UC San Diego SearchMenu

Chemical Hazard Use Application (CHUA)

Learn how to use the Chemical Hazard Use Application, or CHUA.

CHUA is a Web-based tool provisioned with Hazard Control Plans (HCPs) for work with hazardous chemicals. At UC San Diego a hazard control plan is a standard operating procedure.

Requirement for researchers

UC San Diego requires investigators to log in to the Chemical Hazard Use Application to create Hazard Control Plans for work with hazardous chemicals and processes. See the High Hazard Chemicals List and Hazardous Chemicals and Processes List below on this page.

Principal investigators, use CHUA to:

  • Select or create HCPs for hazardous chemicals in your lab
  • Manage your authorized personnel list
  • Assign lab personnel to Hazard Control Plans
  • Assign personal protection equipment to lab personnel
  • Confirm and document employee safety training


Expand all

Access CHUA from My Research Safety

Note: CHUA is on the My Research Safety* Web portal. You must have a UCSD Business Systems (sometimes referred to as Single Sign-On) user name and password to access the CHUA application.

How to access CHUA:

  1. Go to the My Research Safety Web portal.
  2. Click CHUA/HCPs.
  3. Log in through Single Sign-On to open CHUA.
  4. Click the 'Help' tab to learn the capabilities of each role and tab.
Need help with CHUA?

* The My Research Safety Web portal is operated and maintained by Environment, Health & Safety (EH&S).

CHUA's Hazard Control Plan templates

Use CHUA's Hazard Control Plan templates to develop lab specific HCPs. Principal investigators are responsible for ensuring their lab-specific Hazard Control Plan will provide a safe working environment.

For help in drafting your Hazard Control Plans review the Hazard Control Plan Resources page.

CHUA has 2 types of Hazard Control Plan templates:

1. CSSC-approved Hazard Control Plans

These templates are approved by UC San Diego's Chemical Safety & Surveillance Committee (CSSC) for work with materials identified as high hazard chemicals. See the "High Hazard Chemicals List" below on this page.

  • For work with a listed high hazard chemical, investigators are required to log in to CHUA and use the CSSC-approved Hazard Control Plan template.

2. EH&S-reviewed Hazard Control Plans

These are standard Hazard Control Plan templates for work with thousands of other hazardous chemicals and processes grouped by hazard classification.

  • For work with a listed hazardous chemical or process, investigators are required to log in to CHUA and use the EH&S-approved Hazard Control Plan template.

Create a Hazard Control Plan

Create a new HCP in My Research Safety:
  1. Click the My HCP tab. 
  2. Click the Create HCP button. 
  3. Choose the Principal Investigator  from the drop down.
  4. Use the CSSC HCP Chemical List drop-down menu and select a chemical. (Note: A Hazard Control Plan cannot be created for a chemical that is already on the CSSC HCP Chemical List.) 
  5. Click the Create button.
  6. Hazardous Material – Step 1 allows you to add chemicals you will be working within your HCP. Use the Search box to locate the chemical(s) you will be working with, tick the chemical once you find it and click Add Chemical to HCP. (If your HCP is already a chemical and you will not be using any other chemicals, skip this step.) You can add comments and instructions in the Lab Instructions box next to your selected chemical by typing and clicking Update. Click the arrow to go forward to Step 2.
  7. Project Summary/Lab Specific Instructions – Step 2 contains two lab responsible fields. In the Project Summary box, provide a short summary of how the material(s) will be used. Include the names of the chemicals and a short abstract of the project (1 or 2 sentences). In the Lab Specific Instructions box provide detailed instructions about how this material will be used. Consider the following when populating this field: quantities, concentrations, conditions of use, unusual or dangerous characteristics, PI restrictions, where it will be used, scale-up restrictions and physical process highlights such as heating, pressure, cooling, etc. Click Save when finished. 
  8. Hazard Control Plan – Step 3 cannot be edited and is meant to be for instructional purposes only.
  9. HCP Lab Personnel – Step 4 Allows lab personnel to be added to the Hazard Control Plan. Use the Select Lab Personnel link to add lab employees and then utilize the Email HCP to recipient button at the bottom to send an e-mail notification of their HCP assignment.
  10. HCP Submittal – In Step 5, only the PI can submit a Hazard Control Plan and should do so promptly upon completion. Click Approve HCP

Important – The PI must approve Hazard Control Plan assignments and lab personnel must acknowledge receipt of their assignment.

See the "Assign Hazard Control Plans to your lab" section below to learn how to assign an existing Hazard Control Plan.

Complete your Lab Personnel list

How to complete your Lab Personnel list in CHUA:

  1. Click the 'My Personnel' tab at the top of the screen. If you do not see all of your lab personnel listed, add the missing names.
  2. Click the 'Add New Personnel' button.
  3. The 'People Search' box will open. Or, use the 'Open Search' button to find and add names to your list.
  4. When your Lab Personnel list is complete, assign an appropriate Hazard Control Plan to each employee. See the 'Assign Hazard Control Plans to personnel' section below.

Assign Hazard Control Plans to personnel

Important The PI must approve Hazard Control Plan assignments and lab personnel must acknowledge receipt of their assignment notification e-mail before beginning work with a hazardous chemical.

