ADDENDUM NUMBER: MODIFYING: Specifications No. 1628

August 2009 - 1 - 1628

DATE: September 2, 2009 ADDENDUM NUMBER: 2 MODIFYING: Specifications No. 1628 PROJECT: F. E. Weymouth Water Treatment Plant Power System Upgrade BID TIME AND DATE: 2:00 p.m., September 24, 2009 FROM: THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA

700 North Alameda Street, Third Floor Los Angeles, California 90012 (P.O. Box 54153, Los Angeles, California 90054) (213) 217-6515

TO: All prospective bidders This addendum forms a part of the contract documents. Use Specifications No. 1628 as originally issued to submit bids, in conjunction with this addendum and all previously issued addenda, and acknowledge receipt of this addendum by completing Document 00420, “Bidder's General Information,” in the specifications. This addendum consists of 7 pages of text, 18 pages of attached documents, Specifications Volume 5 (consisting of 287 pages), and 24 sheets of 11" x 17" drawings.

CHANGES TO SPECIFICATIONS:

1. In Section 01012, “Metropolitan Furnished Equipment,” in Paragraph 3.01A, delete “and 13005”

2. In Section 02114, “PCB Containing Material Removal and Disposal,” in the table at the end of the section, delete the entire row of Equipment Number 7R.

3. Delete Section 05580, “Formed Metal Fabrications,” dated December 19, 2006, and replace with the attached Section 05580, dated August 26, 2009.

4. Delete Section 15330, “Clean Agent Fire Suppression System,” dated November 20, 2008, and replace with the attached Section 15330, dated August 27, 2009.

5. In Section 16346, “Generator Control Switchgear,” at the end of Paragraph 2.02C, add the following sentences to the end of the paragraph:

“Allen Bradley PLC is required to match other products in use at the Weymouth Plant. As such, no substitution will be allowed for this product.”

6. Delete Section 16770, “Public Address System,” dated January 31, 2007, and replace with the attached Section 16770, dated August 20, 2009.

CHANGES TO CABLE AND CONDUIT SCHEDULES:

7. Delete Volume 5of 8 in its entirety, and replace with the attached Volume 5 of 8, Addendum 2 (issued August 31, 2009). Metropolitan has made the following changes to the Cable and Conduit Schedules:

1. The listing of cable and conduit schedules remain in the same order as originally issued.

2. Part 1 through Part 5 are clearly identified.

3. The footers on each schedule are revised to identify the author of the schedules (MWD or Consultants)

4. Any changes in individual cable or conduit is shown by Rev. No. and date.

Addendum Number 2

August 2009 - 2 - 1628

CHANGES TO DRAWINGS:

8. The following drawings have been revised, as shown on the prints of the attached sheets. These drawings as revised shall be controlling for the purposes of the required work in lieu of the drawings previously issued. The changes made on each drawing are indicated in the revision block on each drawing.

Reference No.

Sheet No.

Drawing No.

RevisionNo.

1. G-2 B-130727 1 2. G-3 B-130728 2 3. G-5 B-130730 1 4. G-6 B-130731 2 5. G-7 B-130732 1 6. G-8 B-130733 1 7. E-69 B-130832 1 8. 1E-128 B-27489 4 9. 4E-5 B-131211 1

9. The following new drawings have been added to the contract drawings. Prints of the new drawings are attached.

Reference No.

Sheet No.

Drawing No.

Description

1. 1.2 B-130762 Addendum 2 Approval Sheet 2. MT15.30 B-130756 Pipe Support Span Tables 3. MT15.39 B-130757 Pre-Fabricated Pipe Support Details 4. MT15.41 B-130758 Trapeze Pipe Support Details 5. MT15.70 B-130759 Utility Hose Station Details 6. MT15.75 B-130760 Floor Drain Installation Details

10. Metropolitan has made changes to the following drawings without issuing revised drawings at this time; however, Metropolitan will issue revised drawings showing these changes after the contract is awarded.

Reference No.

Sheet No.

Drawing No.

Description of Changes

1. 1A-53 B-130958 Change Keynote 5 to read: Silencers, Provide IAC (Industrial Acoustic Company) Silencer Model No. 7LFS, or equal.

2. 1E-203 B-131150 Change Note 3 to read: Removed and relocated lines are not shown on the ductbank profile. Refer to Demolition Sheets 1E-15 and 1E-23 for further information.

3. 1M-57 B-131046 In the Legend, change the specification number “13935” to read: “15300”

Addendum Number 2

August 2009 - 3 - 1628

11. The following reference drawings are being provided for information. Prints of the reference drawings are attached.

Reference No.

Sheet No. Drawing No.

1. IL-10 (Spec 1546A) B-113064

2. IL-12 (Spec 1546A) B-113066

3. IL-15 (Spec 1546A) B-113069

4. IL-16 (Spec 1546A) B-113070

5. IL-20 (Spec 1546A) B-113072

6. IL-22 (Spec 1546A) B-113074

7. IL-25 (Spec 1546A) B-113077

8. 7E-2 (Spec 1633) B-129952

9. 7E-3 (Spec 1633) B-129953

QUESTIONS AND CLARIFICATIONS:

Requests for clarification of details on the Sheets or of provisions of the specifications have been identified. The questions with the appropriate Metropolitan responses are as follows:

(1) Question: Conduit number 01C06F106 is stated as going from 01MH510T to 04PB001T on the Conduit Schedule (Part 1 – Sheet 19) with fiber 05FE001FA being pulled through it. However, DWG 4E-5 shows it as a spare with a cap at the wall. Please advise on the routing of 05FE001FA.

Answer: In this addendum Sheet 4E-5 is revised to show the correct conduit routing. (2) Question: For the ¾”-SW-C line (to hose bib) on Sheet 1M-62, a utility station, Detail 1, Sheet MT15.70 is

referred to, however, this sheet was not included in the reference standard Sheets that were provided in volume 8. Cleanouts and floor drains referred to on Sheet 1M-65 references Sheet MT15.75, but was not included in the drawings provided. Pipe supports shown on Sheet 1M-65 and 66 refer to Sheets MT15.30, MT15.39, and MT15.41, but these standard details were not provided. Please provide all the pipe support standard details for reference.

Answer: In this addendum, referenced MT sheets have been added. (3) Question: On Sheet 1E-17. Note 1 says remove and salvage Bitronic meters. Please provide a submittal on

the existing main plant switchgear and transformer so that quantity and nature of removal can be quantified.

Answer: do not have any submittal information on the Bitronic meters. They can be removed and salvaged once de-energized.

(4) Question: On Sheet 1E-19 what size wires need to be removed connecting panel LP and equipment: Battery charger, Fuel Leak Panel, day tank?

Answer: We do not have as built information on these wires. These are expected to #12 wires or larger (This size is assumed on the fact that these wires originate from 20 Amps breakers)

(5) Question: On Sheet 1E-19 advise if wires and exposed conduits for motorized dampers in Generator Building are to be removed.

Answer: Yes. Remove the wires and exposed conduits for motorized dampers in Generator Building.

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August 2009 - 4 - 1628

(6) Question: On Sheet 1E-26 UPC7R is shown to be demolished by others however it is on the Power Transformer Demolition List. Clarify whether UPC 7R is to be demolished by others.

Answer: In this addendum, UPC 7R is removed from the Power Transformer Demolition List. (7) Question: Sheets 1E-131 thru 1E-133 refer to reference Sheets B-129952 and B-129953. Please provide these

reference Sheets. Answer: In this addendum, these reference drawings have been added.

(8) Question: On Sheet 1E-131 the existing transformer 41R-3 (4R-4) and its connections are not shown. Please provide reference Sheets showing the existing conditions of this building and clarify which wires need to be removed.

Answer: On Sheet 1E-131 the existing transformer 41R-3 (4R-4) and its connections are not shown, because it is a not a demolition drawing. See Sheet E-31 for demolition, including removal of wires.

(9) Question: Conduits 4R and 4R-1 are shown to be removed on Sheet 1E-130. Are there currently wires in these conduits that also need to be removed?

Answer: Yes. Currently there are 3#6 wires. (10) Question: Please confirm that Existing UPC 4R-4 shown on Sheet 1E-25 is the same as 41R-3 shown on one-

line E-31 and reference Sheet B-33001. Answer: Yes.

(11) Question: On Sheet 1E-203 Note 3 refers to Sheets IE-15 and IE-23 which are not included with the bid documents. Please provide drawing references that show existing lines to be relocated in this area.

Answer: In this addendum, Note 3 on Sheet 1E-203 Note 3 has been corrected to change Sheets IE-15 and IE-23 to 1E-15 and 1E-23 respectively.

