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

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b. Pressure vessels used for transportation of compressed gases (if constructed in accordance with the US Department
of Transportation or Oklahoma Corporation Commission), or containers for liquified petroleum gases (subject
to the US Department of Transportation or Oklahoma Liquified Petroleum Gas Administration);
c. Pressure vessels containing air located on vehicles operating pursuant to regulations of other jurisdictional
authorities;
d. Boilers and pressure vessels located on railroad locomotives;
e. Pressure vessels on remote sites limited to oil- and natural gas-gathering facilities, processing plants or gas-producing
lease locations;
f. Pressure vessels in the care, custody, and control of research facilities used solely for research purposes;
g. Pressure vessels on oil and gas lease locations.
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING, and hot-water supply heaters located in facilities or
installations owned or operated by the State of Oklahoma, or its agencies, counties, municipalities, or school districts, except the
following:
1. Pressure vessels not exceeding 15 cubic feet in volume and 250 psig.
2. Low-pressure steam boilers, hot-water heating boilers, hot-water supply boilers, hot-water supply heaters, or pressure
vessels located in private residences or in apartment houses of fewer than six family units.
3. Pressure vessels operated full of water or other liquid (not materially more hazardous than water), provided the vessel
contents do not exceed a temperature of 150°F or a pressure of 200 psig.
InSpeCtIOnS reQUIreD
Item Internal External
Power boilers and high-temperature, high-pressure boilers 1 Year 1 Year*
Low-pressure steam and vapor heating boilers 2 Years 1 Year
Hot-water heating and hot-water supply boilers ** 1 Year
Hot-water supply heaters *** 2 Years
Pressure vessels, excluding those within the scope of
API Inspection Code, subject to internal corrosion, and
waste heat steam generators
3 Years 3 Years
Pressure vessels not subject to internal corrosion 10 Years 3 Years
*Under pressure.
**At the discretion of the inspector.
***Only those located in public facilities.
Vessels within the scope of the API Inspection Code shall be inspected as prescribed therein.
Downstream welded steam piping exceeding 15 psi requires inspection.
InSUranCe InSpeCtIOn reQUIrementS
1. Inspections made by insurance company inspectors may be accepted in lieu of inspections made by a department inspector,
provided a photostatic copy of the inspector’s National Board Certificate is furnished to the department and the
inspector is authorized by the commissioner of labor.
2. Exact copies of inspector’s field reports must be filed with the department within 30 days.
3. The department must be notified immediately regarding the suspension of insurance on account of dangerous conditions.
4. The department must be notified of new business and discontinuance of insurance within 30 days.
CertIFICate OF InSpeCtIOn
Certificate of Inspection is valid for 12 months for boilers and 36 months for pressure vessels and issued by the commissioner
upon payment of a $25.00, $50.00 or $75.00 fee. Fee shall be paid directly to the department of labor.
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations