UUUY_18-1073_SOW_REV1.pdf

Project # UUUY 18-1073 REV#1 Technical Specifications REV#1 Date: JULY 2018

31CES/CENM

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JULY 2018

U.S. AIR FORCE

31ST FIGHTER WING

31ST CES/CENM

AVIANO AIR BASE, ITALY

TECHNICAL SPECIFICATIONS FOR PROJECT

UUUY 18-1073 SUSTAIN CENTRAL CHILLER, SAN VITO

San Vito dei Normanni, (Brindisi), Italy

REVISION #1

31CES/CENM

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1 SCOPE OF WORKS.

- Replacement of 2ea chiller units.

- Replacement of 4ea Air Handler Units (AHU).

- Replacement of underground and above ground chilled water pipelines.

- Replacement of water softener and associated filters.

2 WORK SITE CONDITIONS:

2.a The Contractor is permitted to use reasonable quantities of available electricity and water at the work site. The Contractor shall alter characteristics and shall observe conservation practices at all times. All connections shall be the responsibility of the Contractor including restorations to initial conditions.

2.b Interruption of utilities. Utilities shall not be interrupted until approval is received from the Contracting Officer. Any such need shall be requested in writing by the Contractor at least 10 days in advance of the needed interruption. Requests for utility interruption shall indicate the type of utility to be interrupted, the type of operation requiring the interruption, the date and duration. To the maximum extent possible interruption shall be scheduled on weekends or U.S. holidays in order to minimize impact to base activities.

2.c Authorized work hours and days. Performance of work hereunder shall be from Monday through Friday excluding holidays from 08.00 to 17.00 hours. Work during weekends or holidays may be requested by the Contractor with a minimum of 10 days advance notice, however the Contracting Officer has the right to deny such request if reasons requiring week end and holiday work are not valid or for security or other necessities.

2.d Toilet facilities in the vicinity of the work site shall be available for Contractor use. The Contractor shall use facilities in a manner to maintain their state of cleanliness and hygiene.

2.e If welding is to be performed the Contractor shall ensure a welding permit is obtained from the Aviano Air Base Fire Department prior to performing welding operations.

2.f The Contractor shall not use base refuse containers to discard debris. All construction debris shall be discarded by the Contractor off base at authorized sites according to category of debris/refuse in strict observance of all host country laws, decrees and local regulations in force.

2.g The Contractor shall be responsible for ensuring all personnel engaged in the performance of this contract observe all host country laws concerning safety and in particular Italian D.Lgs. 81/08.

2.h At least 5 days prior to the pre-final inspection, the Contractor shall furnish to the Contracting Officer all installed equipment operation and maintenance documentation, certificates concerning installed systems as required by host country laws, test reports, results, and as built drawings where required by host nation laws.

2.i The Contractor shall perform no digging until receipt of a completely coordinated AF form 103 from the Contracting Officer.

2.l Before works start, contractor will submit a detail works schedule to C.O. for coordination and approval.

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WORK DESCRIPTION:

Each item of the schedule is inclusive of furnishing and installation of materials and equipment, scaffolding, transportation to dump, and storage of demolished and/or removed materials, in accordance with contracting officer’s instructions and all finishing work required to make each item complete in a workmanlike manner.

All the quantities that are indicated or successively added are estimates. Therefore the government shall not be held responsible for the accuracy of the estimated quantities.

The contract requires a completed project on a lump sum basis. It is therefore the responsibility of the contractor to calculate, foresee and perform all quantities and work necessary even if it not mentioned in the specifications but included in the drawings or manifestly necessary to deliver a complete project based on its overall scope.

3. Removals.

3.1 Complete removal of all existing HVAC system including :

• 2ea chiller units.

• 4ea AHU (bldg. 308, 309) and associated parts.

• All the pipeline above ground, valves, pumps, storage tanks.

• All electrical feeding lines, associated breakers, conduits, metal channels.

• All the pipeline underground, including temporary removal of concrete plates above channel. Save existing pipe supports.

• Complete removal of the old and abandoned Air Handler Units on mechanical room bldg. 308 including all air ducts, dampers, electric controls and associated valves, pumps, pipelines. General cleaning of the room.

• Contractor shall transport off base at authorized dump according to category of debris/refuse in strict observance of all host country laws, decrees and local regulations in force.

LS

4. New HVAC System.

Note: the attached HVAC scheme is intended as a operating principle; Contractor shall develop and submit for approval a detailed scheme.

4.1 New chiller units (2ea), Cooling only, designed to operate also in winter at -5 deg., design to operate in marine ambient (tropicalized), Eurovent certified, complete of Hydronic system:

• Cooling capacity 134 KW.

• Type Carrier Aquasnap 30RBS 140C or equivalent approved.

• Power supply 3PH 400V +N.

• Nominal power consumption 49 KW.

• 4ea steps (4ea compressors).

• Complete of Hydronic Module with 2 pumps.

• Water frost protection

• Each chiller must have an electronic control board to work in alternate with the other one (automatic switch after a time period).

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• Anti-corrosion treatment for marine ambient.

• Protection grids.

• Provide a continuous rubber stripes to support chillers basement;

• Test and First starting made by an authorized local technician.

EA 2.

4.2 New Air Treatment Units (4ea), cabinet type, 2ea in bldg. 308 and 2ea in bldg. 309.

Note: power supply available 3PH 220V+N.

Minimum technical characteristics as existing.

• Cooling capacity 25 KW.

• Pre-painted galvanized frame and panels.

• Air flow capacity 6000 Cu.Mt./hr.

• Ventilating Air pressure calculated for the existing air ducts.

• Water flow capacity 5 Cu.Mt./hr.

• Variable fan speed following the cooling demand.

• Enthalpy Free cooling.

• 2ea intercepting ball valve each cabinet.

• Flow direction labeling on surface of pipelines.

• Including connection of drainage to existing pipe.

• Test and First starting made by an authorized local technician.

EA 4.

4.3 Chilled water storage tank:

• Capacity 1000 Lt.

• All Stainless steel material (No galvanization).

• Primary circuit flanged connections (Chillers side), same diameters of chillers outlets;

two flanges on bottom side (2 chillers supply) and two flanges on upper side (2 chiller returns).

• Secondary circuit flanged connections (Pumps side), one flange on bottom side (Pumps supply) and one flange on upper side (Return).

• Stainless steel thermometer.

• Drain valve on the bottom.

• Air bleeder on top.

• Insulation material 10 cm thick.

• Aluminum cover 6/10 mm all around (no plastic); water-proof sealed.

L.S

4.4 New circulating pumps (2ea), tropicalized (for marine ambient):

• Contractor shall calculate adequate Head and Capacity to supply simultaneously all new 4ea AHU in bldgs. 308 and 309. Take in consideration the load loss of pipelines and associated valves.

• 3ph, 400V.

• Complete of inverters, digital pressure/capacity sensors and display with menu.

• Electrical control panel, stainless steel, blank door with handle in the vicinity of the pumps (see detail on paragraph 5 “electrical works”).

• Stainless steel roof above pumps and elect. panel.

• Work includes any accessory works to have a job performed in work man like manner.

EA 2.

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4.5 Supply and installation of above ground stainless steel pipeline:

• AISI 304.

• Thickness 3 mm.

• Minimum internal diameter as per chiller outlets or as indicated.

• Flanged connections to valves, filters, water storage tank, etc.

• All the curves must have a bend radius at least 2 ext. diameter.

• All metal pipe supports and anchoring systems must be stainless steel.

• New stainless steel pipeline for domestic water as existing with intercepting valve and faucet with hose connection.

• Relocate existing diesel fuel pipeline as per attached drawing, work includes pressure test.

• The attached scheme is intended as operating principle. Contractor shall submit for approval a detailed drawing.

L.S.

4.6 Valves, filters, pressure & temperature gauges and associated parts:

• AISI 304.

• Flanged butterfly valves.

• Flanged “Y” filters.

• Threaded ball valve for “water make-up”.

• Balancing valves.

• Water make-up with pressure regulator and by-pass.

LS

4.7 Thermal insulation of above ground stainless steel pipeline:

• Elastomeric black foam, closed cells, 50 mm thick.

• Aluminum cover 6/10 mm; water-proof sealed; The aluminum cover must be removable around filters, valves handler, pumps, etc, using not corroding steel hinged latch as existing for easy removal and maintenance.

• All pipeline supports made of stainless steel.

• Flow direction labeling on surface of pipelines.

• Work includes any accessory works to have a job performed in work man like manner.

LS

4.8 Supply and installation of new underground secondary pipeline from stainless steel pipes up to bldgs. 308 & 309:

• Pre-insulated pipeline, type “Aquatecnic Iso Fiber-Cond” or equivalent approved.

• Internal diameter as per attached scheme, 90 and 61 mm.

• Insulation in PUR, thickness 40 and 30 mm.

• External covering in PE-HD, total external diameters 200 and 140 mm.

• Complete of all accessories, welded type, as curves, Tee, joints.

• 120 minutes pressure test according to UNI EN 806-4 and test report.

• Work includes any Masonry assistance to remove and re-install concrete slabs above existing concrete channel, masonry assistance to install pipe supports, to create the passages through the concrete walls and to have a job performed in work man like manner.

(See detail on It. 6 “Civil works”).

