Tunneling and Hyperbaric Safety

People in reflective vests and hard hats inspect a tunnel boring machineIn Washington State, several tunneling projects are at various stages of completion. As these projects continue and new projects begin, it's important to focus on the safety and health of workers who do this potentially dangerous work.

Each tunnel presents new engineering challenges, and the field is incredibly complex. L&I is committed to partnering with employers completing these projects and sharing information to keep workers safe and healthy.

Rules and policies

The Division of Occupational Safety and Health (DOSH) initiates rulemaking on the compressed air work requirements and the underground construction work requirements that are currently located in Chapter 296-36 WAC, Safety Standards — Compressed Air Work and Chapter 296-155 WAC, Part Q, Underground Construction (396 KB PDF).

DOSH began the rulemaking process on September 18, 2012. Our intent is to work with stakeholders to develop the proposed rule language.

Resources and tools

Stakeholder meetings

L&I formed a Tunneling and Hyperbaric Safety Work Group — a forum for labor, business, and for L&I to collaboratively work together to update these standards.

The goal of this work group is develop a draft set of safety and health rules to present to DOSH for adoption into the Washington Administrative Code.

Meeting dates

  • Next meeting TBD.

Get updates via email

An email list has been set up for L&I to share information about this workgroup and the meetings. Select the "Tunnelling and Hyperbaric Safety Work Group" topic when you sign up to receive email updates.

If you have any questions, please contact Cindy Ireland, 360-902-5522, or Alan Lundeen, 360-902-4758.

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