(12) Question: Confirm that the single line diagrams in Volume 6 reflect the current wiring configurations for all existing electrical equipment requiring removal and/or modification.

Answer: Correct. (13) Question: Sheet E-16; clarify what size wires connect panel P1 and 29MCC-1

Answer: Cable 1P001PA is 3-1/C #4 with ground from panel P1 to 29MCC-1 (14) Question: On Sheet E-24 what is the location of polymer power panel 5 pp1 and alum/ferric power panel

5afp1 Answer: See Sheet 1E-3 for panel locations.

(15) Question: Single Line Diagrams do not clearly indicate whether all wires connected to electrical equipment to be removed are to also be removed from existing conduits. Please confirm that all wires connected to and from any electrical device that is to be removed shall also be removed from existing raceways. Otherwise, please clarify which wires are to remain in place after equipment is removed.

Answer: Yes. All wires connected to any electrical devices that are to be removed shall also be removed from the existing raceways.

(16) Question: Sheet 1A-53 shows a combination of silencers and louvers for the ORP Switchgear building. The specifications indicate the type of louver and manufacturer requested, but the specifications do not contain the type of silencer required (i. e. acoustic or regular, manufacturer). Reviewed mechanical drawings (as indicated on Sheet 1A-53) but no mention of make/model or silencer type is indicated.

Answer: In this addendum, On Sheet 1A-53, Keynote 5 is changed to specify the silencer. (17) Question: In our opinion the required time frames listed in the Milestones are unrealistic at best given the

work hours stated in Section 01010 1.02. B. Will the Metropolitan entertain the possibility of a second shift?

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August 2009 - 5 - 1628

Answer: Metropolitan has evaluated the milestones and has concluded that the work can be completed within the timeframes indicated. Note that the Contractor may plan multiple shifts within the 12-hour period stated in Paragraph 1.02B.

(18) Question: This bid is extensive in nature and its complexity, will the Metropolitan entertain and extend bid date, If so what will be the new bid date?

Answer: The bid date was extended to September 24, 2009 in Addendum 1. (19) Question: We are bidding emergency paralleling switchgear portion of the subject project and would like a

clarification based on specification section 16346-3, Paragraph 2.02C. Please advise if GE Fanuc PLC is acceptable and can be provided in lieu of Allan Bradley PLC as per specification.

Answer: GE Fanuc PLC is not acceptable in lieu of Allan Bradley PLC. In this addendum, PLCs by Allen Bradley are identified as a sole brand to match existing products in use by Metropolitan.

(20) Question: Refer to Section 16720, 1.04F.7 & Section 16720, 1.04 K – Normally, the conduit for the fire alarm system is provided by the electrician. Please confirm that the Fire Alarm contractor is to provide their own conduit for this project.

Answer: The items listed in both paragraphs are in the fire alarm contractor’s scope of work and may be provided by the Contractor, or fire alarm subcontractor, or electric contractor..

(21) Question: Refer to Section 16720, 1.04J, and Section 16720, 1.05B Please confirm that the Fire Protection System Supplier/Contractor must provide a total package of: Clean Agent Fire Suppression, Double Interlock Preaction Sprinkler System, and Fire Alarm Systems.

Answer: Information stated in both of these paragraphs is correct. (22) Question: Refer to Section 16720, 1.08A.1

Please confirm the requirement for a California Registered Fire Protection Engineer to be employed by the Fire Protection System Supplier/Contractor.

Answer: Information stated in the paragraph is correct. (23) Question: Refer to Section 16720, 1.06F. Please confirm that dedicated fire alarm fiber optic cables will be

provided between buildings. Answer: Yes. Dedicated fire alarm fiber optic cables will be provided between buildings. Refer to Sheet

I-40. (24) Question: Sheet 1E-221 shows a NEMA 4X box. Are all fire alarm, and related devices, to be explosion-

proof in the battery rooms? Answer: No. Explosion –proof type enclosure is not necessary.

(25) Question: Section 15330, 1.01A refers to designing and furnishing a total flooding clean agent fire suppression system for the Ozone Contactor (Destruct Room). The drawings do not reflect the Ozone Contactor. Is the Ozone Contactor (Destruct Room) part of this project?

Answer: No. The Ozone Contactor (Destruct Room) is not part of this project. (26) Question: Section 15330, 1.01A refers to the Ozone Generation Building and five (5) complete total flooding

systems for the listed rooms. Drawings indicate five (5) systems in Main Plant Switchgear Building. Please identify which building is part of the project.

Answer: The ozone generation building is not part of this project. This project includes the ORP switchgear building and the Main Plant Switchgear Building. In this addendum, Section 15330 is replaced with a new section.

Addendum Number 2

August 2009 - 6 - 1628

(27) Question: Section 15300, 1.01A refers to designing and furnishing a double interlock preaction fire sprinkler system for the ORP Emergency Generator Room. Sheet 1M-57 refers to installing a sprinkler system per Specification 13935 (Dry Pipe Fire Sprinkler System). Please clarify what type system is required.

Answer: The system specified in Section 15300 is the correct system. In this addendum, the note on Sheet 1M-57 has been changed.

(28) Question: If there is a double interlock preaction system, where is the Pre-action riser to be located and where is the point of connection?

Answer: Riser is indicated on Sheet 1M-62, Grid C-2. (29) Question: Will field personnel working for the Contractor have full access to the head house and chlorine

areas to perform their work? Will this be granted by issuing badges or some other method? Answer: Yes. See Section 01060, Article 1.07, “Process Safety Management.” The Contractor is

responsible for coordinating training of its employees and restricting the employees that do not meet the training requirements for entry into the PSM area.

(30) Question: Can the Contractor utilize Metropolitan equipment under controlled circumstances such as overhead bridge cranes in areas where that crane is designed for work in that area?

Answer: The overhead cranes may be available for use upon request to Metropolitan. However, only Metropolitan operators are authorized to operate the cranes. The Contractor shall submit a request to the Engineer with a Confirmation Notice as specified in Section 01100, for the use of a crane and Metropolitan operator.

(31) Question: Will Metropolitan be responsible for making manholes and underground pull boxes safe for entry such as removing water?

Answer: The Contractor shall be responsible for removing water from manholes, pullboxes, and vaults. The Contractor is responsible for working safely at all times and in accordance with Section 01060. If the Contractor has safety related questions concerning work in an area, these should be addressed to the Engineer.

(32) Question: Section 01012, Sections 15995 and 13005 are referenced in Paragraph 3.01A . Section 13005 is not a listed spec nor has it been provided. Please provide.

Answer: In this addendum, the reference to Section 13005 is removed from Paragraph 3.01A

(33) Question: Follow-up question to (3) Question of Addendum Number 1. Is it Metropolitan’s intent for the successful contractor to provide the 20,000 gallon diesel storage tank and the two day tanks full of diesel fuel and then re-fill after all necessary testing ?

Answer: Yes.

(34) Question: Sheet 1E-128 shows one cable run to MCC-8P and MCC-6P. However, drawing E-13 and the cable schedule indicate two cable feeders are required. Please clarify if the second of the two 3 inch conduits are empty for each MCC in question. Sheet 1E-127 does not show demo, but labels them as “Control”.

Answer: In this addendum, Sheet 1E-128 is revised to show two cable run to MCC-8P and MCC-6P.

(35) Question: What is the size of the existing feeder to existing substation 08US 6R ? Demolition plan Sheet E-69 shows (2) 3-1/C 500 kcmil & 1/C #4/0 GRD. However, Sheet 8E-4 and reference drawing B-3301 both indicate (1) 3-1/C 350 kcmil & 1/C # 2 grd.

Answer: In this addendum, Sheet E-69 is revised to show feeder cable is (1) 3-1/C 350 kcmil & 1/C # 2 grd.

(36) Question: Specification Section 05580, Formed Metal Fabrication, please indicate location.

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August 2009 - 7 - 1628

Answer: This applies to the interior metal panels in the Generator Room. In this addendum, Section 05580 is revised.

(37) Question: In the ORP Switchgear Building, Room 105, Emergency Generator Room and Stair Well, there is a call for perforated metal panel on acoustical batt insulation (See Notes 3 and 9 on Sheet 1A-57 typ.). Where is that specified?

Answer: This information is shown on Sheet 1A-61, Material and Finish Schedule, Finish Code: MP (38) Question: California Civil Code 2782 precludes an owner from being indemnified from its sole negligence or

willful misconduct. This is in addition to California Civil Code Section 2782(b) that any public contract provision imposing liability on a contractor for a public owner’s negligence is void. In light of these statutory requirements will the District modify Paragraph 19(e) of General Conditions to strike the first half of the subparagraph “Duty to Defend” to delete: “Notwithstanding assertion that Metropolitan, the Board, any member of the Board, or Metropolitan’s officers, agents, or employees may have been solely negligent” and amend the remainder of it to read: “The Contractor shall assume the defense of Metropolitan, the Board, each member of the Board, Metropolitan’s officers, agents, and employees from all claims subject to indemnity requirements of Paragraph 19(f) arising directly or indirectly out of the performance of the work.”

Answer: No. The District will not modify Paragraph 19(e) of General Conditions. Your attention is further directed to Paragraph 19(g).

(39) Question: In Section 03300, in Article 3.09, “Architectural Finish for Formed Surfaces,” subparagraphs 3.09C.1 through 3.09C.4 specify the following steps:

1. concrete surface shall be brush abrasive blasted 2. apply concrete patching compound 3. sand to achieve smooth uniform finish 4. apply sealer on finish surfaces

In Section 03100, in Article 3.03, Installation of Class I Forms,” some of the subparagraphs 3.03B.1 through 3.03B.5 also specify the following:

1…pointing/patching plywood joints with epoxy putty - on page 03100-4 3…machine-sanding and light sanding of plywood facing - on page 03100-4 5…Class 1 forms may be reused only with the approval of the Engineer” - on page

03100-4. (Suggestion; to read – “Class 1 form can be reuse more than once”.). QUESTION: We believe that the steps specified in Section 03300, 3.09C will provide the desired finish; and therefore we suggest that the above requirements in Section 03100 be eliminated. Please advise.

Answer: The steps in both sections will remain in the specifications as written. These requirements will be enforced as applicable.

END OF ADDENDUM

August 26, 2009 05580-1 1628 (construction contract) Addendum 2

SECTION 05580 FORMED-METAL FABRICATIONS

PART 1 GENERAL

1.01 REFERENCES

A. General

1. The publications listed below form a part of this specification to the extent referenced.

2. Where a date is given for reference standards, that edition shall be used. Where no date is given for reference standards, the latest edition available on the date of the Notice Inviting Bids shall be used.

B. American Society for Testing Materials (ASTM)

1. ASTM A276, Standard Specification for Stainless Steel Bars and Shapes

2. ASTM A380, Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems

3. ASTM A666, Specification for Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar

4. ASTM C1085, Specification for Butyl Rubber-Based Solvent-Release Sealants

C. National Association of Architectural Metal Manufacturers (NAAMM)

1. Metal Finishes Manual for Architectural and Metal Products

1.02 PERFORMANCE REQUIREMENTS

A. Corrosion Control: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials.

1.03 SUBMITTALS

A. Product Data: Submit descriptive and technical information.

B. Shop Drawings: Detail fabrication and installation of the following formed-metal fabrications. Include plans, elevations, sections, and details of components and their connections. Show anchorage and accessory items.

C. Coordination Drawings: For formed-metal fabrications housing items specified in other sections such as mechanical ducts or structural members. Show dimensions of housed items, including locations of housing penetrations and attachments, and necessary clearances.

D. Samples for Initial Selection: Manufacturer's charts showing the full range of textures, and patterns available for each type of formed-metal fabrication indicated.

E. Samples for Verification: For each type of exposed finish required, prepared on 6-inch square samples of metal of same thickness and material indicated for the Work. If finishes involve normal color and texture variations, include sample sets showing the full range of variations expected.

F. Mill Certificates: Signed by manufacturers of stainless-steel sheet certifying that products furnished comply with requirements.

1.04 QUALITY ASSURANCE

A. Fabricator Qualifications: A firm experienced in producing formed-metal fabrications similar to those indicated for this Project and with a record of successful in-service performance, as well as sufficient production capacity to produce required units.

B. Source Limitations: Obtain formed-metal fabrications through one source from a single manufacturer.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Deliver formed-metal fabrications wrapped in protective coverings and strapped together in suitable packs or in heavy-duty cartons. Remove protective coverings before they stain or bond to finished surfaces.

B. Store products on elevated platforms in a dry location.

Formed-Metal Fabrications

1628 05580-2 August 26, 2009 Addendum 2 (construction contract)

1.06 PROJECT CONDITIONS

A. Field Measurements: Where formed-metal fabrications are indicated to fit to other construction, verify dimensions of other construction by field measurements before fabrication and indicate measurements on shop drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work.

PART 2 PRODUCTS

2.01 SHEET METAL

A. General: Provide sheet metal without pitting, seam marks, roller marks, stains, discolorations, or other imperfections where exposed to view on finished units.

2.02 MISCELLANEOUS MATERIALS

A. Joint Sealants for Concealed Joints: One-part, nonsag, solvent-release-curing, polymerized butyl sealant complying with ASTM C1085 and formulated with minimum of 75 percent solids.

B. Filler Metal and Electrodes: Provide type and alloy of filler metal and electrodes as recommended by producer of metal to be welded or brazed and as necessary for strength, corrosion resistance, and compatibility in fabricated items.

1. Use filler metals that will match the color of metal being joined and will not cause discoloration.

C. Fasteners: Use fasteners fabricated from same basic metal and alloy as fastened metal, unless otherwise indicated. Do not use metals that are corrosive or incompatible with materials joined.

1. Provide concealed fasteners for interconnecting formed-metal fabrications and for attaching them to other work, unless otherwise indicated.

2. Provide Phillips flat-head machine screws for exposed fasteners, unless otherwise indicated.

D. Nonstructural Anchors: For applications not indicated to comply with design loads, provide anchors of type, size, and material necessary for type of load and installation indicated, as recommended by the manufacturer from options listed below, unless otherwise indicated. Use nonferrous-metal or hot-dip galvanized anchors for exterior installations and elsewhere as needed for corrosion resistance.

1. Powder-actuated fasteners.

2. Metal expansion sleeve anchors.

3. Metal impact expansion anchors.

2.03 FABRICATION, GENERAL

A. Shop Assembly: Preassemble formed-metal fabrications in shop to greatest extent possible to minimize field splicing and assembly. Disassemble units only as necessary for shipping and handling limitations. Clearly mark units for reassembly and coordinated installation.

B. Coordinate dimensions and attachment methods of formed-metal fabrications with those of adjoining construction to produce integrated assemblies with closely fitting joints and with edges and surfaces aligned, unless otherwise indicated.

C. Form metal to profiles indicated, in maximum lengths to minimize joints. Produce flat, flush surfaces without cracking or grain separation at bends. Fold back exposed edges of unsupported sheet metal to form a 1/2-inch wide hem on the concealed side, or ease edges to a radius of approximately 1/32-inch and support with concealed stiffeners.

D. Increase metal thickness or reinforce with concealed stiffeners, backing materials, or both, as needed to provide surface flatness specified for stretcher-leveled sheet metal and sufficient strength for indicated use.

1. Support joints with concealed stiffeners as needed to hold exposed faces of adjoining sheets in flush alignment.

E. Build in straps, plates, and brackets as needed to support and anchor fabricated items to adjoining construction. Reinforce formed-metal units as needed to attach and support other construction.

F. Provide support framing, mounting and attachment clips, splice sleeves, fasteners, and accessories needed to install formed-metal fabrications.

Formed-Metal Fabrications


G. Where welding or brazing is indicated, weld or braze joints and seams continuously. Grind, fill, and dress to produce smooth, flush, exposed surfaces in which joints are not visible after finishing is completed.

1. Use welding and brazing procedures that will blend with and not cause discoloration of metal being joined.

2.04 CLOSURES AND TRIM

A. Form closures and trim from metal of type and thickness indicated below. Fabricate to fit tightly to adjoining construction.

1. Metal for Interior Installations: Stainless steel sheet, 0.050 inch.

B. Conceal fasteners where possible; otherwise, locate where they will be as inconspicuous as possible. Size fasteners to support closures and trim, with fasteners spaced to prevent buckling or waviness in finished surfaces.

C. Drill and tap holes needed for securing closures and trim to other surfaces.

D. Miter or cope trim members at corners and reinforce with bent metal splice plates to form tight joints.

2.05 FINISHES, GENERAL

A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes.

B. Complete mechanical finishes of flat sheet metal surfaces before fabrication where possible. After fabrication, finish all joints, bends, abrasions, and other surface blemishes to match sheet finish.

C. Protect mechanical finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping.

PART 3 EXECUTION

3.01 INSTALLATION

A. Locate and place formed-metal fabrications level, plumb, and in alignment with adjacent construction.

B. Use concealed anchorages or as indicated. Provide washers fitted to screws where needed to protect metal surfaces and to make a weathertight connection.