• Contractor shall submit with the offer, documentation of similar work performed in the past 5 year

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5. Electrical works.

Note: - power supply available for chillers and pumps 3PH 400V+N.

- Power supply available for AHU’s in bldgs. 308 & 309, 3PH 220V+N.

5.1 Outdoor conduits, boxes, accessories and metal channels Designed for marine ambient, protected against corrosion.

5.2 New Electrical feeding cables 4x 16Sq.mm from each chiller to existing Main Distr. Panel

(MDP). Work includes new thermal-magnetic breaker for each chiller and stainless steel channel or conduit.

LS

5.3 Supply and installation of new secondary panel 3PH+N 400V 50Hz for the 2ea new pumps, stainless steel, blank door with handle located in the vicinity of the pumps:

• Lights indicating presence of voltage.

• Main thermal magnetic breaker.

• Commutator “pump 1 / 0 / 2.

• 2ea new Secondary breaker sized as per manufacture pump electrical data.

• Day timer with auto/manual commutator.

• Work includes any electrical accessory works to have a job performed in work man like manner.

5.4 New Electrical feeding cables 4x 4 Sq.mm from new second. Panel to existing Main Distr.

Panel (MDP). Work includes new thermal-magnetic breaker and stainless steel channel or conduit.

LS

5.5 Bldg 308.

Note: Power available 3Ph 220V+N New Electrical feeding lines 4x10 Sq.mm from ea new AHU to existing Main Distr. Panel (MDP). Work includes new thermal-magnetic breaker sized as per Manufacture recommendation.

LS

5.6 Bldg 309.

Note: Power available 3Ph 220V+N New Electrical feeding lines 4x10 Sq.mm from ea new AHU to existing Main Distr. Panel (MDP). Work includes new thermal-magnetic breaker sized as per Manufacture recommendation.

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6. Domestic Water filters and softener in bldg. 30801.

6.1 Remove:

• Electric water filter and 6ea flanged gate valves outside of bldg. 30801.

• “Deferrizzatore and associated valves and controls.

6.2 Install 6ea new flanged ball valves, diameter as existing, work includes modification of existing pipeline as necessary.

6.3 Replacement of existing water softener:

• Primary Manufacture, type “Chillichemie, Nalco, Raema, Linsday Orobica.

• capacity 1 Cu.Mt./h.

• Work includes modification of existing pipeline and new intercepting valves and by-pass.

• Contractor must follow the installation instruction of the manufacture.

• First starting made by authorized Manufacture technician.

6.4 New manual water filter, self-cleaning, brass material, 90 Micron, capacity min 2.3 Mcu/h, to be installed outdoor, inside a stainless steel box.

7. Civil works.

7.1 Masonry assistance for:

• Remove and save all concrete plates above existing channel.

• Cleaning of channel bottom and the old waterproofing sealant.

• Clean/sand all metal brackets supporting pipelines, two coats of anti-rust enamel.

• Where necessary, install concrete blocks to support new plastic pipeline.

• Re-positioning of concrete plates with new sealant compound.

• Assist Mechanical Contractor to perform demolitions, drill holes, general concrete restoration, to have a job performed in work man like manner.

8. GENERAL NOTES:

1. Works in the project must fully comply with the following:

- Italian Ministerial Decree No 37/08 dated 22 January 2008;

- Other applicable Italian national and regional laws.

1. Once issued NTP, Contractor is required to contact CEAOR (0434-305691) and schedule a meeting to fill Form DD1354 with appropriate project data for real property capitalization (blank DD1354 and category codes list CATCODE_LIST_2010 are available at 31CES/CENM office during duty hours). Contractor is required to provide final Form DD1354 for 31CES/CD signature before contract close out;

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2. Before contract closes the contractor must provide manuals and training on all mechanical, electrical and other equipment about use and maintenance, training must be filmed for future reference;

3. For warranty call purpose, Contractor will be required to provide 2 copies of letter identifying project number, item, company address, phone number, point of contact, item warranty expiration date, etc. One copy of the letter will be installed next the item for immediate consultation;

4. Before contract close out, Contractor will be responsible to provide 2 set of AS BUILT drawings signed and stamped by qualified engineer and cd with autocad and pdf electronic version of same drawings (AUTOCAD Release 2007 for drawings. Drawings shall be geospatially referenced using real world coordinates WGS-1984 UTM 33N. 31CEP/CEPT section (0434-305488) will provide an AutoCAD drawing that is geospatially referenced for the contractor to use as a background);

5. Before contract close out, Contractor will be required to provide 2 copies of certificate of conformity for systems installed in accordance with DM 37/08, signed and stamped by a certified engineer and cd with pdf electronic version of same documentation;

9. ATTACHMENTS

#1 - UUUY 18-1073 Design binder .pdf