21._Attachment_A_Specifications.pdf

Attachment A

115-KV SHERIDAN HILL TAP

Replacement- Specifications 01/14/2015

DE- SOL-0007881

SECTION C

DESCRIPTION/SPECIFICATIONS

Specification Number 836

COLORADO

SECTION C

DESCRIPTION/SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT

B. DESCRIPTION OF WORK

C. DESCRIPTION OF BID ITEM

1. Bidding Schedule item “Mobilization and preparatory work”

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK

1. Commencement and Completion

2. Submittal Approval Time

3. Outage and Construction Schedule Restrictions

4. Maximum Available Fault Current

E. CONSTRUCTION PROGRAM

1. Submittal Time

2. Format and Detail

F. MATERIAL

G. RIGHTS-OF-WAY

1. General

2. Access Easements

3. Work on the Right-of-Way

H. GEOLOGIC INVESTIGATIONS

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES

J. WATER FOR CONSTRUCTION PURPOSES

K. EXPLOSIVES AND BLASTING

L. SUBMITTALS

1. General

2. Hard Copy Submittal Exception

3. Approval Time

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BID ITEMS

1. Bidding Schedule item “Removing existing single-circuit 115-kV wood transmission line structure 12/7”

2. Bidding Schedule does not contain separate items

DIVISION 3 – CONCRETE

A. GENERAL

1. Material

2. Test for Potential Reactivity of Sand and Coarse Aggregate

B. DESCRIPTION OF BID ITEMS

1. Bidding Schedule item “Concrete foundations”

DIVISION 4 – SUBSTATION METALWORK

A. GENERAL

1. Government-Furnished Drawings

2. Measurement

B. DESCRIPTION OF BID ITEMS

1. Bidding Schedule item “Steel structures, welded (galvanized)”

DIVISION 9 – SUBSTATION - ELECTRICAL

A. GENERAL

1. Bidding Schedule items

B. DESCRIPTION OF BID ITEMS

1. Bidding Schedule items “Disconnecting switch, 115-kV, 1,200 amps” and “Disconnecting switch, 115-kV, 1,200 amps, with vacuum bottles mounted”

2. Bidding Schedule items “Associated and miscellaneous equipment and material”

DIVISION 10 – TRANSMISSION LINE ELECTRICAL

A. DESCRIPTION OF BID ITEMS

1. Bidding Schedule item for “Approach spans”

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

A. GENERAL

1. General Requirements

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENT:

Construct and complete new 115-kV Sheridan Hill Tap in accordance with the Construction Contract (Standard Form 1442); the Contract Clauses; Western Construction Standards, including Standard 1

– General Requirements (September 2013), Standard 2 – Sitework (September 2013), Standard 3 – Concrete (September 2013), Standard 4 – Substation Metalwork and Transmission Line Lattice Structures (September 2013), Standard 9 – Substation – Electrical (September 2013), Standard 10 – Transmission Line – Electrical (September 2013), Standard 13 – Environmental Quality Protection (September 2013), Standard 15 Drawings (September 2013); standard drawings; and these project specifications and drawings.

If a conflict occurs between the project specifications and the construction standards, the project specifications shall govern. The project specifications and the drawings are used to take exceptions or provide additions to the standard specifications. Some paragraphs in the standard specifications will not apply to this job.

Western’s construction standards, standard drawings, and electrical equipment standards are available at http://ww2.wapa.gov/sites/western/business/selling/Pages/buys.aspx.

Western project specifications and standards are explained in Standard 1 – General Requirements, Section 1.1.1 “Standards and Project Specifications”.

B. DESCRIPTION OF WORK:

The principal components of work include removing one (1) wood H-frame structure, furnishing and installing one (1) new 115-kV 3-way steel tap structure, 115-kV disconnecting switches, associated electrical equipment, approach spans, and grounding system.

Paragraphs “Description of Bid Items” in Divisions – 1, 2, 3, 4, 9, 10, and 13 describe the work to be performed.

