Amendment SPMYM122R00020002.pdf

N4215812744920

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

I. The purpose of this amendment is to revise the SOW, provide the draw ing for this solicitation, and to extend the solicitation.

II. All other contract terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 25

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 28-Apr-2022

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X SPMYM122R0002

X 9B. DATED (SEE ITEM 11)

09-Feb-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

28-Apr-2022

CODE

DLA MARITIME NORFOLK

SHAWNTA WELLS

CODE NMAB.P6

(757) 278-5075/FAX 396-8119

PORTSMOUTH VA 23709

SPMYM1 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SPMYM122R0002

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION A - SOLICITATION/CONTRACT FORM

The required response date/time has changed from 11-Mar-2022 12:00 PM to 16-May-2022 12:00 PM.

SECTION B - SUPPLIES OR SERVICES AND PRICES

SUBCLIN 000101

The CLIN extended description has changed from:

TWO (2) VENTILATION HATCH HOUSES TO BE DELIVERED BY 15 JUNE 2022

To:

TWO (2) VENTILATION HATCH HOUSES TO BE DELIVERED BY (Offeror to indicated best delivery date

SUBCLIN 000102

ONE (1) VENTILATION HATCH HOUSE TO BE DELIVERED BY 29 AUGUST 2022

ONE (1) VENTILATION HATCH HOUSE TO BE DELIVERED BY (Offeror to indicated best delivery date

SUBCLIN 000103

THREE (3) VENTILATION HATCH HOUSES TO BE DELIVERED BY 01 OCTOBER 2022

THREE (3) VENTILATION HATCH HOUSES TO BE DELIVERED BY (Offeror to indicated best delivery date

SECTION C - DESCRIPTIONS AND SPECIFICATIONS

The following have been added by full text:

ATTACHMENT I

PS-29076 REV B Drawing

The following have been modified:

SPECIFICATIONS OF WORK

A OVERVIEW: Temporary SUBMARINE HATCH VENTILATION ENCLOSURE (TSHVE) SYSTEM

1. PURPOSE: This (i) "Technical Specification" titled: TEMPORARY SUBMARINE HATCH VENTILATION ENCLOSURE (TSHVE) SYSTEM; in conjuction with (ii) the "Contract Drawing" (PS–29076 Revision B) titled: SUBMARINE HATCH VENTILATION ENCLOSURE, LARGE (SHVE–L[96"]); provides all the detailed technical requirements for a stand-alone Submarine Hatch Ventilation Enclosure (SHVE) commonly referred to as a large full-size Hatch House (SHVE–L[96"]). The full-size Hatch House shall provide, via the submarine's hatch or plug, personnel and utility access to the submarine's interior while simultaneously supplying either fresh outside air or exhausting stale, but relatively clean, inside air.

2. CONCEPT: The Temporary Submarine Hatch Ventilation Enclosure (TSHVE) phrase refers to an entire system. The TSHVE system consists of: (i) a ship's set of two each (2 ea) large capacity and full-size Submarine Hatch Ventilation Enclosures (SHVE–L[96"] × 2 ea) a.k.a. large full-size Hatch Houses.

3. DISCREPANCIES: Where there is a difference between the Technical Specification and either the Contract Drawing, this Technical Specification shall take precedence. However, the Contractor shall endeavor to clarify all inconsistencies with the cognizant Contracting Officer or the designate Contract Specialist.

4. ABBREVIATIONS: The slightly shorter expression Submarine Hatch Ventilation Enclosure (SHVE) includes all components that make-up a singular structure regardless of size (Small / Medium / Large) or scale (full-size or scale-model). For component identification and to differentiate from other sizes of Shipyard owned hatch houses (e.g. small –S & medium –M), the identifier shall be further shortened to Hatch Ventilation Enclosure (HVE) followed by the abbreviation for the particular component. For example, the Upper (Nesting) Roof can be identified as HVE–L[96"]–UPR-RF for the upper roof on a large full-size Hatch House. Military Standard 12D (MIL-STD-12D, dtd 15 June 1968 or later) titled: ABBREVIATIONS FOR USE ON DRAWINGS, AND IN SPECIFICATIONS, STANDARDS AND TECHNICAL DOCUMENTS can be used as a guide for determining a standard abbreviated identifier besides those previously determined in this specification.

5. PRICING: A proposal shall be proposed to the requesting contracting office based on a single order for the construction and purchase of six (6) large Temporary Submarine Hatch Ventilation Enclosure (TSHVE) systems consisting solely of the large full-size Hatch Houses. A single large TSHVE ship's set is defined as a quantity of two each large full-size Submarine Hatch Ventilation Enclosures (SHVEs). The proposal shall include delivery to the Government's destination of Norfolk Naval Shipyard (NNSY) within 26 weeks of an issued contract.

6. TERMINOLOGY: This Technical Specification (TS) uses the term "Contractor" as the one single party ultimately responsible for complying with the Contract. The term "Original Equipment Manufacturer or OEM" refers to manufacturers other than the Contractor for various complex devices or sub-assemblies that are critical components of the machine and hence, may include a separate Warranty, but, are not necessarily or at least directly responsible for meeting the conditions as set forth by the Contract (e.g. OEM of a fan or electrical components). The term "Vendor" can refer to parties other than the Contractor for such matters as for example shipping or maybe repair in case those responsibilities have been delegated or sub-contracted to others. Nevertheless, the Contractor shall ultimately be responsible for compliance with all specification requirements.

7. IDENTIFIERS: The Identifiers below shall be prominently displayed on the machine (see Section H, paragraph 5).

a. NNSY Machine Identifier – For the large (L) full-size (96") Hatch Houses ............ e.g. SHVE–L[96"]#1 and #2

b. ABC Machine Identifier – As determined by the Contractor (e.g. ABC, Inc.) such that the type, size, and the particular machine in the fleet as well as the OEM, type, capacity, and other characteristics of the air-handler can readily be identified by the Contractor.

8. SITE-VISITS: The Contractor is to expect, coordinate, facilitate, and accompany NNSY Federal and/or Contractor employees on their site visitations to the Contractor's manufacturing plant and/or administrative facility. These visits may occur to determine whether or not the Contractor is qualified to perform the terms of the Contract prior to its award, to observe various phases of construction, and/or to witness machine testing.

B DESIGN (SYSTEM CAPABILITIES): Temporary SUBMARINE HATCH VENTILATION ENCLOSURE (TSHVE)

SYSTEM

1. ALL SUBMARINE CLASS: The TSHVE system is designed to accommodate both the current Los

Angeles Class submarine (USS LA Class or SSN 688 Class) overhauled at Norfolk Naval Shipyard (NNSY) and the upcoming Virginia Class submarine (USS VA Class or SSN 774 Class) that incorporate a logistic trunk or, for that matter, any class of fleet submarines currently in the Navy's inventory.

2. DRYDOCK / BERTH: The Hatch House can be deployed on top of a submarine either in drydock or at berth.

3. HATCH AREA & HATCH WORK: The interior space within the walled confines (a.k.a. Hatch Area) of this large size Hatch House is 7'-6" × 7'-6" (90 in² = 8,100 in²). The size of the Hatch Area (8,100 in² ÷ 3,136 in² = 2.58 times) will allow for work to be accomplished in-place on the top and bottom Hatches as well as on its mechanism and seating surfaces, thus, negating the extra labor necessary to remove, transport, and reinstall hatches. Besides the increase in the Hatch Area floor space, hatch work is also facilitated by a Rigging Beam & Trolley, a pneumatic tool manifold, multiple single phase electrical outlets, and bright industrial lighting. Past safety concerns has also been resolved from the increase in Hatch Area floor space by providing sufficient stand-off distances for ingress and egress.

4. LIFTING & HANDLING (L&H):

a. Internal – The Hatch House incorporates an Internal Hoist system consisting of a Rigging Beam with Trolley, side wall Beam Supports & Brackets, Pneumatic Manifold, and a Shipyard (NNSY) Government Furnished Equipment (GFE) pneumatic hoist. This internal L&H capability has a net capacity of two tons which is similar to the standard capacity for the Shipyard tool crib hoists.