C. Form tight joints with exposed connections accurately fitted together where permitted. Provide reveals and openings for sealants and joint fillers as indicated.

D. Install concealed gaskets, joint fillers, and insulation, as the Work progresses, to make interior formed-metal fabrications soundproof or lightproof as applicable to the type of fabrication indicated.

E. Corrosion Protection: Coat concealed surfaces of aluminum, zinc-coated, and nonferrous metals that will come into contact with grout, concrete, masonry, wood, or dissimilar metals with a heavy coat of bituminous paint.

3.02 ADJUSTING

A. Restore finishes damaged during installation and construction period so no evidence remains of correction work. Return items that cannot be refinished in the field to the shop; make required alterations and refinish entire unit or provide new units.

3.03 PROTECTION

A. Protect finishes of formed-metal fabrications from damage during construction period. Remove temporary protective coverings at time of acceptance.

END OF SECTION


SECTION 15330 CLEAN AGENT FIRE SUPPRESSION SYSTEM

PART 1 GENERAL

1.01 APPLICATION

A. The clean agent fire suppression system shall be designed, furnished, and commissioned by a qualified System Supplier who has a minimum of 5 years experience in designing and furnishing clean agent fire suppression systems. Clean agent fire suppression systems shall be provided in the Main Plant Switchgear Building and the ORP Switchgear Building. Refer to design drawings for the exact number of complete total flooding clean agent fire suppression systems.

1.02 DEFINITIONS

A. System Supplier: Where "System Supplier" is referred to in this section, it shall mean the party under contract with the Contractor for design, furnishing, and commissioning the clean agent fire suppression systems. At the Contractor’s option, the System Supplier may also install the system.

1. System Supplier for work in this section shall also be the System Supplier for the work in Section 15300, Double Interlock Preaction Fire Sprinkler System, and Section 16720, Fire Alarm and Detection System.

1.03 REFERENCES

A. General

1. The publications listed below form a part of this specification to the extent referenced.

2. Where a date is given for reference standards, the edition of that date shall be used. Where no date is given for reference standards, the latest edition available on the date of the Notice Inviting Bids shall be used.

B. American Society for Testing and Materials (ASTM)

1. ASTM A53, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

2. ASTM A197, Standard Specification for Cupola Malleable Iron

C. American National Standards Institute (ANSI)

1. ANSI B1.20.1, Pipe Threads, General Purpose

2. ANSI B16.3, Malleable Iron Threaded Fittings

3. ANSI B16.11, Forged Fittings, Socket-Welded and Threaded

4. ANSI B16.39, Malleable Iron Threaded Pipe Unions Classes 150, 250, and 300

5. ANSI B31.1, Power Piping

D. Factory Mutual Engineering and Research Corp. (FM)

1. FM Approval Guide

E. National Fire Protection Association (NFPA)

1. NFPA 72, National Fire Alarm Code

2. NFPA 2001, Clean Agent Fire Extinguishing System

F. Underwriter’s Laboratories, Inc. (UL) Publication

1. Fire protection equipment list with quarterly supplements

G. U.S. Department of Transportation (DOT)

1. Title 49 Code of Federal Regulations Parts 100 to 199 Transportation of Hazardous Materials

H. Uniform Building Code (UBC)

Clean Agent Fire Suppression System


1.04 SYSTEM DESIGN REQUIREMENTS

A. Each of the total flooding clean agent fire suppression systems shall be fully engineered system employing computer- generated hydraulic calculations and shall comply with the requirements of NFPA 2001.

B. Each of the protected rooms shall be provided with their own cylinders and manifolds. Each of the cylinders in a system shall have the same density and fill weights.

C. Each cylinder or groups of cylinders shall be securely mounted to a rigid surface. The bracket anchors and mounting surface shall withstand a thrust at 1,000 lbs for 5 seconds.

D. The distribution nozzles associated with each system shall be of the same model.

E. Design Requirements

1. The Clean Agent Fire Suppression Systems shall provide a concentration of extinguishing agent, in 7 percent by volume for a Class A and C fire with live electrical equipment, sufficient to create an atmosphere that will not support combustion when discharged in the protected areas. Should it be determined that an adjustment in the design concentration is required for fire extinguishment involving live electrical equipment, the Contractor shall design his system to that concentration.

2. The power to the electrical equipment will not be terminated upon detection of smoke or release of clean agent.

3. The release of the clean agent shall be accomplished by an electrical output from the fire alarm control panel to a solenoid-operated releasing device and shall be in accordance with the requirements set forth in NFPA 2001 and Section 16720.

4. All of the protected areas shall be considered occupied.

5. The total discharge time shall not exceed 10 seconds.

6. The clean agent fire suppression systems design shall have the capacity to automatically maintain the concentration for a minimum of 10 minutes. This amount of extinguishing agent shall be sufficient to meet the required concentrations for the hazards plus an appropriate amount to compensate for pipe losses, unclosable openings, run-down time of fans, time required for dampers to close, and other features of the facility that could affect the concentration.

7. The clean agent fire suppression systems shall be designed to the UBC Seismic Zone 4.

8. The design temperatures for the areas to be protected with clean agent fire suppression systems shall be 68°F of minimum ambient temperature and 84°F of maximum ambient temperature.

1.05 SUBMITTALS

A. General

2. Submit as one package with the Double Interlock Preaction Sprinkler System specified in Section 15300 and the Fire Alarm and Detection System specified in Section 16720, including fire alarm shop drawings, product data, calculations, etc. and evidence of the designer’s and installer’s qualifications.

3. Obtain approval of the local fire authority for the entire system, including the hardware specified in this section and the initiating and activating system specified in Section 16720, prior to submitting for review to the engineer, purchasing the equipment, or proceeding with installation.

4. All submittals shall be in conformance with Section 01300. The shop drawings, product data, calculations, and evidence of the designer’s and installer’s qualifications shall be submitted as one package for review and approval prior to purchase and installation. Failure to submit this information as a package shall result in a rejection of the submittal.

5. Contractor shall submit proof that a current State of California C-16 Fire Protection Contractor License is being maintained. The Contractor shall provide a list of a least five references for systems of similar nature and size that have been designed and installed by the Contractor.

6. The Contractor shall show evidence that the equipment can be supported by a service organization that can provide service within 24 hours.



B. Material and Equipment Information

1. Material and equipment information shall include manufacturer's catalog cuts, descriptive data, and technical data for each component or device used in the system to enable the exact function of each device to be determined and shall indicate UL Listing or FM Approval. The model shall be clearly indicated. Failure to do so indicate the model will result in the rejection of the material. The material to be submitted shall include, but not be limited to the following:

a. Clean Agent Storage Containers and their accessories

b. Storage Racks and Mounting Brackets

c. Discharge Manifold

d. Pressure Switches

e. Valves, Nozzles, and Piping

f. Pipe supports

g. Warning Signs

C. Drawings

1. Plan and isometric drawings shall be submitted to Metropolitan for approval.

2. Drawings shall be in accordance with NFPA 2001 and as indicated.

3. As a minimum, the quantities of devices, locations, sequence of operation, installation details of all piping and equipment associated with the total flooding clean agent fire suppression systems shall be shown.

4. Drawings shall be to an indicated scale of not less than 1/4 inch to the foot.

5. All drawings shall bear the stamp of approval of a C-16 contractor licensed to perform such work by the State of California, fully experienced and qualified in the design of clean agent fire suppression systems and is regularly employed by the Contractor.

D. Clean Agent Calculation

1. The Contractor shall use an UL-listed computer program for the hydraulic calculations of the clean agent fire extinguishing system. Provide computer generated hydraulic calculations to demonstrate the total storage requirements, volumetric concentration and certify that a full 7 percent concentration, or required concentration, will be discharged within 10 seconds. The calculations shall indicate the pressure changes, flow rates, pipe, and nozzle sizes.

2. All calculations shall be performed and stamped by a California State registered Fire Protection Engineer.

E. Operations and Maintenance Manuals

1. The Operations and Maintenance Manuals shall be submitted in accordance with Section 01730. The Contractor shall provide complete bound operation and maintenance instruction manuals to Metropolitan.

2. Manuals shall include outlining step-by-step the operational procedures required for system start-up, sequence of operation, and shutdown.

3. Maintenance instructions shall list routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guide. The instructions shall include conduit layout, equipment layout, and simplified wiring and control diagrams of the installed system.

4. The manuals shall include the manufacturer's name, model number, parts list, a brief description of equipment and their basic operating features.