The work is located in Yuma County, CO as shown on location map SRH 0015.

C. DESCRIPTION OF BID ITEM:

1. Bidding Schedule item “Mobilization and preparatory work” includes the following:

a. Performing mobilization and preparatory work in accordance with Section H of the contract clauses.

b. Providing a Construction Program and a Safety and Health Program.

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK:

1. COMMENCEMENT AND COMPLETION: Begin work within 30-calendar days after date of receipt of Notice to Proceed, and complete all work within 140-calendar days from date of receipt of such notice.

2. SUBMITTAL APPROVAL TIME: Except as otherwise provided for specific submittals, Western will require 20-calendar days for review of drawings or data submitted for approval.

3. OUTAGE AND CONSTRUCTION SCHEDULE RESTRICTIONS: In addition to the restrictions listed in the standard specifications, the following outage and construction schedule restrictions shall apply:

a. One (1) 3-week outage on the Frenchman Creek – Wauneta 115-kV transmission line will be given to the Contractor to complete all work requirements in this contract.

4. MAXIMUM AVAILABLE FAULT CURRENT: When protective ground leads are required, the protective ground leads shall be sized as defined below and shall meet the requirements of Standard 1 – General Requirements, Section 1.4 “Safety and Health” and the following:

a. The maximum available fault current in the area is 3,409 amps and the X/R ratio is 3.6.

b. A minimum of one (1) 1/0 ground shall be used in this area.

c. No protective ground lead shall be longer than 36-feet in length, unless approved by the

Contracting Office Representative (COR). Resistance values given in Personal Protective Grounds Test Report shall be less than or equal to those allowed in ASTM F 2249.

E. CONSTRUCTION PROGRAM:

1. SUBMITTAL TIME: Submit a construction program to the COR within 45-calendar days after date of Notice to Proceed.

2. FORMAT AND DETAIL: Dates for each item of Government-furnished material shall be provided. Do not program dates earlier than the estimated delivery dates shown in the “Material” paragraph.

F. MATERIAL: Furnish all material for completing the work.

G. RIGHTS-OF-WAY:

1. GENERAL: Typical transmission line right-of-way for 115-kV transmission lines is 75-feet-wide.

Western does not represent that the Contractor can gain access to every structure site or travel continuously along the transmission line. Orient construction methods and equipment to utilize Government-furnished rights-of-way or obtain additional temporary access without additional cost to Western. Any additional temporary access acquired by the Contractor shall have prior COR approval since several areas of the transmission line have travel restricted areas. During the contract period, Western reserves the right to use Contractor-obtained access.

2. ACCESS EASEMENTS: Western has acquired access easements from existing public roads to the transmission line and some off right-of-way (ROW) access along the transmission line.

This off ROW access route is to provide access to the transmission line structure sites not accessible by traveling the transmission line.

3. WORK ON THE RIGHT-OF-WAY:

a. General: Perform work on the ROW necessary for access to or along the transmission line. Only that excavation, dozing, or blading that is absolutely necessary will be allowed.

Excavation, dozing, and blading for ease of travel may only be performed after field review and approval by the COR. Unauthorized excavation, dozing, or blading shall immediately be repaired or Western will have the damage repaired and back-charge the Contractor for all costs involved.

b. Ease of Travel and Crane Landings: Excavation, dozing, or blading done for ease of travel on any easement or for crane landings shall be restored to the original contour of the land and shall be compacted to a dry density not less than the natural in-place dry density of the surrounding earth. The use of water may be required to obtain the required density. Topsoil shall be stockpiled and spread on cuts prior to completion of work.

H. GEOLOGIC INVESTIGATIONS:

Geologic information has not been obtained for this project and none is known to exist. The Contractor shall determine the nature of material to be excavated, the difficulties of making and maintaining required excavations, and doing other work affected by geology and ground water elevations at the worksite.

