ES&H Manual



6160 Appendix T2

Identification and Classification of

Permit-Required Confined Space (PRCS)



At Jefferson Lab a Confined Space Entry (CSE) Permit is considered to be a Work Control Document and thus a Standard Protecting Measure. Only when all hazard issues associated with the PRCS and the work activity are acknowledged and mitigated, in accordance with this program, can the area’s associated Risk Code be considered <2. At a minimum, all work requiring entry into a PRCS is discussed with the entry supervisor prior to commencement of work. 


A formal Task Hazard Analysis and Operational Safety Procedure is required for work considered to be Risk Code >2 in accordance with ES&H Manual Chapter 3210 Work Planning, Control, and Authorization Process.


1.0            Purpose


Jefferson Lab’s Facility Design and Modification Review process, outlined within ES&H Manual Chapter 3110 Facility Design and Modification Review, provides initial identification of Permit-Required Confined Spaces (PRCS). This appendix describes:

·         How to identify a PRCS

·         How to request a classification or re-classification of an area


2.0            Scope


This appendix applies to confined spaces defined in Chapter 6160 Appendix T1 Listing of Permit-Required Confined Space Locations. For information on all posting and entry requirements contact Industrial Hygiene.


The process steps for this procedure are performed in coordination with ES&H Manual Chapter 6160 Confined Space Program.


3.0            Responsibilities

NOTE:           Management authority can be delegated to a task qualified JLab employee at the discretion of the responsible manager.


3.1              Anyone at Jefferson Lab

·         Request a hazard evaluation to classify an identified or suspect area meeting the criteria of a PRCS. 


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

·         Ensure appropriate identification of PRCS under your authority.


3.3              Confined Space Coordinator

·         Perform an appropriate classification and posting of PRCS, as required per evaluation.


4.0            Process Steps


4.1              Identify PRCSs


One of the following sign (or similar) are posted at the entrances to identified PRCSs:


Figure 1: PRCS

Figure 2: PRCS - Eligible for Alternate Entry Certificate


4.2              Reclassify a PRCS 


Anyone at Jefferson Lab may contact Industrial Hygiene and request a hazard evaluation to classify any confined space or reclassify PRCS. In order to be considered a Non-Permit Confined Space hazards must be eliminated without entry.


Step 1               Perform a “Permit Required Confined Space classification evaluation to determine the area’s appropriate classification.


Step 2               Reclassify the area as appropriate:

·         Post appropriate signage.

·         Inform the following of the determination:

1.      Facilities and Logistics Management

2.      The space owner

3.      Any concerned party(s)


5.0            Revision Summary


Revision 2.0 – 10/14/16 – Periodic Review; formerly titled ‘Confined Space Entry Training Requirements; added process steps for reclassification of a PRCS area; updated TPOC from R.Owen to J.Williams

Revision 1.1 – 07/23/14 – Update TPOC from J.Kelly to R.Owen

Revision 1.0 – 06/20/12 – Update to reflect current laboratory operations

Revision 0.0 – 08/30/06 – Update to web version











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 2/21/2018.