GUIDE SPECIFICATION SECTION 231113-5
Revised 16 February 2016 Fuel Oil Piping
SECTION 231113 –FUEL OIL PIPING
PART 1 - GENERAL
RELATED DOCUMENTS
Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
SUBMITTALS
General: Submittals shall demonstrate compliance with technical requirements by reference to each subsection of this specification. Where a submitted item does not comply fully with each and every requirement of the Specifications, the submittal shall clearly indicate such deviations. Identification requirements for non-complying features of items are very specific. See Section 230210 for exact requirements.
Manufacturer's Data: Submit manufacturer's technical product data for the following products:
Special duty valves
Oil transfer pumps--include performance curves, electrical characteristics, and specified accessories
Oil piping specialties
QUALITY ASSURANCE
Comply with provisions of NFPA 31, Standard for the Installation of Oil Burning Equipment, for oil piping materials and components, oil piping installations, and inspection, and testing of fuel oil piping systems.
Testing Laboratory and UL Compliance: Provide fuel oil piping components and storage tanks that are Listed and Labeled and comply with the following UL standards:
UL 343, Standard for Pumps for Oil-Burning Appliances for oil transfer pumps
UL 80, Standard for Steel Inside Tanks for Oil-Burner Fuel
UL 443, Steel Auxiliary Tanks for Oil-Burner Fuel for steel auxiliary oil tanks
UL 567, Pipe Connections for Flammable and Combustible Liquids and LP-Gas for pipe connectors for fuel oil piping systems
PART 2 - PRODUCTS
PIPE AND TUBE MATERIALS
Piping Materials: Provide pipe and tube of type, joint type, grade, size and weight (wall thickness or Class) indicated for each service. Where type, grade or class is not indicated, provide proper selection as determined by Installer for installation requirements, and comply with governing regulations and industry standards.
Pipe/Tube Fittings: Provide factoryfabricated fittings of type, materials, grade, class and pressure rating indicated for each service and pipe size. Provide sizes and types matching pipe, tube, valve or equipment connection in each case. Where not otherwise indicated, comply with governing regulations and industry standards for selections, and with pipe manufacturer's recommendations where applicable.
STEEL PIPES AND PIPE FITTINGS
Carbon Steel Pipe: Black, Schedule 40, with beveled ends, ASTM A53, Type E, Grade B for piping 4” and larger or ASTM A53, Type S, Grade B for piping 3” and smaller; except Grade A shall be required where close coiling or bending is required.
CastIron Threaded Fittings: ANSI B16.4
MalleableIron Threaded Fittings: ANSI B16.3, plain or galvanized as indicated.
MalleableIron Threaded Unions: ANSI B16.39, screwed, ANSI B1.20.1, Class 150 hexagonal stock with metal-to-metal bronze seats, plain or galvanized as indicated.
Threaded Pipe Plugs: ANSI B16.14
Unions: ANSI B16.39, Class 150, malleable iron, female pattern, brass to iron seat, ground joint. Threads shall conform to ANSI B1.20.1.
Steel Flanges: Forged carbon steel, ASTM A105, slip-on type, 150 lb rating, ANSI B16.9 raised face with 1/16” thick, non-asbestos ring type gasket, PTFE filled. Bolting shall be heavy hex head machine bolts or cap screws, ASTM A193-B7 steel allow, with full nuts, ASTM A194- Gr. 2H steel alloy.
Carbon Steel Buttwelding Fittings: ASTM A234 Gr. WPB, seamless or welded, ANSI B16.9, except ANSI B16.28 for shortradius elbows and returns, rated to match connected pipe.
Forged Steel Socket Weld Fittings: ASME B16.11, Class 2000.
Pipe Nipples: Fabricated from same pipe as used for connected pipe, except do not use less than Schedule 80 pipe where length remaining unthreaded is less than 11/2", and where pipe size is less than 11/2", and do not thread nipples full length (e.g., no closenipples).
COPPER TUBE AND FITTINGS
Copper Tube: Type L, drawn temper copper tubing above grade and Type K, annealed copper tubing below grade, ASTM B 88, Type (wall thickness) as specified for each service, harddrawn temper, except as otherwise indicated.
Copper SolderJoint Fittings: Cast copper per ANSI B16.18 or wrought copper per ANSI B16.22, with “type” to match adjacent piping.
Brass Pipe Flanges: ANSI B16.1, cast brass, with heavy head machine bolts or cap screws, ASTM A193-B7 steel alloy, with hex full nuts, Type 304 stainless steel per ASTM A194-Gr. 2H. Gasket shall be 1/8” natural rubber, 35-45 Durometer hardness.
CopperTube Unions: Provide standard products recommended by manufacturer for use in service indicated.
MISCELLANEOUS PIPING MATERIALS/PRODUCTS
Welding Materials: Except as otherwise indicated, provide welding materials to comply with Section II, Part C, ASME Boiler and Pressure Vessel Code for welding materials.
