JHA / JSA / AHA builderPowered Wet Glass Edge Finishing JHA
A JHA breaks the work into steps, hazards and controls. Use this example to build a draft for your actual job and review it with your crew.
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Step 1 of 4 · Working draft
Your job
Tell Jenkins what you’re planning and where the work will happen. Use the actual job details.
Use the published example’s suggestions when they fit your task, or write your own steps. These are planned controls, not verified worksite conditions.
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.
Walk through the plan with the people doing the work. Resolve missing controls and agree who checks them. Moving to the next step does not approve the work.
Confirm people, equipment and emergency arrangements
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.
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Your Powered Wet Glass Edge Finishing JHA
Walk through the job in order. Use these possible hazards, planned controls and checks to start a conversation about your actual work.
011. Accept the glass and finishing requirements
Possible hazards: An unsuitable glass type or unnoticed damage can lead to breakage or an unusable component.
Planned controls: Match the identified annealed pieces to the specified edge treatment and end use. Inspect edges and surfaces, reject damaged or unapproved pieces and confirm the actual machine instructions before staging.
Check before work: Fabricator records glass identity, permitted piece range and the required finished-edge check.
022. Prepare the guarded wet machine and bench
Possible hazards: A moving belt can entangle material; water and damaged electrical equipment can expose workers to shock.
Planned controls: With movement isolated, inspect guards, belt condition, work support and the prescribed water system. Accept the stable bench, protected supply and cable route; select eye, splash and clothing controls suited to the machine.
Check before work: Operator checks guards, electrical protection and water readiness against the selected-model instructions.
033. Arrange continuous pane support and the feed position
Possible hazards: Unsupported glass can tip or pinch fingers; loose clothing or gloves can enter a moving belt.
Planned controls: Stage pieces on a stable rack within the approved handling range. Establish the instructed grip and support, keep the belt and nip zones clear and resolve the machine-specific hand-protection choice before starting.
Check before work: Operator rehearses the supported feed position with the machine stopped and removes snagging items.
044. Run the controlled wet finishing pass
Possible hazards: Loss of water, excessive pressure or an unstable piece can produce fragments and unexpected glass movement.
Planned controls: Start and feed according to the actual instructions while maintaining support and required water flow. Keep the contact area visible, avoid forcing the piece and stop for binding, vibration, damage or failed wet controls.
Check before work: Operator monitors pane support and wet operation throughout each pass and segregates suspect pieces.
055. Stop and inspect before adjustments
Possible hazards: Coasting movement or automatic restart can injure a worker clearing debris or changing a belt.
Planned controls: Remove the supported piece to its rack, stop and wait for all movement to cease. Apply the actual energy-isolation procedure before adjustment, cleaning or belt change; never reach into a running or coasting belt.
Check before work: Authorized person verifies stopped and isolated equipment before accessing the guarded area.
066. Check the edge and manage wet waste
Possible hazards: A damaged edge or poorly controlled slurry can injure the next handler and make the workshop slippery.
Planned controls: Inspect the finished edge against the specified acceptance criteria and label rejected pieces. Collect wet debris and slurry by the approved method, restore guards after maintenance and leave the bench and floor safe.
Check before work: Fabricator records accepted pieces, waste disposition and the machine status for the next operator.
Example scope and starting conditions
A glazing fabricator finishes the edges of small, accepted annealed monolithic glass pieces using a guarded bench-mounted wet abrasive belt sander at a ground-level site workshop. Glass selection, previous cutting and the specified end use are released before this operation. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Partial site-fabrication coverage: powered wet edge finishing only; no scoring and breaking, tempering, laminated-glass separation or IGU fabrication.
- The actual machine instructions identify suitable glass, belt, guards, work support and water arrangement; the bench and electrical supply are accepted.
- Pane size and handling positions permit continuous controlled support without placing hands in the belt or nip points.
Know when to pause
- Pause for unapproved glass, damage, missing guards, failed electrical protection or an unsuitable feed position.
- Stop for loss of required water, belt damage, binding, abnormal vibration or slipping pane support.
- Larger pieces, a different machine or another glass build-up require a revised handling and fabrication plan.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting.
Free example and template
No account required. The worked example contains planned controls. The blank template is for your own work; neither includes fabricated inspection results, signatures or approval.
Worked exampleNeed help? Ask Jenkins
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For managers
Does the team have what it needs to carry out the plan? Give the crew time, equipment and support, and make it clear who will resolve anything that is missing.
Manager checks and supporting resources
Confirm the people doing the work have the time, equipment, information and support to carry out the plan. Agree who checks the controls and who resolves open actions.
Questions to resolve before work
- Which glass types and piece sizes are authorized for this actual machine and end use?
- How are electrical protection, belt guarding, water flow and pane support checked before feed begins?
- How does the operator isolate movement before clearing a jam, changing a belt or maintaining the water system?
Training and qualifications to confirm
- Demonstrate selected-machine setup, guarded feed, water and electrical checks, stopping and isolated belt-maintenance procedures.
- Train handlers to identify permitted glass, maintain support and assess finished edges without entering belt or nip zones.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Is this already taught in the annealed-glass cutting example?
