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RT-130, Wildland Fire Safety Training Annual Refresher (WFSTAR)

RT-130 Decorative banner. Group of photos depicting wildland firefighters performing various duties.

Chainsaw Operational Complexity and Tree Size-Up - When Complexity Changes

Identify common themes from the Wildland Fire Lessons Learned Center “2004-2019 Tree Felling Accident Analysis” to promote discussion between new and experienced sawyers about ongoing procedural size-up and complexity analysis, human factors affecting the cutting process, and complexity changing throughout a chainsaw operation.
Category: Hazards
Core Component(s):
Local Topics, Incident Reviews and Lessons Learned, Fire and Aviation Operational Safety, Human Factors, Communication and Decision Making
Estimated Delivery Time: 45 minutes
Video Length: 20:26

Intent

Identify common themes from the Wildland Fire Lessons Learned Center 2004-2019 Tree Felling Accident Analysis to promote discussion between new and experienced sawyers about ongoing procedural size-up and complexity analysis, human factors affecting the cutting process, and complexity changing throughout a chainsaw operation.

Facilitator Preparation

  • Review the video, module tools, and additional resources linked below.
  • Consider additional discussion questions pertinent to your location and agency.
  • Guide discussion based on the topics and guidance provided below from the NWCG Hazard Tree and Tree Felling Subcommittee.

Facilitating the Discussion

  • Show the video.
  • Pause video as questions appear on screen to facilitate discussion.
  • Optional: Conduct additional activities pertinent to your location and agency.

Discussion Questions

  1. What size-up process(es) have you used or seen?
  2. What factors affect which is the good side vs. bad side of the tree?
  3. What does cutting area control mean to you?
  4. What other human factors might influence the size-up process, complexity analysis, or overall cutting operation?
  5. What experiences have caused you to reevaluate your felling operation? How do you maintain your cutting area control?

Resources

Video Information

  • This video is also available as a download (zip file, size 1.2 GB) with .srt file for closed captioning (you may need to right click and Save As). For information on how to add closed captioning to a video, see this how-to page.
  • Note: For Chrome, Firefox, and Edge, right click the word download and select Save Link As; for Internet Explorer (IE), right click and select Save Target As.

Last Modified / Reviewed:

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Updated NWCG Standards for Water Scooping Operations, PMS 518

Date: December 19, 2024
Contact: Water Scooper Operations Unit

The NWCG Standards for Water Scooping Operations, PMS 518 establishes the standards for dispatching, utilizing, and coordinating water scooping aircraft on interagency wildland fires. These standards should be used in conjunction with the NWCG Standards for Aerial Supervision (SAS), PMS 505, and any local, state, or geographic/regional water scooping plans.

References:

NWCG Standards for Water Scooping Operations, PMS 518

Updated NWCG Standards for Aerial Supervision, PMS 505

Date: December 19, 2024
Contact: Interagency Aerial Supervision Subcommittee

The Interagency Aerial Supervision Subcommittee has updated the NWCG Standards for Aerial Supervision, PMS 505. PMS 505 establishes standards for aerial supervision operations for national interagency wildland fire operations. 

References:

NWCG Standards for Aerial Supervision, PMS 505

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Date: December 3, 2024
Contact: NWCG TRAINING

Two new job aids are now available: Packing List for Wildland Fire Fireline Personnel, J-101 and Packing List for Wildland Fire Support Personnel, J-102, should serve as a baseline for items needed on a wildland fire assignment. These lists will help personnel prepare for a 14 to 21-day assignment on the fireline or in a support role.

References:

Job Aid Catalog

NWCG Packing List for Wildland Fire Fireline Personnel, J-101

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Date: November 14, 2024
Contact: Equipment Technology Committee

The Equipment Technology Committee (ETC) has released Safety Warning: 24-001 Stihl Chainsaw Toolless Fuel Cap Spill Prevention. Misaligned toolless fuel caps on Stihl chainsaws have led to recurring fuel spillage, fuel ignition, and burn injuries during wildland fire management operations.

This Safety Warning is intended to highlight the details and recommended procedures for the installation of a Stihl chainsaw toolless fuel cap, as well as how to identify and correct a misaligned, damaged, or broken fuel cap to help prevent fuel spillage.

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