TECHSPECS_18B0003_amend0003.pdf

Lower Monumental Drainage & Unwatering Pumps System W912EF-18-B-0003 Replacement

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00.00 28 GENERAL REQUIREMENTS

01 11 01.00 28 SUPPLEMENTARY REQUIREMENTS

01 14 00.10 28 PROJECT SITE RESTRICTIONS

01 14 00.90 28 INTEGRATING ANTITERRORISM (AT) AND OPERATIONS SECURITY

(OPSEC)

01 22 00.00 28 MEASUREMENT AND PAYMENT

01 32 01.00 28 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 10.00 28 DIVING

01 35 29.10 28 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 01.00 28 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 45 04.00 28 CONTRACTOR QUALITY CONTROL

01 51 00.00 28 TEMPORARY UTILITIES

01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

01 57 20.00 28 ENVIRONMENTAL PROTECTION

01 73 19.10 28 INSTALLATION AND COMMISSIONING

01 78 00.00 28 CLOSEOUT SUBMITTALS

01 78 23.00 28 OPERATION AND MAINTENANCE DATA

DIVISION 02 - EXISTING CONDITIONS

02 24 10.10 28 DEWATERING

02 41 00.00 28 DEMOLITION

02 82 13.01 28 CLASS II ASBESTOS ABATEMENT

02 83 33.13 28 TOXIC METALS BASED PAINT REMOVAL AND DISPOSAL

DIVISION 03 - CONCRETE

03 30 50.00 28 MINOR CONCRETE

03 60 00.00 28 CONCRETE CORE DRILLING, DEMOLITION AND REPAIR OF CONCRETE

SURFACES

DIVISION 05 - METALS

05 50 03.00 28 MISCELLANEOUS PRODUCTS AND EQUIPMENT

05 50 14.00 28 METALWORK AND METAL FABRICATION

DIVISION 13 - SPECIAL CONSTRUCTION

13 48 00.01 28 SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT

DIVISION 22 - PLUMBING

22 11 00.01 28 PIPING AND VALVES

DIVISION 26 - ELECTRICAL

26 05 00.00 28 GENERAL ELECTRICAL WORK

26 05 19.00 28 INSULATED WIRE AND CABLE

26 12 19.10 THREE-PHASE MEDIUM VOLTAGE FLOOR/PAD-MOUNTED TRANSFORMER

26 13 16.00 28 SWITCHGEAR - MEDIUM VOLTAGE

26 18 39.01 28 SOFT STARTER - MEDIUM VOLTAGE

26 24 19.00 28 MOTOR CONTROL CENTERS - LOW VOLTAGE

26 29 01.00 28 ELECTRIC MOTORS, 3-PHASE VERTICAL INDUCTION TYPE

PROJECT TABLE OF CONTENTS Page 1

26 29 23.10 28 VARIABLE FREQUENCY DRIVE SYSTEMS

DIVISION 40 - PROCESS INTERCONNECTIONS

40 94 43.01 28 PROCESS CONTROLLERS - PROGRAMMABLE LOGIC CONTROLLERS (PLC)

DIVISION 43 - PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND STORAGE

EQUIPMENT

43 21 39.01 28 PUMPS: WATER, VERTICAL TURBINE

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 2

SECTION TABLE OF CONTENTS

DIVISION 22 - PLUMBING

SECTION 22 11 00.01 28

PIPING AND VALVES

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.5 PIPING DRAWINGS

PART 2 PRODUCTS

2.1 WATER PIPING

2.1.1 Galvanized Steel Piping

2.1.2 Stainless Steel Piping

2.2 VALVES

2.2.1 Resilient Seat Wedge Gate Isolation Valves

2.2.2 Silent Check Valves

2.2.3 Ball Valves

2.3 MISCELLANEOUS PIPING MATERIALS

2.3.1 Flanges and Gaskets

2.3.2 Threaded Fittings

2.3.3 Stainless Steel Flexible Couplings

2.3.4 Welded Outlets

2.3.5 Pressure Gauges

2.3.6 Offset Pipe Clamps

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Piping Joints

3.1.1.1 Threaded

3.1.1.2 Unions and Flanges

3.2 FIELD QUALITY CONTROL

3.2.1 Inspections

3.2.2 Field Testing

3.2.2.1 Water Piping Test Plan

3.3 WELD TESTING

-- End of Section Table of Contents --

SECTION 22 11 00.01 28 Page 1

SECTION 22 11 00.01 28

PIPING AND VALVES

PART 1 GENERAL

1.1 SCOPE

This section specifies the materials and workmanship standards applicable to the fabrication, assembly, installation, and testing of the various items of piping work. The only piping this section does not apply to is the waste oil piping covered in section 05 50 03.00 28 MISCELLANEOUS PRODUCTS AND EQUIPMENT which is to be installed at Lower Monumental only and the small copper lubrication water and discharge pressure piping also covered in section 05 50 03.00 28 MISCELLANEOUS PRODUCTS AND EQUIPMENT.

These requirements are in addition to those contained in other sections or indicated on the drawings.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2015) Structural Welding Code - Steel

ASME INTERNATIONAL (ASME)

ASME B1.20.1 (1983; R 2006) Pipe Threads, General Purpose (Inch)

ASME B16.3 (1992) Malleable Iron Threaded Fittings

ASME B16.42 (2011) Ductile Iron Pipe Flanges and Flanged Fittings, Classes 150 and 300

ASME B16.5 (2003) Pipe Flanges and Flanged Fittings

ASME B16.21 (1992) Nonmetallic Flat Gaskets for Pipe Flanges

ASME B31.3 (2010) Process Piping

ASME B36.19M (2004; R 2015) Stainless Steel Pipe

ASME B40.100 (2000) Pressure Gauges and Gauge Attachments

ASTM INTERNATIONAL (ASTM)

