Laws, Rules and Regulations - The National Board of Boiler and ...

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c. Nominal water-containing capacity of 120 gallons; or
d. Pressure of 160 psi.
3. Portable unfired pressure vessels subject to regular inspection by State of Washington inspectors, and Interstate
Commerce Commission/US Department of Transportation containers.
4. Containers for liquefied petroleum gases regulated by Seattle Fire Code.
5. Unfired pressure vessels in occupancy groups B, F, H, M, R, S, and U having a volume of 5 cubic feet or less operated at
pressures not exceeding 250 psi.
6. Unfired pressure vessels of any size (other than those containing steam) protected by approved pressure relief devices
set to operate at a pressure not exceeding 15 psi.
7. Electric boilers:
a. Having a volume not exceeding 1-1/2 cubic feet;
b. Having a maximum allowable working pressure of 100 psi;
c. Constructed (after June 10, 1994) to the ASME Boiler and Pressure Vessel Code, or listed or otherwise certified by a
nationally recognized testing agency or recognized foreign testing laboratory.
8. Water storage tanks with no air cushion and no energy or heat source.
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING.
InSpeCtIOnS reQUIreD
1. All newly installed boilers, pressure vessels, and burners shall be inspected by a department inspector before being put
into service.
2. All boilers, except boilers and pressure vessels in residences and in apartments of fewer than six dwelling units, shall
have:
a. An annual external inspection;
b. An annual internal inspection where construction and operating conditions permit.
3. Unfired pressure vessels shall have an inspection every two years (internal inspections are required at inspector’s
discretion, where construction permits, or where specifically required by code). Ultrasonic thickness examination may
substitute for internal inspection of unfired pressure vessels.
Installation permits are required.
InSUranCe InSpeCtIOn reQUIrementS
Inspections made by inspectors employed by insurance companies and holding a National Board Commission can be accepted in
lieu of inspections made by a department inspector.
1. Reports of inspection must be filed within 30 days with the department on forms or in format approved by agency.
2. The department must be notified of suspension of insurance on account of dangerous conditions.
3. The department must be notified of new business and discontinuance of insurance.
4. The department must be notified of repairs and/or alterations.
5. The department must be notified of accidents.
CertIFICate OF InSpeCtIOn
Certificate of Inspection is issued by the department. For insured objects, the Certificate of Inspection fee shall be 50% of the city
inspection fee (but in no case less than the minimum fee).
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations