Attachment 17 Boiler Plant Piping System Specification section 23 2 111.docx

02-01-20

SECTION 23 21 11

BOILER PLANT PIPING SYSTEMS

SPEC WRITER NOTES:

GENERAL

DESCRIPTION

All boiler plant piping systems, except plumbing and sanitary, including piping supports. Piping located outside of the boiler plant building is not included except for gas regulator and meter stations.

A complete listing of common acronyms and abbreviations are included in Section 23 05 10, COMMON WORK RESULTS FOR BOILER PLANT AND STEAM GENERATION.

RELATED WORK

Section 01 00 00, GENERAL REQUIREMENTS.

Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS.

//Section 01 91 00, GENERAL COMMISSIONING REQUIREMENTS.// Section 09 91 00, PAINTING.

//Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS.// Section 22 11 00 FACILITY WATER DISTRIBUTION.

Section 22 31 11, WATER SOFTENERS.

Section 22 67 19.16, REVERSE OSMOSIS WATER EQUIPMENT.

Section 23 05 10, COMMON WORK RESULTS FOR BOILER PLANT AND STEAM GENERATION.

Section 23 05 51, NOISE AND VIBRATION CONTROL FOR BOILER PLANT.

Section 23 05 93, TESTING, ADJUSTING, AND BALANCING FOR HVAC.

Section 23 07 11, HVAC AND BOILER PLANT INSULATION.

//Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.// //Section 23 08 11, DEMONSTRATIONS AND TESTS FOR BOILER PLANT.// Section 23 09 11, INSTRUMENTATION AND CONTROL FOR BOILER PLANT.

Section 23 25 00, HVAC WATER TREATMENT.

Section 23 50 11, BOILER PLANT MECHANICAL EQUIPMENT.

Section 23 52 33, WATER-TUBE BOILERS.

Section 23 52 39, FIRE-TUBE BOILERS.

APPLICABLE PUBLICATIONS

SPEC WRITER NOTE:

1.Make material requirements agree with requirements specified in the referenced Applicable Publications. Verify and update the publication list to that which applies to the project, unless the reference applies to all mechanical systems. Publications that apply to all mechanical systems may not be specifically referenced in the body of the specification, but, shall form a part of this specification.

2. Insert the year of approved latest edition of the publications between the brackets and delete the bracket //// if applicable to this project.

The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. Where conflicts occur these specifications and the VHA standard will govern.

American Society of Civil Engineers (ASCE):

25-//2006// Earthquake-Actuated Automatic Gas Shutoff Devices American Society of Mechanical Engineers (ASME):

ASME Boiler and Pressure Vessel Code (BPVC):

BPVC Section I-//2019// Rules for Construction of Power Boilers BPVC Section VIII-//2019// Rules for Construction of Pressure Vessels BPVC Section IX-//2019// Welding, Brazing, and Fusing Qualifications ASTM International (ASTM):

American Welding Society (AWS):

California Referenced Standards Codes (CRSC):

Title 24 Part 12-//2016// Manufacturers Standardization Society of the Valve and Fittings Industry (MSS):

National Fire Protection Association (NFPA):

Pipe Fabrication Institute (PFI):

ES24-//2016// Pipe Bending Methods, Tolerances, Process and Material Requirements Department of Veterans Affairs (DVA):

H-18-8-//2016// Seismic Design Handbook

SUBMITTALS

Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Information and material submitted under this section shall be marked “SUBMITTED UNDER SECTION 23 21 11, BOILER PLANT PIPING SYSTEMS”, with applicable paragraph identification.

Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

Piping:

ASTM material specification number.

Grade, class or type, schedule number.

Manufacturer.

Intended service.

Pipe Fittings, Unions, Flanges:

ASTM material specification number.

ASME standards number.

Catalog cuts.

Pressure and temperature ratings.

Intended service.

Valves - Gate, Globe, Check, Plug, Butterfly, Ball:

Catalog cuts showing design and construction.

Pressure and temperature ratings.

Materials of construction.

Accessories.

Intended service.

Sight Flow Indicators:

Catalog cuts showing design and construction.

Pressure and temperature ratings.

Materials of construction.

Intended service.

Quick - Couple Hose Connectors and Steam Hose:

Catalog cuts showing design and construction.

Pressure and temperature ratings.

Materials of construction.

Type of seal between couplings.

Flexibility of steam hose.

Pressure Reducing and Regulating Valves, Back Pressure Relief Valves, Safety Valves, Relief Valves:

Catalog cuts showing design and construction.

Service limitations (type of fluid, maximum pressure and temperatures).

Materials of construction.

Flow capacity at required set pressure or differential pressure.

Predicted sound levels, at operating condition, for steam pressure reducing valves.

Strainers:

Catalog cuts showing design and construction.

Pressure and temperature ratings.

Materials of construction.

Strainer basket or liner mesh size.

Pressure loss and flow rate data.

Intended service.

Emergency Gas Safety Shutoff Valves// and Automatic Earthquake Gas Valves//:

Catalog cuts showing design and construction.

Maximum pressure rating.

Material of construction.

Pressure loss and flow rate data.

Steam Traps:

Catalog cuts showing design and construction.

Service limitations (maximum pressures and temperatures).

Materials of construction.

Flow rates at differential pressures shown on drawings.

Orifice size for each trap.

Monitoring equipment or attachments Flexible Connectors:

Catalog cuts showing design and construction.

Pressure and temperature ratings.

Materials of construction.

Maximum allowable lateral and axial movements.

Description of type of movement permitted, intermittent offset or continuous vibration.

Intended service.

Pipe Support Systems: The contractor shall provide the following with submissions.

Credentials of technical personnel who will design the support systems.

Description of computer program for pipe support selection indicating its capability and limitations. Provide documentation showing both program verification and validation results. List of projects where it was employed successfully.

SPEC WRITER NOTE: After any revisions or construction deviations, re-run stress analysis to ensure any revisions in support arrangement still result in allowable limits.

Input and output data for pipe support selection program for all piping systems with pipe sizes 65 mm (2-1/2 inches) and above.

Boiler, feedwater deaerator and header manifold steam nozzle (pipe connection) allowable and actual forces and moments imposed by connecting piping.

Hanger load calculation methods and results for piping systems with pipe sizes 50 mm (2 inches) and below.

Piping layouts showing location and type of each hanger support and anchors with unique identifiers that can be referenced back to the calculation results.

Catalog cuts showing design and construction of each hanger support and anchor and their conformance to MSS standards.

Drawings showing arrangement and sizes of all components comprising each spring-type hanger and support assembly.

Load rating and movement tables for all spring hangers//, and seismic shock absorbing devices//.

Stress analyses on the boiler plant piping systems under all possible load conditions as part of the design. Once all piping is completed another stress analysis is required on the as built systems. Documentation results shall flag locations/components requiring recommended revision/modification to obtain acceptable stress levels.

Complete operating and maintenance manuals including wiring diagrams, technical data sheets, information for ordering replacement parts, and troubleshooting guide:

Include complete list indicating all components of the systems.

Include complete diagrams of the internal wiring for each item of equipment.

Diagrams shall have their terminals identified to facilitate installation, operation and maintenance.

//Completed System Readiness Checklist provided by the Commissioning Agent and completed by the contractor, signed by a qualified technician and dated on the date of completion, in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.// //Submit training plans and instructor qualifications in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.//

QUALITY ASSURANCE

Entire installation shall comply with ASME B31.1 and appendices and NFPA 54.

Boiler External Piping, as defined in the ASME BPVC Section I, is required to be constructed and inspected in conformance with the ASME Code.

The products and execution of work specified in this section shall conform to the referenced codes and standards as required by the specifications. Local codes and amendments shall be enforced, along with requirements of local utility companies. The most stringent requirements of these specifications, local codes, or utility company requirements shall always apply. Any conflicts shall be brought to the attention of the COR.

Welding Qualifications: Before any welding is performed, contractor shall submit a certificate certifying that welders comply with the following requirements:

Qualify welding processes and operators for piping according to ASME BPVC Section IX, AWS Z49.1 and AWS B2.1/B2.1M.

Comply with provisions in //ASME B31.9// //ASME B31.1//.

Certify that each welder and welding operator has passed AWS qualification tests for welding processes involved and that certification is current and recent. Submit documentation to the COR.

All welds shall be stamped according to the provisions of the American Welding Society.

ASME Compliance: Comply with //ASME B31.9// //ASME B31.1// for materials, products, and installation. Safety valves and pressure vessels shall bear appropriate ASME labels.

DELIVERY, STORAGE AND HANDLING

All piping shall be stored and kept free of foreign material and shall be internally and externally cleaned of all oil, dirt, rust and foreign material. Deliver and store valves and pipe hangers in sealed shipping containers with labeling in place. Storage must be in dry, protected location.

SPEC WRITER NOTE: Fill blank spaces within this paragraph. Specification is based on high pressure saturated steam, 110 to 1034 kPa (16 to 150 psig), main header pressure in the boiler plant. The entire specification must be revised if header pressures are significantly lower or higher.

INFORMATION ON PRESSURE-TEMPERATURE DESIGN OF PIPING SYSTEMS

Steam service pressures are selected to provide optimum pressure to the facilities served by the boiler plant. Main steam header pressure shall be controlled at // // kPa (// // psig). Maximum pressure capability of steam systems between boilers and through first pressure reducing valve protected by a safety valve shall be governed by the pressure/temperature relationship of the highest safety valve setting shown for the boilers.

Steam distribution systems protected by safety valves following pressure reducing stations or protected by safety valves on the boilers shall be governed by the pressure/temperature relationship developed by the maximum setting of the safety valve on that system.

Boiler feedwater systems between boiler feed pumps, economizers (if provided), and boilers are designed for a normal maximum temperature of 138 degrees C (280 degrees F), and emergency temperature of 213 degrees C (415 degrees F) (if economizers are provided and economizer safety relief valve setting is 1896 kPa (275 psig)). Design pressure is the greater of: boiler feed pump shut off head; or 1896 kPa (275 psig) set pressure, plus accumulation, of economizer (if provided) relief valve.

Condensate collection and transfer systems to suction of boiler feed pumps are designed for maximum temperatures to 100 degrees C (212 degrees F), and pressures 276 kPa (40 psig). Vacuum return systems shall operate between 0 and 27 kPa (0 and 8-inch Hg) vacuum and equivalent steam saturation temperatures.

SPEC WRITER NOTE: Add pressure information on propane/air system if system is provided.

Natural gas fuel systems are designed and materials and equipment are applied to prevent failure under gas pressure of // // kPa (// // psig) entering Government property. LP gas systems for igniters (pilots) are designed for maximum LP tank pressure of 1724 kPa (250 psig).

Fuel oil system pressures are determined by the requirements of the burners and fuel trains. No. 2 oil systems are designed for maximum temperatures of 54 degrees C (130 degrees F), and pressures of 1034 kPa (150 psig).

Water service pressures are // // kPa (// // psig) maximum. Systems are designed to operate under conditions of maximum available pressure.

Drips, drains, blowdown, water sampling, and chemical treatment are designed, and materials and equipment are applied in accordance with the maximum pressure and temperature of the system with which they are associated.

Low pressure steam, condensate, vacuum and vents are designed for service pressures and temperatures equivalent to 103 kPa (15 psig) saturated steam.

Compressed air systems are designed to accommodate a maximum pressure of 861 kPa (125 psig).

Instrumentation and control piping shall be provided for the service and pressure characteristics of the systems to which they are connected.

AS-BUILT DOCUMENTATION

SPEC WRITER NOTE: Coordinate O&M Manual requirements with Section 01 00 00, GENERAL REQUIREMENTS. O&M manuals shall be submitted for content review as part of the close-out documents.

Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

Submit operation and maintenance data updated to include submittal review comments, VA approved substitutions and construction revisions shall be //in electronic version on CD or DVD// inserted into a three-ring binder. All aspects of system operation and maintenance procedures, including applicable piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations. Notes on all special systems or devices shall be included. A List of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining any special knowledge or tools the owner will be required to employ shall be inserted into the As-Built documentation.

SPEC WRITER NOTE: Select and edit one of the bracketed options after the paragraph below to indicate the format in which the contractor must provide record drawing files. Select the hand-marked option only when the designer has been separately contracted to provide the record drawings from the contractor’s mark-ups. Select the BIM option only when a BIM model will be generated, which is typically only performed by the designer on some Design-Bid-Build projects or by the contractor on some Design-Build projects.

The installing contractor shall maintain as-built drawings of each completed phase for verification; and, shall provide the complete set at the time of final systems certification testing. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ requirement. Provide record drawings as follows:

//Red-lined, hand-marked drawings are to be provided, with one paper copy and a scanned PDF version of the hand-marked drawings provided on CD or DVD.// //As-built drawings are to be provided, with a copy of them on AutoCAD version // // provided on CD or DVD. The CAD drawings shall use multiple line layers with a separate individual layer for each system.// //As-built drawings are to be provided, with a copy of them in three-dimensional Building Information Modeling (BIM) software version // // provided on CD or DVD.// The as-built drawings shall indicate the location and type of all lockout/tagout points for all energy sources for all equipment and pumps to include breaker location and numbers, valve tag numbers, etc. Coordinate lockout/tagout procedures and practices with local VA requirements.

Certification documentation shall be provided to COR 21 working days prior to submitting the request for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and provide documentation/certification that all results of tests were within limits specified. Test results shall contain written sequence of test procedure with written test results annotated at each step along with the expected outcome or setpoint. The results shall include all readings, including but not limited to data on device (make, model and performance characteristics), normal pressures, switch ranges, trip points, amp readings, and calibration data to include equipment serial numbers or individual identifications, etc.

PRODUCTS

STEAM PIPING

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or electric resistance welded (ERW). Schedule 40 for piping //up to 861 kPa (125 psig)// with welded ends. Schedule 80 for piping with threaded ends //and piping over 861 kPa (125 psig) with welded ends//.

Joints:

Pipe sizes 65 mm (2-1/2 inches) and above: Butt-welded, no other types allowed.

Pipe sizes 50 mm (2 inches) and below: Threaded, butt-welded, or socket-welded. Use Schedule 80 pipe and fittings for threaded joints.

Fittings:

Welded joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe, all elbows long radius.

Threaded joints: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig) class. Use Schedule 80 pipe and fittings for threaded joints.

Socket-welded joints: Forged steel, ASME B16.11, 13,790 kPa (2000 psig) class.

Unions on Threaded Piping: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class on piping 50 mm (2 inches) and under.

Flanges and Bolts: Forged steel weld neck, ASME B16.5, ASTM A105/A105M, 1034 kPa (150 psig) pressure class, except 2070 kPa (300 psig) class required adjacent to 1724 kPa (250 psig) and 2070 kPa (300 psig) class valves. Bolts shall be high strength steel ASTM A193/A193M, Class 2, Grade B7. Nuts shall be ASTM A194/A194M.

STEAM CONDENSATE PIPING

Includes all gravity, drip return, pumped and vacuum systems. Does not include piping system between boiler feed pumps and boilers.

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW, Schedule 80.

Joints:

Pipe sizes 65 mm (2-l/2 inches) and above: Butt-welded, no other types allowed.

Pipe sizes 50 mm (2 inches) and below: Schedule 80 threaded, butt-welded or socket-welded.

Fittings:

Welded joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe.

Threaded joints: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig class. Use Schedule 80 pipe and fittings for threaded joints.

Socket-welded joints: Forged steel, ASME B16.11, 13,790 kPa (2000 psig) class.

Unions on Threaded Piping: For piping 50 mm (2 inches) and under, forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class. Use Schedule 80 pipe and fittings for threaded joints.

Flanges: Forged steel weld neck, ASTM A105/A105M, ASME B16.5, 1034 kPa (150 psig).

FUEL PIPING

Natural gas, LP gas (propane), fuel oil (No. 2 heated) for main burner and igniter (pilot) fuels, gas vent piping. Comply with ASME B3l.l and NFPA 54.

Piping: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW, Schedule 40. Fuel oil piping shall be seamless downstream of burner automatic shutoff valves.

Joints:

Pipe sizes 65 mm (2-l/2 inches) and above: Butt-welded, no other types allowed.

Pipe sizes 50 mm (2 inches) and below: Socket-welded or butt-welded.

Fittings:

Butt-welded joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe.

Socket-welded joints: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig class.

Unions on piping 50 mm (2 inches) and under: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class.

Flanges: Forged steel weld neck, ASME B16.5, ASTM A105/A105M, 1034 kPa (150 psig).

Companion flanges: Flanges and bolting shall conform to ASME B16.5.

Burner Piping: Furnished as part of the factory-assembled burners may be manufacturer's standard materials and assembly. Comply with ASME B31.1, for the actual operating conditions.

Igniter (Pilot) Piping: Furnished as part of the factory assembled burners may have 2070 kPa (300 psig) ASTM A47/A47M, ASME B16.3 malleable iron threaded fittings in lieu of welded steel. If threaded fittings are provided, piping shall be Schedule 80.

BOILER FEEDWATER PIPING

Piping from boiler feedwater pump discharge to inlet of boilers.

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW. Piping with threaded joints shall be Schedule 80; welded joints Schedule 40. No joining of different schedule pipe in order to have welded on one end and threaded on the other. In these cases, the length of pipe shall be Schedule 80.

Joints:

Pipe sizes 65 mm (2-1/2 inches) and above: Butt-welded, no other types are allowed.

Pipe sizes 50 mm (two inches) and below: Threaded, butt-welded, or socket-welded.

No pipe to pipe joints when the length of the run is less than a full length of pipe.

Fittings:

Butt-welded Joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe.

Threaded Joints: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig class. Use Schedule 80 pipe and fittings for threaded joints.

Socket-welded joints: Forged steel, ASME B16.11, 13,790 kPa (2000 psig) class.

Unions: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class.

Flanges and Bolts: Forged steel weld neck, ASME B16.5, ASTM A105/A105M, 2070 kPa (300 psig) pressure class. Bolts shall be High strength ASTM A193/A193M, Class 2, Grade B7. Nuts shall be ASTM A194/A194M.

BOILER BLOWOFF PIPING

From boiler bottom blowoff connection to blowoff tank. Connections between boiler accessories drain valves and blowoff lines.

Pipe: Carbon steel, ASTM A106/A106M, Grade B, seamless, Schedule 80.

Joints: Butt-welded, no other types are allowed.

Fittings: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe, all elbows long radius. Tees or crosses are prohibited.

Flanges: Forged steel weld neck, ASME B16.5, ASTM A105/A105M, 2070 kPa (300 psig).

At no point shall the bottom blow down lines rise above the point of connection to the boiler.

DRAIN PIPING FROM BOILER ACCESSORIES TO DRAIN VALVE

Drain piping from water column, low water cutoffs, gauge glass, water level sensor, remote water level devices (where applied).

Pipe: Carbon steel, ASTM A106/A106M, seamless, Schedule 40.

Joints: Threaded.

Fittings: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig) class.

Unions: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class.

VENT LINES FROM TANKS AND SAFETY AND RELIEF VALVES

Pipe: Carbon steel, ASTM A53/A53M Grade B or A106/A106M Grade B, seamless or ERW, Schedule 40.

Joints:

Pipe sizes 65 mm (2-l/2 inches) and above: Butt-welded, no other types are allowed.

Pipe sizes 50 mm (2 inches) and below: Threaded or butt-welded.

Fittings:

Welded Joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, same schedule as adjoining pipe.

Threaded Joints: Steel, ASTM A234/A234M, Grade B, ASME B16.9, Schedule 80.

Unions: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class.

Flanges: Forged steel weld neck, ASME B16.5, ASTM A105/A105M, 1034 kPa (150 psig).

COLD WATER PIPING

Soft Water: See Section 22 31 11, WATER SOFTENERS.

City Water: See Section 22 11 00, FACILITY WATER DISTRIBUTION.

All copper pipe shall use only soldered fittings.

REVERSE OSMOSIS WATER PIPING

See Section 22 67 19.16, REVERSE OSMOSIS WATER EQUIPMENT.

All reverse osmosis piping in the boiler plant shall be stainless steel with all valves, etc. made of stainless steel. At no point shall the reverse osmosis water come into direct contact with carbon steel pipe or equipment.

COMPRESSED AIR PIPING (FUEL OIL ATOMIZING SERVICE)

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW Schedule 40.

Joints: Threaded.

Fittings: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig class); or malleable iron ASTM A47/A47M or ASTM A197/A197M, ASME Bl6.3, 1034 kPa (150 psig) class.

Unions: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class; or malleable iron, 1034 kPa (150 psig) class.

BOILER WATER SAMPLING, CONTINUOUS BLOWDOWN

Pipe: Steel, ASTM A106/A106M Grade B, seamless, Schedule 80.

Joints: Threaded.

Fittings: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig) class. Fittings between boiler and first stop valve must be forged steel, ASME B16.11, 13,790 kPa (2000 psig) or 20,685 kPa (3000 psig) class.

Unions: Malleable iron, 2070 kPa (300 psig) class.

FEEDWATER SAMPLING AND CHEMICAL FEED PIPING

Pipe: Stainless steel tubing, ASTM A269/A269M, Type 316.

Fittings: Stainless steel Type 316 welding fittings.

MISCELLANEOUS PIPING

Instrument and Control Piping (Sensing Point to Transmitter, Controller, or Other Instrument): Construction shall be same as specified for main service.

Drain Piping (All Drain Piping Discharging to Floor Drain-From Drain Valve to Floor Drain):

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW, Schedule 40.

Fittings and Unions: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig class); or malleable iron, 1034 kPa (150 psig), threaded.

Pump Recirculation:

Pipe: Carbon steel, ASTM A53/A53M Grade B or ASTM A106/A106M Grade B, seamless or ERW, double extra strong. Schedule 40 permitted on all lines 1500 mm (5 feet) or more from the recirculation orifice.

Joints: Threaded.

Fittings: Forged steel, ASME B16.ll, 13,790 kPa (2000 psig) class; or malleable iron, ASTM A47/A47M or ASTM A197/A197M, ASME B16.3, 2070 kPa (300 psig) class, except 1034 kPa (150 psig) class permitted on all lines 1500 mm (5 feet) or more from the recirculation orifice.

Unions: Forged steel, 13,790 kPa (2000 psig) class or 20,685 kPa (3000 psig) class; or malleable iron, ASTM A47/A47M or ASTM A197/A197M, same pressure class as nearest fittings.

DIELECTRIC FITTINGS

Provide threaded dielectric unions for pipe sizes 50 mm (2 inches) and under. For 65 mm (2-1/2 inches) and above, provide steel flanges electrically isolated at gasket and by sleeves at bolts. Fittings on cold water and soft water lines shall be rated for 690 kPa (100 psig), 27 degrees C (80 degrees F). Fittings on steam condensate lines shall be rated at 520 kPa (75 psig), 121 degrees C (250 degrees F). Fittings on other services shall be rated for the maximum pressure and temperature conditions of the service.

VALVES; GATE, GLOBE, PLUG, CHECK, BALL, BUTTERFLY, VENT COCKS

Valves for particular services are generally specified as Type Numbers. The Type Numbers are defined below. All valves of the same type shall be the products of a single manufacturer. Comply with MSS SP-45, MSS SP-80, and ASME B3l.l. Design valves for the service fluids and conditions. Pressure-temperature ratings listed are minimum requirements. Packing and gaskets shall not contain asbestos.

Valve Type Designations:

Gate Valves:

Type 101: Cast steel body ASTM A216/A216M WCB, rated for 1034 kPa at 260 degrees C (150 psig at 500 degrees F), ll.5 to l3 percent chromium stainless steel flexible wedge and hard faced (stellite) or nickel copper alloy seats, 1034 kPa (150 psig) ASME flanged ends, OS&Y, rising stem, bolted bonnet.

Provide factory installed globe-valved warm-up bypass when main valve is 75 mm (3 inch) pipe size or greater and serves steam main longer than 6.1 m (20 feet). Conform to MSS SP-45.

Drill and tap bosses for connection of drains if valve is in steam service. Conform to MSS SP-45.

Type 102: Cast steel body ASTM A2l6/A216M WCB, Class 300, ll.5 to l3 percent chromium stainless steel flexible wedge and hard faced (stellite) alloy seats, ASME flanged ends, OS&Y, rising stem, and bolted bonnet.

Provide factory installed globe-valved bypass when main valve is 75 mm (3 inch) pipe size or greater and serves steam main longer than 6.1 m (20 feet). Conform to MSS SP-45.

Drill and tap bosses for connection of drains if valve is in steam service. Conform to MSS SP-45.

Type 103: Cast steel body ASTM A2l6/A216M WCB, Class 300, ll.5 to l3 percent chromium stainless steel flexible wedge and hard faced (stellite) alloy seats, ASME flanged ends, OS&Y, rising stem, and bolted bonnet.

Provide factory installed globe-valved bypass when main valve is 75 mm (3 inch) pipe size or greater and serves steam main longer than 6.1 m (20 feet). Conform to MSS SP-45.

Drill and tap bosses for connection of drains if valve is in steam service. Conform to MSS SP-45.

Type 105: Forged steel body ASTM A105/A105M, rated for 2070 kPa at 216 degrees C (300 psig at 420 degrees F) minimum, Class 4138 kPa (600 psig) or Class 5515 kPa (800 psig), hardened stainless steel or stellite wedge and seats, threaded ends, OS&Y, rising stem, bolted bonnet.

Globe Valves:

Type 201: Cast steel body ASTM A216/A216M WCB, rated for 1034 kPa at 260 degrees C (150 psig at 500 degrees F), 11-1/2 to 13 percent chromium stainless steel or stellite disc and seat, 1034 kPa (150 psig) ASME flanged ends, OS&Y, rising stem, bolted bonnet, renewable seat rings. Drill and tap bosses for connection of drains where shown. Conform to MSS SP-45.

Type 205: Forged steel body ASTM A105/A105M, rated for 2070 kPa at 216 degrees C (300 psig at 420 degrees F) minimum, Class 4138 kPa (600 psig) or Class 5515 kPa (800 psig), stainless steel disc, stellite seat, threaded ends, OS&Y, rising stem, bolted bonnet.

Plug Valves: Cast steel body ASME B16.5 Class 150, one-fourth turn to open. 861 kPa (125 psig) ASME flanged ends for pipe sizes above 50 mm (2 inches), threaded ends for pipe sizes 50 mm (2 inches) and under. All components designed for service to which applied: natural gas, LP gas (propane), or fuel oil. Furnish lever handle for each valve.

Type 301: Two-way valves up through 100 mm (4 inches) pipe size. Eccentric action, non-lubricated plug with resilient seal molded into groove on plug face providing bubble-tight shut off. O-ring stem seal, corrosion-resistant bearings, corrosion-resistant seat coating, seal materials as recommended by valve manufacturer for the service. Valves on natural gas service AGA approved.

Type 302: Two-way valves 125 mm (5 inches) pipe size and above, all sizes of three-way valves. Lubricated full-port plug type with lubricant for intended service. Reinforced Teflon stem seal, valve plug floated on Teflon surfaces, lubricant injection system that has sufficient pressure to fully lubricate all sealing surfaces. Provide laminated plastic label attached to each valve stating, “Lubricate with //(Insert appropriate description)// once a year”.

Check Valves:

Type 401: Not used.