The internal L&H capabilities of the Hatch House will greatly reduce the number of external crane lifts and external (submarine enclosure) hoist lifts.

b. External – The Hatch House accommodates external crane lifts and external (submarine enclosure) hoist lifts via its External Hoist system consisting of slideable nesting Roofs, a removable Front Wall, a sliding Front Wall Door capable of being latched to the OPEN position, and a removable Door Header.

5. LOW PROFILE: The mechanical and ventilation equipment is placed in back vice on top of the Hatch House. The resulting low profile allows for the Hatch House to be deployed within the confines of a whole ship's enclosure system (SHT / RSC) even if placed on top of a Logistics Trunk Platform (for USS Virginia Class sub). Operation and maintenance is also greatly facilitated from the low placement of the mechanical and ventilation equipment.

6. PROPORTIONAL EFFECTIVENESS: Although the full efficacy of the TSHVE system as designed is for three Hatch Houses to complete a ship's set in which two are in Supply Mode and one is in Exhaust Mode, its effectiveness is proportional should circumstance dictate that the quantity of Hatch Houses available is less than a full ship's set.

7. USS VIRGINIA CLASS MULTIPLE DEPLOYED CONFIGURATIONS: For the USS Virginia Class submarine, the Hatch House can be deployed either directly ON–HULL on top of a hatch with a logistics type trunk in-place or slightly elevated OFF–HULL just above a hatch on a platform in any relative position with a logistics type trunk removed.

8. UTILITY ACCESS: Utilities can penetrate to the submarine's interior through various Side Wall Access Openings while the Hatch Area maintains a precisely determined static pressure and rate of airflow.

9. VENTILATION: Each Hatch House can either supply clean (a.k.a. fresh or outside) air (ambient from the internal air-handler or tempered from an external source) or exhaust stale, but relatively clean, inside air (from its internal air-handler or an external source) while simultaneously allowing for either personnel access to the submarine's interior or maintenance access for repair on a hatch or trunk.

The air-handler's Variable Frequency Drive (VFD) manual control in combination with the monitoring of pressure sensors allows the Hatch Area to act as a pressure chamber for holding a precisely set static pressure which translates to an airflow for supplying air or exhausting air, thus, enabling the ship's temporary Ventilation system to establish a rate for exchanging fresh air.

10. WEATHER PROTECTION: The Hatch House offers weather protection to the hatch mechanism and trunk as well as to the sub's internals when the ship is either at berth or uncovered in drydock.

B DESIGN (COMPONENT FEATURES): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

1. ROOF SYSTEM: The roof system shall consis of two panels which slide rearward to expose the hatch area in order to support production work and rigging evolutions. The front Upper Roof and the back Lower Roof slide and nest one on top of the other via a Roof Mechanism. The Roofs, when nested in the COVERED position, provide weather protection to the Hatch Area. The Roofs can nest and then slide on top of the Machinery Area to the EXPOSED position so as to gain access to the Hatch Area by an external crane or external (submarine enclosure) hoist. Roof Clamps along the sides of the front Upper Roof (qty = 4: UPR RS Front / UPR RS Back / UPR LS Front / UPR LS Back) and along the rear of the back Lower Roof (qty = 2: LWR RS & LWR LS) are important components for sealing the pressure within the Hatch Area by locking the Roofs in place so that the Hatch Area can be pressurized (positive pressure for supplying air or negative pressure for exhausting air). Roof system shall be able to be operated via a hand cranked chain and sprocket system, with the roof panels moving on roller bearings.