That example scores and breaks an annealed pane and finishes its edge manually. This one starts with released pieces and manages a powered wet belt, guarding, supported feed, electrical protection and isolated maintenance.
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.
Keep planning connected
Resources that support this JHA
Additional tools for task planning and safe work. Start with the free resources; explore paid options only when they meet an additional need.
Toolbox talks for the work
Prepare a practical crew discussion.
Powered Tools: Check the Tool, Guard and Accessory →Electrical & Extension-Cord Checks →Eye & Face Protection →
Safety program resources
Review procedures, roles, and requirements.
Browse the existing catalog and confirm the scope and purchase availability of each program.
Browse safety programs →
Paid service · Availability
Task-specific training and qualifications
Explore applicable training and qualification needs.
Task-specific training services are not currently available to book here. Start with the free training-needs lookup; a toolbox talk or online course alone does not establish competence or employer authorization.
Review training needs · Free →People, equipment, emergency arrangements and open actions are recorded in the guided JHA’s Crew review step.
Open the crew review step →For safety professionals
How do we know the planning process and controls are working? Connect what the crew reports with field checks, risk decisions and the evidence behind your system.
Industry context, SIF, control verification and AHA review
Guidance and evidence
Review the method, risk decisions and evidence behind the plan. Use the actual jurisdiction, equipment instructions, employer process and project requirements.
Task-by-task control and verification rationale
1. Accept the glass and finishing requirements
Hazard: An unsuitable glass type or unnoticed damage can lead to breakage or an unusable component.
Control: Match the identified annealed pieces to the specified edge treatment and end use. Inspect edges and surfaces, reject damaged or unapproved pieces and confirm the actual machine instructions before staging.
Verification: Fabricator records glass identity, permitted piece range and the required finished-edge check.
Why this belongs in the analysis: A machine capable of abrading glass does not authorize alteration of every glazing product.
2. Prepare the guarded wet machine and bench
Hazard: A moving belt can entangle material; water and damaged electrical equipment can expose workers to shock.
Control: With movement isolated, inspect guards, belt condition, work support and the prescribed water system. Accept the stable bench, protected supply and cable route; select eye, splash and clothing controls suited to the machine.
Verification: Operator checks guards, electrical protection and water readiness against the selected-model instructions.
Why this belongs in the analysis: Water cooling is a process control and requires an electrical arrangement designed for that environment.
3. Arrange continuous pane support and the feed position
Hazard: Unsupported glass can tip or pinch fingers; loose clothing or gloves can enter a moving belt.
Control: Stage pieces on a stable rack within the approved handling range. Establish the instructed grip and support, keep the belt and nip zones clear and resolve the machine-specific hand-protection choice before starting.
Verification: Operator rehearses the supported feed position with the machine stopped and removes snagging items.
Why this belongs in the analysis: Cut protection during transport and entanglement control during powered feed must be considered together.
4. Run the controlled wet finishing pass
Hazard: Loss of water, excessive pressure or an unstable piece can produce fragments and unexpected glass movement.
Control: Start and feed according to the actual instructions while maintaining support and required water flow. Keep the contact area visible, avoid forcing the piece and stop for binding, vibration, damage or failed wet controls.
Verification: Operator monitors pane support and wet operation throughout each pass and segregates suspect pieces.
Why this belongs in the analysis: Increasing feed force can hide a process problem while increasing the chance of losing glass control.
5. Stop and inspect before adjustments
Hazard: Coasting movement or automatic restart can injure a worker clearing debris or changing a belt.
Control: Remove the supported piece to its rack, stop and wait for all movement to cease. Apply the actual energy-isolation procedure before adjustment, cleaning or belt change; never reach into a running or coasting belt.
Verification: Authorized person verifies stopped and isolated equipment before accessing the guarded area.
Why this belongs in the analysis: An off switch alone is insufficient when maintenance could expose someone to unexpected restart.
6. Check the edge and manage wet waste
Hazard: A damaged edge or poorly controlled slurry can injure the next handler and make the workshop slippery.
Control: Inspect the finished edge against the specified acceptance criteria and label rejected pieces. Collect wet debris and slurry by the approved method, restore guards after maintenance and leave the bench and floor safe.
Verification: Fabricator records accepted pieces, waste disposition and the machine status for the next operator.
Why this belongs in the analysis: Finishing must leave both a usable glass edge and a safe receiving and cleanup arrangement.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Stage pieces on a stable rack within the approved handling range. Establish the instructed grip and support, keep the belt and nip zones clear and resolve the machine-specific hand-protection choice before starting. |
| Check that everything is ready. | Match the identified annealed pieces to the specified edge treatment and end use. Inspect edges and surfaces, reject damaged or unapproved pieces and confirm the actual machine instructions before staging. |
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
- CRL BM64B Bench model wet abrasive belt sander: equipment and instruction resources
- OSHA 1926.300 Hand and power tools
- OSHA 1926.404 Wiring design and protection
- OSHA 1926.102 Eye and face protection
- OSHA 1926.21 Safety training and education
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. This example supplies no inspection findings or work authorization. Use actual equipment instructions and site requirements alongside these references. Reference review: October 9, 2026.
Developed by Todd Jerome Jenkins, MS, CSP · Edition v1.0 · October 13, 2026
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