Type 402: Swing-type, cast steel body ASME B16.34, rated for 1724 kPa (250 psig) saturated steam, 3447 kPa (500 psig) WOG, bronze or bronze-faced disc and seat, 1724 kPa (250 psig) ASME flanged ends, bolted cover, renewable disc and seat.

Type 403: Swing-type, cast steel body ASME B16.34, rated for 861 kPa (l25 psig) saturated steam, 1380 kPa (200 psig) WOG, bronze or bronze-faced disc and seat, 861 kPa (l25 psig) ASME flanged ends, bolted cover, renewable disc and seat.

Type 405: Lift-type, forged steel body ASTM A105/A105M, rated for 2070 kPa at 216 degrees C (300 psig at 420 degrees F) minimum (Class 4138 kPa (600 psig) or 5515 kPa (800 psig)), hardened stainless steel disc, hard faced seat, bolted cover, threaded ends.

Type 406: Swing-type, Type 316 stainless steel body, disc and hanger, rated for 1724 kPa at 182 degrees C (250 psig at 360 degrees F) minimum.

Type 408: Silent spring-loaded wafer type, cast steel ASTM A216/A216M WCB body, rated for 2070 kPa (300 psig) water, 121 degrees C (250 degrees F), stainless steel trim.

Ball Valves: Reduced port permitted for bypass (throttling) service; full port required for all other services, one-fourth turn to open.

Type 501: Type 316 stainless steel body, ball and stem, rated for 1034 kPa at 185 degrees C (150 psig at 365 degrees F), 4138 kPa at 93 degrees C (600 psig at 200 degrees F); reinforced TFE seat, stem seal and thrust washer; end entry, threaded ends.

Type 502: Steel body, rated for 1034 kPa at 185 degrees C (150 psig at 365 degrees F), 1724 kPa at 121 degrees C (250 psig at 250 degrees F), reinforced TFE seat, stem seal and thrust washer; end entry, threaded ends, UL-listed for natural or LP gas shut off service when used on those services.

Type 503: Carbon steel body, steam service, rated for 1380 kPa at 200 degrees C (200 psig at 392 degrees F), stainless steel ball and stem, Polyfil seat, live-loaded or adjustable stem seal, threaded ends.

Type 504: Carbon steel body, saturated steam service, rated for 1034 kPa (150 psig), stainless steel ball and stem, Polyfil seat, live-loaded stem seal, ASME flanged ends.

Butterfly Valves:

Type 601: Carbon steel ASTM A216/A216M wafer style, rated for 861 kPa at 121 degrees C (125 psig at 250 degrees F), bronze disc, stainless steel stem, EPDM liner, EPDM stem seal and body seal, neck extending beyond pipe insulation, lever operator.

Type 602: Carbon steel body, triple-offset design, lug or flanged type, rated for steam service at 1034 kPa at 260 degrees C (150 psig at 500 degrees F), stainless steel nitrided disc, stainless steel seat, stainless steel shaft, stainless steel/graphite laminated seal ring, neck extending beyond pipe insulation, geared handwheel operator for valves 100 mm (4 inch) pipe size and over, lever operator for valves 75 mm (3 inch) pipe size and under.

Gas Vent Cocks: Type 701, bronze body, tee handle, rated for 207 kPa at 38 degrees C (30 psig at 100 degrees F), ground plug, rated for tight shut-off on fuel gas service.

Boiler Valves:

Steam Non-Return Stop Check Valves:

Type: Straight-way Y-pattern, with dash-pot and piston and tapped drain openings, OS&Y, bolted bonnet, rising stem. Provide angle pattern only if shown on the contract drawings.

Construction: Cast steel body ASTM A216/A216M WCB, rated for 2070 kPa (300 psig) saturated steam, stellite faced steel disc, alloy steel seat, 2070 kPa (300 psig) ASME flanged ends.

Operation: Valves shall automatically close tightly when boiler steam pressure becomes less than that of the steam header. Valves shall operate without sticking or chattering.

Stop Valves for Steam Vents on Boiler Drums and Steam Lead, Steam Pressure Gauge:

Installation of steam pressure gauge shut-off valves shall conform to ASME BPVC, Section I.

Angle stop valves (water tube boilers), OS&Y, chain operated, cast or forged steel, 1380 kPa (200 psig) steam rating, renewable seat and disc.

Gate valves, two inches and under: Type 105.

Valves in Drain Lines from Steam Stop Check Valve, Water Column, Gauge Glass, Low Water Cut-offs:

Gate valves, two inches and under: Type 105.

Check valves, two inches and under: Type 405.

Bottom Blowoff Valves:

SPEC WRITER NOTE: Field reports on durability of the valves specified are uniformly excellent. Other makes and types of valves have a mixed service record.

Type: Seatless, sliding plunger, 0S&Y, designed for blowoff service. Sliding disc-type or globe-type valves are prohibited.

Construction: ASTM A216/A216M WCB cast steel body, rated for 2070 kPa (300 psig) saturated steam, 2070 kPa (300 psig) ANSI flanged ends. Valves shall have handwheel with rotating handle.

Conform to ASME B31.1.

Steam above 103 kPa (15 psig), all valves in steam pressure reducing stations:

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-1/2 inches) and above: Type 101.

Globe valves, 50 mm (2 inches) and under: Type 205.

Globe valves, 65 mm (2-1/2 inches) and above: Type 201.

Butterfly valves, 75 mm (3 inches) and above: Type 602.

Ball valves, 50 mm (2 inches) and under: Type 503.

Ball valves, 65 mm (2-1/2 inches) and above: Type 504.

Steam 103 kPa (15 psig) and under:

Gate Valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-1/2 inches) and above: Type 103.

