First, describe the work and worksite
A trained glazier will score and break identified monolithic annealed sheet glass to approved dimensions on a supported ground-level cutting table in a separated indoor work bay. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- The glass type, cutting tools, table support and edge-finishing method are confirmed before work.
- The selected piece is not destined for a location requiring an unprovided safety-glazing product.
- Tempered, heat-strengthened, laminated and insulating-glass units, power cutting and heat treatment are excluded.
Questions before work
- How is the stock positively identified as cuttable annealed glass?
- Does the specified end use require a different safety-glazing product?
- Where will sharp offcuts and finished pieces be restrained?
Build the analysis one step at a time
What will the worker do? How could someone be harmed? What prevents or reduces that exposure? Who checks the control, and when?
1. Release the stock and end use
Hazard: The wrong glass type can shatter or create unsuitable glazing for the opening.
Control: Lead verifies stock identity and the approved fabrication/end-use specification. Keep uncertain glass out of production; do not attempt field cutting of tempered glass or replace specified safety glazing with annealed stock.
Verification: Glazier compares glass identification and work order before handling.
Why this belongs in the analysis: Cutting suitability and end-use suitability are different checks.
2. Prepare the cutting table
Hazard: An unsupported sheet or clutter can cause breakage and falling shards.
Control: Provide the tool-specified flat support, stable table and clear edge/handling space. Separate the bay from traffic and arrange restrained locations for finished glass and offcuts.
Verification: Glazier checks the support and full sheet footprint.
Why this belongs in the analysis: The table must support both the sheet and the planned break.
3. Transfer and mark the sheet
Hazard: Heavy glass and unprotected edges can cut or strain workers.
Control: Use the planned team or handling aid and assessed hand, arm, eye and foot protection. Keep glass stable while measuring and marking; avoid edge contact with hard objects and do not reach across an unsecured sheet.
Verification: Handling lead verifies support before releasing the sheet.
Why this belongs in the analysis: Safe placement must precede fine marking work.
4. Score and make the controlled break
Hazard: An unpredictable break can eject shards or expose hands to sharp edges.
Control: Trained glazier follows the selected cutting tool’s scoring and breaking method on supported glass. Keep hands outside the intended break path and stop for damaged edges or an abnormal score; do not force an uncontrolled break.
Verification: Glazier checks score and support before applying the planned break.
Why this belongs in the analysis: A flawed score can change where the glass separates.
5. Finish and inspect edges
Hazard: Fresh edges and small shards can lacerate fingers or eyes.
Control: Use the specified manual edge-finishing method with stable support and assessed protection. Check dimensions and edge condition; segregate damaged pieces and keep offcuts contained without bare-hand pickup.
Verification: Glazier records fabrication acceptance against the work order.
Why this belongs in the analysis: A successful break does not complete edge safety or dimensional acceptance.
6. Contain waste and hand over
Hazard: Loose shards or unsecured finished stock can harm cleanup and installation crews.
Control: Place sharp waste in suitable puncture-resistant marked containers and use tools to collect fragments. Secure finished panes on suitable supports and transfer glass type and fabrication status to the installer.
Verification: Lead checks the bay and finished-stock identification.
Why this belongs in the analysis: The next handler needs to know both the glass type and edge condition.
What does a useful control look like?
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Use the planned team or handling aid and assessed hand, arm, eye and foot protection. Keep glass stable while measuring and marking; avoid edge contact with hard objects and do not reach across an unsecured sheet. |
| Check that everything is ready. | Lead verifies stock identity and the approved fabrication/end-use specification. Keep uncertain glass out of production; do not attempt field cutting of tempered glass or replace specified safety glazing with annealed stock. |
Decisions that change the analysis
Can a tempered pane be resized using this score-and-break method?
No. This method is bounded to positively identified annealed stock. Obtain the correctly fabricated safety-glazing product when tempering or another approved type is required.
What must the crew record for actual use?
Identify the actual equipment and work boundaries, responsible people, applicable criteria, inspection findings and open actions. Resolve changes with affected crews and obtain required project authorization before work.
Agree when the crew will pause
- Stock type or safety-glazing requirement is unclear.
- Sheet damage, inadequate table support or uncontrolled break.
- Cutting station boundary or safe waste handling cannot be maintained.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting. Keep unresolved actions visible.
Download the worked example and free template
No account or paid membership required. The worked example contains planned controls. The blank template is for your own work; neither includes fabricated inspection results, signatures or approval.
Your editable working copy
Build and download your draft
Start blank or load the learning example. Replace its assumptions with your actual conditions and involve the people doing the work. Your entries stay in this browser tab; download a copy before leaving or refreshing.
1. Describe your work and site
2. Work through each task
Describe an observable step, how someone could be harmed, and the control that acts on that hazard. Identify who checks it and what evidence is needed.
3. Record changes, checks, and open actions
Walk the work area, review with the crew, and resolve missing controls. Follow the required approval process. This tool does not judge completeness, verify signatures or authorize work.
Open the downloaded file in a browser, then use Print → Save as PDF for a printable copy.
Training needs to confirm
- Demonstrated glass-type identification, scoring, breaking and manual edge finishing.
- Sheet handling, laceration prevention and sharp-waste containment.
Confirm applicable qualifications, task instruction and actual training evidence for the people assigned. Related toolbox talks support crew discussion; they do not establish competence.
Common questions
Can this example be used as a JSA?
Adapt its Task | Hazard | Control analysis to the employer’s format and actual conditions. The example is a teaching aid, not evidence that controls were checked.
What changes if the project requires an AHA?
Use the governing AHA format, risk method, supporting records and acceptance process. The published formwork AHA demonstrates that additional structure; changing a JHA title does not supply it.
Are these resources part of a paid course?
This walkthrough, browser draft builder and downloads are free public resources, separate from Academy course enrollment.
References and source note
Original instructional scenario with planned controls. Primary references support hazard planning. Use actual equipment and product instructions, project design and employer requirements to establish field criteria. Use actual equipment instructions and site requirements alongside these references. Reference review: October 9, 2026.