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES:

Make arrangements and provide all electric power for construction purposes. Provide necessary transmission lines, distribution circuits, transformers, and other electrical equipment for distributing the power to the places of use. At contract completion, remove temporary electrical equipment and distribution lines.

J. WATER FOR CONSTRUCTION PURPOSES:

Furnish water for construction purposes. Make arrangements for obtaining the water, and provide for conveying the water to the points of use.

K. EXPLOSIVES AND BLASTING:

Explosives shall not be used.

L. SUBMITTALS:

1. GENERAL: The Contractor shall furnish submittals via email as specified in the Construction Standards and this Project Specification. Submittals via email shall be in standard PDF or Electronic CAD “*.dwg” (AutoCAD 2010) formats. All submittals shall include the Western contract number (DE-WA000XXXX), Western project title, and Bidding Schedule Contract Line Item Number (CLIN) and applicable division number. Multiple CLIN’s on a single submittal are not permitted. A cover transmittal letter in Microsoft Word or PDF format shall be included with each email. Email submittals shall be delivered to: RMR-J5600-CS@wapa.gov.

2. SUBMITTAL RESPONSE: Western will return all submittals electronically with an “Approved” or “Not Approved” status with comments as appropriate to the email address where the submittal originated.

3. APPROVAL TIME: Approval time for submittals shall be in accordance with the

"Commencement, Prosecution, and Completion of Work" paragraph.

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BID ITEMS:

1. Bidding Schedule item “Removing existing single-circuit 115-kV wood transmission line structure 12/7” includes the following:

a. Removing wood pole structure number 12/7 complete with insulators, insulator assemblies and overhead ground wire assemblies. Location described by station is on the Existing Installation Drawing FRC-WAN 4013. Items removed from the existing line shall become the property of the Contractor and shall be removed promptly from the ROW, and may not be reused in constructing the new line. Reuse of conductor/wire shall be in accordance with Westerns construction standards and any restrictions listed in Division 13.

2. Bidding Schedule does not contain separate items for the following. Include these items in applicable Bidding Schedule items.

a. Clearing

b. Excavations for foundations and structures.

c. Leveling ground for switch platforms.

d. Placing and compacting earth material and backfill.

e. Seeding any disturbed areas

f. Disposing of excavated material. Unless otherwise directed by the COR, material shall not be wasted in drainage channels. Material from excavations not suitable or required for earthwork shall be removed from the tap site and access road ROW. The Contractor shall make arrangements required for disposal of waste material.

DIVISION 3 – CONCRETE

A. GENERAL:

1. MATERIAL:

a. Cement: Type IIA cement.

b. Compressive Strength: 4000 psi at 28-days for concrete.

c. Water-Cement Ratio: Net water-cement ratio, exclusive of water absorbed by the aggregates, shall not exceed 0.45 by weight.

d. Type A and D water-reducing and retarding admixtures may be used if approved by the

COR.

2. TEST FOR POTENTIAL REACTIVITY OF SAND AND COARSE AGGREGATE: Perform test for each source used.

B. DESCRIPTION OF BID ITEMS:

1. Bidding Schedule item “Concrete foundations” includes the following:

a. Earthwork, formwork, reinforcement, material used in concrete, void forming material, drilling and grouting anchor bars, galvanized anchor bolts, curing, finishing, joints, and other related work and material needed to complete the concrete construction.

b. Concrete foundations for 115-kV 3-way box structure as shown on Drawing SRH 2300.

c. Unwatering foundation excavations, if required.

d. Casing auger excavations, if required.

e. The site for the 115-kV 3-way box structure has been surveyed to determine ground elevations as shown on Drawing SRH 0016. The Top of Concrete elevation shall be set at 3742-feet. All four (4) tap structure foundations shall have the same elevation.

Measurement for quantities for concrete foundations will be made on the basis of concrete quantities shown on Drawing SRH 2300. Regardless of the concrete quantities actually placed, payment will be based on the quantities of concrete shown on the Drawing.