ASTM A 53 (1997) Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless

ASTM A 105/A 105M (2005) Carbon Steel Forgings for Piping

SECTION 22 11 00.01 28 Page 2

Applications

ASTM A 516/A 516M (2004) Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service

ASTM A536 (1984; R 2014) Standard Specification for Ductile Iron Castings

ASTM A123/A123M (2013) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A320/A320M (2015) Standard Specification for Alloy/Steel and Stainless Steel Bolting Materials for Low-Temperature Service

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C515 (2009) Reduced-Wall, Resilient-Seated Gate Valves for Water Supply Service

AWWA C606 (2015) Grooved and Shouldered Joints

INTERNATIONAL CODE COUNCIL (ICC)

ICC Plumbing Code (2012) International Plumbing Code

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-25 (1998) Standard Marking System for Valves, Fittings, Flanges and Unions

MSS SP-110 (1996) Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Piping Drawings; G, ME

SD-03 Product Data

Resilient Seat Wedge Gate Isolation Valves; I, ME

Silent Check Valves; I, ME

Stainless Steel Flexible Couplings; I, ME

SD-06 Test Reports

SECTION 22 11 00.01 28 Page 3

Water Piping Test Plan; I, ME

Discharge Piping Weld Test; I, ME

1.4 QUALITY ASSURANCE

Plumbing systems including fixtures, equipment, materials, installation, and workmanship shall be in accordance with the ICC Plumbing Code (referred to herein as Plumbing Code) except as modified herein. In the Plumbing Code the advisory provisions shall be considered to be mandatory, as though the word "shall" had been substituted for the word "should" wherever it appears; reference to the "authority having jurisdiction," the Administrative Authority, the Plumbing Official, and the Design Engineer shall be interpreted to mean the Contracting Officer.

1.5 PIPING DRAWINGS

The Contractor shall submit Piping Drawings for the pump discharge pipes and columns as well as the collection piping that will be installed in the drainage sumps. Drawings shall consist of plans drawn to scale, with elevations, sections and details to show clearly the location (by dimension to pertinent building features) of all piping except the waste oil piping for Lower Monumental covered in section 05 50 03.00 28 MISCELLANEOUS PRODUCTS AND EQUIPMENT. This includes but is not limited to, details of connections and size and type of piping and valves, all support types and locations, pipe thrust restraints, sway braces, and appurtenances.

PART 2 PRODUCTS

2.1 WATER PIPING

2.1.1 Galvanized Steel Piping

Steel pipe for the pump shaft columns and pump discharge pipes shall be galvanized steel pipe conforming to ASTM A 53, Type S, Grade B, seamless pipe. For nominal pipe sizes equal to or greater than 4 inches in diameter flanged connection and fittings shall be used according to ASME B16.5 and ASME B16.42 class 150 as applicable, unless noted otherwise. For nominal pipe sizes less than 4 inches in diameter threaded connections and fittings shall be used according to ASME B16.3 class 150, unless noted otherwise.

Fabricated piping shall be "hot-dip" galvanized in accordance with ASTM A123/A123M after all welding is complete. All welding and repairs to galvanizing shall be done according to 05 50 14.00 28 METALWORK AND METAL

FABRICATION.

2.1.2 Stainless Steel Piping

Pipe for the collection piping installed in the drainage sumps shall be 300 series stainless steel seamless pipe conforming to ASME B36.19M.

Stainless steel pipe flanges and flanged fittings shall conform to the requirements of ASME B16.5.

2.2 VALVES

Generally, valves shall conform to ASME B16.34 as applicable or unless specified otherwise. Valves of nominal sizes equal to or greater than 4 inches in diameter shall have flanged end connections conforming to ASME B16.42 class 150. Valves of nominal sizes less than 4 inches in

SECTION 22 11 00.01 28 Page 4 diameter shall have threaded end connections according to ASME B16.3 class 150 with a union on all but one side of the valve, or solder end connections for connections between bronze valves and copper tubing. All new valves shall be provided with means to lock them in both the open and closed positions.

2.2.1 Resilient Seat Wedge Gate Isolation Valves

Resilient Seat Wedge Gate valves shall conform to AWWA C515. Valves shall be American Flow Control 2500 series or approved equal. Valves shall have a ductile iron body, stainless steel stem, bronze mounted trim, bolted bonnet and EPDM rubber encapsulated ductile iron wedge. Each valve shall be provided with a non-rising stem and a gear operator per manufacturer's recommendation and chain hand-wheel for valves located more than 6 feet above the floor. The Contractor shall submit the following product data:

Resilient Seat Wedge Gate Isolation Valves

2.2.2 Silent Check Valves

Silent type check valves shall be Apco Series 600 or equal. The check valve shall begin to close as forward flow diminishes and be fully closed at zero velocity preventing flow reversal and resultant water hammer or shock. The valve body shall be constructed of ductile iron meeting ASTM A536 class 150. The valve shall be provided with flanges according to ASME B16.42 class 150. The Contractor shall submit the following product data:

Silent Check Valves

2.2.3 Ball Valves

Ball valves for pipe sizes less than 2.5 inches shall conform to the requirements of MSS SP-110 full port design, copper alloy. Valves shall have two-position lever handles.

2.3 MISCELLANEOUS PIPING MATERIALS

2.3.1 Flanges and Gaskets

Flanged fittings including flanges, bolts, nuts, bolt patterns, etc. shall be in accordance with ASME B16.5 Class 150 and shall have the manufacturer's trademark affixed in accordance with MSS SP-25. Flange material shall conform to ASTM A 105/A 105M. Blind flange material shall conform to ASTM A 516/A 516M. Bolts shall conform to ASTM A320/A320M. For stainless steel threaded connections use thread lock per 05 50 03.00 28 MISCELLANEOUS PRODUCTS AND EQUIPMENT. Flange gaskets shall be full face flat type gaskets conforming to the requirements of ASME B16.21. Flange gaskets for the collection piping in the drainage sump shall be Nitrile rubber suited for non-potable water service and resistant to a wide range of oils, greases and other lubricants. Flange gaskets for the pump discharge piping shall be suited to non-potable water service with galvanized piping.