2. RIGGING BEAM & TROLLEY: The Hatch House incorporates a removable Rigging Beam with Trolley designed for a two ton net load. The design net load is greater than the combined weight of the external and internal hatches, thus, allowing for simultaneous repair of both hatches while being supported by a single Rigging Beam. The Rigging Beam is upheld and slides fore and aft on 2"×4" tube steel Beam Supports & Brackets fastened to the top of the Left and Right Side Walls and, in-turn, the Trolley is suspended and slides left to right on the Rigging Beam, thus allowing the point of lift to be centered over the hatch, irrespective of the Hatch House position relative to the hatch. A second Rigging Beam with Trolley (borrowed from some other Hatch House or from spare units) can also be placed on top of the Beam Supports to accommodate two loads with different centers. A Government furnished (Shipyard) two ton pneumatic hoist will be attached to the trolley in the field and obtain its power from the Contractor furnished Pneumatic Manifold.

3. FRONT WALL SYSTEM: To accommodate Virginia Class submarine overhauls with its sixty inch diameter (60"Ø) removable logistics trunk, the Front Wall (system) (HVE–L[96"]–FR-WALL) has both bolt fasteners along the sides and sleeve tubes in its top corners for the insertion of shackle pins so that the entire wall can be removed by crane for unencumbered access to the Hatch Area by an external (submarine enclosure) hoist. To assist Los Angeles Class submarine overhauls with its thirty inch diameter (30"Ø) hatch, the Front Wall (system) has a removable Door Header and a sliding Door that can be latched to the OPEN (Right) position for a three foot wide access to the Hatch Area by an external (submarine enclosure) hoist. Since the access door must be easily opened manually as well as self-closing in spite of enormous pressures (either positive for Supply Air or negative for Exhaust Air), the Front Wall (system) has been designed with a sliding Door vice a swinging door. The sliding Door has the added benefit of unrestricted orientation for the Hatch House since little space is required fronting it.

4. PRESSURE SEALING SYSTEM SURFACES: The Pressure Sealing System surfaces allow utilities to penetrate to the submarine's interior through various Side Wall Access Openings while the Hatch Area maintains a precisely determined static pressure (air flowrate). The Pressure Sealing System surfaces are as follows: (i) two same Side Plates (for Left Side & Right Side); (ii) two same Side Seals (for Left Side & Right Side); (iii) four End Seals (two same Flat for Front & Back plus two same Curve for Front & Back); and (iv) six Access Panels plus six Access Boots (two same Upper for Left Side & Right Side plus two same Lower Front for Left Side & Right Side plus two same Lower Back for Left Side & Right Side). The Side Plates are raised or lowered along the Right Side and Left Side of the Hatch House until the Side Seals seat on its bottom surface (ship's hull or hatch platform). The Side Seals have a dual surface: ANGLED & FLAT. The ANGLED surface is for seating against a ship's hull and, in reverse, the FLAT surface is for seating against a hatch platform. The End Seals are raised or lowered along the Front and Back of the Hatch House until they seat on its bottom surface.

The End Seals have two versions: CURVE & FLAT. The CURVE version is for seating against a ship's hull and the FLAT version is for seating against a hatch platform. Access Panels shall seal when Access Openings are UNUSED (not penetrated by any utility line). Access Boots and/or Access Panels shall seal they are USED (penetrated by utility lines).

5. ELECTRICAL STATIONS: Four electrical stations provide ample lighting and single phase electrical power.

6. PNEUMATIC MANIFOLD: The Low Pressure Air (LPA) Pneumatic Manifold with its five each (or more) pneumatic tool female connectors accommodates the connection of a Government furnished

(Shipyard) two ton pneumatic hoist and facilitates powering pneumatic tools for use anywhere in the vicinity of the Hatch House.

7. SWIVELING LANDING PADS W/ TELESCOPING BACK LEGS: There shall be ten each (10 ea) swiveling type Landing Pads distributed five on each side of the Hatch House at the bottom of every vertical Support Beam/Leg (i.e. Leg). The swiveling feature of all Landing Pads allows the Hatch House to rest securely on either: (i) a flat surface such as the ground when stored or on a platform OFF–HULL when deployed on a Virginia Class submarine or (ii) a curve surface such as on the submarine's hull when deployed ON–HULL directly over a hatch. The two Back Legs shall have swiveling type Landing Pads that also telescope and rotate ninety degrees. The telescoping and rotating feature of the Back Leg Landing Pads allows the Machinery Area of the Hatch House to overhang the platform on a Virginia Class submarine in any orientation (such as overhanging starboard or port and forward or aft) or to any configuration (such as off-centered to any amount).

C AIR–HANDLER (GENERAL PURPOSE PACKAGED FAN): LARGE FULL-SIZE HATCH HOUSE (SHVE–

L[96"])

1. GENERAL: The air-handler shall be a centrifugal type General Purpose Packaged Fan (GPPF) utilizing a Backward Curved (BC) type wheel. The fan shall be single-width & single-inlet in Arrangement 10, capable of operating over the entire Class II range as defined in AMCA Standard 99-20408/N: "Operating Limits for Centrifugal Fans". The air-handler shall be as designed and manufactured by The New York Blower Company® in accordance with the equipment schedule described and depicted in its Bulletin 051 (dtd June 2006 or later) titled: GPA/GENERAL PURPOSE

PACKAGED FANS or a prior approved equivalent. Fan wheels shall utilize non-overloading backward curved blades. Flat (PLR single thickness) blades are not acceptable because of the wheel's limited operating range on the back side (low volume) of the peak efficiency curve. Airfoil (AcoustaFoil double thickness hollow) blades are not acceptable because of the fan's operation within a marine industrial setting in which material build-up on the wheel would be expected. The fan shall be in compliance with the layouts shown on the drawing. Fan size, rotation, and orientation of the discharge shall be as follows:

Twenty-two inch (22") nominal size, counterclockwise (CCW) rotation, and the fan's discharge rotated twenty-two and a half degrees (22½º) midway between Up Blast (UB) and Top Angular Up (TAU) (Part number is GPPF: Size 22"–BC–15HP–CCW–UB-TAU or equat).

2. PERFORMANCE: Fan ratings shall be based on tests made in accordance with ANSI/AMCA Standard 210: "Laboratory Methods Of Testing Fans for Aerodynamic Performance Rating" in an accredited AMCA laboratory. Fans shall have a sharply rising pressure characteristic extending throughout the operating range to assure quiet and stable operation from wide open to closed off. Fan brake horsepower shall be equal to or less than 15 brake horsepower (BHP) at five (5.0) inches static pressure and 10,000 CFM at 0.075 lb / cu ft air density (at sea level).

3. SOUND: Fan manufacturers shall provide sound power level ratings for fans tested and rated in accordance with ANSI/AMCA Standard 301/N: "Methods for Calculating Fan Sound Ratings from Laboratory Test Data". Tests shall be performed in an accredited AMCA laboratory. Sound power ratings shall be in decibels (reference 10-12 watts) in eight octave bands. Sound power levels will be corrected for installation by the Contractor.

4. CONSTRUCTION: The fan housing shall be constructed of heavy-gauge rolled steel with continuously welded air-tight seams and flanged or rolled edges for rigidity. Lock seams or partially welded construction are not acceptable. Housing shall be reinforced with rigid bracing to increase structural integrity and prevent vibration. Housing shall include lifting eyes. The inlet cone shall be aerodynamically designed and spun providing minimum separation of air flow. Wheel diameters and outlet areas shall be in accordance with the dimensions adopted by ANSI/AMCA Standard 99- 2413/N: "Impeller Diameters & Outlet Areas for Industrial Centrifugal Fans".

5. BEARINGS Bearings shall be grease lubricated, precision anti-friction ball self-aligning, pillow block design. Bearings shall be designed for a long-life when rated at the fan's maximum cataloged operating speed.

6. SHAFT: All shafts (wheel & motor) are to be ASTM A-108 steel, grade 1040/1045, precision turned, ground, and polished. Grade 1018 steel is not acceptable. The shaft's first critical speed shall be at least 120% of the fan's maximum operating speed. The drive end of the fan shaft shall be counter-sunk for tachometer readings. Shafting shall be straightened to tight tolerances to minimize "run out" and ensure smooth operation.