5. Manufacturer's descriptive literature, with information for each piece of equipment shall be included.

6. The name, location, phone number of the recharging company as well as a contact at the company shall be included.

7. A listing of all required special tools for the maintenance or repair of the system and special tools required for construction and testing shall be submitted. Access codes for the control panel shall be provided to the Engineer.

8. Spare parts list and prices for start-up and 1-year operation shall be submitted.



9. Lesson plans and training data in manual format shall be submitted.

10. A copy of all test reports and certificates shall be submitted.

F. Test Plan

1. The test plan shall describe how the systems shall be tested. This shall include a step-by-step description of all tests and shall indicate type and location of test apparatus to be employed. This test is intended to demonstrate that the operating and installation requirements of this specification have been met. All tests shall be conducted in the presence of the Engineer.

G. Test Reports

1. The test reports shall show all field tests performed to adjust each component and all field tests performed to prove compliance with the this specification and NFPA 2001. Each test report shall indicate the final position of controls.

H. As-Builts

1. Upon completion of each system, the Contractor shall provide as-built drawings showing actual installation details. At least one set of the drawings submitted shall be reproducible. All exact piping routing details, wiring, control circuit logic and clean agent cylinder locations shall be shown.


A. System Contractor Qualifications

1. The system shall be designed, installed, and tested by an experienced firm regularly engaged in the designing, installation, and testing of automatic (engineered) total flooding clean agent fire suppression systems of this type. The Contractor shall employ engineering and field employees with a minimum of 5 years experience in design; installation, testing, and service of total flooding clean agent fire suppression systems.

a. The Contractor shall maintain a current State of California C-16 Fire Protection Contractor License.

2. The Contractor shall have and provide the capability to recharge the largest clean agent system within 24 hours after discharge.

3. The Contractor shall be an authorized stocking distributor of the manufacturer for the equipment included in the system so that replacement parts can be immediately made from inventory. The Contractor shall have the capability and provide telephone communications on a 24-hour, 7-day-a-week basis. The Contractor’s service personnel shall be available for emergency service at all times.

4. One manufacturer whose established reputation and experience in the industry is not less than 5 years shall produce all major components of the system.

1.07 DELIVERY, STORAGE, AND HANDLING

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

B. Equipment and materials shall be delivered and stored in their original containers. Labels and containers shall indicate clearly the manufacturer’s name, brand name and identifying part number.

C. The Contractor shall provide adequate means for and shall fully protect finish pieces of the equipment and materials against damage during installation through final completion.

D. In the event that damage has incurred during any phase of storage, handling, or installation, the Contractor shall replace the equipment at his cost without delay to the original schedule.

1.08 WARRANTY

A. The clean agent fire suppression system components specified herein shall be guaranteed against defect in design, material and workmanship for the full warranty period in accordance with Section 01740, but in no case shall be less than two years from the date of acceptance. In addition, the Contractor shall guarantee the system against false actuation or leakage due to faulty equipment, design or workmanship for a period of two years from acceptance. In the event of clean agent leakage or system discharge from any of the above conditions, the Contractor shall correct any or all of the above



conditions which caused the loss of the agent as-well-as completely recharge and recondition the system at no cost to Metropolitan.

B. The Contractor shall provide two inspections of each system during the 2-year warranty period. The first inspection shall be at the one-year interval after system acceptance, and the second at the two-year interval. Inspections shall include determination of agent container weight and pressure and that the system is in proper working order. Documents certifying satisfactory system conditions shall be submitted to the Engineer upon completion of each inspection.

1.09 INSTRUCTION OF METROPOLITAN PERSONNEL

A. The Contractor, upon completion of the installation of the clean agent systems, shall provide Metropolitan’s personnel with an on-site training course of not less than 4 hours duration. The Contractor shall familiarize Metropolitan’s personnel with system components, system functions, and recommended procedures.

B. At this time, a functional test of the system will be demonstrated.

C. The Contractor shall provide a written summary of the functional tests conducted.

PART 2 PRODUCTS

2.01 GENERAL REQUIREMENTS

A. Materials and equipment shall be standard products of a single manufacturer's latest design and suitable to perform the functions intended. The name of the manufacturer and the serial numbers shall appear on all major components.

B. All devices and equipment shall be UL listed and FM approved for their intended use and shall conform to the types and sizes in accordance with NFPA 2001. Each item shall be capable of performing its function over an extended period of time with a minimum of attention and maintenance.

C. Each item of equipment, including parts and accessories, shall be constructed, in a workmanlike manner, using new materials of the best quality obtainable for the purposes intended. The materials, piping, pipe supports, and equipment shall be designed, built and tested in accordance with applicable codes and this specification.

2.02 ACCEPTABLE MANUFACTURERS

A. Simplex

B. Fike

C. Or Equal

2.03 STORAGE CYLINDERS

A. The storage cylinders used shall be constructed of high-strength alloy steel designed to hold the clean agent fire-extinguishing agent at ambient temperatures. The storage cylinders shall meet the requirements of DOT. The design of the storage cylinders shall be such as to be suitable for the maximum pressure developed at 130° F or at the maximum controlled temperature limit, whichever is higher. A safety burst disc shall be provided as part of each storage cylinder. The storage cylinders shall be equipped with a pressure gauge and a supervisory low pressure switch connection for monitoring the cylinder pressure. Storage cylinders shall be designed to meet the requirements of the U.S. Department of Transportation. A reliable means of indication shall be provided to determine the liquid level in refillable storage cylinders without removing the storage cylinder. For clean agent fire extinguishing agents in a multiple storage cylinder system supplying the same manifold outlet for distribution, cylinders shall be interchangeable and of one select size and charge. Each storage cylinder shall be supplied with a valve assembly. The first storage cylinder of a multi-cylinder manifold shall be provided with an electric control head. All other storage cylinders of a multi-cylinder manifold shall be provided with a pressure operated control head connected to the master cylinder through the use of 5/16″ O.D. x 0.032″ wall copper tubing flexible actuation hose. All clean agent storage cylinders shall be provided with a permanent nameplate or other permanent marking specifying, as a minimum, the agent, tare and gross weights, and superpressurization level (where applicable) of the cylinder. Storage cylinders shall be as manufactured by Kidde, Fikes, or equal.

2.04 ELECTRIC CONTROL HEAD

A. The electric control head shall be mounted on top of the cylinder valve assembly and be capable of actuating the clean agent storage cylinder electrically as well as manually. Electric control heads shall be capable of electrical supervision in



accordance with NFPA 72. Electric control heads shall be self-venting to prevent accidental discharge in the event of a slow leak, and shall be Kidde Part No. 890181 or equal.

2.05 SUPERVISORY PRESSURE SWITCH

A. A supervisory pressure switch shall be provided which is compatible with the connection on the storage cylinder valve. It shall be capable of indicating at the fire alarm control panel, a low cylinder pressure condition.

2.06 PRESSURE OPERATED SWITCH

A. The pressure-operated switch shall be capable of de-energizing electrically operated equipment upon system operation. The pressure-operated switch shall be Kidde Part No. 486536, or equal.

2.07 MANIFOLD DISCHARGE PIPING

A. The manifold discharge piping shall be of the same material as the distribution piping. The manifold or discharge piping shall be secured for thermal expansion, contraction and physical damage. There shall be sufficient connections to accommodate the required cylinders. Each manifold or discharge piping shall have mounted in it a pressure operated switch.

2.08 PIPE AND FITTINGS

A. Piping shall comply with the requirements of ANSI B31.1. Piping shall be ASTM A53 seamless or electric resistance welded, Grade A or B as per the manufacturer’s recommendations. The minimum rated working pressure of the pipe shall not be less than the maximum pressure in the container at 130° F when filled to the maximum allowable fill density, and shall be in accordance with NFPA 2001. Pipe and fittings shall be Schedule 40, and galvanized or zinc-coated. Fittings shall be threaded, and galvanized or zinc-coated. Threading shall comply with the requirements of ANSI B1.20.1. The minimum rated working pressure of the fittings shall not be less than the maximum pressure in the container at 130° F when filled to the maximum allowable fill density, and shall be in accordance with NFPA 2001. Fittings shall be 300 pound class ASTM A197 or 300-pound class malleable, ductile iron, or forged steel as per the manufacturer’s recommendations. Fittings downstream of a pressure reducing device shall have a minimum working pressure rating suitable for pressures that it will be experiencing during system operation. Exposed ferrous pipe threads shall be protected with one coat of zinc molybdate primer, applied to a dry-film thickness of 1.0 mil minimum.

2.09 ESCUTCHEONS

A. Metal plates shall be used for piping entering floors, walls, and ceilings in exposed spaces. Where pipe passes through finished ceilings, plates shall be polished stainless steel or chromium plated. Other plates shall be steel with aluminum paint finish.

