HDEC01-12-R-0002 Amend 01 New London Package.pdf

HDEC03-12-R-0002 New London - Amendment 02 Attachment 1 – Q&A #2

New London Q&A 2

Q: Specification 10451-2 calls for an electronic number indicator kit #51310. This product has been discontinued. Please specify a replacement.

A: Revise Specification 10451 – 2.2.2 as follows;

a. Electronic number indicator kit: Model 71513, includes number display, dispenser with sign, transformer, wire with hardware, pushbuttons, and decals.

b. Dispenser stand: Model 69818.

c. Take-A-Number tickets: Model 96265.

Q: Do you have a wind load in PSF for the overhead doors in order to size correctly? Please see attached PDF.

A: Response: See specification 08331 - 1.3.4.a.(1) for wind loading criteria.

Q: Reference Plans M1.1 and M1.2. Which ducts are lined and which ducts are not to be lined? Please clarify.

A: Per Section 15890.2.2.d "All exposed round duct shall be... double wall Insulated... " and is therefore factory insulated and need not be further lined or insulated. All other supply and return air duct is to be externally insulated (15290.3.2.3.) There is no requirement for field applied duct liner.

Q: The Specification for Medium & High Pressure Steam piping (page 15520-3 paragraph

2.1a) says: (& I’m paraphrasing) “use schedule 80 for sizes 16”. My question is what type of pipe (thickness) is to be used for the other sizes? There did not appear to be an 16” regardless. An option to use copper pipe is given, but it is more expensive. Please clarify.

A: Section 15520.2.1.a: Delete the words ", for sizes 16 inch" All high pressure steam piping shall be schedule 80.

Q: To further complicate the matter, the specification for the underground steam calls for schedule 40 (page 15511-3 paragraph 2.4). Is this correct? Does the engineer want a thicker pipe above ground than he does underground?

A: Section 15511.2.4: Change to read: Piping in the conduit shall be , steel, ASTM A-53, Grade B, ERW. Steam and Condensate lines shall be extra strong (XS is the same as Sch. 80 ). Pipe joints shall be welded in accordance with the Pressure Piping Code, ASME/ ANSI B 31.1.

Q: Reference Sheet C7.1 Electrical Site Plan. Note 3 indicates “new 125 KVA Diesel

Generator. Refer to Electrical One-Line Diagram.” Electrical One-Line diagram on E5.1 shows a 60KW/75KVA generator and Section 16231 2.5.1 indicates Natural Gas.

Please verify generator size and fuel type.

A: See revised specification 16231 “Diesel-Engine Driven Generator Sets” attachment 6.

Q: There is a discrepancy in the generator size required. Drawing C7.1, Electrical site plan, references a new 125 kVA diesel generator. Drawing E5.1, electrical one-line diagram, references a 60 kW natural gas generator. Please clarify.

A: See revised specification 16231 “Diesel-Engine Driven Generator Sets” attachment 6.

Q: See Sheet A1.1. Room 16A shows “4L03” lockers. Section 10505 only indicates “4L01” and “4L02.” Can you indicate what type “4L03” lockers are?

A: See attachment No.5 of this addendum.

Q: The plans call out for the removal of an existing underground storage tank. We can not determine from the drawings the size of the tank or what materials were stored in the tank. If there were hazardous materials stored, then the removal of the tank could be quite expensive. Please provide more information so that this item can be accurately priced.

A: The underground storage tank has been remediated by the local Navy Sub Base New

London. It is assumed that it does not present a hazard for the General Contractor.

However the tank remains underground on the Commissary site and must be removed as part of the work for construction of the Commissary facility.

Q: The solicitation requires that Key Subcontractors must be listed and provide past performance of similar projects and show an ability to mobilize and perform at the project location. Does this mean that we are to list multiple subcontractors for each trade that may be used should we be awarded the project? Or does this mean that we are to select one contractor for each trade that we will be bound to use if we are awarded the contract?

A: Key subcontractors identified in your proposal are accepted by means of contract award.

After contract award all changes to key subcontractors must be approved by the contracting officer.

Q: Reference Drawing. E7.4, "MECHANICAL EQUIPMENT CONNECTION SCHEDULE." General note. Reference; exhaust fan wiring as shown appears to be grossly oversized. Note 10 calls for “HOA” switches to be wall mounted in room 20A.

Generally “HOA” switches are a component of a magnetic motor starter and integrated into the starter. Does this mean that magnetic motor starters need to be provided for the exhaust fans and if so what type of starters?

A: Install exhaust fan wiring and "HOA" switches as indicated on drawings.

Q: Rooftop Unit schedule note #4 calls out Vibration Isolation spec15240. It is not with the specs. Please advise.

A: We will add this specification section. I have added this as item to the addendum.

Q: Reference Drawing E5.1 "Electrical One-Line Diagram." The electrical characteristics and construction specifications for the 1000kVA utility transformer shown on drawing E5.1 serving the building has not been specified other than the size and secondary voltage. This is a major item for electrical requirements of this job. Please advise.

A: The pad mounted 1000KVA transformer is specified in spec section 16271.

Q: Sheets A4.1 & A4.2 show DCU-1 through DCU-6. There is no DCU-6 on the Mechanical

Schedule (M3.1) or indicated on the M Drawings. Please verify.

A: Response: Delete DCU6 from sheet A4.2.

Q: During the pre-proposal conference, there were discussions regarding options for lay-down/staging areas and concerns resulting from other work ongoing in the area. Has this been addressed?