DIVISION 4 – SUBSTATION METALWORK

1. GOVERNMENT-FURNISHED DRAWINGS: Existing shop drawings for steel structures are not available.

2. MEASUREMENT: Measurement for quantities for Bidding Schedule item “Steel structures, welded (galvanized)” will be made on the basis of weights calculated in accordance with LRFD, “AISC Code of Standard Practice for Steel Buildings and Bridges”, except that weights for nonrectangular shapes and plates are to be based on actual detailed dimensions.

a. Steel structure weights, calculated as noted above, shall be shown on the

Contractor-furnished final shop drawings, and payment will be based thereon. Steel estimated weights are shown on the specifications drawings for the structures requiring approval drawings as noted in the Bidding Schedule items “Steel structures, welded (galvanized)”.

1. Bidding Schedule item “Steel structures, welded (galvanized)” includes furnishing and installing the following materials:

a. One (1) 115-kV 3-way box structures in accordance with Drawings SRH 2600, SRH 2601, and SRH 2602. The Contractor shall coordinate the mounting details for the switches, switch operating system, and steel switch platforms with the switch manufacturer.

b. Three (3) Type I single-switch operating platforms, including grating in accordance with

Drawing SRH 2925.

The above material including connection bolts, nuts, washers, and lock nuts shall be galvanized.

All structures listed above shall require approval drawings.

DIVISION 9 – SUBSTATION - ELECTRICAL

A. GENERAL: Electrical equipment and material shall be as specified in Western’s “WAPA ES”

Standard Equipment Specifications, as shown on project drawings, and in accordance with NEMA, ANSI, IEEE, ICEA, ASTM, NEC, NESC, UL, and Federal specifications and standards as applicable.

Applicable requirements shall be met under the following service conditions:

Ambient Temperatures:

Maximum ........................................................................................... +40°C Maximum 24-Hour Average .............................................................. +30°C Minimum ............................................................................................. -30°C

Elevation:

Above Mean Sea Level ............................................................... 3740-Feet

ASCE-7 Wind Load:

Minimum Basic Wind Speed .......................................................... 90 MPH Importance Factor ................................................................................ 1.15

1. Bidding Schedule items shall include the following:

a. Providing (furnishing and installing) bid items.

b. Furnishing equipment and material not furnished by Western.

c. Installing bid items as shown on drawings.

Installation and painting of electrical equipment and material shall be provided in accordance with Standards 9 and 12 respectively.

1. Bidding Schedule items “Disconnecting switch, 115-kV, 1,200 amps” and “Disconnecting switch, 115-kV, 1,200 amps, with vacuum bottles mounted” includes providing switches in accordance with WAPA ES 8.1 Equipment Standard.

DESIGNATION 1361, 1363 1365

Type

3-pole, worm gear, outdoor, group operated, vertical break, rotating insulator

3-pole, worm gear, outdoor, group operated, vertical break, rotating insulator

System Nominal Voltage Rating (kV) 115 115

Rated Maximum Voltage (kV) 121 121

Basic Impulse Insulation Level (kV) 550 550

Continuous Current Rating (Amps) 1,200 1,200

DESIGNATION 1361, 1363 1365

Momentary Current Rating (kA) 61 61

Grounding Blades No No

Phase Spacing 10’-0” 10’-0”

Mounting Position Horizontal upright Horizontal upright

Insulator Technical Reference No. 286 286

Vacuum Bottles Yes No

2. Bidding Schedule items “Associated and miscellaneous equipment and material” includes providing equipment, material, and services required to complete the following tap installations as shown on the drawings:

a. Grounding system and testing grounding system.

b. Outdoor strain and jumper buses and overhead ground wire. Insulators for strain bus shall be same color and material as t-line insulator assemblies.

c. Signs:

(1) Phase-Identification Signs (31 1000):

(a) Phase A – 3 required.

(b) Phase B – 3 required.