Globe valves, 50 mm (2 inches) and under: Type 205.

Globe valves, 65 mm (2-1/2 inches) and above: Type 205.

Butterfly valves, 75 mm (3 inches) and above: Type 602.

Ball valves, 50 mm (2 inches) and under: Type 503.

Ball valves, 65 mm (2-1/2 inches) and above: Type 504.

Boiler Feedwater from Pumps to Boilers, Recirculation:

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-1/2 inches) and above: Type 102.

Globe valves, 50 mm (2 inches) and under: Type 205.

Globe valves, 65 mm (2-l/2 inches) and above: Type 205.

Check valves, at boiler feed pump discharge: Type 408.

Check valves, at boiler, 50 mm (2 inches) and under: Type 405.

Check valves, at boiler, 65 mm (2-1/2 inches) and above: Type 402.

Condensate, Condensate Transfer, Boiler Feedwater from Feedwater Deaerator to Boiler Feed Pump Suction, Overflow, Control and Instrument Piping for Condensate Storage Tank and for Feedwater Deaerator:

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-1/2 inches) and above: Type 103.

Globe valves, 50 mm (2 inches) and under: Type 205.

Globe valves, 65 mm (2-1/2 inches) and above: Type 205.

Butterfly valves, 65 mm (2-1/2 inches) and above Type 601.

Ball valves, 50 mm (2 inches) and under: Type 502.

Ball valves, 65 mm (2-1/2 inches) and above: Type 504.

Check valves 50 mm (2 inches) and under: Type 405.

Check valves, 65 mm (2-1/2) inches and above: Type 403.

Check valves on pump discharge, all sizes: Type 408.

Boiler Water Sampling, Continuous Blowdown:

Gate Valves, 50 mm (2 inches) and under: Type 105.

Globe valves, 50 mm (2 inches) and under: Type 205.

Check valves, 50 mm (2 inches) and under: Type 405.

Ball valves, 50 mm (2 inches) and under: Type 502.

SPEC WRITER NOTE: If automatic continuous blowdown control systems are specified in Section 23 50 11, BOILER PLANT MECHANICAL EQUIPMENT, the following valve can be deleted from this specification (23 21 11) because it is included in the automatic blowdown control system in Section 23 50 11, BOILER PLANT MECHANICAL EQUIPMENT.

Continuous Blowdown Flow Control Valve: Forged steel angle-type body, rated for 2070 kPa at 288 degrees C (300 psig at 550 degrees F), hardened stainless steel disc and seat, threaded ends, rising stem, union bonnet, graduated micrometer-type dial and pointer showing amount of valve opening. Furnish valve blowdown chart showing flow rate versus valve opening based on 861 kPa (125 psig) boiler drum pressure.

Feedwater Sampling:

Ball valves, 50 mm (2 inches) and under: Type 501.

Check valves, 50 mm (2 inches) and under: Type 406.

Chemical Feed System:

Ball valves, 50 mm (2 inches) and under: Type 501.

Check valves, 50 mm (2 inches) and under: Type 406.

Fuel Oil: Discharge side of pumps. Conform to NFPA 30 and NFPA 3l.

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate Valves, 65 mm (2-l/2 inches) and above: Type 101 or 102.

Globe valves, 50 mm (2 inches) and under: Type 205.

Plug valves, 100 mm (4 inches) and under: Type 301. (Tank isolating valve on return line.)

Check valves, 50 mm (2 inches) and under: Type 405 or 408.

Check valves, 65 mm (2-l/2 inches) and above: Type 402 or 408.

Ball valves, 50 mm (2 inches) and under: Type 502.

Fuel Oil: Suction side of pumps and tank fill lines where tank is below fill point. Conform to NFPA 30 and NFPA 3l.

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-l/2 inches) and above: Type 103.

Plug valves, 100 mm (4 inches) and under: Type 301.

Check valves, 50 mm (2 inches) and under: Type 405.

Check valves, 65 mm (2-l/2 inches) and above: Type 403.

Ball valves, 50 mm (2 inches) and under: Type 502.

Fuel Oil: Tank fill lines where tank is above fill point.

Gate valves, 50 mm (2 inches) and under: Type 105.

Gate valves, 65 mm (2-1/2 inches) and above: Type 103.

Check valves, all sizes: Type 408.

Fuel Gas: Main fuel and igniter (pilot) systems.

Plug valves, 100 mm (4 inches) and under: Type 301.

Ball valves, 50 mm (2 inches) and under: Type 502. May be applied where plug valves are shown.

Plug valves, 125 mm (5 inches) and above: Type 302.

Plug valves, three-way, all sizes: Type 302.

Check valves, 50 mm (2 inches) and under: Type 405.

Vent cocks, 15 mm (1/2 inch) and under: Type 701.

Compressed Air:

Gate valves, 50 mm (2 inches) and under: Type 105.

Ball valves, 50 mm (2 inches) and under: Type 502.

City (Cold) Water: See Section 22 11 00, FACILITY WATER DISTRIBUTION.

Soft Water: See Section 22 31 11, WATER SOFTENERS.

Instrumentation and Control Piping: Ball valves, 50 mm (2 inches) and under: Type 502.

Non-Boiler Blowdowns, Drains, Flow Sensing Lines:

Gate valves, 50 mm (2 inches) and under: Type 105.

Ball valves, 50 mm (2 inches) and under: Type 503.

GAUGES, PRESSURE AND COMPOUND

ASME B40.100, Accuracy Grade 1A, (pressure, vacuum, or compound), initial mid-scale accuracy 1 percent of scale (Qualify grade), metal or phenolic case, 115 mm (4-1/2 inches) in diameter, 6 mm (1/4 inch) NPT bottom connection, white dial with black graduations and pointer, clear glass or acrylic plastic window, suitable for board mounting. Provide red "set hand" to indicate normal working pressure.