A: The General Contractor shall determine their staging area for lay-down and construction management trailers from the area inside the construction limit line. This area shall be fenced and secured from the balance of construction as well as undisturbed areas adjacent to the Commissary project.

Q: Regarding Past Performance:

Case 1: If the offeror is a subsidiary without past performance, but the parent company has already past performance, Would it be considered the past performance of the parent company?.

Case 2: If the offeror is a joint venture between a company A with past performance and a company B without past performance. The past performance considered will be the one in company A

A: Criteria for relevant past performance is established in Section L, Part III of this solicitation. Section L, Part III, section (b) addresses relevance and Section L, PART III section (c) addresses teaming arrangements.

Q: According to the specification 15935 Building HVAC systems controls it seems that the units are all controlled by a programmable Honeywell thermostat. But is spec section 15971-1 refrigeration monitoring & control systems (RMCS). I’ve had mechanical contractors requesting prices for this project stating we are flat spec’d as RCMS. There is also a spec section 15971-8 seems to have a sequence of operations.

1. Are most of these units controlled by thermostats?

a. If this true there would be no need for a building automation system (BAS)

b. Or is the intention to monitor/control these units along with the programmable thermostat?

2. Did you mean to put RCMS instead of RMCS?

3. I do not see an acceptable vendors list for building automation. Will Automated

Logic’s BACnet protocol WebCTRL software be an acceptable bidder on this project?

A: The RMCS is to be furnished as a part of the product refrigeration system. Please

15971.2.2.M for controlled equipment. This is especially developed for refrigeration applications so the Automated Logic equipment will not be acceptable.

20 APR 2012

ADDENDUM NO. 1

New Commissary Facility NSB New London, Connecticut DeCA Project No. DE08MP03

TO THE SPECIFICATIONS

1. Section 10451 “QUEUING SYSTEMS”: Revise article 2.2.2 as follows;

a. Electronic number indicator kit: Model 71513, includes number display, dispenser with sign, transformer, wire with hardware, pushbuttons, and decals.

b. Dispenser stand: Model 69818.

c. Take-A-Number tickets: Model 96265.

2. Section 10505 “METAL LOCKERS”: Add article 2.6; 4L03 – LOCKER, CLOTHING, SIX TIER (See Attachment No.5)

3. Section 10520 “FIRE PROTECTION SPECIALTIES”: Eliminate Section in its entirety and replace with attached revised Section 10520. Changes are to format and paragraph numbering (See Attachment No. 2).

4. Section 15140 “SUPPORTS AND ANCHORS”: Revise articles 2.5.c and 2.5.d; add “Construct equipment curbs in accord with 15240 VIBRATION ISOLATION AND SEISMIC RESTRAINT.”

5. Section 15240 “VIBRATION ISOLATION AND SEISMIC RESTRAINTS”: Add specification (See Attachment No. 7)

6. Section 15520 “Steam and Steam Condensate Piping”: Revise article 2.1.a as follows;

Delete the words ", for sizes 16 inch" All high pressure steam piping shall be schedule 80.

7. Section 15511 “Underground Piping Conduit”: Revise article 2.4 to read “Piping in the conduit shall be , steel, ASTM A-53, Grade B, ERW. Steam and Condensate lines shall be extra strong (XS is the same as Sch. 80 ). Pipe joints shall be welded in accordance with the Pressure Piping Code, ASME/ ANSI B 31.1.”

8. Section 15781 “PACKAGED ROOFTOP AIR CONDITIONING UNITS”: Revise article 2.4.e;

change referenced section to 15240 VIBRATION ISOLATION AND SEISMIC RESTRAINT.

9. Section 15783 “PACKAGED DUAL PATH DEHUMIDIFIERS”: Replace article 2.5.e with “Roof mounting curb: 14 inches (350 mm) high galvanized steel, channel frame with gaskets, nailer strips, insulated, top to be level, designed in accord with Section15240 VIBRATION ISOLATION

AND SEISMIC RESTRAINT.”

10. Section 16640 “CATHODIC PROTECTION”: Add specification section (See Attachment No. 3).

11. Section 16231 “DIESEL-ENGINE DRIVEN GENERATOR”: Replace Section in its entirety with attached revised Section 16231 (See Attachment No. 6).

TO THE DRAWINGS

1. Drawing C7.1: Revise note #2 to state the following: “2. New pad mounted transformers, 1500 KVA, 15 KV Primary, 480/277 volt, 3 PH, 4W, Secondary. Supplementary Drawing SD-E4.3A (See Attachment No. 4).”

2. Drawing C7.1: Revise note #3 to indicate a 75 KVA diesel generator in lieu of the 125 KVA diesel generator.

3. Drawing A1.2: Contractor to provide final electrical connections for GF/CI battery chargers that are part of government furnished equipment (3 each 1R05-B and 1 each 1R06-A) located in MHE Charging Area (RM. 38).

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4. Drawing A4.2: Delete DCU6

5. Drawing A5.1 EXTERIOR COLOR SCHEDULE: Add Spandrel Glass Color “Viracon – Viraspan, Subdued Bronze V905 – www.viracom.com – (507) 451-9555.

6. Drawing A8.5: Provide Nevamar “Carmel Sagawood” WM-8-350T plastic laminate on millwork details B, C, D, E, E, G, H, J, K, and L in lieu of plastic laminate PL-1. Other plastic laminate and solid surfacing colors shall remain as currently detailed.