2.10 PIPE SLEEVES

A. Sleeves shall be provided where piping passes through walls, ceilings, roofs, and floors. The length of sleeves shall be sufficient to pass through the entire thickness. Sleeves in masonry and concrete shall be standard-weight hot-dip galvanized steel, ductile iron, or cast iron pipe Sleeves in other than masonry and concrete shall be 26 gauge galvanized steel sheet. Core drilling of masonry and concrete may be provided in lieu of sleeves, provided that cavities in the core-drilled holes are grouted completely smooth. A 1-inch minimum clearance shall be provided between the exterior of piping and the interior of the sleeve. Mineral wool insulation shall be used to pack the space between the pipe and sleeve and plastic waterproof resilient material, and shall be used to seal both ends of the sleeve or core-drilled hole where such penetrations do not pass through a fire rated wall or floor. Where these penetrations are in fire rated walls or floors, an approved method of restoring the fire rating of the barrier shall fill the penetration. The type, spacing location, and installation of pipe hangers and supports shall be in accordance with NFPA 2001 and the requirements of authorities having jurisdiction.

2.11 PRESSURE-RELIEF DEVICE

A. Each clean agent fire extinguishing system shall have an approved pressure-relief device, if required, that will release excess pressure safely in accordance with the cylinder test pressure.

2.12 NOZZLES



A. Discharge nozzles shall be of the approved type and shall have a 180° or 360° discharge pattern. Discharge orifices, and discharge orifice plates and inserts, shall be of a material that is corrosion resistant to the agent used and the atmosphere in the intended application. Special corrosion-resistant materials or coatings shall be required in severely corrosive atmospheres. Nozzles shall be predominately marked to identify the manufacturer as well as the type and size or the orifice. Frangible discs, blow-off caps, or other suitable devices shall be provided where clogging by external foreign materials is likely. These devices, when dislodged, shall not pose a danger to personnel and shall leave an unobstructed opening. Nozzles shall be as manufactured by Kidde, or equal.

2.13 SIGNS

A. Outside Protected Area

1. The sign shall read “WARNING - WHEN ALARM SOUNDS DO NOT ENTER THIS AREA. THE CLEAN AGENT FIRE EXTINGUISHING SYSTEM WILL DISCHARGE.”

B. Inside Protected Area

1. The sign shall read, “WHEN FIRE ALARM SOUNDS EVACUATE THE ROOM. THE CLEAN AGENT FIRE EXTINGUISHING SHALL DISCHARGE.”

2.14 MANUAL PULL STATIONS

A. The sign shall read “BY ACTIVATING THIS FIRE STATION THE CLEAN AGENT FIRE EXTINGUISHING SYSTEM SHALL ACTIVATE.”

2.15 OPERATING INSTRUCTIONS

A. Instructions shall be provided at each control station, clearly indicating the steps for system operation. The proposed legend for operating instructions shall be approved before installation. Instructions shall be embossed white letters on red rigid plastic backgrounds. Lettering shall be 0.25-inch high, minimum, for operating instructions, and shall be 1-inch high for identification of system operating devices and control valves.

B. Appropriate warning signs shall be affixed inside and outside each protected area and at every location where manual operation of the system may occur.

PART 3 EXECUTION

3.01 COORDINATE WITH OTHER TRADES

A. The Contractor shall coordinate for interface with lighting, ducts, mechanical equipment, and structural elements for the clean agent fire suppression system design, installation, and operation.

3.02 CODES AND STANDARDS

A. All equipment and work shall conform to NFPA 2001.

B. The Contractor shall install all clean agent fire suppression system components in accordance with the manufacturer’s instructions and good commercial practice.

3.03 STORAGE CYLINDER(S)

A. Storage cylinder(s) and all accessories shall be so located in an environment that is within the manufacturer’s recommendations and arranged that inspection, testing, recharging, and other maintenance activities are facilitated and interruption of protection and facility operation is held to a minimum.

B. Storage cylinder(s) shall be located as close as possible to or within the hazards they protect, but shall not be exposed to potential damage due to mechanical, chemical, or other causes. Where potentially damaging exposures might exist, suitable enclosures or guards shall be provided.

C. Storage cylinder(s) shall be securely installed and secured according to the manufacturer’s listed installation manual and in a manner that provides for convenient individual servicing or content weighting.

D. Where storage cylinder(s) are manifolded, automatic means such as a check valve shall be provided to prevent agent loss if the system is operated when and containers are removed for maintenance.

3.04 PIPING



A. All pipe length must be reamed, blown clear, and swabbed with suitable solvents to remove burrs, rill varnish, and cutting oil before assembly.

B. The piping distribution system shall be in accordance with NFPA 2001 and the manufacturer’s recommendations. Special care shall be taken in the placement and orientation of tee connections.

C. Pipe shall be kept clean during installation by means of plugs or other approved methods. When work is not in progress, open ends of piping shall be securely closed to prevent entry of water and foreign matter.

D. Piping shall be inspected before placing into position and shall be inspected, tested and approved before concealment.

E. Piping shall be painted red with stencil identification. Their location shall not be concealed prior to approval.

F. All closed piping sections shall be equipped with a pressure relieving device to prevent entrapment of liquid. The location of these pressure relieving devices shall be such that the discharge from these devices will not injure personnel or pose a hazard.

G. The piping system shall be securely supported with due allowances for thrust forces and thermal expansion and contraction, and shall not be subjected to mechanical damage. The maximum allowable stress live for the conditions at which the piping and fittings are exposed shall not exceed 7 percent of the minimum yield strength or 25 percent of the minimum tensile strength, which ever is less. The type, spacing, location, and installation of the hangers and supports shall be in accordance with NFPA 2001.

H. Discharge nozzles shall be installed in such a manner that piping cannot become detached during discharge.

I. Changes in pipe size shall be through standard concentric pipe-reducing fittings.

J. Joint compound, tape or thread lubricant shall be approved by the manufacturer and shall be applied only to the male threads of the join.

3.05 VALVES

A. Valves shall be protected against mechanical, chemical, or other damage.

3.06 NOZZLES

A. The maximum height above the floor level for a single row of nozzles shall not exceed the manufacturer’s recommendations. Nozzles shall be located at least 12 inches ± 2 inches away from sidewalls. Nozzle orientation shall be pendent.

B. The area of coverage for the nozzles shall not exceed the manufacturer’s recommendations.

C. Nozzles shall be installed such that their orifices are no more than 6 inches ± 2 inches below the ceiling.

D. The 360° nozzles shall be located in the center of the hazard area, while the 180° nozzles shall be located in the middle of the sidewall with the orifices radiating outward into the hazard area.

E. Nozzles shall be mounted perpendicular to the ceiling surface.

F. Nozzle location shall be selected such that the discharge of agent shall not impinge on normal personnel working areas.

G. Nozzles shall not directly impinge on shelves, cabinet tops, or similar surfaces where loose objects could be present and become projectiles.

H. The discharge nozzle(s) shall be oriented in such a manner to optimize the agent dispersal.

I. The nozzle deflectors, if installed, shall be positioned to obtain maximum benefit.

3.07 ACCEPTANCE TESTS

A. Installation Acceptance Test

1. The Contractor shall verify that all openings that will reduce the effectiveness of the FM 200 fire suppression system have been properly sealed.

2. The completed systems shall be reviewed and tested by qualified personnel to meet the requirements of this specification, the drawings, and NFPA 2001. This test is intended to demonstrate that the operating and installation requirements of this specification have been met. All tests shall be conducted in the presence of the Engineer.



3. The nozzles and piping distribution system shall be inspected to determine conformance with this specification, the drawings, manufacturer’s recommendations, and NFPA 2001.

4. Piping joints, discharge nozzles, and piping supports shall be securely fastened to prevent unacceptable vertical or lateral movement during discharge.

5. During assembly, the piping distribution system shall be inspected internally to detect the possibility of any oil or particulate matter soiling the hazard area or affecting the agent distribution due to a reduction in the effective nozzle orifice area.

6. All agent storage cylinders shall be properly located and secured in accordance with this specification, the drawings, manufacturer’s recommendations, and NFPA 2001.

7. Each piping system shall be pneumatically tested with dry nitrogen or dry air at 150 psig for 10 minutes. There shall not be leakage or reduction in gauge pressure of greater than 20 percent. Piping being pressure tested shall be pressurized in increments of 50 psig.

8. A flow test shall be conducted, using nitrogen on the piping network to verity that flow is continuous, and that the piping and nozzles are unobstructed.

