ES&H Manual



6610 Appendix T4

Requirements for the Safe Use of Chemicals



Jefferson Lab has determined that working with chemicals carries an unmitigated Risk Code >2. At a minimum all tasks requiring chemicals are discussed with the supervisor prior to commencement of work. An Operational Safety Procedure (OSP) is written 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 recognizes that a chemical’s safety data sheet (SDS) provides comprehensive safety requirements. Chemical workers are to review the chemical’s SDS and this appendix, and follow the more stringent of the two requirements.


This program satisfies applicable federal, state, and local requirements as outlined in ES&H Manual Chapter 2410 Appendix T1 Hazard Issues List.


2.0            Scope


It is recognized that listing the requirements for every chemical used at Jefferson Lab would be prohibitive, it is therefore required that qualified chemical workers read and follow the requirements/recommendation listed on a chemical’s SDS. This procedure defines actions required by Jefferson Lab in addition to or above those listed on the SDS.


This appendix’s process steps are performed in coordination with ES&H Manual Chapter 6610 Chemical Hygiene Program.


3.0            Responsibilities

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


3.1              Qualified Chemical Worker

·         Review and abide by the requirements/recommendations on a chemical’s SDS.

·         Ensure the safety of yourself and others during operations. Contact your supervisor/Subcontracting Officer’s Technical Representative/Sponsor if events progress beyond your training.

·         Be knowledgeable regarding the location and use of emergency showers, eyewash units, spill kits, and appropriate fire extinguisher(s).


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

·         Authorize access to areas where chemicals are used and/or stored only to qualified and appropriately trained workers.

·         Establish decontamination procedures which include the periodic wiping down of work surfaces to remove drips, residue, and spills.

·         Ensure emergency showers, eyewash units, spill kits, and appropriate fire extinguisher(s) are available and in proper working order.


4.0            Expectations


Unless otherwise stated, anyone at Jefferson Lab may perform the process steps outlined below.


4.1              All Chemicals

·         Contact the Industrial Hygienist to review chemical procedures to ensure special handling requirements are in-place.

·         Post warning signs and contact information outside areas when unattended chemicals are “in-process,” in accordance with an approved work control document (e.g., an Operational Safety Procedure (OSP) form).

·         Wear appropriate personal protective equipment. See ES&H Manual Chapter 6610 Appendix T5 Personal Protective Equipment for Chemical Handling.

·         Keep lids of chemical containers closed except when adding or removing contents.

·         Open containers slowly and carefully.

·         When soaking components in chemicals outside of a fume hood, place a lid over the container. Refer to ES&H Manual Chapter 6630 Appendix T1 Engineering Controls – Local and Portable Exhaust Systems for information on the proper use of chemical fume hoods.

·         When mixing two substances, slowly add the higher density substance to the lower, and stir continuously.

·         Never empty carboys or drums of chemicals by means of air pressure.

·         Use a mechanical aid or a pipette bulb for pipetting.


4.2              Flammables

·         Contact the Fire Protection Engineer to ensure adequate fire safety and control precautions have been taken for the work area.

·         Control all ignition sources when handling flammable chemicals. 

·         Use grounding and bonding techniques to prevent static build-up particularly while performing transfer operations between containers. Contact the Industrial Hygienist if you need assistance with this operation.


5.0            Revision Summary


Revision 1.1 – 06/14/16 – Periodic Review; replaced Material Safety Data Sheet (SDS) with Safety Data Sheet (SDS) 

Periodic Review – 06/28/13 – No substantive changes per J.Williams

Revision 1.0 – 07/05/10 – 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 6/16/2016.