7. Drawing A10.4, Detail F: Provide plastic laminate PL-3 at cashier’s window counter.

8. Drawing FA1.1: Add the requirement for providing a horn strobe over the wall mounted fire department connection point, located on the front of the building near column line C.7. Refer to drawing FP1.1 for actual installed location of the fire department connection.

9. Drawing FA1.2: Add the requirement for providing a manual pull station and a wall mounted fire alarm strobe, in each of the two roof top refrigeration mechanical centers. Refer to drawing MR1.1 for the roof top refrigeration mechanical center locations.

10. Drawing FP1.1: Add the requirement for providing a dry-pipe sprinkler system, from Zone 1 wet pipe sprinkler system, in the two roof top refrigeration mechanical centers. Refer to sheet MR1.1 for roof top refrigeration mechanical center locations.

11. Drawing E4.3: Add pad mount electrical transformer detail per Supplementary Drawing SD-E4.3A (See Attachment No. 4).

12. Drawing E5.1: Feeder Schedule; revise Note 1 to 4” conduits in lieu of 5” conduits

13. Drawing E7.1: Light Fixture Schedule; revise the bottom of fixture mounting heights of fixtures L, L1 and L2 to 15’-0” from the current 14’-0”.

END OF ADDENDUM NO. 1

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CONSTRUCTION ISSUE

New Commissary Facility NSB New London, Connecticut

March 2011

FIRE-PROTECTION SPECIALTIES

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SECTION 10520

FIRE-PROTECTION SPECIALTIES

PART 1 - GENERAL

1.1 SUMMARY

1.1.1. Section Includes

a. Portable fire extinguishers.

b. Fire extinguisher cabinets.

c. Accessories.

d. Signage.

1.2 SUBMITTALS

1.2.1. Product Data

a. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for fire-protection specialties.

b. Fire Extinguishers: Include rating and classification.

c. Cabinets: Include roughing-in dimensions, details showing mounting methods, relationships of box and trim to surrounding construction, door hardware, cabinet type, trim style, and panel style.

1.2.2. Submittal List

Reference Submittal Item Quantity Action

1.2.1 Product Data X R

X Submit quantity specified in Division 1 Section “Administrative Requirements.”

R Review each submittal, mark to indicate action taken, and return.

1.3 QUALITY ASSURANCE

1.3.1. Source Limitations

a. Obtain fire extinguishers and cabinets through one source from a single manufacturer.

1.3.2. NFPA Compliance

a. Fabricate, install, and label fire extinguishers to comply with NFPA 10, "Standard for Portable Fire Extinguishers."

1.3.3. Fire Extinguishers

a. Listed and labeled for type, rating, and classification by an independent testing agency acceptable to authorities having jurisdiction.

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PART 2 - PRODUCTS

2.1 MANUFACTURERS

2.1.1. Basis-of-Design Products

a. To establish the significant qualities related to type, function, dimension, in-service performance, physical properties, appearance, and other characteristics for purposes of evaluating comparable products of other manufacturers, a specific manufacturer's product is named and accompanied by the words "basis of design," including make or model number or other designation. Subject to compliance with requirements, provide either the named products or equal products.

b. Basis-of-Design Products: J.L. Industries, Inc.

(1) Unless otherwise indicated provide the following:

(a) Portable Fire Extinguisher: Cosmic 10E.

(b) Fire-Protection Cabinet: Ambassador – Steel, Model 1017, door style S21 solid with pull handle.

(c) Mounting Bracket: MB846.

(2) Where Type K is indicated provide the following:

(a) Portable Fire Extinguisher: Saturn 15.

(b) Fire-Protection Cabinet: Ambassador – Steel, Model 2012, door style S21 solid with pull handle.

(3) Signage:

(a) Wall surface: Decal, 11-3/4- by 3-1/2-inches, vertical, red and white, FIRE EXTIGUISHER, #DRFA.

(b) Cabinet Door: Die cut, ¾ by 18-inches, vertical, red, FIRE EXTINGUISHER, #LDCVRFE.

2.2 MATERIALS

2.2.1. Cold-Rolled Steel Sheet

a. ASTM A 1008/A 1008M, Commercial Steel (CS), Type B.

2.3 PORTABLE FIRE EXTINGUISHERS

2.3.1. Unless Otherwise Indicated Provide Multipurpose Dry-Chemical Type

a. UL-rated 4A:60BC, 10-lb nominal capacity, in enameled-steel container.

2.3.2. Where Type K Is Indicated Provide Wet-Chemical Type

a. UL-rated K, 6-liter. nominal capacity, with potassium acetate-based chemical in stainless-steel container;

with pressure-indicating gage.

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2.4 FIRE EXTINGUISHER CABINETS

2.4.1. Cabinet Construction: Non-rated

a. Provide manufacturer's standard box (tub), with trim, frame, door, and hardware to suit cabinet type, trim style, and door style indicated. Weld joints and grind smooth. Miter and weld perimeter door frames.

b. Cabinet Metal: Enameled-steel sheet.

c. Cabinet Type: Suitable for fire extinguisher.

d. Cabinet Mounting: Suitable for the following mounting conditions:

(1) Semi-recessed: Cabinet box partially recessed in walls of shallow depth to suit style of trim indicated.

e. Cabinet Trim Style: Fabricate cabinet trim in one piece with corners mitered, welded, and ground smooth.

(1) Exposed Trim: One-piece combination trim and perimeter door frame overlapping surrounding wall surface with exposed trim face and wall return at outer edge (backbend).