2.3.2 Threaded Fittings

Threaded fittings shall be made of galvanized malleable iron and conform to the requirements of ASME B16.3 class 150. Threaded joints shall have American Standard taper pipe threads conforming to ASME B1.20.1.

SECTION 22 11 00.01 28 Page 5

G4EDDMTJ

Line

2.3.3 Stainless Steel Flexible Couplings

Couplings shall be Victaulic Style 77S and 77DX or an approved equal grooved joint coupling meeting the requirements of AWWA C606. The contractor shall submit the following product data:

Stainless Steel Flexible Couplings

2.3.4 Welded Outlets

Where indicated branches in pipe spools shall be made using welded branch outlets. Outlets shall be designed for their intended purpose and made of a material compatible with the pipe spool. Outlets shall be formed to allow a full penetration weld between the pipe spool and outlet. Outlets shall be sized to match the branch pipe size.

2.3.5 Pressure Gauges

Pressure gauges shall be installed as indicated. Gauges shall be of the pressure indicating dial type, glycerin filled with an elastic element.

Gauges shall conform to the minimum requirements of ASME B40.100. Gauges shall have a minimum 6 inch diameter face and be equipped with an isolation valve.

2.3.6 Offset Pipe Clamps

Offset pipe clamps in the drainage sump shall be stainless steel to match the material of the pipe which they support and be of the size required to fit the pipe supported. Material shall be minimum 1/4" by 1-1/2" for 4" pipe and minimum 1/4" by 2" for 6" pipe.

PART 3 EXECUTION

3.1 INSTALLATION

Installation of plumbing systems including piping, equipment, materials, and workmanship shall be in accordance with the ICC Plumbing Code, except as modified herein. Plastic piping shall not be permitted.

3.1.1 Piping Joints

Installation of pipe and fittings shall be made in accordance with the manufacturer's recommendations. Mitering of joints for elbows and notching of straight runs of pipe for tees will not be permitted. Joints shall be made up with fittings of compatible material and made for the specific purpose intended.

3.1.1.1 Threaded

Only male pipe threads shall be coated with graphite or with an approved graphite compound, or with an inert filler and oil, or shall have a polytetrafluoroethylene (PTFE) tape applied.

3.1.1.2 Unions and Flanges

Unions, flanges and mechanical couplings shall not be concealed in walls, ceilings, or partitions. Unions shall be used on pipe sizes less than 4 inches; flanges shall be used on pipe sizes 4 inches and larger.

SECTION 22 11 00.01 28 Page 6

3.2 FIELD QUALITY CONTROL

3.2.1 Inspections

Prior to initial operation, inspect piping system for compliance with drawings, specifications, and manufacturer's submittals.

3.2.2 Field Testing

Each system shall be tested as in service in order to demonstrate compliance with the contract requirements before final acceptance of the work. Perform the following tests in addition to the tests specified in the Plumbing Code, except as modified herein. The results of each test shall be submitted in report form. Defects in the work shall be corrected by the Contractor, and tests repeated until work is in compliance with contract requirements. All corrections and subsequent testing shall be done at no additional cost to the Government. The Contractor shall furnish water, electricity, instruments, connecting devices, and personnel for performing tests.

3.2.2.1 Water Piping Test Plan

Hydrostatically test piping systems in accordance with ASME B31.3. Vent or flush air from the piping system. Pressurize system for 10 minutes with water at one and one-half times design working pressure of the pump, then reduce to design working pressure and check for leaks and weeps.

Contractor shall submit a test plan for approval. No rupture, cracking or permanent distortion of any part of the pump shall be observed in a test when hydrostatically tested at the required pressure. The Contractor shall submit the following:

Water Piping Test Plan

3.3 WELD TESTING

Test unwatering and drainage pump discharge piping welds in accordance with the AWS D1.1/D1.1M utrasonic test (UT) method.

Discharge Piping Weld Test

-- End of Section --

SECTION 22 11 00.01 28 Page 7

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 24 19.00 28

MOTOR CONTROL CENTERS - LOW VOLTAGE

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SYSTEM DESCRIPTION

1.4 SUBMITTALS

1.5 DELIVERY, STORAGE, AND HANDLING

1.6 STANDARD PRODUCTS

1.6.1 Spare Parts

1.7 SEISMIC REQUIREMENTS

PART 2 PRODUCTS

2.1 MOTOR CONTROL CENTER

2.1.1 Enclosures

2.1.1.1 Unit Compartments

2.1.1.2 Motor Control Center Doors and Covers

2.1.2 Buses

2.1.2.1 Horizontal Bus

2.1.2.2 Vertical Bus

2.1.2.3 Ground Bus

2.1.3 Low Voltage Variable Frequency Drive

2.1.4 Molded Case Circuit Breakers in Unit Compartments

2.1.5 Panelboards for motor control center

2.1.6 Distribution Transformers

2.1.7 Power Quality Meters

2.2 PAINTING

2.3 FACTORY TESTS

2.3.1 Motor Control Center Tests

2.3.1.1 Dielectric Tests

2.3.1.2 Operational Tests

PART 3 EXECUTION

3.1 INSTALLATION

3.2 FIELD TESTING

SECTION 26 24 19.00 28 Page 1

SECTION 26 24 19.00 28

MOTOR CONTROL CENTERS - LOW VOLTAGE

PART 1 GENERAL

1.1 SCOPE

Contractor shall provide motor control center as specified herein and installed according to the Contract Plans and Specifications.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM B 187/B 187M (2006) Standard Specification for Copper, Bus Bar, Rod and Shapes and General Purpose Rod, Bar and Shapes

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C57.12.01 (2005) General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin-Encapsulated Windings

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA AB 1 (2002) Molded-Case Circuit Breakers, Molded Case Switches, and Circuit-Breaker Enclosures