7. FINISH: All fan surfaces to include accessories are to be thoroughly prepared prior to painting via a combination of washing and hand / power tool cleaning as deemed necessary. After cleaning, all surfaces are to be coated with an industrial grade coating. Surfaces of bolted components not accessible after assembly shall be coated and allowed to dry prior to final assembly. Primer only is not acceptable. Final color is MEDIUM GRAY.

8. BALANCE & TEST: The fan assembly shall be statically and dynamically balanced on precision balancers in accordance with ANSI/AMCA Standard 204/N: "Balance Quality and Vibration Levels For Fans". Wheel balancing shall be performed prior to assembling the fan (shaft, wheel, & housing).

Completed fans shall also be given a final balance check in the manufacturing facility for the specified range of running speeds in which the fan's vibration is demonstrated to be within allowable tolerances. The Original Equipment Manufacturer (OEM) shall issue a Balance & Test Report which, in turn, shall be provided to the Government via the Contractor.

9. INSPECTION: All fans shall receive a final inspection by a qualified inspector from the Original Equipment Manufacturer (OEM) of the fan prior to shipment. Inspection is to include: fan description and accessories, balance, welding, dimensions, bearings, duct and base connection points, paint finish, and overall workmanship.

10. FAN CURVE: The Original Equipment Manufacturer (OEM) shall issue a Fan Curve based on the size of the fan and power of the motor that clearly depicts both the Fan Static Pressure (Y-axis) in inches of water gauge (in wg) as well as the Fan Input Power (Y-axis) in brake horsepower (bhp) as a function of the Volume Flow Rate (X-axis) in cubic feet per minute (cfm). The Fan Curve shall be provided to the Government via the Contractor.

C AIR–HANDLER (GPPF ACCESSORIES): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

Specifically designed by the Original Equipment Manufacturer (OEM) of the fan (e.g. The New York Blower Company®) in which the final interior and exterior surface of each accessory shall either be a high performance air dry epoxy paint or powder coat finish in a MEDIUM GRAY color, each air-handler (a.k.a.

fan) shall be furnished complete with the following acessories (General Purpose Packaged Fan: Size

22"–BC–15HP–CCW–UB-TAU):

NOTE: The sequential order and terminology used for the accessories listed below is similar to that provided by The New York Blower Company® in their Engineering Supplement (ES-053) order form dated June 2007 an example of which has been pre-filled and incorporated as the last sheet of this specification. Descriptions were developed from Bulletin 051 (dtd June 2006 or later) titled: GPA/GENERAL PURPOSE PACKAGED FANS.

1. CLEANOUT DOOR – QUICK OPENING (3 O'CLOCK): To facilitate inspection, cleaning, maintenance, or repair of the fan's centrifugal wheel assembly, the scroll housing for the centrifugal wheel shall be equipped with a quick-opening latch type cleanout door. The cleanout door shall swing open on hinges after turning two or more cam levers and shall be gasketed for a secure seal and to curtail vibration when closed. Position the cleanout door with the hinge at a lower elevation than the cam levers so that the door swings down when opened. Because the air-handler will be placed against the back wall of the hatch house, position the cleanout door on the housing scroll on the same side as the discharge so that the hinge is at the same elevation as the wheel's shaft when the fan's discharge is set midway between Up Blast (UB) and Top Angular Up (TAU) (CCW UB-TAU). This might be interpreted as roughly the 3 o'clock position when the air-handler is viewed from the same side as the drive shaft & motor.

2. DRAIN: To drain any residual moisture from the air-handler, a one and a half inch diameter (1½"Ø) welded tank flange type drain shall be located at the lowest elevation in the housing scroll with the fan's discharge defined as counterclockwise rotatable midway between Up Blast and Top Angular Up

(CCW UB–TAU).

3. DRAIN PLUG: A drain plug shall be provided with hose type straight threads matching the thread pattern (diameter & pitch) as the drain. The drain plug shall come with an appropriately sized gasket or O-ring.

4. FLANGED OUTLET: Angled rectangular flange shall be welded flush to the fan's (discharge) outlet and shall be provided with a defined hole pattern to match an available rectangular Outlet Companion Flange.