(2) Return trim with rolled edge.

f. Cabinet Trim Material: Manufacturer's standard, same metal and finish as door.

g. Door Material: Manufacturer's standard, steel sheet.

h. Door Style: Manufacturer's standard design, flush opaque panel, frameless, with no exposed hinges.

i. Door Construction: Fabricate doors according to manufacturer's standards, of materials indicated, and coordinated with cabinet types and trim styles selected.

j. Door Hardware: Provide manufacturer's standard door-operating hardware of proper type for cabinet type, trim style, and door material and style indicated. Provide either lever handle with cam-action latch, or exposed or concealed door pull and friction latch. Provide concealed or continuous-type hinge permitting door to open 180 degrees.

2.5 ACCESSORIES

2.5.1. Mounting Brackets

a. Manufacturer's standard steel, designed to secure extinguisher, of sizes required for types and capacities of extinguishers indicated, with plated or baked-enamel finish.

(1) Provide brackets for extinguishers not located in cabinets.

2.5.2. Signage

a. Identify bracket-mounted extinguishers with signage "FIRE EXTINGUISHER" decal applied to wall surface.

b. Identify fire extinguishers in cabinets with signage "FIRE EXTINGUISHER" die cut lettering applied to door.

2.6 FINISHES, GENERAL

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

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

c. Finish fire protection cabinets after assembly.

2.6.2. Appearance of Finished Work

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a. Variations in appearance of abutting or adjacent pieces are acceptable if they are within one-half of the range of approved Samples. Noticeable variations in the same piece are not acceptable. Variations in appearance of other components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast.

2.6.3. Cabinet and Door Finishes

a. Provide manufacturer's standard baked-enamel paint for the following:

(1) Exterior of cabinet, door, and trim.

(2) Interior of cabinets and doors.

2.7 STEEL FINISHES

2.7.1. Surface Preparation

a. Clean surfaces of dirt, oil, grease, mill scale, rust, and other contaminants that could impair paint bond using manufacturer's standard methods.

2.7.2. Baked-Enamel Finish

a. Immediately after cleaning and pretreating, apply manufacturer's standard two-coat, baked-enamel finish consisting of prime coat and thermosetting topcoat. Comply with paint manufacturer's written instructions for applying and baking to achieve a minimum dry film thickness of 2 mils.

(1) Color:

(a) Cabinets: Manufacturer’s standard white.

(b) Brackets: Manufacturer’s standard red.

PART 3 - EXECUTION

3.1 EXAMINATION

3.1.1. General

a. Examine walls and partitions for suitable framing depth and blocking where recessed and semirecessed cabinets are to be installed.

b. Examine fire extinguishers for proper charging and tagging.

(1) Remove and replace damaged, defective, or undercharged units.

c. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

3.2.1. General

a. Comply with manufacturer's written instructions for installing fire-protection specialties.

b. Install in locations and at mounting heights indicated or, if not indicated, at heights acceptable to authorities having jurisdiction.

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(1) Prepare recesses for cabinets as required by type and size of cabinet and trim style.

(2) Fasten mounting brackets to structure and cabinets, square and plumb.

(3) Fasten cabinets to structure, square and plumb.

c. Signage: Apply decals and die cut lettering at locations indicated.

3.3 ADJUSTING, CLEANING, AND PROTECTION

Adjust cabinet doors that do not swing or operate freely. Refinish or replace cabinets and doors damaged during installation. Provide final protection and maintain conditions that ensure that cabinets and doors are without damage or deterioration at the time of final acceptance.

END OF SECTION

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SECTION 16640

CATHODIC PROTECTION

PART 1. GENERAL

1.1 RELATED DOCUMENTS

1.1.1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

1.2.1. This Section includes Cathodic Protection for underground or submerged structures of ferrous metal.

1.2.1.1. Buried ferrous metal pipelines for natural gas and water service, including valves and fittings.

1.2.1.2. Valves or fittings of ferrous metal on buried nonmetallic pipelines for natural gas and water service.

1.2.2. The structures to be cathodically protected are shown on the contract drawings.

1.3 CATHODIC PROTECTION INSTALLATION AND PERFORMANCE REQUIREMENTS

1.3.1. Qualified Individual: Design, construction supervision, and testing of the cathodic protection and associated bonding, isolation, and coating of the structures shall be accomplished by an individual qualified under one of the following:

1.3.1.1. A Professional Engineer Registered or Licensed in one of the United States or Puerto Rico in the field of Corrosion Engineering, specializing in cathodic protection;

1.3.1.2. An individual Accredited by the National Association of Corrosion Engineers (NACE) as a Corrosion Specialist or as a Corrosion Technologist specializing in cathodic protection.

1.3.2. Design appropriate and economical cathodic protection for each structure in accordance with the NACE Recommended Practice for Control of Pipeline Corrosion. Include all bonding and isolation, and appropriate test stations. Design for not less than 20 years anode life expectancy.

1.3.2.1. Investigate existing conditions on site that affect cathodic protection, and research utility records of the Host Military Installation to determine the existence of other utilities and cathodic protection systems in the area that may influence, or be influenced by, the new protected structure(s).

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1.3.2.2. Conduct any tests that may be required in the design of the cathodic protection, furnishing all equipment, supplies, and labor for the tests. (Examples of tests that might be required are soil resistivity, current requirements tests, structure continuity tests, stray current tests.)

1.3.3. Furnish and install the cathodic protection equipment and materials as designed by the Qualified Individual, under his supervision.