9. Each total flooding system shall have an enclosure integrity test. This test shall be performed using a blower door fan. The test shall be used to ensure that all required dampers, door bottom seals, weather-stripping, caulking, and foam sealant have been installed and that the areas protected will, in fact, contain the clean agent for the full 10 minutes required. This test shall be used to locate and then effectively seal any significant air leaks that could result in a failure of the enclosure to hold the specified agent concentration level for the required 10 minute time period. Additional tests shall be performed until the systems pass, at the expense of the Contractor who had to reseal the openings.

10. The clean agent fire suppression systems shall be functionally tested in accordance with this specification, the manufacturer’s recommendations, NFPA 2001, and in conjunction with Section 16720. Prior to this test the agent storage cylinder release heads shall be disabled and reconnected to a functional device in lieu of agent storage cylinder release mechanism. Testing of the following functions shall be demonstrated:

a. Supervisory switch

b. Pressure switch

c. Agent cylinder control head

11. All drawings shall be reviewed and stamped by a California State registered Fire Protection Engineer experienced in the design of clean agent fire suppression system.

END OF SECTION


SECTION 16770 PUBLIC ADDRESS SYSTEM

PART 1 GENERAL

1.01 REFERENCES

A. General

1. The publications listed below form a part of this Specification to the extent referenced.

2. Where a date is given for reference standards, the edition of that date shall be used. Where no date is given for reference standards, the latest edition available on the date of the Notice Inviting Bids shall be used.

B. American National Standards Institute

1. ANSI S3.3, Method for Measuring the Intelligibility of Speech Over Communications Systems.

C. National Fire Protection Association

1. NFPA 70, National Electrical Code

D. Factory Mutual Engineering and Research System (FM)

E. Underwriters Laboratories, Inc. (UL)

1. UL 464, Audible Signal Appliances

2. UL 1459, Telephone Equipment

3. UL 1604, Electrical Equipment for Use in Class I and II, Division 2 and Class III Hazardous Locations

4. UL 1638, Visual Signaling Appliances

1.02 SCOPE OF WORK

A. Contractor shall provide a system that is fully compatible and be integrated into with the existing (which is manufactured by Gai-Tronics, Hubbell) plant PA system. Contractor shall provide all necessary installation wiring, connections, modules, programming, and any and all devices as required for a fully integrated and operational system.

B. The Contractor shall complete the conceptual design as detailed on the drawings in full compliance with applicable requirements of CAL/OSHA and NFPA 70. The Drawings and Specifications are not intended to be a complete listing of all components required for the system. All auxiliary and accessory equipment necessary for system performance in compliance with the applicable codes shall be provided even if not specifically detailed on the Drawings or in these specifications. Preparation and submittal of detailed, project specific installation drawings (including but not necessarily limited to mounting, interconnection, wiring type details, supportive calculations, etc.) shall be included as a part of this work.

C. The Contractor shall coordinate the public address system with other related equipment and materials furnished by other suppliers under other sections of these Specifications.

D. The Contractor shall ensure that all equipment of the system is furnished, installed and connected in accordance with the manufacturer's instructions.

E. The public address system shall consist of the following major components: central amplifiers, speakers, and horns, communication interface modules as required to interface with existing Center Control Unit and other equipment, and conduit and conductor systems to provide interconnection of the system to ensure full system functionality.

F. The public address system shall be networked together over the plantwide fiberoptic network. Fiber optic cable systems shall be as specified in Section 16745, Fiber Optic Cable System.

1.03 SUBMITTALS

A. Shop drawings shall be submitted as required by Sections 01300, Submittals. As a minimum the shop drawings and instructions shall include the following:

1. Complete wiring diagrams.

Public Address System


2. Catalog data for all components of the public address system.

3. Project specific installation details including mounting heights and locations.

4. Operational details of all equipment

5. Point-to-point wiring diagrams

6. Complete conduit interconnection diagrams (conduit riser diagrams) including proposed routing and labeling of all conduits for the system. The diagrams may be developed with the assistance of the installing Contractor, but the Contractor shall be responsible for verifying and confirming wire count routing and conduit sizing.

7. Itemized list of spare parts furnished specifically for this project, including quantities, descriptions, and part numbers.

8. Plan drawings of all area structures requiring public address system installation. Drawings shall be to scale not less than ¼ inch to the foot. Plan drawings shall indicate proposed conduit routing of all conduits required for the complete Public Address system.

9. Submit anchoring requirements in conformance with Section 01640, “Seismic Design of Equipment and Equipment Anchorage.”


A. The Contractor shall:

1. Perform work (including design, installation, startup, testing and maintenance) of similar or greater complexity on at least five previous projects.

2. Be actively engaged in the type of work specified in this section for a minimum of 5 years.

B. All items of the public address system shall be listed as a product of a single public address system manufacturer under the appropriate category by UL, and shall bear the corresponding "U.L." label.

C. All materials shall be listed by UL or FM wherever standards have been established by those organizations.

D. Manufacturer's model numbers are included to provide an indication of the basic system component and features; however, the equipment furnished shall be inclusive of all requirements of the written text to the extent that the text specifies optional or additional features not included with the basic model number.

E. The Contractor shall provide a sound engineer. The sound engineer shall visit the site and perform a thorough evaluation of the ambient noise level and the effectiveness of the new public address system. The sound engineer shall provide a written report recommending any improvements and specify exactly the quantity and placement of additional equipment to accomplish a 10 dB margin of public address sound over ambient.

1.05 SYSTEM DESCRIPTION

A. The system shall have as a minimum the components as shown on the Drawings and as specified herein. Additional components shall be supplied as required to comply with the NEC (NFPA 70), at no additional cost to Metropolitan.

B. The public address system shall include microprocessor based controls, software, central amplifiers, speakers and horns, cable, wiring, conduit and all specified and/or required appurtenances and accessories. The system shall be capable of supervising and monitoring all system circuits and devices to acquire trouble information and to establish that the devices can respond. The system shall also conduct periodic self-diagnostics on the various subsystems and report failures.

C. Basic system functions shall be as follows:

1. Paging -- The capability to support alarm message and operator prioritized, directed one-way audio broadcast within and between zones.

2. Status Monitoring -- The capability to log change of state occurrences and execute diagnostics for alarm events, trouble conditions and operational state.

D. The system shall be capable of being expanded at any time up to the maximum capacity of the system as stated herein.

E. The system software shall be capable of being re-programmed in the field by a manufacturer’s authorized technician via a portable computer. All programmed information shall be stored in non-volatile memory.



F. The system shall be capable of logging and providing a hard copy of all system status messages to a remote printer.

G. The system shall consist of an existing Central Control Unit, located in the Main Control Building. This unit will communicate via fiber optic network cable as specified in Section 16745, Fiber Optic Cable Systems, and interfaces with the Switchgear Building PA equipment.

H. System Operation

1. The system shall provide operation utilizing desktop access panels and telephones located at multiple locations throughout the facility in accordance with the drawings.

1.06 FIELD ACCEPTANCE TEST BINDER

A. A system field acceptance test binder shall be prepared by the Contractor and submitted to the Engineer for approval. The purpose of this binder is to consolidate and organize the testing requirements and results for all components in the system.

B. A test summary tabulation shall be provided for each device control function in the project organized by room/area number. The tabulation shall include the following as a minimum:

1. Room/area number with a separate line for each device or control function.

2. Physical installation check-off box for each device and function.

3. Functional check-off box for each device and function.

4. Full acceptance check-off box for each device and function.

5. Comments box for each device switch and function.

1.07 FINAL DOCUMENTATION

A. The contractor shall submit the following final documentation in conformance with Section 01730, Operations and Maintenance Data prior to final acceptance of the system:

1. As-built documentation of the public address system.

2. Hardware maintenance documentation.

B. The final documentation shall be new documentation written specifically for this work, but may include standard and modified standard documentation. All standard documentation furnished shall have all portions that apply clearly indicated. All portions that do not apply shall be lined out.

C. The documentation shall contain all illustrations, detailed drawings, wiring diagrams, and instructions necessary for installing, operating, and maintaining the equipment. The illustrated parts shall be numbered for identification. All information contained shall apply specifically to the equipment furnished and shall only include instructions that are applicable. All such illustrations shall be incorporated within the printing of the page to form a durable and permanent reference document.

D. The requirements for the final documentation are as follows:

1. As-built documentation shall include all previous submittals, as described in this Specification, updated to reflect the as-built system. Any errors in or modifications to the system resulting from the field acceptance tests shall be incorporated in this documentation. As-built Drawing documentation shall include as a minimum; the following information:

a. Field wiring color code and identification tag.

b. Field wiring termination points.

c. Spare wire and control points.