5. OUTLET COMPANION FLANGES (7 EA): Rectangular flange with a defined hole pattern shall match the Flanged Outlet for manufacturing the Durolon® rubberized-fiberglass removable Discharge Coupling between the Discharge Plenum Duct and Discharge Plenum Damper (4 ea), the inlet and a wye outlet (to attach the coupling) for the Disharge Plenum Duct (2 ea), and for a Discharge Plenum Damper Flange to attach the coupling (1 ea).

6. SHAFT SEAL – CERAMIC-FELT: Multiple ceramic-felt seal elements compressed between a metal backing plate and a retaining disc shall be provided. The elements can be split for field maintenance.

7. FLANGED INLET: Angled ring or circular flange welded flush to the fan's (suction) inlet collar shall be provided with a defined hole pattern to match an available circular Inlet Companion Flange.

8. INLET COMPANION FLANGES (5 EA): Circular ring or flange with a defined hole pattern shall match the Flanged Inlet for manufacturing the Durolon® rubberized-fiberglass removable Suction Coupling between the fan's scroll housing and Suction Plenum Duct (4 ea) and for a Suction Plenum Duct Flange to attach the coupling (1 ea).

9. POSITIVE SCREW ADJUSTMENT: Two threaded rods shall provide elevation adjustment of the motor platform for controlling the tension between the motor shaft's V-belt pulleys and the wheel shaft's V-belt pulleys.

10. WEATHER COVER / BELT GUARD: To completely enclose the motor and drive assembly for protection from the elements and for safety purposes, the Weather Cover / Belt Guard shall be an all steel assembly in several pieces for ease in removal for inspection or maintenance. Panels shall be louvered to allow for motor ventilation.

11. VIBRATION ISOLATION RAILS – SPRING: To minimize the transmission of vibration to its mounting structure, spring-type isolation rails shall be attached along the entire perimeter (full length × full width) of the flanged base.

12. V-BELT DRIVE – CONSTANT SPEED: The wheel's rotation via the V-belt drive shall be established for a constant maximum speed as dictated by the motor's maximum RPM at a frequency input of 60 hertz.

The Variable Frequency Motor Speed Control will determine the motor's & wheel's final rotation speed via a frequency change.

13. MOTOR REQUIREMENTS @ 15 HP: The fan motor shall be foot-mounted, NEMA Design B, TEFC premium duty industrial, continuous duty, ball bearing, direct-drive, variable torque type suitable for operation on 460 volt / 3 phase / 60 hertz power. Motor bearings shall have a minimum Class II life, as defined by AFBMA, of at least 750,000 hours. The motor is external to the scroll housing in which the base shall be made of heavy gauge steel supported by gussets that extend to the foundation flange so as to assure structural stability.

D VENTILATION (SUCTION PLENUM): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

As depicted in the Contract Drawing (PS–29076 Rev B) , the Suction Plenum Duct (HVE–L[96"]–SP-DUCT) has a nominal two foot width, this duct width was developed from a former narrower hatch house design (86" W). The current hatch house design is ten inches wider (96" W). The Suction Plenum can either be widened or shifted to the Left side of the Hatch House or the door hinged on a flange (as shown) or a combination thereof so that the Suction Plenum Door can be latched flat against the Left inside wall when opened to maximize the interior space within the Hatch Area. Maximum interior space is most critical for when the hatch house is deployed on top of a Virginia Class submarine with a hatch platform substituted for its hatch plug. The Suction Plenum acts as a bi-directional duct bypassing the built-in fan's intake when connected to an external air-handler (supply or exhaust).