Provide steel, lever handle union cock. Provide steel or stainless-steel pressure snubber for gauges in water service. Provide steel pigtail syphon for steam gauges.

SPEC WRITER NOTE: Verify with facility personnel the preference for English or metric gauge measurement units and edit accordingly.

Pressure gauge ranges shall be selected such that the normal operating pressure for each gauge is displayed near the midpoint of each gauge’s range. Gauges with ranges selected such that the normal pressure is displayed at less than 30 percent or more than 70 percent of the gauge’s range are prohibited. The units of pressure shall be //kPa// //psig//.

SIGHT FLOW INDICATORS

Provide, where shown, to allow observation of flow in piping systems.

Type: In line, dual portholes on opposite sides, with safety shield, with or without rotor as shown on the drawings. Where provided, rotor shall have minimum of three vanes.

Construction: Carbon steel body, tempered borosilicate window, PTFE seals (except Buna-N on oil service), threaded ends on pipe sizes under 65 mm (2-1/2 inches), flanged ends on sizes 65 mm (2-1/2 inches) and above. Pressure and temperature ratings shall be equivalent to requirements for valves on the same pipelines.

Safety Shield: Transparent wrap-around overlap covering entire sight flow indicator, designed to protect personnel from failure of indicator. Shield shall fit the indicator tightly and be suitable for 1034 kPa, 150 degrees C (150 psig, 302 degrees F).

QUICK-COUPLE HOSE CONNECTORS AND STEAM HOSES

Provide on all Y-strainer drains and where shown to allow quick connection of length of hose to piping drain or blowoff so that discharge fluid (water or steam) can be conveyed to a drainage system.

Type: Straight through, plug and socket, screw type or cam locking connections, all units 20 mm (3/4 inch) pipe size. Integral shut-off devices not required.

Service: Design for water and steam at 103 kPa (15 psig), 154 degrees C (309 degrees F).

Spare Parts: Furnish one socket and one plug.

Accessories: Furnish two hoses 6.1 m (20 feet) long, 20 mm (3/4 inch) inside diameter, rated for steam service at 690 kPa, 149 degrees C (100 psig, 300 degrees F). Hose must be sufficiently flexible to be placed in 1200 mm (4 foot) diameter coil. Provide connector on one end of each hose to mate with connectors on drains. Provide hose rack for holding both hoses. Securely mount rack in location selected by COR.

SAFETY VALVES, RELIEF VALVES, SAFETY RELIEF VALVES AND ACCESSORIES

Provide valves and accessories to protect piping systems and pressure vessels from over-pressure. All valves shall comply with ASME BPVC Section I and ASME BPVC Section VIII). Flow capacities shall be certified by National Board of Boiler and Pressure Vessel Inspectors (NB).

Boiler and Economizer Service: Refer to Section 23 52 39, FIRE-TUBE BOILERS or Section 23 52 33, WATER-TUBE BOILERS.

SPEC WRITER NOTE: Flow capacities of safety valves located at the outlet of pressure reducing stations shall be sufficient for the maximum capacity of the largest pressure reducing valve, or the wide-open bypass valve, whichever is greater. Refer to National Board Inspection Code, NB-23, “Safety Valves on the Low-Pressure Side of Steam Pressure Reducing Valves”.

Steam Service (Pressure Vessels and Piping Systems): Refer to schedules on drawings for set pressures and capacities. Provide lifting levers, stainless steel trim, lapped seats on steel valves.

Fuel Oil Service: Refer to Section 23 50 11, BOILER PLANT MECHANICAL EQUIPMENT.

Compressed Air Service: Refer to Section 23 50 11, BOILER PLANT MECHANICAL EQUIPMENT.

Drip Pan Ells: Cast iron factory-built safety valve discharge fitting with pipe-within-pipe slip-type connection to vertical vent pipe, basin for collecting condensate from vent pipe, drain connections on basin and at base of ell.

STEAM PRESSURE REDUCING VALVES

Type: Single-seated, diaphragm operated, spring-loaded, steam pilot-controlled, normally closed, packless, adjustable set pressure. Pilot shall sense controlled pressure downstream of main valve.

Service: Provide controlled reduced pressure to steam piping systems. Design for saturated steam at pressures shown on drawings or equipment requirements.

Performance: Pressure control shall be smooth, continuous. Maximum //10// // // percent deviation from set pressure over an //10/1// // / // turndown. Refer to schedules on drawings for flow and pressure requirements. Downstream safety valve shall be sized equal to or exceed the maximum total flow capacity of the pressure reducing station.

Construction:

Main Valve – Pipe sizes 50 mm (2 inches) and less: Steel body rated for 1724 kPa (250 psig), threaded ends. Globe body valve and seat shall be replaceable, Type 316 stainless steel and include stainless steel stem.

Main Valves – Pipe sizes greater than 50 mm (2 Inches): Steel body rated for 1034 kPa (150 psig), ASME flanged ends, or steel body 1724 kPa (250 psig) ASME flanged ends. Globe body valve and seat shall be replaceable, Type 316 stainless steel and include stainless steel stem.

Pilot Valve: Valve plug and seat shall be replaceable, stainless steel or Monel.

//Direct Digital Control Valves: May be furnished in lieu of steam operation. All specification requirements for steam operated valves shall apply. In the event of signal failure, //valves shall be normally closed// //failsafe device accessory in the actuator to stroke valve to predetermined position indicated//.