Questions and Answers
What does JHA stand for?
What does RA stand for?
Who signs off on the JHA?
Job Leader & Supervisor
What does the JHA cover?
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What is considered PPE for chainsaw work? (Select all that apply)
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Chaps must stop a chain in how many seconds?
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What temperature do nylon chaps melt?
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What is the NFPA standard for chaps?
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What is the speed rating for chaps?
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Does complexity trump size?
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What is the Go/No Go Checklist?
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What should you do if you don't feel comfortable with the felling assignment?
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Chaps should be treated as a _______ piece of PPE
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How do you clean chaps?
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What is the job of the depth gauge (raker)?
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What are the 3 most common types of saw chains?
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What are the characteristics of Chipper chains?
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What are the characteristics of Chisel chains?
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What are the characteristics of Semi-Chisel chains?
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What is the function of the Tie Strap in a chainsaw?
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What does the Drive Link do?
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What is a Master Link?
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What are the 3 cutting sequences of chains?
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What are the critical factors to know when ordering replacement saw chain?
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What are the two most common types of bars?
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What type of carburetor do chainsaws have?
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What are the 3 carburetor adjustments?
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What causes blue discoloration on a chainsaw bar?
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What is the Snap Test on Chain Tension?
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What are the 4 rules before adjusting tension on a saw chain?
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What is part of Daily Saw Maintenance?
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What are the aspects of Weekly Saw Maintenance?
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What is included in Monthly Saw Maintenance?
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What are the 3 angles of the saw chain?
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Turn the saw off if you're traveling more than ______.
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Set the brake if you're traveling more than ______.
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What are the two approved gas canisters?
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Can you drop start a saw?
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When starting a saw, is the brake on/off?
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What is the command when starting your saw?
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What are the two types of wedges?
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What is the difference between a Cant Hook and a Peavey?
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What is the most common fuel container?
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What is the NFPA standard for fuel containers?
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Containers must be filled at what %?
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Always place the fuel container on a grounded surface 10' away from any ignition source?
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Outdoor refueling requires you to be 20' away from an open flame?
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Allow the saw to cool for how long before re-fueling?
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Do not start the saw closer than 10' from the fueling area?
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What are the responsibilities of a chainsaw operator?
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What are the responsibilities of a swamper?
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What are the four methods of moving cut material? (Select all that apply)
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What are windows in chainsaw operations?
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What are keyholes in chainsaw operations?
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What does banking refer to in cuts?
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What does dragging refer to in chainsaw operations?
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What does chaining refer to in cut material management?
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What does throwing refer to in cut material management?
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What does MIST stand for?
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Crown fires require removal of canopy, what's the minimum canopy clearance?
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What is the difference between Progressive and Leap Frog Line Construction?
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What is kickback?
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How can you avoid kickback?
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What is Pull In?
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What is Push Back?
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What is Offside?
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What is the minimum escape path for a chainsaw operation?
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Is the last cut made to the compression or tension side?
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What are the steps for cutting top binds?
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What are the steps for cutting bottom binds?
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What are the steps for cutting side binds?
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What is Blowdown?
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What are Spring Poles?
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What is Boring?
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What is Spring Pole Cutting?
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What are the 5 elements of the tree felling process?
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How big should the cutting area be?
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The first 2 cuts are known as the ______ cut.
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The last cut is known as _______.
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What determines the direction the tree will fall?
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What are the two parts of the Undercut?
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How do you typically choose a wedge?
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What are some tree felling techniques? (Select all that apply)
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What should you do after the undercut and before your back cut?
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How do you mitigate leaners?
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How do you mitigate hangups?
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What is stump/low stumping?
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What are the key components of a Falling Plan Outline?
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Study Notes
Job Hazard Analysis (JHA)
- JHA stands for Job Hazard Analysis.
- Identifies job site hazards and outlines policies, controls, and practices to minimize risks.
Risk Assessment (RA)
- RA is synonymous with JHA, serving the same purpose in hazard identification and mitigation.
JHA Approval
- The Job Leader and Supervisor are responsible for signing off on the JHA.
JHA Coverage
- Includes tasks to be completed, potential hazards, hazard abatement measures, emergency evacuation procedures, first aid, and personal protective equipment (PPE) required.