(c) Phase C – 3 required.

d. Equipment Identification Signs (31 1000) – Total required – 3. Lettering on the signs shall be as follows:

(1) SHERIDAN HILL TAP

SRH 1361

LINE SW 115 KV

(2) SHERIDAN HILL TAP

SRH 1363

LINE SW 115 KV

(3) SHERIDAN HILL TAP

SRH 1365

TAP SW 115 KV

DIVISION 10 – TRANSMISSION LINE ELECTRICAL

A. DESCRIPTION OF BID ITEMS:

1. Bidding Schedule item for “Approach spans” includes:

a. Furnishing material and performing work and tests to provide insulator assemblies shown on Drawing 41 1022. An estimate of material quantities for each type of structure is shown in table below.

b. Furnishing material and performing work and tests to provide overhead ground wire assemblies shown on Drawing 41 1018. An estimate of material quantities for each type of structure is shown in table below.

CONDUCTOR

INSULATOR

ASSEMBLY

OGW

ASSEMBLY

Structure Type

10 Units T11-B

ANSI Class 52-5 Toughened Glass

30,000 lbs

DWG 41 1022

Tension

OGW-TV

20,000 lbs

DWG 41 1018

115-kV 3-Way Tap Structure

6 4

c. Stringing, splicing, repairing, sagging, and clipping in the conductors; installing jumper loops; and installing material to complete the conductor installations. Furnish and install material including conductor joints, conductor repair sleeves, and joint inhibitor compound required to complete conductor installation.

(1) Restring and reattach the existing 477 KCMIL ACSR “Flicker” conductor on the

Frenchman Creek - Wauneta 115-kV transmission line into the new 115-kV Steel Box Structure.

d. Stringing, splicing, sagging, and clipping in the overhead ground wires, as described; and installing material to complete the overhead ground wire installations.

(1) Restring and reattach the existing 3/8 HS OGW on the Frenchman Creek – Wauneta 115-kV transmission line into the new 115-kV Steel Box Structure.

e. Determining the number of vibration dampers needed, furnishing material, and performing all work, including testing, required to furnish and install vibration dampers for ACSR conductors and steel-strand overhead ground wires. The tension and span data is on the “Vibration Damper” Drawing, FRC-WAN 1004. Existing Vibration Dampers can be salvaged and reused.

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

The Bidding Schedule does not contain separate items for this Division. The cost of compliance with the requirements of Division 13 shall be included into the applicable Bidding Schedule items.

1. GENERAL REQUIREMENTS:

a. Environmental Requirements (See Section 13.2 of Standard).

b. Landscape Preservation (See Section 13.3 of Standard).

c. Preservation of Cultural Resources (See Section 13.4 of Standard).

d. Noxious Weed Control (See Section 13.5 of Standard).

e. Recycled Material Quantities (See Section 13.6 of Standard).

f. Disposal of Waste Material (See Section 13.8 of Standard).

g. Contractor’s Liability for Regulated Material Incidents (See Section 13.9 of Standard).

h. Pollutant Spill Prevention, Notification, and Cleanup (See Section 13.10 of Standard).

i. Treated Wood Utility Poles and Crossarms Recycling or Disposal (See Section 13.12 of Standard).

Message from the Administrator

At Western, we show our commitment to safety every day through the actions we take, the training we offer and the work conditions we provide. We expect the same commitment to safety from each of our contractors who provide products or services to Western. In performing work for Western, all contractors must make the right decisions to ensure that the work environment is as safe as possible.

Our safety program is based on four points:

Safety procedures or common sense must be applied by each

Federal and contract employee. Safety should not be set aside to meet a project schedule or for personal convenience.

Employees and contractors must believe that they have the right and the responsibility to identify and take action to reduce, if not eliminate, hazardous work environments and hazardous work practices.

Managers and supervisors must lead by example and execute their responsibility to ensure each job is accomplished in a safe and healthy way.

Safety is a personal responsibility. Each individual makes the decision on what action to take to accomplish a task.

By integrating these principles into every task we take, together we can ensure Western is a safe place to work.

Mark A. Gabriel Administrator