NEMA ICS 1 (2000; R 2005; R 2008) Standard for Industrial Control and Systems: General Requirements

NEMA ICS 2 (2000; R 2005; Errata 2008) Standard for Controllers, Contactors, and Overload Relays Rated 600 V

NEMA PB 1 (2011) Panelboards

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2011; Errata 2 2012) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 489 (2009) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

SECTION 26 24 19.00 28 Page 2

UL 50 (2007; Reprint Apr 2012) Enclosures for Electrical Equipment, Non-environmental Considerations

UL 845 (2005; Reprint Jul 2011) Motor Control Centers

1.3 SYSTEM DESCRIPTION

These specifications include the design, fabrication, assembly, wiring, testing, delivery, installation and testing of the items of equipment and accessories and spare parts listed in the Schedule and shown on the drawings. The 480V CQ02 and CQ09 MCC's shall be provided to Lower Monumental Lock and dam. CQ02 is the power feed to Draingage pumps 1 and Drainage pump 2. CQ09 shall be the power source for Unwatering pump 3. The low voltage motor control centers shall be installed new on the current foot print for CQ02 and utilize existing conduit entrances into and out of the gear. All electrical connections and retained equipment from the removed CQ02 shall be reconnected to the respective breakers indicated in the installation drawings while utilizing the existing cables unless otherwise specified. CQ09 shall be new and installed as specified on the installation prints for CQ09. The MCC shall be compatible with VFD controls.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data;G,EL

Motor Control Center; G, EL

SD-06 Test Reports

Factory Tests;G, EL

SD-10 Operation and Maintenance Data,G,EL

Submit in accordance with Section 01 78 23.00 28 CLOSEOUT SUBMITTALS. Provide service and maintenance information including preventive maintenance, assembly, and disassembly procedures.

Include electrical drawings.

1.5 DELIVERY, STORAGE, AND HANDLING

a. The Contractor shall provide written notification to the Contracting Officer 14 calendar days prior to shipment of equipment.

b. The Motor Control Center (MCC) shall be shipped as completely assembled and wired as feasible. The MCC and any other equipment shall be wrapped suitably or otherwise protected from damage during shipment. All electrical material delivered to site shall, until

SECTION 26 24 19.00 28 Page 3 immediately prior to installation, be protected from damaging environmental and construction activities. The equipment shall be kept dry and free from precipitation and condensation during storage, installation, and after installation. All electrical equipment shall be stored in completely enclosed containers and in a humidity-controlled environment. Method of on-site storage and storage containers will be subject to approval by the Contracting Officer.

1.6 STANDARD PRODUCTS

Material and equipment shall be the standard products of manufacturers regularly engaged in the manufacture of these products and shall essentially duplicate items that have been in satisfactory use for at least two (2) years prior to bid opening. The motor control center shall be new, not used or refurbished.

1.6.1 Spare Parts

Contractor shall provide the following apare parts:

-One ALLEN BRADLEY PLC or standard equal PLC -One Network switch -One Red Lion meter or standard equal meter -480V VFD for Unwatering Pump 3 size 350Amps rated -480V VFD for Drainage pump 150 Amps rated -Motor protection relay 11/51 -4160V starter (Motor) -One 4160/120V control transformer -One spare 480V breaker installed in CQ02 breaker cubical 5D 200Amp rated -One spare 4160V breaker installed in CP0 cubical 2B 50Amp rated -One Flow meter -One Pressure transducer

1.7 SEISMIC REQUIREMENTS

Provide seismic bracing. The MCC shall be designed to withstand seismic forces in accordance with Specification Section 13 48 00.01 28 "SEISMIC

RESTRAINT FOR MECHANICAL AND ELECTRIC EQUIPMENT".

PART 2 PRODUCTS

2.1 MOTOR CONTROL CENTER

Motor Control Center shall conform to UL 845 and NFPA 70. The Motor Control Center shall be NEMA ICS 2, Class I, Type B, totally enclosed, free-standing, dead-front with two (2)500 amp HDL Main breakers (600A frame)including two (2) # 3/0- 350 kcmil terminations per phase.

2.1.1 Enclosures

The low voltage Motor Control Center shall have NEMA-12 Industrial enclosures. The motor control center shall consist of vertical sections of heavy gauge sheet steel bolted together to form a rigid self supporting assembly. The number of vertical sections shall be as shown on the plans.

The Motor Control Center shall not be more than 90 inches tall including a 9 inch horizontal wireways on top and at the bottom isolated from the busing via metal barrier. Each vertical section shall have 72 inches of vertical mounting height for starters, disconnects, etc. Each vertical

SECTION 26 24 19.00 28 Page 4 section shall not exceed 25 inches wide including an optional extended vertical wireway where practical, standard wireway shall be at least 4 inches wide, and extended wireway shall not exceed 9 inches wide. Each vertical section shall have factory provided lifting angles. motor control center shall not be more than 21 inches deep.

2.1.1.1 Unit Compartments

Each operating unit shall contain equipment as shown on the drawings, mounted in an individual cell. The unit assembly, except main circuit breakers, panelboards and auxiliary control devices, shall be drawout type removed from the front, without rear access or disturbing other units in the control center assembly. Drawout type unit assemblies shall have positive guide rail system to ensure alignment of connection to vertical bus. Units shall be mechanically interlocked with the door to prevent removal while in the energized position. A defeater shall be provided for qualified personnel to bypass the interlock. Each removable unit shall have provision for padlocking in a position in which it is disconnected from the vertical bus although not removed from the stationary structure.

Provide ventilating openings with corrosion-resistant insect-proof screens on the inside. Provide bus closing plugs for unused openings in vertical bus barrier.

Compartments for future combination motor-control units shall be complete with hardware, buses, and hinged doors ready to receive future draw-out units. Compartments for spare combination motor-control units shall be complete with buses, hinged doors, and draw-out units but without load terminal connections. Spare spaces shall be complete with buses and screwed-on front cover plates.

