OAR 918-225-0380
Exemptions for Refrigeration Chillers

(1)

Waterside vessels of refrigeration chillers are exempt under ORS 480.510 (Short title) to 480.665 if:

(a)

The design pressure does not exceed 300 pounds per square inch gauge, the temperature does not exceed 210°F., and the system includes an ASME-approved relieving device set at a maximum working pressure of 300 pounds per square inch gauge at 210°F;

(b)

The refrigerant side is built in accordance with the minimum safety standards and equipped with an ASME-approved relieving device set at or below the maximum working pressure and temperature as specified on the nameplate for the vessel; and

(c)

All installations of refrigeration chillers comply with ORS 480.630 (Licensing of boiler contractors and persons installing, altering or repairing boilers or pressure vessels).

(2)

Systems connected to an outside heat energy source shall not be exempt from ORS 480.510 (Short title) to 480.665.

(3)

If any of the limitations in section (1) of this rule are exceeded, the chiller must comply with the minimum safety standards.

(4)

This exemption does not apply to systems using ammonia as a refrigerant.
[Publications: Publications referenced are available from the agency.]

Source: Rule 918-225-0380 — Exemptions for Refrigeration Chillers, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=918-225-0380 (accessed May 26, 2025).

918–225–0240
Definitions 918–225–0300
Exemptions for Fired Water Heaters 918–225–0310
Exemptions for Refrigerant Piping Systems 918–225–0315
Exemptions for Process Piping Systems 918–225–0320
Exemptions for Refrigerant or Air Conditioning Pressure Vessels 918–225–0330
Exemptions for Unfired Pressure Vessels With an Inside Diameter of Six Inches and Less 918–225–0340
Exemptions for Pressure Containing Parts of Piping Components 918–225–0350
Exemptions for Hot Water Storage Tanks 918–225–0360
Exemptions for Certain Pressure Vessels 918–225–0365
Exemptions for Certain Miniature Boilers 918–225–0370
Exemptions for Coil-Type Water Boilers 918–225–0380
Exemptions for Refrigeration Chillers 918–225–0430
Adopted Oregon Boiler and Pressure Vessel Specialty Code 918–225–0435
Amendments to the Oregon Boiler and Pressure Vessel Specialty Code 918–225–0445
Other Installation Standards 918–225–0450
Manufacturer’s Data Reports 918–225–0460
Reporting of Accidents and Conditions of Use 918–225–0465
Boiler Room Usage 918–225–0470
Boiler Operation 918–225–0510
Installation of Buried Vessels 918–225–0540
Scope of Special Inspector’s Authority 918–225–0560
Responsibility of Inspectors 918–225–0562
Process Piping Inspector Responsibilities 918–225–0565
Reporting of Immediate Hazards to Health or Safety 918–225–0570
Boiler and Pressure Vessel Inspection Schedules 918–225–0590
Inspection Cycle Extension Program 918–225–0600
Permits 918–225–0606
Issuance and Purchase of Minor Repair Permits 918–225–0609
Use of Minor Repair Permits 918–225–0612
Scope of Work Allowed under Minor Repair Permit 918–225–0615
Inspection of Minor Repair Permits 918–225–0618
Misuse of Minor Repair Permits 918–225–0620
Bulk Rate Permits 918–225–0630
Special Fee for Dryer Permits 918–225–0640
Business and Trade License Fees 918–225–0650
Practical Experience Requirement 918–225–0660
Certification of Special Inspectors 918–225–0665
Certification of Process Piping Inspectors 918–225–0670
Fees for Inspector Examination, Certification and Renewal 918–225–0691
Boiler, Pressure Vessel and Pressure Piping Installation, Alteration or Repair Licensing Requirements 918–225–0700
Responsibility of Boiler Contractors 918–225–0720
Welding Requirements for Owner-Users 918–225–0730
Requirements for Businesses Doing Welding or Brazing 918–225–0740
Quality Control System for Pressure Piping 918–225–0745
Contractor Registration 918–225–0780
Filing of Insurance Notices

May 26, 2025

Rule 918-225-0380's source at or​.us