1.3.4. Test the completed cathodic protection to demonstrate acceptable protective structure-to-soil potentials of not less than -0.85 volt, nor exceeding -2.0 volts, (Cu/CuSO4 electrode); with anode current flows not exceeding the current as designed for anode life expectancy.

1.3.5. Test the protected structure for “hot spots”, unprotected areas of structure, or interference from stray currents.

1.3.6. Check for cathodic interference on other structures in the vicinity, if deemed necessary by the Qualified Individual.

1.3.7. Make any adjustments or corrections that may be required to bring the protected structure to acceptable protection, or to eliminate interferences, and retest.

1.3.8. Furnish full reports of all tests, prepared and signed by the Qualified Individual.

1.3.9. SUBMITTALS

1.3.9.1. Qualifications and Credentials of the Qualified Individual. Submit verifiable evidence of the required engineering registration/license or NACE accreditation, for approval.

1.3.9.2. Design calculations supporting the cathodic protection design, and sketches indicating the proposed cathodic protection installations, for approval and record.

1.3.9.3. List of materials and equipment proposed for the cathodic protection installation, for approval and record.

1.3.9.4. Results of all tests performed before and after installation, in clear, typewritten tabular form, certified by the Qualified Individual, for permanent facility records.

1.3.9.5. Operation and Maintenance information. Include detailed recommendations for adjustments, maintenance testing and full descriptions of all parts for replacement purposes.

1.3.9.6. As-Built drawings: Record the locations of all wiring, connections, equipment and components of the cathodic protection system on the As-Built record drawings required under Division 1 Section, “Phase Turnover and Contract Closeout”.

1.3.10. SUBMITTALS

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1.3.10.1. Submit catalog data on all equipment and materials to be provided for the cathodic protection installation, showing conformance to these specification requirements. For Approval.

1.3.10.2. Submit test reports of all tests conducted on the cathodic protection systems. For Approval and permanent facility records.

1.3.10.3. Operation and Maintenance information, including spare parts information.

1.3.10.4. Submit Record Drawings: Record locations and sizes of anodes, test stations, insulators and the like on the record drawings as required in Division 1 Section “Phase Turnover and Contract Closeout”.

PART 2. PRODUCTS É

2.1 MANUFACTURERS

2.1.1. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:

2.1.1.1. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, manufacturers specified.

2.2 Sacrificial Anodes

2.2.1. Available Manufacturers

2.2.1.1. HARCO

2.2.1.2. Mesa Products

2.2.1.3. Brance-Krachy

2.2.2. Packaged Magnesium Anodes, H-1 Alloy:

2.2.2.1. Cast magnesium anodes of H-1 alloy, Grade A, in accordance with ASTM Standard B843, Alloy AZ63. Open Circuit Potential not less than 1.53 volts, and Current Efficiency not less than 45%, when tested in accordance with ASTM-G97 procedures.

a. H-1 magnesium alloy, Grade A: Aluminum 5.3-6.7%; Zinc 2.5-3.5%;

Manganese 0.15-0.7%; Silicon 0.10% max.; Copper 0.02% max.; Nickel 0.002% max.; Iron 0.003% max.; Other Impurities 0.30% max.; Magnesium – remainder to 100%.

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2.2.2.2. Lead wire of #12 AWG copper wire, insulated with type TW insulation or HMWPE insulation, 10 feet long, silver-soldered (45% silver) to the galvanized steel core of the magnesium anode, and sealed against moisture.

2.2.2.3. Anode centered in a cloth bag containing a backfill mixture of 75% hydrated gypsum, 20% bentonite, and 5% sodium sulfate.

2.2.2.4. Packaged for shipping and storage in a multiwall paper sack; palletized, and film-wrapped.

2.3 Test Stations

2.3.1. Available Manufacturers

2.3.1.1. Cott Manufacturing Company

2.3.1.2. C.P. Test Services

2.3.1.3. Handley Industries

2.3.2. Test stations shall be flush-to-grade design with sturdy plastic outer tube and well-sealing top cover, similar to “Fink” test stations by Cott Manufacturing . Terminals and connecting links shall be of nickel plated brass. Provide each test station with a minimum of 3 terminals and one link. Station shall include a locator magnet.

2.3.3. Provide three each of any special tools required for operation and maintenance of the test stations.

PART 3. EXECUTION

3.1 INSTALLATION OF PACKAGED MAGNESIUM ANODES

3.1.1. Handling: Keep packaged magnesium anodes dry and protect from physical damage until ready to install. Remove protective packaging carefully just before installation to avoid damage to the cloth backfill sack or lead wire. Never handle the anode by its lead wire. When lowering the anode into the earth, support its weight with a “sling” of rope or fabric until it is resting on the bottom of the hole.

3.1.2. Location: Space anodes evenly over the extent of the protected structure; if one anode is required, it should be near the midpoint of the structure.

3.1.3. Bell Hole: Provide a bell hole for the anode that is to one side of the structure to be protected, deep enough that the entire anode will be lower than the lowest part of the structure. Minimum separation of the anode from the structure shall be 12 inches. Over excavate sufficiently so that all large rocks and other foreign matter can be removed from the vicinity of the anode.

Segregate the backfill so that the backfill close to the anode or its lead wire contains no debris or stones larger than 1/2 inch, to avoid damaging the anode or wire.

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3.1.4. Wiring: Anode lead wires and wires for contact to the structure shall be installed with sufficient slack that tamping the backfill will not place strain upon the wires or the wire connections.

Place wires in the trench in such a way that they are not likely to be damaged if the structure has to be dug up in the future.