2.1.1.2 Motor Control Center Doors and Covers

Provide each unit compartment, including blank compartments for future use, with either a flange-formed or a rolled-edge door. Mount each door on fully-concealed or continuous full-length piano-type hinges and provide with positive fasteners. Prevent door sag by proper alignment of hinges made of sufficiently strong material. Interlock the door fastenings to prevent opening when the equipment is energized. The external operating handle shall clearly indicate whether the equipment is in an "ON", "OFF" or "TRIPPED" position.

2.1.2 Buses

Buses shall be of tinned copper and shall be tin or silver-plated throughout. Copper bars and shapes for bus conductors shall conform to the applicable requirements of ASTM B 187/B 187M . Splices for field assembly shall be bolted per manufacturer's instructions. The bus ratings shall be based on a 65 degree Celsius maximum temperature rise in accordance with UL 845 requirements. Buses shall be braced for 65 kAic. Support bus work on manufacturer's recommended insulators.

2.1.2.1 Horizontal Bus

Provide each control center assembly with a three-phase main horizontal bus, with a continuous current rating 800 amperes, located across the top of each vertical section.

SECTION 26 24 19.00 28 Page 5

2.1.2.2 Vertical Bus

Provide each vertical section with a three-phase vertical bus with a continuous current rating of 600 amperes connected to the horizontal bus.

The manufacturer's standard process, brazing, welding, or bolting are acceptable.

2.1.2.3 Ground Bus

Provide a tin-plated copper ground bus full width at the top of the motor control center line-up and shall be bonded to each vertical section.

Provide a full clamp-type solderless copper or copper alloy lug for No. 2/0 AWG stranded copper cable at each end of the bus for connection to the station grounding system. Ground bus shall be capable of carrying the rated short-circuit current available in the motor-control center.

2.1.3 Low Voltage Variable Frequency Drive

Low voltage motor variable frequency drive shall meet the requirements of Section 26 29 23.10 28.01 VARIABLE FREQUENCY DRIVE SYSTEMS.

2.1.4 Molded Case Circuit Breakers in Unit Compartments

Molded case circuit breakers shall conform to the applicable requirements of NEMA AB 1 and UL 489. Breakers shall be approved by MCC manufacturer for use in unit compartments and where possible shall be furnished as a unit.

Circuit breakers shall have interrupting rating of at least 22 kAIC.

Circuit breakers shall be thermal magnetic inverse time type, and shall have voltage and current ratings indicated on the schedules. Circuit breakers shall be pad lockable to accommodate lock out/tag out.

2.1.5 Panelboards for motor control center

Panelboards shall be furnished as part of the MCC and shall have copper busing, main circuit breaker, and available space for 18 branch breakers.

Breakers shall be bolt on type and shall have a minimum of 22 kAic rating.

Panelboards shall be UL 50 compliance and NEMA PB 1 compliance.

2.1.6 Distribution Transformers

Dry type transformers for power and lighting loads shall be furnished with voltage and kVA ratings as indicated on the drawings. The transformers shall conform to the requirements for general-purpose transformers in IEEE C57.12.01 and shall be rated for 150 degree C rise. Protect each transformer on the primary side with a molded case circuit breaker as indicated on the drawings. Transformers shall be drawout type and shall be furnished as part of the MCC. Control transfromer shall be 480/120V.

2.1.7 Power Quality Meters

Power quality meters shall be furnished on the MCC main breakers and provide 3 phase Voltage (line to line, line to neutral), 3 phase current & per phase current, power factor both per phase & 3 phase, frequency, up 63rd order harmonics and have a Watt Hour meter. The power quality meters shall has the capability of data logging and provide line/feeder quality.

The meters shall be selected for the rated three phase voltage of CQ02 and except inputs from current transformers. The meters shall be compliant with ANSI C12.1, C12.20 Accuracy and be UL listed.

SECTION 26 24 19.00 28 Page 6

2.2 PAINTING

Motor Control Center shall be painted per manufacturer's standard. Paint shall be quick air-drying synthetic enamel with semi-gloss finish, ANSI No.

61 Light Gray. Lead-based paints shall not be used.

2.3 FACTORY TESTS

Each item of equipment supplied under this contract shall be given the manufacturer's routine factory tests to insure successful operation of the assembly components. The contractor shall submit a certified factory test report to the Contracting Officer prior to shipping the MCC to the project site.

2.3.1 Motor Control Center Tests

2.3.1.1 Dielectric Tests

Each motor control center shall be completely assembled tested in accordance with NEMA ICS 1.

2.3.1.2 Operational Tests

The correctness of operation of each circuit breaker and starter and of control devices, accessories and indicating lamps, shall be checked. These checks shall be made at rated voltage with power supplies to the main buses.

PART 3 EXECUTION

3.1 INSTALLATION

Complete assembly shall be electrically and mechanically connected and assembled from coordinated subassemblies shipped in complete sections from the manufacturer. Installation shall be aligned, leveled, and secured to the supporting construction in accordance with the manufacturer's recommendations.

3.2 FIELD TESTING

Motor-control centers shall be subjected to continuity and insulation tests after the installation has been completed and before the motor-control center is energized.

Provide test equipment, labor, and personnel to perform the tests required.

Motor-control centers shall be completely isolated from extraneous electrical connections. Substation feeder breakers, circuit breakers in switchboards, and other disconnecting devices shall be used to isolate the motor-control center under test.

Conduct insulation tests on motor-control centers 480 volts or less using a 500-volt insulation-resistance test set. Record readings every 15 seconds for the first minute and every minute thereafter for 10 minutes.

Resistance between phase conductors and ground shall be not less than 25 megohms.

Conduct phase-rotation tests on three-phase circuits using a phase-rotation

SECTION 26 24 19.00 28 Page 7 indicating instrument. Phase rotation of electrical connections to motors and other connected equipment shall be clockwise. Contractor shall label the phases.

Record test data and include location and identification of motor-control centers and megohm readings versus time.

