National wood chip heating fuel standard open for comment

By Innovative Natural Resource Solutions LLC | October 09, 2017

A revised draft of the proposed national wood chip heating fuel technical quality standard for the U.S. is now open for stakeholder feedback and comment.   

The standard development project is coordinated by the Biomass Energy Resource Center, the American Society of Agricultural and Biological Engineers, the Biomass Thermal Energy Council, and Innovative Natural Resource Solutions LLC.  Funding for the project has been provided by the USDA Forest Service.

What is a national wood chip heating fuel technical quality standard?  Simply put, all heating fuels used in this country—except wood chips—are governed by quality standards that ensure these fuels meet clearly defined parameters.  This includes heating oil, propane, natural gas, coal, wood pellets, etc. 

Heating appliances (boilers, furnaces, stoves) are then engineered around a known standard fuel to ensure efficient, clean and safe performance.  Without a standard, no manufacturer of wood chip combustion systems can guarantee consistent, high performance. 

A project advisory committee has proposed making revisions to the existing international standard ISO 17225-4. In January 2017, this committee made the decision to modify and adopt this existing international standard rather than develop an entirely new standard for the U.S. market.

A draft of the standard was circulated for stakeholder comment in July 2017 and for first ballot voting by the advisory committee under procedures of the American National Standards Institute.  As a result of stakeholder feedback, some additional clarifying revisions have been made to the draft standard. 

The newly revised standard is now going through a second ballot with the voting body, and is also open again for stakeholder comment through Dec. 4.  All comments and feedback is limited to recent proposed changes.  No other comments will be accepted, as prior amendments have already been subject to stakeholder comment and approved by the voting body.

If you are interested in reviewing the standard, please send an email to Jean Walsh at ASABE, indicating you would like to review and comment on the newly revised draft standard. Walsh will respond with the draft and instructions on how to respond. 

For further information, please visit the project website at