 02/28/13 – No substantive changes per H.Fanning.

Revision 1.1 – Clarified Figure 1.

Revision 1.0 – 01/29/10 – Updated to incorporate Work Re-Start Procedure.










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ESH&Q Division

Bob May





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 10/3/2014.