3.1.4.1. Connecting to the Structure: All connections to the structure shall be exothermically welded (Cadweld, Thermoweld) to the structure. The weld and all exposed metal of the structure and the wire shall be thoroughly insulated and protected, using a plastic weld cap filled with mastic. Follow instructions of the weld manufacturer explicitly. The structure wire connections for the anode current and for testing must be separate welds separated by at least 12 inches.

3.1.4.2. Connecting to Test Stations: Connect to test station terminals with at least 10 inches of slack inside the test station, so that the entire terminal board can be removed for servicing or testing. Coil the slack wire compactly below the terminal board. Ensure that all terminal connections are clean and bright, and made up tightly. Expose no more of the copper wire than necessary to make the connections.

3.1.5. Backfilling: When backfilling the anode, after about 12 inches of backfill cover has been placed, activate the anode by pouring 5 gallons of clean water slowly over the anode site to moisten the anode, the prepared backfill inside the cloth bag, and the earth around the anode.

3.2 INSTALLATION OF TEST STATIONS

3.2.1. Avoid placing test stations directly above anodes or directly above the protected structure. Place test stations 18 to 24 inches off the centerline of the protected structure, and at least 5 feet horizontally from the anode. Place the top of the station flush with pavements, or 1/2 inch above grade if unpaved. The earth directly underneath a test station should be native backfill, so it can be used for earth contact for testing purposes in case the surrounding area is paved or covered.

3.3 TESTING

3.3.1. Structure-to-Soil Potential Measurements

3.3.1.1. Be sure your test lead connection to the structure makes good contact to metal. Use abrasive paper or a file to clean tarnish or soil from any connection point. Do not use the anode wire as a structure contact; use an independent structure contact wire at the test station.

3.3.1.2. To insure good soil contact at the tip of the copper/copper sulfate reference electrode, moisten the soil slightly (about 1/2 cup of clean water) at the point of contact.

Place the reference electrode on the soil as close to the vertical centerline of the structure as possible.

3.3.1.3. Record the negative potential of the pipe to the soil, to 3 significant figures.

3.3.2. Anode Current Measurements

3.3.2.1. Positive current flow in the anode lead is from the structure to the anode.

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CATHODIC PROTECTION

16640 - 6

3.3.2.2. Record current to 3 significant figures. Record a sample structure-to-soil potential reading taken simultaneously with the current reading, to ensure that the insertion of the ammeter has not altered the protective current level.

3.3.3. Testing Insulating Couplings and Unions

3.3.3.1. Presence of a potential difference across the union or coupling is usually satisfactory evidence that the insulator is intact; but lack of a potential difference is inconclusive.

3.3.3.2. If the potential difference is zero or very small, test the insulator with a Test Instrument designed for the purpose, or with a battery and magnetic compass. Apply the battery voltage across the insulator with test leads (ensure good contact on both sides of the insulator), while noting any deflection of the magnetic compass near the insulator.

Keep the battery leads close together and as far away from the compass as possible, since some current may flow in the leads through a parallel path around the insulator; i.e., through earth. If the leads are near the compass, their magnetic field may affect the compass. A current through a defective insulator will produce a magnetic field and deflect the compass pointer.

3.3.4. Test Reports:

3.3.4.1. Record all tests and corrective actions. Provide a test report, clearly typed, showing all tests and numerical results, identifying the protected structures tested, persons involved in the tests, equipment used, and the date the tests and corrective actions were accomplished..

END OF SECTION 16640

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ATTACHMENT NO. 3

2.6 4L03 – LOCKER, CLOTHING, SIX TIER

2.6.1. Basis-of-Design Product

a. Republic Storage Systems Company; All-Welded Ventilated Lockers.

2.6.2. Locker Arrangement

a. Six-High Box Locker

b. Size of each locker: 12 inches wide by 18 inches deep by 60 inches high.

c. Size of each locker compartment: 15 inches wide by 18 inches deep by 12 inches high.

2.6.3. Body

a. Assembled by welding body components together. Fabricate from cold-rolled steel sheet with thicknesses as follows:

(1) Tops and Bottoms: 0.0528 inch (16 gage) thick, with single bend at edges.

(2) Backs: 0.0428 inch (18 gage) thick.

2.6.4. Perforated Sides

a. Fabricated from 0.0528-inch- (16 gage) thick, cold-rolled steel sheet with manufacturer's standard diamond perforations.

2.6.5. Frames

a. Channel formed; fabricated from 0.0528-inch- (16 gage) thick, cold-rolled steel sheet or 0.0966-inch- (12 gage) thick steel angles; lapped and factory welded at corners; with top and bottom main frames factory welded into vertical main frames. Form continuous, integral door strike full height on vertical main frames.

2.6.6. Perforated Doors

a. One-piece, fabricated from 0.0677-inch- (14 gage) thick, cold-rolled steel sheet with manufacturer's standard diamond perforations; formed into channel shape with double bend at vertical edges and with right-angle single bend at horizontal edges.

2.6.7. Hinges

a. Welded to door and attached to door frame with not less than 2 factory-installed rivets per hinge that are completely concealed and tamper resistant when door is closed; fabricated to swing 180 degrees.

(1) Knuckle Hinges: Steel, full loop, 5 knuckles, tight pin; 2 inches high. Provide 2 hinges for each door.

2.6.8. Recessed Door Handle and Latch

a. Stainless-steel cup with integral door pull, recessed so locking device does not protrude beyond face of door; pry resistant.

(1) Single-Point Latching: Nonmoving latch hook with steel padlock loop that projects through recessed cup and is finished to match metal locker body.