Final acceptance shall depend upon the satisfactory performance of the motor-control centers under test. No motor-control center shall be energized until recorded test data have been approved by the Contracting Officer. Provide final test reports to the Contracting Officer.

-- End of Section --

SECTION 26 24 19.00 28 Page 8

SECTION TABLE OF CONTENTS

DIVISION 43 - PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND STORAGE

EQUIPMENT

SECTION 43 21 39.01 28.01 28

PUMPS: WATER, VERTICAL TURBINE

PART 1 GENERAL

1.1 REFERENCES

1.2 GENERAL REQUIREMENTS

1.2.1 Standard Products

1.2.2 Nameplates

1.2.3 Verification of Dimensions

1.3 SUBMITTALS

1.4 DELIVERY AND STORAGE

1.5 SPARE PARTS

PART 2 PRODUCTS

2.1 PUMP AND DRIVER REQUIREMENTS

2.1.1 Type of Installation

2.1.2 Sump Data

2.2 PUMP PERFORMANCE

2.2.1 Pumps

2.3 LINE SHAFT VERTICAL TURBINE PUMPS

2.3.1 Pump Head Assembly

2.3.1.1 Pump Baseplate

2.3.1.2 Discharge Head

2.3.2 Pump Bowl Assembly

2.3.2.1 Pump Bowls

2.3.2.2 Impellers

2.3.2.3 Pump Shafts

2.3.2.4 Pump Shaft Couplings

2.3.2.5 Pump Shaft Bearings

2.3.3 Suction Strainer

2.3.4 Discharge Column Pipe

2.4 PUMP ACCESSORIES

2.4.1 Pump Air Valve

2.5 ELECTRICAL EQUIPMENT

2.5.1 General

2.5.2 Electric Motors

2.5.3 Control Equipment

2.6 EQUIPMENT APPURTENANCES

2.6.1 Attachments

2.6.2 Equipment Guards

2.6.3 Special Tools

2.6.4 Shop Painting

PART 3 EXECUTION

3.1 SITE CONDITIONS INSPECTIONS

SECTION 43 21 39.01 28 Page 1

3.2 PAINTING AND FINISHING

3.3 FACTORY TEST

3.3.1 Factory Test Reports

3.3.2 Factory Pump Test

SECTION 43 21 39.01 28 Page 2

SECTION 43 21 39.01 28.01 28

PUMPS: WATER, VERTICAL TURBINE

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN BEARING MANUFACTURERS ASSOCIATION (ABMA)

ABMA 9 (1990; R 2008) Load Ratings and Fatigue Life for Ball Bearings

AMERICAN WATER WORKS ASSOCIATION(AWWA)

AWWA E103 (2008) Horizontal and Vertical Line-Shaft Pumps

ASME INTERNATIONAL (ASME)

ASME B1.1 (2003; R 2008) Unified Inch Screw Threads (UN and UNR Thread Form)

ASME B16.1 (1998) Cast Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250

ASME B16.5 (2003) Pipe Flanges and Flanged Fittings

ASTM INTERNATIONAL (ASTM)

ASTM A 123/A 123M (2002) Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A 153/A 153M (2005) Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A 307 (2004) Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

AMERICAN WATER WORKS ASSOCIATION(AWWA)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 1940-1 (2003; Cor 2005) Mechanical Vibration - Balance Quality Requirements for Rotors in a Constant (Rigid) State - Part 1:

Specification and Verification of Balance

SECTION 43 21 39.01 28 Page 3

1.2 GENERAL REQUIREMENTS

1.2.1 Standard Products

Material and equipment shall be the standard products of a manufacturer regularly engaged in the manufacture of the products and shall essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening. Equipment shall be supported by a service organization that is, in the opinion of the Contracting Officer, reasonably convenient to the site. Pumps of the same type shall be the product of one manufacturer.

1.2.2 Nameplates

Each major item of equipment shall have the manufacturer's name, address, type or style, model, serial number, and catalog number on a plate secured to the item of equipment. In addition, the nameplate for each pump shall show the capacity in gpm at rated head in feet and speed in revolutions per minute. An arrow indicating the direction of pump rotation shall be cast into the pump casing. A corrosion resistant metal nameplate bearing the arrows shall be fastened to the pump casting.

1.2.3 Verification of Dimensions

The Contractor shall become familiar with all details of the work, verify all dimensions in the field and shall advise the Contracting Officer of any discrepancy before performing the work.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Verification of Site Conditions Report; G, C

Provide Verification of Site Conditions Report, state the date the site was visited and a listing of all discrepancies found or indicating that no discrepancies were found. Include any discrepancies noted with proposed solutions or include a request for information necessary to remedy the discrepancies.

SD-03 Product Data

Unwatering Pumps; I, ME

Drainage Pumps; I, ME

Manufacturer's descriptive data and technical literature, performance charts and curves, catalog cuts, and installation instructions.

Spare Parts; I, ME

SECTION 43 21 39.01 28 Page 4

Spare parts data for each different item of material and equipment specified. Spare parts shall include the spare pump units as shown on the contract drawings.

Long Term Storage Packaging; G, ME

Spare pump units shall be provided in packaging suitable for long term storage as required by the manufacturer. All components shall be packaged such that they are protected from humidity and any other damage. All equipment shall be placed in wooden crates mounted on skids. Miscellaneous components shall be boxed, labeled and included with their respective spare pump unit.

SD-06 Test Reports

Factory Test Reports; G, ME

Test reports in booklet form showing all factory tests performed to prove compliance with the specified performance criteria.

SD-10 Operation and Maintenance Data

Submit operating data for each Drainage and Unwatering pump outlining the step-by-step procedures required for system startup, operation and shutdown. The data shall include the manufacturer's name, model number, service manual, parts list, and brief description of all equipment and their basic operating features.

Submit maintenance data listing routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guides. The data shall include simplified wiring, layout, and control diagrams of the system as installed. Submit data in accordance with specification section 01 78 23.00 28 OPERATION AND MAINTANCE DATA.

