UL 80:2004 pdf download Steel Tanks for Oil-Burner Fuel
1 Scope
1.1 These requirements cover the design and construction of welded steel tanks of the atmospheric typewith a maximum capacitvy of 60 to 660 aallons 227 to 2500 L) intended for unenclosed installation insideof buildings or for outside aboveground applications as permitted by the Standard for lnstallation ofOi-Burning Equipment,ANSI/NFPA 31, primarily for the storage and supply of fuel oil for oil burners.
1.2 These tanks are intended for installation and use in accordance with the Standard for the lnstallationof Oi-Burning Equipment,ANSI/NFPA 31, and the Flammable and Combustible Liquids Code.ANSI/NFPA 30of the National Fire Protection Association.
2 Components
2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with therequirements for that component.
2.2 A component is not required to comply with a specific requirement that:
a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard,or
b) ls superseded by a requirement in this standard.
2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.
2.4 Specific components are incomplete in construction features or restricted in performance capabilitiesSuch components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.
3 Glossary
3.1 For the purposes of this Standard, the following definitions apply.
3.2 OBROUND – An oblong, round tank with straight sides as illustrated in Figure 10.2.
3.3 SECONDARY CONTAINMENT TANK – A double-walled atmospheric tank having an inner and anouter 360 degree wall with a space between the walls and a means for monitoring for leaks betweenthe tank walls,and capable of being pressurized.
4 Units of Measurement
4.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximateinformation.
5 References
5.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.
CONSTRUCTION
6 Size and Form
6.1 A tank of this class hall be cylindrical, obround, or of another form which has been demonstrated byest to possess strength and tightness as required by the Hydrostatic Pressure Test, Section 15.
6.2 A cylindrical tank shall have a maximum diameter of 48 inches (1.21 m) and a capacity not greaterthan 660 gallons (2500 L).
6.3 An obround tank shall be formed in accordance with Figure 10.2
6.4 Secondary containment tanks, when used,shall comply with the construction and performancerequirements in this standard and shall be provided with a means for monitoring for leaks between thetank walls.
7 Materials
7.1 A tank shall be constructed of commercial grade steel having a carbon content of 0.25 percent orless. The minimum thickness of steel employed in tanks of various capacities shall be shown in Table 7.1
Only new material shall be used.