SECTION 15008 DETAIL PIPING SPECIFICATION - MILL TYPE STEEL PIPE AND FITTINGS

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 15008

DETAIL PIPING SPECIFICATION - MILL TYPE STEEL PIPE AND FITTINGS


PART 1 GENERAL

1.1 SECTION INCLUDES

A. Mill type steel pipe and malleable iron fittings.

1.2 RELATED SECTION

A. Section 15000 - Plant Piping - General:

B. See referenced Section for additional requirements.

1.3 SUBMITTALS

A. As specified in Section 15000.

B. Welding procedures and qualifications.

C. Submit a list of the welders he proposes using and the type of welding for which each has been qualified.

D. Submit review procedure specifications and qualifications records of welding procedures for all pipe welding to be performed under this section, in accordance with Section IX, Article II of the ASME Boiler and Pressure Vessel Code.


PART 2 PRODUCTS

2.1 PIPE

A. General Pipe Requirements:
1. Piping 1½-inch and smaller:  ASTM A 106, Grade B.
2. Piping 2-inch and larger:  Carbon steel, black, seamless or electric resistance welded, ASTM A 53, Grade B.

B. Screwed, Butt-Welded, and Flanged Pipe:
1. 2-inch and Smaller:  Schedule 40.
2. 2-1/2-inch through 6-inch: Schedule 40.
3. 8-inch through 12-inch:  Schedule 20.
4. 14-inch through 24-inch:  Schedule 10.

C. Grooved End Pipe:
1. 2-1/2-inch through 6-inch: Schedule 40.
2. 8-inch through 14-inch:  Schedule 30.

2.2 JOINTS

A. Requirements for Specific Types of Joints:
1. 2-inch and Smaller:  Screwed.
2. 2½-inch to 14-inch: Grooved end conforming to AWWA C606, Butt-welded, or flanged, unless other- wise shown.
3. Larger than 14-inch:  Butt-welded or flanged unless otherwise shown.
4. Do not use grooved end joints for natural gas (G) or low pressure air piping (ALP).

B. Refer to the pipe schedule in the Drawings for specific joint type required for some services.

2.3 FITTINGS

A. 2-Inch and Smaller:
1. General requirements:  Screwed, 150-pound malleable iron, black, ASTM A197 or ASTM A47, dimensions conforming to ANSI B16.3.
2. Standard union requirements:  300-pound malleable iron, black, ASTM A197 or ASTM A47, dimensions conforming to ANSI B16.3, brass to iron seat.
3. Unions for natural gas: 3,000 pound, forged carbon steel, ASTM A105, steel seats.

B. 2½-Inch Through 14-Inch:
1. Grooved End: Malleable iron, ASTM A47, or ductile iron, ASTM A536, grooved or shouldered ends to accept mechanical couplings without field preparation, Victaulic, Gustin-Bacon, or equal.
2. Butt Welding Type:  Carbon steel, to match pipe wall thickness, ASTM A234, Grade WPB, conforming to ANSI B16.9 standards.

C. Larger than 14-inch:  Butt-welded carbon steel, to match pipe wall thickness, ASTM A 234, Grade WPB, conforming to ANSI B16.9 standards.

2.4 BRANCH CONNECTIONS

A. 2-Inch and Smaller:  Screwed tees as specified under FITTINGS, or 3000-pound WOG forged carbon steel, ASTM A105, Grade II commercial welding branch fittings with threaded outlet, as manufactured by Bonney Forge Division, Gulf and Western Industrial Products Company, Allentown, PA; Allied Piping Products Co., Inc., Norristown, PA; or equal.

B. 2½-Inch and Larger: Tees or reducing tees as specified under FITTINGS; to match pipe wall, cast steel, ASTM A216, Grade WCA, or 3000-pound WOG forged carbon steel, ASTM A105, Grade II commercial welding branch fittings with butt-welding outlet, as manufactured by Bonney Forge Division, Gulf and Western Industrial Products Company, Allentown, PA; Allied Piping Products Co., Inc., Norristown, PA; or equal; or fabricate from pipe. Use tee for branch outlet full size of run or one size reduced.