1.4 DELIVERY AND STORAGE

All equipment delivered and placed in storage shall be stored with protection from the weather, humidity and temperature variations, dirt and dust, or other contaminants.

1.5 SPARE PARTS

The Contractor shall submit data for each Spare Parts after approval of the shop drawings and not later than 1 month prior to the date of occupancy.

Data shall include a complete list of parts and supplies, with current unit prices and source of supply, and a list of the parts recommended by the manufacturer to be replaced after 3 years of service. Data shall include the required spare part units as shown on the contract drawings. Spare part units shall be provided in Long Term Storage Packaging.

SECTION 43 21 39.01 28 Page 5

PART 2 PRODUCTS

2.1 PUMP AND DRIVER REQUIREMENTS

2.1.1 Type of Installation

The work shall include furnishing, installing, and testing line shaft Unwatering Pumps and Drainage Pumps including their appurtenances as indicated. Pumps shall be Vertical Turbine Pumping Units suitable to pump water from a sump. Line shaft lubrication shall be water based.

2.1.2 Sump Data

Pumps shall be suitable for installation above their respective sump and under the conditions indicated.

2.2 PUMP PERFORMANCE

Pumps shall be capable of discharging quantities of water at maximum pump speed and total pump head with the minimum efficiency indicated. Total pump head in feet shall consist of the pumping level below datum and the static and friction head above datum at design capacity. Additional operating conditions to be met are indicated.

2.2.1 Pumps

The Drainage Pumps primary design point shall be 2500 gpm at 103 feet of head while rotating at 1770 rpm with a minimum pump efficiency of 82 percent. With the aid of a variable frequency drive both pumps shall be able to pump 2000 gpm at 103 feet of head while rotating at 1600 rpm with a minimum pump efficiency of 85 percent. Be able to pump 1500 gpm at 88 feet of head while rotating at 1400 rpm with a minimum pump efficiency of 80 percent. The Drainage Pumps shall not require a drive larger than 100 horsepower.

The Unwatering Pumps 1 and 2 primary design point shall be 7500 gpm at 130 feet of head while rotating at 1180 rpm with a minimum pump efficiency of 85 percent. Both pumps shall be able to pump 7100 gpm at 140 feet of head while rotating at 1180 rpm with a minimum pump efficiency of 85 percent. Be able to pump 7800 gpm at 120 feet of head while rotating at 1180 rpm with a minimum pump efficiency of 83 percent. The Unwatering Pumps 1 and 2 shall not require a drive larger than 300 horsepower.

The Unwatering Pump 3 or Safety Pool Pumps primary design point shall be 6000 gpm at 77 feet of head while rotating at 1770 rpm with a minimum pump efficiency of 85 percent. With the aid of a variable frequency drive the pump shall be able to pump 8000 gpm at 79 feet of head while rotating at 2000 rpm with a minimum pump efficiency of 81 percent. Be able to pump 4000 gpm at 72 feet of head while rotating at 1600 rpm with a minimum pump efficiency of 73 percent. The Unwatering Pump 3 shall not require a drive larger than 200 horsepower.

2.3 LINE SHAFT VERTICAL TURBINE PUMPS

Both unwatering and drainage pumps to be provided shall be line shaft vertical turbine type and shall be constructed in accordance with AWWA E103 standards except as modified. Pumps shall be designed for flanged discharge and the pump setting or location of the pump suction shall be as indicated.

The lower end of the suction pipe shall be equipped with a strainer.

SECTION 43 21 39.01 28 Page 6

G4EDDMTJ

Sticky Note Marked set by G4EDDMTJ

Strainer shall be as recommended by the pump manufacturer.

2.3.1 Pump Head Assembly

Pump head assembly shall consist of the pump baseplate, the discharge head, and the driver. Head assemblies shall be of low, rigid construction arranged for bolting to concrete foundations and shall be provided with at least two eyebolts, cast lugs or other means of securing slings to facilitate setting and lifting. Pump discharge head and baseplate shall be capable of withstanding all end and side thrusts imposed by the pump during operation and have adequate strength to resist vibration at any operating speed.

2.3.1.1 Pump Baseplate

Pump head baseplate shall be cast-iron or steel and shall serve as a sole plate for mounting the discharge head assembly.

2.3.1.2 Discharge Head

Discharge head flanges shall be designed for standard pipe connections conforming to ASME B16.1 and ASME B16.5. Below deck type discharge heads shall be designed for mounting on the baseplate or cast integrally with the baseplate. Discharge head shall be provided with a packed stuffing box with bronze lantern ring, a split gland follower, bronze follower nuts, and water lubrication. A lip to collect leakage from the stuffing box shall be provided with drilled and tapped connection for drainage pipe. Discharge head shall be designed to prevent contamination of the sump from the surface, and shall accommodate the required driver assembly. Space shall be provided for access to the coupling between the pump shaft and drive shaft.

Pipe taps shall be provided on the discharge head for prelubrication and discharge pressure gauge connections. The discharge head shall be designed to support and align the driver, bowl assembly, shaft, column pipe, and suction strainer. The discharge head shall redirect the vertical flow to a horizontal direction and as a minimum contain a stuffing box and packing to seal around the drive shaft to prevent pumped water from entering the driver assembly.

2.3.2 Pump Bowl Assembly

Pump bowl assembly shall include the pump bowl, pump impeller, suction strainer, pump shaft and bearings and may be of single stage or multistage configuration.

2.3.2.1 Pump Bowls

Bowls shall be of close-grained cast-iron and shall have integrally-cast vanes with smooth, streamlined water passageways. The pump bowls shall be lined with porcelain enamel or epoxy coating. Suction bowl shall contain a bronze bearing permanently packed with nonsoluble grease and fitted with a sand collar to serve as the bottom bearing of the pump shaft. The discharge bowl shall have a seal to minimize the leakage of water into the shaft enclosing tube and shall have bypass ports of sufficient area to permit the escape of water which may leak through the seal or bushing. Casing wearing rings of bronze shall be installed for pumps with enclosed impellers.