(a) Latch Hook: Equip each door with one latch hook, fabricated from 0.120-inch nominal-thickness steel sheet; welded midway up full-height door strike; with resilient silencer.

2.6.9. Equipment

a. Equip each metal locker with identification plate and the following, unless otherwise indicated:

2.6.10. Accessories

a. Continuous Sloping Tops: Fabricated from minimum 0.0428-inch- (18 gage) thick, cold-rolled steel sheet; approximately 20-degree pitch.

June 2010

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ATTACHMENT NO. 4

(1) Closures at Exposed Ends: Hipped-end type.

b. Filler Panels: Fabricated from 0.0428-inch- (18 gage) thick, cold-rolled steel sheet.

2.6.11. Finish

a. Baked enamel.

(1) Color: As indicated.

June 2010

HDEC03-12-R-0002 New London Amendment 02

SECTION 26 32 14

DIESEL-ENGINE DRIVEN GENERATOR SETS

(Edited from DeCA June 2011 Design Criteria)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Packaged diesel-engine generator sets with the following features and accessories:

a. Battery charger.

b. Day tank.

c. Engine-generator set.

d. Muffler.

e. Exhaust piping external to set.

f. Outdoor enclosure.

g. Remote annunciator.

h. Remote stop switch.

i. Starting battery.

B. Related Sections:

1. Division 16 Section Transfer Switches for transfer switches including sensors and relays to initiate automatic-starting and -stopping signals for engine-generator sets.

1.2 DEFINITIONS

A. Operational Bandwidth: The total variation from the lowest to highest value of a parameter over the range of conditions indicated, expressed as a percentage of the nominal value of the parameter.

B. Steady-State Voltage Modulation: The uniform cyclical variation of voltage within the operational bandwidth, expressed in Hertz or cycles per second.

1.3 SUBMITTALS

A. Product Data: Include the following:

1. Data on features, components, accessories ratings, and performance.

2. Thermal damage curve for generator.

3. Time-current characteristic curves for generator protective device.

B. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

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ATTACHMENT NO. 5

1. Dimensioned outline plan and elevation drawings of engine-generator set and other components specified.

2. Design Calculations: Signed and sealed by a qualified professional engineer. Calculate requirements for selecting vibration isolators and seismic restraints and for designing vibration isolation bases.

3. Vibration Isolation Base Details: Signed and sealed by a qualified professional engineer. Detail fabrication, including anchorages and attachments to structure and to supported equipment.

Include base weights.

4. Wiring Diagrams: Power, signal, and control wiring.

C. Welding certificates.

D. Manufacturer Seismic Qualification Certification: Submit certification that day tank, engine-generator set, batteries, battery racks, accessories, and components will withstand seismic forces defined in Division 16 Section Seismic Controls for Electrical Systems. Include the following:

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

a. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified."

b. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational after the seismic event."

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

E. Qualification Data: For Installer and testing agency.

F. Certified summary of prototype-unit test report.

G. Certified Test Reports: For components and accessories that are equivalent, but not identical, to those tested on prototype unit.

H. Certified Summary of Performance Tests: Demonstrate compliance with specified requirement to meet performance criteria for sensitive loads.

I. Test Reports:

1. Report of factory test on units to be shipped for this Project, showing evidence of compliance with specified requirements.

2. Report of sound generation.

3. Field quality-control test reports.

J. Certification of Torsional Vibration Compatibility: Comply with NFPA 110.

K. Operation and Maintenance Data: For packaged engine generators to include in emergency, operation, and maintenance manuals. In addition to items specified in Division 01 Section Closeout Procedures, include the following:

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1. List of tools and replacement items recommended to be stored at the Project for ready access.

Include part and drawing numbers, current unit prices, and source of supply.

L. Warranty: Special warranty specified in this Section.

1.4 QUALITY ASSURANCE

A. Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project.

1. Maintenance Proximity: Not more than four hours' normal travel time from Installer's place of business to Project site.

2. Engineering Responsibility: Preparation of data for vibration isolators and seismic restraints of engine skid mounts, including Shop Drawings, based on testing and engineering analysis of manufacturer's standard units in assemblies similar to those indicated for this Project.

B. Manufacturer Qualifications: A qualified manufacturer. Maintain, within 200 miles of Project site, a service center capable of providing training, parts, and emergency maintenance repairs.

C. Source Limitations: Obtain packaged generator sets and auxiliary components through one source from a single manufacturer.

D. Product Options: Drawings indicate size, profiles, and dimensional requirements of packaged generator sets and are based on the specific system indicated.

E. Welding: Qualify procedures and personnel according to ASME Boiler and Pressure Vessel Code:

Section IX for welding exhaust-system piping.

F. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

G. Comply with NFPA 37.

H. Comply with NFPA 70.

I. Comply with NFPA 110 requirements for Level 2 emergency power supply system.

J. Engine Exhaust Emissions: Comply with applicable state and local government requirements.

K. Noise Emission: Comply with Host Military Base requirements for maximum noise level at adjacent property boundaries due to sound emitted by generator set including engine, engine exhaust, engine cooling-air intake and discharge, and other components of installation.

1.5 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division 03.

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1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of packaged engine generators and associated auxiliary components that fail in materials or workmanship within specified warranty period.