PPE for Chainsaw Work
- Essential PPE items: Hardhat, ANSI approved eye protection, foot protection, gloves, hearing protection (85 dB minimum), long sleeves, pants, chaps, fire shelter, first aid kit, bar cover, and whistle.
Chaps Specifications
- Chaps must stop a chainsaw chain in 5 seconds to provide adequate protection.
- Nylon chaps melt at 500°F.
- NFPA standard for chaps is 1977.
- Chaps are rated for a chain speed of 3200 feet per minute.
Complexity vs. Size
- Complexity is prioritized over size when evaluating cutting situations.
Go/No Go Checklist
- Assists sawyers in determining whether a cutting situation matches their skills or certifications.
Handling Discomfort
- If uncomfortable with a felling assignment, refuse the operation and consult a more experienced faller for guidance.
Go/No Go Components
- Components include hazards, clearance, hinge, snags, tops, platforms (wedges), and escape routes.
Saw Chain Types
- Common types of saw chains: Chipper, Chisel, Semi-Chisel.
- Chipper chains are versatile and easy to file.
- Chisel chains are aggressive and cut fastest in clean wood but dull quickly.
- Semi-Chisel chains maintain sharpness longer and resist dirt.
Chain Components
- Tie Strap: Connects saw chain segments.
- Drive Link: Engages with the bar and sprocket to drive the chain.
- Master Link: Joins the ends of the chain; use a maximum of two per chain.
Cutting Sequence of Chains
- Standard (Full Comp), Semi-Skip, and Skip (Full Skip).
Ordering Replacement Saw Chain
- Key specifications needed: Pitch, Gauge, Number of Drivers.
Common Bar Types
- Solid Nose and Sprocket Nose (Roller Tip).
Chainsaw Carburetors
- Chainsaws feature a 2-stage carburetor for versatility in operation.
Carburetor Adjustments
- Three key adjustments: Idle Speed, Low Speed, High Speed.
Maintenance Practices
- Daily: Inspect bar/chain, air filter, muffler, power head, and safety features.
- Weekly: Check anti-vibration components, spark plugs, and clean muffler screen.
- Monthly: Inspect chain brake, clutch spring, fuel filter, and flush fluids.
Chain Angles
- Three angles to consider: Side-plate angle, Top-plate cutting angle, Depth gauge.
Safety Protocols
- Turn off the saw before adjusting tension, wear gloves, ensure the saw is cool, and re-check tension after each fuel cycle.
Fuel Container Practices
- Use approved canisters (MSR, Sigg), fill to 90% capacity, and maintain safety distances from ignition sources.
Saw Start Procedures
- Always start with the chain brake engaged; announce "Starting Up" when beginning.
Wedge Types
- Single Taper for lifting and Double Taper for reducing binding.
Cutting Techniques and Responsibilities
- Cant Hook is used for rolling logs, while Peaveys assist in avoiding pinching logs while bucking.
- Chain saw operators are responsible for fire monitoring and managing disposal sites for cut materials.
Material Movement Methods
- Techniques for moving cut material include throwing, banking, chaining, and dragging.
Crowning and Line Construction
- Crown fires necessitate an 18-20 foot clearance from the canopy.
- Progressive line construction involves cutting swaths for heavy fuels, while leap frog is for light fuels.
Kickback Prevention
- Avoid kickback by maneuvering the saw appropriately, using both hands, and ensuring the chain is sharp.
Handling Binds and Low Stumping
- Use specific cutting techniques for top, bottom, side, and end binds.
- Stump/low stumping involves using wedges to prevent pinching.
Felling Process Elements
- Key steps in tree felling include size-up, cutting area control, undercut, backcut, and safe exit routes.
- The undercut is the initial cut that establishes the direction of the fall.
Wedge Selection
- Wedges should generally be half the size of the tree diameter for effective use.
Mitigating Techniques
- Methods for dealing with leaners include boring backcuts or triangle cuts.
- Hangups can be mitigated through chunking down, rigging, or using equipment for assistance.
Minimal Impact Suppression Tactics (MIST)
- MIST focuses on efficient and minimally invasive fire suppression methods.
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Test your knowledge on Job Hazard Analysis (JHA) and Risk Assessment (RA) relevant to wildland chainsaw operations. These flashcards cover key concepts, responsibilities, and practices to maintain safety in hazardous work environments.