Soldering Materials: Except as otherwise indicated, provide soldering materials as follows:
TinAntimony Solder: ASTM B 32, Grade 95TA
SilverLead Solder: ASTM B 32, Grade 96TS
FITTINGS
Malleable-Iron Threaded Fittings: Class 150, standard pattern, for threaded joints
Steel Fittings: Wrought steel, seamless or welded, for welded joints
Wrought-Copper Fittings: Streamlined pattern
Cast-Iron Threaded Flanges: Class 125, raised ground face, bolt holes spot faced
Steel Flanges and Flanged Fittings: Including bolts, nuts, and gaskets of the following material group, end connection and facing:
Material Group: 1.1
End Connections: Butt Welding
Facings: Raised face
JOINING MATERIALS
Brazing Filler Metals: AWS A5.8, Classification BAgl (silver)
Gaskets for Flanged Joints: Gasket material shall be full-faced for cast-iron flanges and raised-face for steel flanges. Select materials to suit the service of the piping system in which installed and which conform to their respective ANSI Standard (A21.11, B16.20, or B16.21). Provide materials that will not be detrimentally effected by the chemical and thermal conditions of the fluid being carried.
SPECIAL DUTY VALVES
Oil Safety Valves: 250 psig maximum working pressure, 550 deg F maximum operation temperature; ASTM B 61 bronze body and bronze bases and discs, and field adjustable cadmium-plated carbon steel springs factory-set at 20 percent above operating pressure. End connections shall be inside threaded with threads conforming to ANSI B1.20.1. Valve shall be Listed for flammable or volatile liquids.
Vertical Ball Check Valves: Class 200, 400 psig maximum operating pressure, 2-piece bronze construction with threaded end connections; integral bronze seats and replaceable stainless steel ball.
FUEL OIL TRANSFER PUMPS AND ACCESSORIES
Single-stage, positive displacement rotary type, with the following features and accessories: foot-mounted, cast-iron housing, steel gears, bronze bearings, steel shaft, standard mechanical seals, built-in pressure relief bypass, steel base, and drive coupling. Provide pumps with capacities and electrical characteristics as scheduled for. Pumps shall be constructed in accordance with UL 343, and be Listed and Labeled. Pump shall be direct drive or V-belt drive as indicated on the Drawings.
PART 3 - EXECUTION
PIPE APPLICATIONS
Use steel pipe and fittings above grade with threaded joints for piping 3/4"-2 inch and with welded joints for 2-1/2 inch and larger.
Use Type L, drawn copper tubing with wrought copper fittings and brazed joints for 1/2" and smaller, above ground, within building. Use Type K, annealed temper copper tubing for 2 inch and smaller without joints, for underground installations.
PIPING INSTALLATION
Install supply, return, fill, and vent piping at a uniform grade of 1/4 inch in ten feet downward in the direction of the storage tank.
Make changes in directions and branch connections using fittings.
Make reductions in pipe sizes using eccentric reducer fitting install with the level side down.
Install unions in pipes 2 inch and smaller adjacent to each valve, at final connections each piece of equipment, and elsewhere as indicated. Unions are not required on flanged devices. Install dielectric unions where piping of dissimilar metals are joined. Install flanges on valves, apparatus, and equipment having 2-1/2 inch and larger connections.
Install flexible connectors at inlet and discharge connections to pumps and other vibration producing equipment.
Install strainers on the supply side of each control valve, pressure regulating valve, oil burner connection, and elsewhere as indicated. Install 3/4 inch NPS nipple and ball valve in blow down connection of strainers 2 inch and larger. Use same size nipple and valve as blow-off connection of strainer.
VALVES INSTALLATION
Install valves in accessible locations, protected from physical damage. Tag valves with a metal tag attached with a metal chain indicating the piping systems supplied.
Install shut-off duty valves at low points in mains, risers, branch lines, and elsewhere as required for system drainage.
Install swing check valves as required to control flow direction.
TERMINAL EQUIPMENT CONNECTIONS
Install dirt leg consisting of a tee fitting with the bottom outlet plugged or capped as close to the inlet of the oil burning appliance as practical. Drip leg shall be a minimum of 3 pipe diameters in length.
FIELD QUALITY CONTROL
Test oil piping in accordance with NFPA 31, as follows:
Test hydrostatically to 150 percent or pneumatically to 110 percent of maximum anticipated system pressure, but not less than 5 psig, for at least 30 minutes while all joints and connections are inspected for leaks.
Suction lines may be tested under vacuum of not less than 20 in. Hg for at least 30 minutes.
Vent lines with a potential liquid static head of 10 psig shall be tested hydrostatically at a pressure equal to the potential static head.
The test shall not impose a pressure on the oil storage tank(s) exceeding 5 psig.
Remake leaking joints and connections using new materials.
Test and adjust controls and safeties. Replace damaged or malfunctioning controls and equipment.
Submit inspection and test reports for review by A/E and provide written certification of satisfactory testing.
OWNER INSTRUCTION AND TRAINING
Provide Owner instruction and training in accordance with Section 230240.