2.3.2.2 Impellers

Impellers shall be carefully finished with smooth water passageways and

SECTION 43 21 39.01 28 Page 7 shall not load the prime mover beyond the nameplate rating over the entire performance range of the pump. Impellers shall be securely attached in an axial direction to the pump shaft. No impeller shall contact the bowl under operating conditions. A suitable adjustable mechanism to achieve the proper axial position of the impeller with respect to the bowl shall be provided.

Impellers shall be of the enclosed type and shall be constructed of bronze. Impellers shall be securely fastened by left-hand threaded nut or other suitable method to prevent the impeller from loosening from the impeller shaft. Impellers shall be keyed and/or set-screwed to prevent rotation in relation to the shaft. Stainless steel wear rings shall be installed on enclosed impellers. Impellers shall be statically and dynamically balanced per ISO 1940-1, balance grade quality grade G6.3, or equivalent.

2.3.2.3 Pump Shafts

Shafts shall be of 316 or 416 stainless steel capable of transmitting the required thrust in either direction and the total torque of the unit encountered during start up as well as during operation. Shaft shall be designed to support the impeller and be provided with renewable shaft sleeves at the bearing surfaces in order to protect it against wear, erosion and corrosion. Shaft sleeves shall be of a hard bronze or other corrosion resistant material.

2.3.2.4 Pump Shaft Couplings

Line shaft sections shall be connected by threaded couplings or keyway couplings, composed of material similar or superior to those of the line shafts. Coupling threads shall not be tapered and shall tighten during pump operation.

2.3.2.5 Pump Shaft Bearings

Packing box bearing shall be of a split gland design and use synthetic Garlock 8913 packing rings or approved equal and be water lubricated.

Intermediate bearings shall be water lubricated fluted rubber. Pumps shall have a water pre-lube system to prevent dry startup of bearings.

Bearings shall be designed so that they are lubricated by the water in the discharge column pipe as the pump is in operation. Top bowl bearing shall be provided with sand collar to prevent intrusion of abrasive particles.

Bearings shall be spaced no more than 10 feet apart and be designed so that the shaft is properly centered within the discharge pipe column. All bearings shall be designed for a minimum life of 100,000 hours under maximum applied load and maximum allowable misalignment in accordance with

ABMA 9.

2.3.3 Suction Strainer

Suction strainer shall be fabricated from 304L or 316L stainless steel.

2.3.4 Discharge Column Pipe

Column pipe shall be of adequate size and strength to withstand the forces and stresses imposed during all pump operation conditions. To facilitate maintenance and repair, column piping is to be supplied interchangeable lengths not exceeding 10 feet and coordinated with the line shaft bearing spacings. Column pipe connections shall provide accurate alignment and adequate water tightness. All discharge column pipe connections shall be flanged.

SECTION 43 21 39.01 28 Page 8

2.4 PUMP ACCESSORIES

2.4.1 Pump Air Valve

Vertical turbine pump air valve shall be able to vent large quantities of air thru an orifice when the pump starts and close tight when liquid enters and permit large quantities of air to re-enter thru the orifice when the pump stops to prevent a vacuum from forming in the pump suction column. The main valve parts of the valve shall be shielded from direct impact of water by a baffle. The float shall be stainless steel and be center guided. The discharge orifice shall have a double acting throttling valve which can restrict air from venting to establish a pressure loading on the pump, and automatically fully open to allow unrestricted air entry to prevent the formation of a vacuum. The valve shall also be fitted with an air release valve which allow small quantities of air to escape during pump operation.

The valve shall be designed for the intended purpose and for use with vertical turbine pumps. The valve body shall be made of cast iron. The valve shall be sized to match the pump requirements.

2.5 ELECTRICAL EQUIPMENT

2.5.1 General

Electrical motor-driven equipment specified shall be provided complete with motors, motor starters, and controls. Motor controls, equipment and wiring shall be as specified in Section 26 05 00.00 28 GENERAL ELECTRICAL WORK.

2.5.2 Electric Motors

For additional motor requirements see specification section 26 29 01.00 28

ELECTRIC MOTORS, 3-PHASE VERTICAL INDUCTION TYPE.

2.5.3 Control Equipment

For additional control requirements see specification section

26 24 19.00 28 MOTOR CONTROL CENTERS-LOW VOLTAGE.

2.6 EQUIPMENT APPURTENANCES

2.6.1 Attachments

All necessary bolts, nuts, washers, bolt sleeves, and other types of attachments for the installation of the equipment shall be furnished with the equipment. Bolts shall conform to the requirements of ASTM A 307 and nuts shall be hexagonal of the same quality as the bolts used. Threads shall be clean-cut and shall conform to ASME B1.1. Bolts, nuts, and washers specified to be galvanized or not otherwise indicated or specified, shall be zinc coated after being threaded, by the hot-dip process conforming to ASTM A 123/A 123M or ASTM A 153/A 153M as appropriate. Bolts, nuts, and washers specified or indicated to be stainless steel shall be Type 316.

Where stainless steel is attached to dissimilar metals insulating washers or insulate bolts shall be used to limit galvanic action.

2.6.2 Equipment Guards

Equipment driven by open shafts, belts, chains, or gears shall be provided with all-metal guards enclosing the drive mechanism. Guards shall be constructed of galvanized sheet steel or galvanized woven wire or expanded

SECTION 43 21 39.01 28 Page 9 metal set in a frame of galvanized steel members. Guards shall be secured in position by steel braces or straps which will permit easy removal for servicing the equipment. The guards shall conform in all respects to all applicable safety codes and regulations.

2.6.3 Special Tools

A complete set of all special tools which may be necessary for the adjustment, operation, maintenance, and disassembly of all equipment shall be furnished.