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Hazard Tree – Felling Hang-ups

 

hazard-tree-hang-ups. Photograph looking up into tree tops and seeing one tree leaning up against another.Felling a hung-up hazard tree is a particularly hazardous and complex task. Safely felling a hang-up requires extreme caution and expertise.

The following are some topics sawyers should review during tailgate safety discussions to address felling hang-up hazard trees:

Size up and Evaluation:

  • Cut/No Cut (walk-away). Is tree secure and does it need to come down?
  • What type of hang-up? In a fork, pinched between two trees, or resting on limbs?
  • Vertical hang-ups have increased complexities.
  • Condition of all relevant trees live, dead, rot, etc. Does the hang-up tree have any weak areas that could fail?
  • Obscured view of top?
  • If sawyer is unsure of the outcome, do not attempt to cut a leaner.

Operational Considerations:

  • Escape routes for unforeseen circumstances?
  • Consider falling trees as a group.
  • Consider face cuts versus slash cuts for directional control.
  • Rope technique allows increased distance from danger zones.

Alternative Mitigations:

  • Blasting.
  • Heavy equipment/cable.
  • No Work Zones.

Discuss any personal lessons learned with hang-up trees that you may have experienced.

 

Category
Felling Safety
References
Hazard Tree and Tree Felling Subcommittee


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NWCG Equipment Technology Committee Releases Safety Warning: 25-001 Non-specification fire shelters

Date: January 15, 2025
Contact: Equipment Technology Committee

The Equipment Technology Committee (ETC) has released Safety Warning: 25-001 Non-specification fire shelters. Non-specification fire shelters claiming to meet Forest Service (FS) fire shelter specification 5100-606 were first found in February of 2023. As of September 2024, non-specification shelters are again being advertised and sold on the open market.

This Safety Warning outlines details and recommended procedures to purchase FS specification shelters made with materials and components that meet performance criteria and toxicity testing requirements outlined in FS Specification 5100-606. 

For additional information on identifying non-specification shelters, please view ETC Safety Warning 23-01.

References:

ETC Safety Warning 25-001: Non-specification fire shelters

NWCG Equipment Technology Committee

ETC Safety Warning 23-01

Paul Gleason Lead by Example Awards

Date: January 14, 2025
Contact: Leadership Committee

The NWCG Leadership Committee has awarded the 2023 Paul Gleason “Lead By Example” awards to individuals in the categories of Initiative and Innovation, Mentoring and Teamwork, and Motivation and Vision, as well as a Lifetime Achievement Award.

Congratulations to the awardees:

  • Sam Bowen, Superintendent of the Mark Twain Veteran Crew with the U.S. Forest Service.
  • Greg Titus, Zone Fire Management Officer for the St. Marks National Wildlife Refuge with U.S. Fish and Wildlife Service.
  • Renae Crippen, Manager of the Blue Mountain Interagency Dispatch Center with the U.S. Forest Service.
  • Eric Carlson, Instructor with OMNA International.

References:

Paul Gleason Lead by Example Award

Wildland Fire Leadership Development Program

Interview with Paul Gleason

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