3. Specifications-Bldg 154, Air Compressor Replacement.pdf

SPECIFICATIONS FOR NEW AIR COMPRESSOR PROJECT, BUILDING 154

Quality Assurance

Design, fabrication, installation, and testing of compressed air systems shall conform to ASME B31.1, ASME BPVC SEC VIII D1, and ASME BPVC SEC IX, except as specified otherwise. In ASME B31.1, ASME BPVC SEC VIII D1, and ASME BPVC SEC IX, the advisory provisions shall be considered mandatory, as though the word "shall" had been substituted for "should" wherever it appears; reference to the "authority having jurisdiction" and "owner" shall be interpreted to mean the Contracting Officer or the Contracting Officer’s Representative (COR).

Codes and Standards

Comply with the latest, applicable editions and sections of the publications of the following Agencies to the extent referenced in this Section:

1. ANSI - American National Standards Institute.

2. API - American Petroleum Institute.

3. ASME - American Society of Mechanical Engineers.

4. ASTM - American Society for Testing and Materials.

5. AWS - American Welding Society.

6. AWWA - American Water Works Association.

7. CISPI - Cast Iron Soil Pipe Institute Association.

8. FM - Factory Mutual.

9. NFPA - National Fire Protection Association.

10. PFI - Pipe Fabrication Institute.

11. UL - Underwriter's Laboratories, Inc.

LOW PRESSURE COMPRESSED AIR PIPING AND ACCESSORIES

Low pressure compressed air piping and accessories 125 psig at 150 degrees F, shall conform to the following:

Steel Piping

a. Pipe: ASTM A 53, seamless or electric resistance welded carbon steel, Schedule 40, black.

b. Fittings, size 2 inches and larger: ASME B16.9, carbon steel, butt welding, schedule 40, or ASME B46.1, carbon steel welding neck flanges, Class 150, ASME B46.1, flanged fittings, carbon steel, Class 150, gaskets 1/16-inch oil resistant synthetic rubber ASTM D 1330, bolts ASTM A 193/A 193M, Grade B7, and nuts, ASTM A 194/A 194M, Grade 7. Butt welded joints shall be full penetration consumable insert or backing ring type.

c. Fittings, size 1 1/2 inches and smaller: ASME B16.3, threaded malleable iron, Class 150, or ASME B16.11, forged carbon steel Class 3000 socket welding or Class 2000 threaded. Joints may also be butt welded or flanged, as specified for sizes 2 inches and larger.

d. Flat-faced steel flanges: Where connections are made to Class 125 cast iron flanges with steel flanges, use only flat-faced Class 150 steel flanges.

e. Unions: ASME B16.39, Class 1 (300 psig WOG).

Copper Tubing

a. Tubing: ASTM B 88, Type K or L, hard drawn, Class 1.

b. Fittings: ASME B16.22 wrought copper or bronze, with silver brazed joints.

c. Brazing filler metal: FS QQ-B-654, Class III.

d. Unions: bronze, FS WW-U-516, brazed joint type.

e. Flanges and flanged fittings: ANSI B16.24, bronze, Class 150, gaskets, oil resistant synthetic rubber, ASTM D 1330, bolts ASTM A 193/A 193M, Grade B7, and nuts ASTM A 194/A 194M, Grade 7.

f. Flared fittings: ASTM B 88, Type K or L, annealed, with ASME B16.26 or SAE J513 flared fittings.

Valves

Gate Valves

a. Bronze Gate Valves: MSS SP-80, Class 150, 2 inches and smaller, wedge disc, rising stem, inside screw type, with brazed joints ends when used with copper tubing.

b. Steel Gate Valves: MSS SP-84, 2 inches and smaller, ASME B16.34, over 2 inches, flanged ends, outside screw and yoke type with solid wedge or flexible wedge disc, Class 150.

Globe and Angle Valves

a. Bronze globe and angle valves: MSS SP-80, Class 150, 2 inches and smaller, Class 200, except that Class 150 valves with brazed ends may be used for copper tubing. Valves shall have renewable seats and discs except brazed-end valves which shall have integral seats.

b. Steel globe and angle valves: MSS SP-84, 2 inches and smaller, ASME B16.34, over 2 inches, flanged ends, Class

c. Ball Valves: 2 Inches and Smaller - Screwed: 275-pound WOG ball valve, bronze body and ball to ASTM B 62, replaceable Teflon seats and seals, screwed ends, lever operated with stops at full open and full closed positions.

Valve shall have blow-out proof stem design and shall be rated for dead-end service.

Hangers and Supports

Provide pipe hangers and supports conforming to MSS SP-58, MSS SP-69, and ASME B31.1, except as specified or indicated otherwise. Furnish zinc plated pipe hangers and supports except for copper plated inserts for copper piping. Provide tubing supports of U-shaped steel bolts and nuts firmly secured to adequately support structures such as walls, columns, floors, or brackets. Clips shall fit closely around piping but shall have sufficient clearance to permit longitudinal movement of piping during normal expansion and contraction. Provide supports at valves, fittings, branch lines, outlets, changes in direction, equipment, and accessories.

Dielectric Unions

Steel female pipe thread end and copper solder-joint ends, conforming to dimensional, strength and pressure requirements of ASME B16.39, Class 1. Steel parts shall be galvanized or plated. Union shall have a water-impervious insulation barrier capable of limiting galvanic current to one percent of the short-circuit current in a corresponding bimetallic joint. When dry, it shall also be able to withstand a 600-volt breakdown test.

General Application

Refer to the Contract Drawings and piping system specification sections for specific valve applications and arrangements.

a. Locate valves for easy access and provide separate support where necessary.

b. Install valves and unions for each fixture and item of equipment arranged to allow equipment removal without system shutdown. Unions are not required on flanged devices.

c. Install by-pass and drain valves per MSS SP-45 or as indicated on the Contract Drawings.

d. Install three-valve bypass around each control valve as indicated on the Contract Drawings.