How to assign Hazard Control Plans in CHUA:

  1. Click either the 'CSSC HCPs' or 'All HCPs' tab at the top of the screen.
    • Note: CSSC Hazard Control Plans are required for chemical agents identified as high hazard by the CSSC. See the "High Hazard Chemicals List" section on this page.
  2. Select a Hazard Control Plan.
    • Note: An employee may have multiple HCP assignments if the lab has multiple hazardous chemicals in inventory. Repeat these steps to assign a different chemical Hazard Control Plan.
  3. Click the 'Create LAB HCP' button. The selected HCP chemical will be displayed.
  4. Press 'Create' to continue. Follow the arrows to assign personnel to the Hazard Control Plan.
  5. Have the PI press the 'Submit HCP' button (only the PI can do this) to approve the assignment.
    • E-mail notifications are automatically sent to the lab personnel you assign to this Hazard Control Plan.
  6. Confirm employees acknowledge their Hazard Control Plan assignments.

Read about the assignment/confirmation process:

When a Hazard Control Plan is assigned, your lab personnel receive a "Hazard Control Plan Acknowledgement Request" e-mail with the Hazard Control Plan attached.

  • Lab personnel must acknowledge their Hazard Control Plan assignment by clicking the 'Please click here to confirm' link in their e-mail notification.
  • Clicking the link logs the employee into CHUA where the employee acknowledges they have received and read their Hazard Control Plan assignment.
  • The PI and Lab Contact get an e-mail confirmation when an employee acknowledges a Hazard Control Plan assignment. Confirmation is also tracked in CHUA.
  • CHUA sends a monthly reminder e-mail to authorized personnel, the PI, and the Lab Contact when the Hazard Control Plan assignment is not acknowledged.

Update your Lab Personnel list

Use the 'My Personnel' tab in CHUA to view or edit contact information, personal protective equipment (PPE), and training details for lab personnel by selecting a name in the displayed list.

How to update contact information:

  1. Enter 'Mail Code.'
  2. Enter 'Email Address.'
  3. Enter 'Home Phone.'
  4. Enter 'Office Phone.'
  5. Enter 'Save.'

How to update PPE:

  1. Click the 'PPE' tab.
  2. Under the 'Available PPE' section, click the PPE drop-down menu to select PPE. 
  3. Complete the 'Issuance' selection.
  4. Complete the 'Provided by' field.
  5. Complete the 'Provided on' field.
  6. Click the 'Assigned Personnel PPE' button to save the entry.

How to update training records:

  1. Click the 'EH&S Training' tab.
  2. Under the 'Add Training Course' selection, click the 'Training Course' drop-down menu to select a course.
  3. Complete the 'Course Date' field.
  4. Upload the training certificate by clicking the 'Browse' button. Select the certificate from your computer.

High Hazard Chemicals List

Chemical agents identified as high hazard chemicals by the UCSD Chemical Safety & Surveillance Committee:

Chemical CAS









Cadmium chloride


Carbon disulfide


Carbon monoxide




Cyanogen bromide








Germanium Tetrahydride


Hydrofluoric acid (liquid)


Hydrogen cyanide


Hydrogen peroxide (90%)


Hydrogen selenide


Inorganic Mercury compounds

Methyl isocyanate


MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine)


Nickel carbonyl


Nitric Oxide


Nitrogen Dioxide






Organomercury compounds

Osmium tetroxide










Phosphorous Oxychloride


Potassium arsenate


Potassium cyanide


Select agents and toxins

Selenium hexafluoride




Sodium cyanide




Tellurium hexafluoride




Thallous sulfate


Titanium (IV) chloride


Trifluoroacetic acid




Hazardous Chemicals and Processes List

Standard templates are available for these hazard classifications:

  • Acutely Toxic Materials
  • Autoclave
  • Carcinogens
  • Centrifuge
  • Compressed Gas
  • Engineered Nanomaterial Category 1
  • Engineered Nanomaterial Category 2
  • Engineered Nanomaterial Category 3
  • Flame Sterilization
  • Flammable Class I
  • Flash Chromatography
  • Gel Electrophoresis
  • Glove Box
  • Health Hazard
  • Microtome
  • Organic Peroxides
  • Piranha Solution
  • Potentially Explosive Materials
  • Pyrophorics
  • RCA Cleaning Procedure NANO3
  • Reproductive Hazards
  • Select Agents and Toxins
  • Solvent Purification Systems
  • Sonicator
  • Strong Corrosives
  • Strong Oxidizers
  • Strong Reducers
  • Volatile Anesthetics
  • Water Reactive Materials

Tag out chemicals not in use

"Tag out" chemicals to keep them in inventory for future use without having to write a SOP/HCP by attaching a SOP Required sticker (PDF) to the container.

The SOP Required sticker signifies the chemical is "tagged out" and may not be used by anyone until these conditions are met:

  1. A Hazard Control Plan has been generated
  2. Research staff have been assigned to the Hazard Control Plan
  3. All individuals comply with and sign off on all aspects of the Hazard Control Plan prior to its use
  4. The PI approves and signs the Hazard Control Plan

Contact the Research Assistance Program specialist assigned to your area to request a supply of "SOP Required" stickers.

Regulations and policies

Guiding principles

(From Prudent Practices in the Laboratory)

The OSHA Laboratory Standard (29CFR 1910.1450) breeds a culture of safety consciousness, accountability, organization and education.

All faculty and research supervisors should note that a vital component of science/chemical education is teaching students how to identify the risks and hazards in a laboratory. Such education serves scientists well, and places them at a professional advantage, in their ultimate careers in government, industry, academe, and the health sciences.

Hazard Control Plans incorporate risk assessments, planning, and step-by-step safety protocols, which are all as much a part of scientific education as learning the theoretical background of an experiment. Nurturing basic attitudes and habits of prudent behavior is crucial so that safety is valued and becomes an internalized attitude, not just an external expectation driven by institutional rules.

Expand all

Note: This page has a friendly link that's easy to remember: http://blink.ucsd.edu/go/chua