Boilers, Pressure Vessels

The Electronic Safety and Licensing Application (eSLA) is now live for Boilers and Pressure Vessels. Customers must use eSLA to submit plan reviews/permits, as well as search the Public Lookup for this program area.

Visit to get started, or go to the Customer Information​ page for instructions on first-time login.

Safety requirements are​ enforced by Industry Services Division staff for power boilers, heating boilers, pressure vessels, and nuclear power plant components. Shop and field consultation and inspections are provided. Boiler repairers are registered and boiler inspectors are certified.

Questions regarding the Boilers and Pressure Vessels code can be sent to

To report a Boiler or Pressure Vessel accident during regular business hours please call (262) 224-6285.  After hours, weekends or holidays, please call Wisconsin Emergency Management after-hours incident reporting at 1(800) 943-0003 ext. 2 for assistance.​




Application for the National Board Boiler Inspector Commission/Endorsement Examination (R02/2013)
SBD-4341​Inspection Report and Orders (Continued) (R11/2011)
​Boiler Regulated Object Inspection Report (R02/2013)
SBD-10663-E​UPV Unfired Pressure Vessel Regulated Object Inspection Report (R02/2013)
SBD-10892​Pressure Vessel for Human Occupancy Inspection Checklist (R02/2013)
​SBD-10893​Historical / Hobby Boiler Inservice Inspection Requirements Checklist (R02/2013)
SBD-10894​Historical / Hobby Boiler Internal and Hydro Checklist (R02/2013)
SBD-10896​Solid Fuel-Fired Burning Water-Heating Appliance Checklist (R04/2013)
Hydronic Boiler Checklist​Hydronic Heating Boiler Checklist (R02/2013)
​Steam Boiler Checklist​Steam Heating Boiler Checklist (R04/2013)
Unfired Vessel Checklist​Unfired Pressure Vessel Checklist (R04/2013)
Power Boiler Checklist​ASME-Section 1 Power Boiler Checklist (R01/2017)
ASME B31 Piping Checklist
ASME B31 Piping Checklist
​Power Piping Checklist ASME B31 (PDF)

Power Piping Checklist ASME B31 (fill-in)
SBD-9890X​Application for Review, Petition for Variance



Guideline to Power Piping
Guideline to Power Piping in State of WI SPS 341
​Power Piping/Welded Refrigeration Piping Installation Registration (R03/2017) (PDF)
Power Piping/Welded Refrigeration Piping Installation Registration (R03/2017) (fill-in)
Boiler and Unfired Pressure Vessel Registration (R06/2019)​ (PDF)
Boiler and Unfired Pressure Vessel Registration (R06/2019) (fill-in)
​SBD-10787-E​Boiler and Pressure Vessel Accident Report (R10/2015) 
NB 405​National Board Initial Boiler Certification Report Form C1, NB405
​Test Log​Safety Valve Test Log 


Industry Days 2018
Industry Days 2018
Reminders for Boiler and Pressure Vessel Inspectors
Boiler Pressure Vessel​Brochure describing Industry Services Boiler and Pressure Vessel Program
SBD-10879​Brochure describing Industry Services Solid Fuel-Fired Water Heating Appliance
Historical Hobby Boilers​Brochure describing Industry Services Historical/Hobby Boiler Program
Memo SBD-10903​Boiler Temperature Limit Controls Memo
​Guidlines-Backflow Protection​Guidelines for Backflow Protection of Steam and Hot Water Boilers
Contractor Memo​HVAC Equipment Replacement Information
Damarc Inspection Memo​Damarc Quality Inspection Service Memo about the Safety and Buildings Division boiler, pressure vessel, and mechanical refrigeration inspection systems having Damarc as an agent 
Relief Valve Install​Steam Safety and Hot Water Relief Valve Installation Requirements for Boilers
Conversion Tables​Cylindrical Tank Conversion Tables
Power Piping Directive​Power Piping Inspection Directive
Credentialing Requirements​Credentialing Requirements Boiler Industry Days 2016
​Gas SystemsGas Systems Boiler Industry Days 2016 
Power Piping​Power Piping Boiler Industry Days 2016
​Rulemaking Process​Rulemaking Process Boiler Industry Days 2016
Dual-Use Water Heater​Summary of Rules for Water Heaters Used for Space Heating


Permit & Invoice Questions

Please email to update the owner and/or address, to request a replacement permit to operate, or to answer a general invoice inquiry question.