2.5 FLANGES

A. Forged steel, ASTM A 181 Grade I, slip-on or welding neck type, faced and drilled 150- pound, 1/16-inch raised face, ANSI B16.5 standard, or AWWA C207, Class D hub type, faced and drilled 125-pound flat-face, ANSI B16.1 standard.

B. Grooved End Pipe Adapter Flanges: Provide malleable iron, ASTM A47, conforming to Federal Specification QQ-I-666C, Grade II, or ductile iron, ASTM A536, Victaulic, Gustin-Bacon, or equal. When matching equipment with 250-lb or 300-lb RF flanges, use forged steel, ASTM A181, Grade I welding neck type, faced and drilled 300-lb, 1/16- inch raised face ANSI Standard.

C. Use welding neck flanges when abutting butt-weld fittings.  Match Welding neck bore pipe ID.

D. Machine off the raised face of a steel flange when mating with a cast iron flat faced flange.

2.6 COUPLINGS

A. Grooved end pipe couplings shall be malleable iron, ASTM A 47, conforming to Federal Specification QQ-I-666C, Grade II, or ductile iron, ASTM A 536, Victaulic Style 75, Gustin-Bacon, or equal.

B. Screwed pipe couplings shall be malleable iron, ASTM A 197 or ASTM A 47, dimensions conforming to ANSI B16.3. Couplings for use on natural gas, propane, nitrogen, fuel oil or lubricating grease shall be 3000-pound, forged carbon steel, ASTM A 105.

2.7 BOLTING

A. For Grooved End Joints:  Heat-treated carbon steel, ASTM A183 bolts and nuts, minimum tensile 110,000 psi.

B. 150-pound RF Flanges:  Carbon steel, ASTM A307, Grade A hex head bolts and ASTM A563, Grade A hex head nuts.

C. 125-pound FF AWWA Flanges:  Carbon steel, ASTM A307, Grade A hex head bolts and ASTM A563, Grade A hex head nuts.

D. When mating flange on equipment is cast iron and gasket is flat ring type, use ASTM A307, Grade B, square head bolts and heavy hex head nuts.

E. When 1/8-inch undersize bolting material is used for steel insulating flanges, use ASTM A193, Grade B7 alloy stud bolts and ASTM A194, Grade 2H carbon steel heavy hex nuts.

2.8 GASKETS

A. For Grooved End Joints:  EPDM or Chlorinated butyl with properties conforming to ASTM D 2000, dimensions to AWWA C606.

B. For Flanged Joints:
1. Unless otherwise specified; 1/16-inch thick asbestos composition flat ring type with 150-pound RF flanges; 1/16-inch thick full face type with 125-pound FF flanges; Cranite; Johns-Manville, No. 60; or equal.
2. Gaskets for digester and natural gas service shall be 1/8-inch thick neoprene rubber, durometer hardness No. 80, 1,500 psi minimum tensile strength, 125 percent minimum elongation, flat ring type with RF flanges and full face type with FF flanges, Garlock Style 7797, or equal.

2.9 THREAD LUBRICANT

A. Teflon tape.

2.10 COVERED WELDING ELECTRODES

A. AWS A5.1, E6010 for shielded metal-arc process.

2.11 WELDING ROD AND BAR ELECTRODES

A. As specified in PROCEDURE QUALIFICATIONS.

2.12 CONDUIT PIPING SYSTEM FOR BURIED HOT WATER SERVICE

A. Conduit Piping System:  Factory-fabricated and -assembled, airtight and watertight, drainable, pressure-tested piping with conduit, inner pipe supports, and insulated carrier piping.  Fabricate so insulation can be dried in place by forcing dry air through conduit.
1. Manufacturers:
a. Insul-Tek Piping Systems, Inc.
b. Perma-Pipe, Inc.
c. Rovanco Piping Systems, Inc.
d. Thermacor Process, L.P
e. Or equal.