1. Warranty Period: Five years from date of Substantial Completion.

1.7 MAINTENANCE SERVICE

A. Initial Maintenance Service: Beginning at Substantial Completion, provide 12 months' full maintenance by skilled employees of manufacturer's designated service organization. Include quarterly exercising to check for proper starting, load transfer, and running under load. Include routine preventive maintenance as recommended by manufacturer and adjusting as required for proper operation. Maintenance agreements shall include parts and supplies as used in manufacture and installation of original equipment.

1.8 EXTRA MATERIALS

A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1. Fuses: One for every 10 of each type and rating, but not less than one of each.

2. Indicator Lamps: Two for every six of each type used, but not less than two of each.

3. Filters: One set each of lubricating oil, fuel, and combustion-air filters.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Caterpillar; Engine Div.

2. Generac Power Systems, Inc.

3. Kohler Co; Generator Division.

4. Onan Corp./Cummins Power Generation; Industrial Business Group.

2.2 ENGINE-GENERATOR SET

A. Packaged engine-generator set shall be a coordinated assembly of compatible components.

B. Power Output Ratings: Nominal ratings as indicated, with capacity as required to operate as a unit as evidenced by records of prototype testing.

C. Output Connections: Three phase, four wire.

D. Safety Standard: Comply with ASME B15.1.

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E. Nameplates: Each major system component shall be equipped with a nameplate to identify manufacturer's name and address, and model and serial number of component.

F. Fabricate engine-generator-set mounting frame and attachment of components to resist generator-set movement during a seismic event when generator-set mounting frame is anchored to building structure.

G. Mounting Frame: Adequate strength and rigidity to maintain alignment of mounted components without depending on concrete foundation. Mounting frame shall be free from sharp edges and corners and shall have lifting attachments arranged for lifting with slings without damaging components.

1. Rigging Diagram: Inscribed on metal plate permanently attached to mounting frame to indicate location and lifting capacity of each lifting attachment and generator-set center of gravity.

2.3 GENERATOR-SET PERFORMANCE FOR SENSITIVE LOADS

A. Meet ISO 8528-5 G3 requirements. Oversizing generator compared with the rated power output of the engine is permissible to meet specified performance.

1. Nameplate Data for Oversized Generator: Show ratings required by the Contract Documents rather than ratings that would normally be applied to generator size installed.

B. Steady-State Voltage Operational Bandwidth: +/- 2 percent of rated output voltage from no load to full load.

C. Steady-State Voltage Modulation Frequency: Less than 1 Hz.

D. Transient Voltage Performance: Not more than 10 percent variation for 50 percent step-load increase or decrease. Voltage shall recover and remain within the steady-state operating band within 0.5 second.

E. Steady-State Frequency Operational Bandwidth: Plus or minus 0.25 percent of rated frequency from no load to full load.

F. Steady-State Frequency Stability: When system is operating at any constant load within the rated load, there shall be no random speed variations outside the steady-state operational band and no hunting or surging of speed.

G. Transient Frequency Performance: Less than 5.0 percent variation for a 50 percent step-load increase or decrease. Frequency shall recover and remain within the steady-state operating band within three seconds.

H. Output Waveform: At no load, harmonic content measured line to neutral shall not exceed 2 percent total with no slot ripple. The telephone influence factor, determined according to NEMA MG 1, shall not exceed 50 percent.

I. Sustained Short-Circuit Current: For a 3-phase, bolted short circuit at system output terminals, the system shall supply a minimum of 300 percent of rated full-load current for not less than 10 seconds and then clear the fault automatically, without damage to winding insulation or other generator system components.

J. Excitation System: Performance shall be unaffected by voltage distortion caused by nonlinear load.

K. Start Time: Comply with NFPA 110, Type 10, system requirements.

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2.4 SERVICE CONDITIONS

A. Environmental Conditions: Engine-generator system shall withstand the following environmental conditions without mechanical or electrical damage or degradation of performance capability:

1. Ambient Temperature5 to 104 deg F.

2. Relative Humidity: 0 to 95 percent.

3. Altitude: Sea level to 1000 feet] .

2.5 ENGINE

A. Fuel: Fuel oil, Grade DF-2.

B. Rated Engine Speed: The engine RPM shall be consistent with providing the best performance and longest life for the engine.

C. Maximum Piston Speed for Four-Cycle Engines: 2250 fpm.

D. Lubrication System: The following items are mounted on engine or skid:

1. Filter and Strainer: Rated to remove 90 percent of particles 5 micrometers and smaller while passing full flow.

2. Thermostatic Control Valve: Control flow in system to maintain optimum oil temperature. Unit shall be capable of full flow and is designed to be fail-safe.

3. Crankcase Drain: Arranged for complete gravity drainage to an easily removable container with no disassembly and without use of pumps, siphons, special tools, or appliances.

E. Engine Fuel System:

1. Main Fuel Pump: Mounted on engine. Pump ensures adequate primary fuel flow under starting and load conditions.

2. Relief-Bypass Valve: Automatically regulates pressure in fuel line and returns excess fuel to source.

F. Coolant Jacket Heater: Electric-immersion type, factory installed in coolant jacket system. Comply with NFPA 110 requirements for Level 1 equipment for heater capacity.

G. Governor: Adjustable isochronous, with speed sensing.

2.6 ENGINE COOLING SYSTEM

A. Radiator: Rated for specified coolant.

1. Radiator Core Tubes: Nonferrous-metal construction other than aluminum.

2. Size of Radiator: Adequate to contain expansion of total system coolant from cold start to 110 percent load condition.

3. Fan: Driven by multiple belts from engine shaft.

B. Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent water, with anticorrosion additives as recommended by engine manufacturer.

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