PIPE SYSTEM IDENTIFICATION

General Provide pipe markers on every system including pipe contents service (such as supply and return) and flow direction. Locations of all markers shall be subject to final approval by the Government.

Location Locate pipe markers in a conspicuous manner at a minimum distance of every 40 feet as follows:

a. Upstream of each control valve and pressure regulating valve station.

b. Downstream of every pressure regulating valve station.

c. Near each branch.

d. On both sides of a wall, floor, ceiling, or roof within 4 feet of the barrier.

e. Near all origination and termination points of all equipment (tanks, pumps, etc.).

f. Near the inside and outside of concealed points.

g. Outdoors at each major elevation. Where pipes run parallel to each other, identify each pipe in the same general location.

VALVE SYSTEM IDENTIFICATION

Manual Valve Identification Tags

a. Provide an aluminum identification tag for every manual valve, no matter what size, including gate, globe, ball, check, plug, diaphragm, angle, butterfly, and stock which indicates the valve type identification.

b. Location: Attach tag to valve body or yoke, not the valve handwheel.

COLOR SCHEME

A proposed color scheme for painting is below. For all instances, where a color scheme already exists, use that color scheme.

Service Color

1. Potable Water Green

2. Non-potable Water Gold

3. Instrument/Compressed Air Silver

4. Industrial/Process Water Light Green

5. Drain, Waste, and Vent Light Brown

6. Steam Relief Vents Dark Brown

7. Chilled Water Blue

8. Condenser Water Orange

Colors shall be approved by the Government after a sample is shown next to some existing painted piping for each service.

Flexible Unicellular Pipe Insulation (Chilled Water Lines)

a. Pipe insulation shall be flexible unicellular sheet insulation (FUS) ASTM C 534, Type II Sheet Flexible foam elastomeric thermal insulation of expanded closed cell structure, for maximum continuous temperature of minus -

68 F to 217 F. Thermal conductivity shall be 157 BTU/HR FT F at 75 F. Insulation shall have a flame spread rating of 25 or less and a smoke developed rating of 100 or less when tested by ASTM E 84.

b. Insulation thickness shall be determined by most recently state of Iowa adopted International Energy Code Requirements for insulation for types of services.”

c. All fittings shall be insulated with the same insulation thickness as the adjacent piping. All seams and mitered joints shall be adhered with adhesive.

Glass Fiber Pipe Insulation (All others)

a. Pipe insulation shall be glass fiber. The insulation material shall consist of inorganic glass fibers, bonded with a thermosetting resin.

1. Utilize preformed pipe insulation as much as possible. Preformed pipe insulation shall be in compliance with ASTM C 547, Class 1, rigid insulation. Thermal conductivity, according to ASTM C 335, shall be a minimum of 0.24 BTU-in/hr-sq. Ft. deg. F at 100 deg. F mean temperature and below 0.29 BTU-in/hr-sq.ft deg. F at 200 deg. F mean temperature.

2. Insulation shall conform to ASTM C 795.

3. When tested in accordance with ASTM E 84 and NFPA 255 as plain insulation or on a composite basis (insulation, jacket, and adhesive), insulation shall not exceed 25 flame spread and 50 smoke developed.

4. Insulation shall be rated for continuous temperatures to 850 deg. F.

Piping Locations and Arrangements Drawings (plans, schematics, and diagrams) indicate the general location arrangement and restrictions of the piping systems. Location and arrangement of piping layout shall take into consideration pipe sizing and friction loss, expansion, pump sizing, and other design considerations. So far as practical, install piping as indicated on Contract Drawings, including the following guidelines:

a. Install piping free of sags or bends and with ample space between piping to permit proper insulation applications.

b. Install exposed piping at right angles or parallel to building walls and structure. Diagonal runs are not permitted.

c. Locate groups of pipes parallel to each other, spaced to permit applying full insulation, servicing of valves, and thermal expansion of piping systems.

d. Install drains at low points in mains, risers, and branch lines consisting of a tee, reducing tee, weld-o-let, or soc-o-let fitting, applicable 3/4 inch shut-off valve, 3/4-inch nipple, and cap for pipe sizes 6 inches and smaller; provide 2 inch shut off valve, nipple, and cap for pipe sizes 8 inches and larger.

e. Where possible install all piping to allow clear walkways and access to and around plant equipment. Maintain all code required clearances from doors, electrical equipment, etc.

Connections To Pumps, Tanks, and Equipment

a. The Contractor shall erect and support piping in manner that shall not put undue strain on pumps, tanks, or equipment.

b. The procedure for connection of piping to equipment shall be as follows:

1. After the equipment has been set and grouted, the Contractor shall run the pipe to the equipment without making any tight connections to flanges.

2. Flat faced flanges and full-face gaskets shall be used on piping connecting to equipment with flat faced flanges. Raised faces of standard flanges may be machined off flat to accomplish this. Bolting for these joints shall be per ASME B31.1 or ASME B31.3 per their respective scopes and as defined in this Section.

3. Flanges shall be checked by the Engineer to assure that no strain is placed on the equipment. If pipe is not in correct alignment, the Contractor shall remove piping and correct. The correction in alignment shall not be made while the pipe is connected to the equipment.

c. After alignment is found correct by the Engineer, the Contractor shall bolt up the flanges.

d. When required by the Engineer after the equipment has been in service, tested at operating temperatures, and with the lines and equipment still hot, the Contractor shall loosen flange connections to pumps, tanks, and equipment, and check for alignment, position, expansion, and strain applied to the equipment; make any adjustments necessary, and obtain approval of the Engineer before reconnecting.