B. Carrier Pipe:  Steel Pipe as specified above.

C. Carrier Pipe Insulation:
1. Polyurethane Foam Pipe Insulation:  Unfaced, preformed, rigid cellular polyurethane material intended for use as thermal insulation.
a. Comply with ASTM C 591, Type I or Type IV, except thermal conductivity (k-value) shall not exceed 0.19 Btu x in./h x sq. ft. x deg F at 75 deg F after 180 days of aging.
b. Flame-spread index shall be 25 or less and smoke-developed index shall be 50 or less for thickness up to 1-1/2 inches as tested by ASTM E 84.
c. Fabricate shapes according to ASTM C 450 and ASTM C 585.
d. Minimum insulation thickness: 1.5-inches

D. Conduit:  High impact, seamless PVC Class 12454-B conforming to ASTM 1784, Type 1, Grade 1.


PART 3 EXECUTION

3.1 WELDING

A. In accordance with latest editions of Section IX, ASME Boiler and Pressure Vessel Code and the American national Standard Code for Pressure Piping, ANSI B31.3.WELDING PERFORMANCE QUALIFICATION

B. Qualify all welders and welding operators at the Contractor's sole expense by a qualified testing laboratory before performing any welding under this section.

C. Qualification tests:  Perform qualification tests in accordance with Section IX, Article III of the ASME Boiler and Pressure Vessel Code.

D. Qualify welders and operators for making groove welds in carbon steel pipe in positions 6G for each welding process to be used.

E. Qualification tests may be waived if evidence of prior qualification is deemed suitable by the Engineer.

F. Retest any welders at any time Engineer considers the quality of the welder's work substandard.

3.2 FABRICATION

A. End Preparation:
1. Prepared Pipe edges preferably by machine shaping.
2. Oxygen or arc cutting are acceptable only if the cut is reasonably smooth and true and all slag is removed either by chipping or grinding.
3. Bevel ends for butt welding to conform to ANSI B16.25.

B. Cleaning:  Surfaces shall be clean and free of paint, oil, rust, scale, slag, or other material detrimental to welding.

C. Alignment and Spacing: Align ends to be joined within existing commercial tolerances on diameters, wall thicknesses, and out-of-roundness. Root opening of the joint shall be as stated in the procedure specification.

D. Procedure:
1. Field welding:  Use the shielded metal-arc process.
2. Shop fabrication:  Fabricate in accordance with the submitted welding procedure qualifications.
3. Perform no welding if there is impingement of any rain, snow, sleet, or high wind on the weld area or if the ambient temperature is below 32° F.
4. If the ambient temperature is less than 32° F preheat the work to a temperature that is warm to the touch of a hand.

5. Tack welds:
a. Perform tack welds by a qualified welder using the same procedure as for the completed weld.
b. Completely removed tack welds that have cracked or do not match the requirements of the completed weld.
c. Make tack welds that are not to be removed with an electrode that is the same as or equivalent to the electrode to be used for the first weld pass.
6. Thoroughly clean each layer of deposited weld metal before the deposition of each additional layer of weld metal, including the final pass, with a power-driven wire brush.
7. Chip or grind out surface defects that will affect the soundness of weld.
8. On pipe sizes 6-inch through 24-inch, make a minimum of three weld passes using the specified covered electrode.
9. On all welded pipe 4-inch and under, make a minimum of a full root and second pass weld.
10. Finished welds: Free of cracks, incomplete penetration, weld undercutting, excessive weld reinforcement, porosity, slag inclusions, and other defects in excess of the limits prescribed in Chapter V of ANSI B31.3.
11. Branch connections:  Fit and groove-welded in accordance with the details described and shown in Chapter V of ANSI B31.3.

3.3 TESTING

A. Hydrostatically or pneumatically test all lines at the pressures listed in the Piping Schedule.

B. Follow procedures as specified in Section 15000.

3.4 SUPPORTS AND HANGERS

A. As specified in Section 15000.

3.5 CORROSION PROTECTION

A. As specified in Section 15000.

3.6 GENERAL INSTALLATION OF EXPOSED PIPING

A. As specified in Section 15000.

3.7 INSTALLATION OF BURIED CONDUIT PIPING

A. As specified by pipe system manufacturer.

B. Provide insulated and jacketed fittings.

C. Provide watertight mastic end seal at jacket and pipe surfaces at pipe ends and field cuts.

D. Insulate and seal all joints after welding and testing carrier pipe.

E. Provide pipe anchors per pipe system manufacturer’s recommendations.

F. Conform to trenching and backfill specifications in Section 15000 and Division 2. END OF SECTION