2. The hardware maintenance documentation shall describe the detailed preventive and corrective procedures required to keep the public address system in good operating condition. A maintenance manual shall be furnished for all delivered hardware. The Hardware Maintenance Documentation shall include, as a minimum, the following information:

a. Operation Information - This information shall include a detailed description of how the equipment operates and a block diagram illustrating each major assembly in the system.



b. Preventive-maintenance Instructions - These instructions shall include all applicable visual examinations, hardware testing and diagnostic routines, and the adjustments necessary for periodic preventive maintenance of the system.

c. Corrective-maintenance Instruction - These instructions shall include guides for locating malfunctions. These guides shall include adequate details for quickly and efficiently locating the cause of an equipment malfunction and shall state the probable source(s) of trouble, the symptoms, probable cause, and instructions for remedying the malfunction.

d. Parts Information - This information shall include the identification of each replaceable or field-repairable module. All parts shall be identified on a list in a drawing; the identification shall be of a level of detail sufficient for procuring any repairable or replaceable part.

PART 2 PRODUCTS

2.01 GENERAL

A. All materials, equipment, accessories and devices covered by this specification shall be new, best suited for their intended use and shall conform to applicable and recognized standards for their use. Factors of safety shall be utilized throughout the design. Only heavy-duty industrial components rated to operate within the temperature ranges and other environmental conditions specified herein shall be used.

B. Equipment shall be the standard cataloged products of a single manufacturer, where practical.

2.02 EXISTING CENTRAL CONTROL UNIT

A. General

1. The existing Central Control Unit (CCU) is Gai-Tronics model GTD07036 and will provide annunciation, supervision and control for the system. The central control cabinet will connect to model GTK08038 Remote Central Amplifier Cabinet.

2.03 FIELD EQUIPMENT

A. Desktop Access Panel

1. A Desktop Access Panel shall have a 120Vac /240Vac power input. The desktop access panel shall be used to monitor system activity via a vacuum fluorescent display (VFD). The Desktop Access Panel shall include 17 configurable push buttons. Each push-button shall contain an LED that can be configured to provide system status information. The Desktop Access Panel shall include the following.

a. Handset equipped with an integral pressbar to provide page communications

b. Internal speaker to provide monitoring of system page activity

c. Graphic interface shall display status messages from the system control unit in a text format

d. Alarm to alert personnel of updated system status

2. Acceptable unit shall be GAI-Tronics Model 12576-315 or equal.

B. Remote Central Amplifier Cabinet model GTK08038 or equal.

1. One (1) 600 watt central amplifier (300 watts per channel) shall be included for speaker loop connection.

2. Multi-Mode Fiber Equipment shall be included to interface with the existing CCU model GTD07036

3. Audio Distribution/Monitoring Module (ADM) shall be included to distribute speaker loop outputs and

4. The module shall supervise for loop integrity and ground fault detection.

C. Speakers and Accessories

1. For outdoor applications, provide speakers and horns, connectors, and boxes that are approved for the application.

2. Compact Paging Speaker with Integral Driver

a. Re-entrant horn shall be equipped with a built-in driver. Frequency response shall be 350-7,500 HZ and dispersion shall 130 degrees nominal. Horn assembly shall be constructed of aluminum alloy and equipped with a stainless steel mounting bracket. Sound pressure level shall average 107 dB at 4 ft. (1.2 m) on axis at



12 watt. 70V Transformer shall be included with a power handling capacity shall be 15 watts. Speaker shall be GAI-Tronics Model HP15T-70, or equal.

2. Cone Speakers

a. Speaker mounting shall utilize a metal mounting bracket, which will easily attach to a standard electrical switch box. The loudspeaker shall be 8” in diameter with a power handling capacity of 15 watts. 70V Transformer shall be included and the unit shall have a built-in volume control. The speaker shall be GAI-Tronics Model 801A-70, or equal.

D. Fiber Optic Interface Unit

1. Provide a Fiber Optic Interface Unit to connect the remote handsets/speakers for each area to the Central Control Unit located in the Main Control Building via the Fiber Optic Cable System specified in Section 16745. The Fiber Optic Interface Unit shall be used in pairs to provide a full-duplex, point-to-point data link using multi-mode fiber optic cable. One unit shall be located in the Communications panel for each remote area and the other shall be located in the Central Control Unit.

2.04 CABLE AND WIRING

A. All cable shall be manufactured to meet the requirements of IEEE-383 Flame Test, NEC 340, and UL subject 1277.

PART 3 EXECUTION

3.01 INSTALLATION

A. Locate and install components at locations indicated on the Drawings as required by the Contractor, and in accordance with the manufacturer’s recommendations. Control and access panels shall be mounted with sufficient clearance for observation and testing. All junction boxes shall be clearly marked for easy identification. All wiring shall be in conduit. All devices, conduit, junction boxes, etc., shall be securely hung and fastened with appropriate fittings per Section 16110, Raceways. Provide positive grounding throughout the entire system in conformance with Section 16450, Grounding.

B. Conduit and wire requirements are not shown on the Drawings. The system shall be wired in conduit throughout (including low voltage connections) in accordance with the manufacturer’s diagrams and requirements, the system interconnect diagram shown on the Drawings, the remainder of Division 16 specifications, and submittal data. Final connections in the public address system shall be made by or under the direct supervision of the Contractor.

3.02 MANUFACTURER’S SERVICE DURING INSTALLATION

A. The equipment manufacturer shall provide technical guidance during and/or following construction to perform a check-out of the system. At such time, a factory-trained technician shall apply system power and make all necessary adjustments.

B. Training: Provide training of two 2-hour classes for plant personnel in the operation and maintenance of all equipment of the system. Classes shall be coordinated with Metropolitan staff to cover all personnel shifts.

3.03 CORRECTION OF DEFICIENCIES

A. All deficiencies in work and/or items not meeting specified testing requirements shall be corrected in order to meet specification requirements at no additional cost to Metropolitan.

3.04 SYSTEM PERFORMANCE CRITERIA

A. A measurement program shall be undertaken upon job completion to verify conformance of the frequency response and coverage patterns of the loudspeakers within the specifications. The frequency response and coverage patterns shall be measured with a sound level meter and a visual display unit such as a Real Time Audio Spectrum Analyzer to provide a fast and accurate indication of the system frequency response characteristics.

B. The amplification apparatus signal input shall be a source of “noise” having constant energy in each and every octave within the bandwidth of 31.5 Hz to 20 kHz, such a noise source being termed “pink” noise.

C. The frequency response of the loudspeakers shall be measured on-axis at the normal listening distance.

D. Measurements of the uniformity of coverage specified hereafter shall be made using the above apparatus with the sound source filtered to produce an octave band centered on 2 kHz. The sound level meter shall be set to measure, with a high degree of rejection, all other frequencies.



E. The system frequency response shall be +/-2 dB from 300 Hz to 4 kHz. The contour of the low and high frequency response shall be varied to obtain the most natural performance.

F. The system shall provide normally acceptable speech intelligibility, described as 98 percent of sentences heard correctly and single digits understood in the presence of background speech interference levels up to 65 dBA at any location within the physical area serviced by the system. This shall be verified by at least a 75 percent score on the Phonetically Balanced Monosyllabic Word Intelligibility Test per ANSI S3.3. This intelligibility criterion shall apply for any valid initial source such as a microphone, a radio or a tape player.

3.05 FINAL INSPECTION AND ACCEPTANCE TESTING

A. The Contractor shall demonstrate the operation of the total system using the equipment specified herein. Subjective listening tests may be conducted and shall be considered as criteria for the system acceptance. If is evident that the system is not functioning properly, the Contractor shall be required to demonstrate the performance of any of the components to ascertain their acceptability. In order to perform these tests, the Contractor shall make available on-site as a minimum, the following equipment:

1. Digital volt-ohm multi-meter with at least one meg-ohm input

2. Audio frequency function generator with log sweep functions

3. Pink noise generator

4. Sound level meter with 1/2-inch precision microphone

5. Real time analyzer with a minimum of two sample rates

6. Oscilloscope

7. Circuit continuity tester

8. Circuit phase tester

9. Portable loudspeaker and amplifier with pink noise generator

10. Other equipment as deemed necessary

B. The above equipment shall comply with the performance specifications listed herein or shall permit the performance evaluation of any item of equipment specified herein.

C. If the subjective and performance testing of the system indicates the need for further testing and adjustments due to system malfunctions, the Contractor shall make any adjustments necessary to rectify the situation and retest the system at no additional cost to Metropolitan.

END OF SECTION