1. SUCTION PLENUM DOOR & SCREEN: The purpose of the Suction Plenum Door (HVE–L[96"]–SP-DR) is three-fold: (i) Exhaust Mode – internal or external, to provide a path for the airstream to exit the Hatch Area to a fan's suction inlet; (ii) Supply Mode – external, to provide a path for an external (tempered) airstream to enter the Hatch Area bypassing the fan's suction inlet; and (iii) to provide access for maintenance purposes. The Suction Plenum Door shall be braced for rigidity; have a continuous hinge along its side; include a latching mechanism & design to lock with no vibration in the OPEN postion while abutting flat against the Left interior wall; and for Supply Mode – internal, include a latching mechanism to lock the door in the CLOSED position. The Suction Plenum Screen (HVE– L[96"]–SP-SCRN) shall either be hinged (preferred) or removable so as to provide access for maintenance purposes. The Suction Plenum Screen shall be manufactured from quarter inch diameter (¼"Ø) alloy steel screen mesh material (PS–29076: PC-40) which has a grid pattern of one and a quarter inch square.

2. SUCTION PLENUM DAMPER & FILTER BANK: The purpose of the Suction Plenum Damper and Filter Bank is for operating the Hatch House in Supply Mode – internal, to provide a path for ambient (untreated) air to enter the Hatch Area via the fan's suction inlet. The nominal size of the Suction Plenum Damper (HVE–L[96"]–SP-DMPR) and the Suction Plenum Filter Bank (HVE–L[96"]–SP-FLTR) shall be approximately three feet wide by four feet tall (3'W×4'H). Requisite features for the control damper are as follows: (i) heavy-duty 12 gage construction for the frame; (ii) stainless steel material for the frame, blades, & axles; (iii) parallel blade (PB) action w/ airfoil shape louvers; (iv) ethylene-propylene (a.k.a. EPD, EPR, EP) seals for the blades; and (v) a manual actuator for the operator that can secure the louvers in a completely OPEN or SHUT position (e.g. a Hand Quadrant). The operator shall be internal to the Suction Plenum. The recommendation is a Ruskin® Model No. CD30AF2 HEAVY

DUTY AIRFOIL CONTROL DAMPER w/ eight 6" nominal blades. Requisite features for the filter bank (housing & filters) are as follows: (i) high efficiency (98%) moisture separator & low efficiency particulate filter; (ii) all stainless steel material for the frame & mesh screen; (iii) frame to have gaskets, mitered corners, drainage holes, & labeled to correctly position; and (iv) washable via a stream of warm water.

Suggested product is "W×2"D) stainless steel Moisture Separator / Demister (a.k.a. filters) from Air Filters, Inc. (www.AirFilterUSA.com; 713.896- ME12242 (24"H×128901). The filter bank shall be external to the damper to collect and drain the moisture away from the Suction Plenum.

3. SUCTION PLENUM COUPLING: The circular Suction Plenum Coupling (HVE–L[96"]–SP-CPLG) serves as one of three isolation points to prevent vibration from the Air-Handling Unit (AHU or motor-wheel fan assembly) from propagating to the rest of the structure. The Suction Plenum Coupling is located between the Suction Plenum Duct and the inlet to the fan assembly (HVE–L[96"]–AHU). The Suction Plenum Coupling shall be constructed and installed in such a matter as to allow for its removal for repair or replacement of the fabric. Manufacture the coupling by applying the appropriate adhesive and then the coupling's material between two (2) each Inlet Companion Flanges manufactured by the OEM of the fan on one end and the same on the opposite end. The companion flanges shall be riveted together in which the rivets shall be spaced between the pre-drilled mounting holes with the rivets flush on its exterior attachment sides (sides facing the Suction Plenum Duct and the AHU). The material for the Suction Plenum Coupling shall be Durolon® "DFDU" duct fabric which is a strong, woven fiberglass fabric coated on both sides with a DuPont Hypolon® synthetic white rubber as manufactured by Duro Dyne Canada, Inc. When mounted, the spacing between the pairs of Inlet Companion Flanges shall be between two to four inches with one to two inches of spare material for the circular coupling to have a ripple effect.

4. SUCTION PLENUM NIPPLES & CAPS: The two pairs (2 pr) of Suction Plenum Nipples & Caps (HVE– L[96"]–SP-NIP) & (HVE–L[96"]–SP-CAP) shall be manufactured from the same thickness material (steel:

⅛-inch plate or 11 gage sheet) or greater as the Suction Plenum. The Suction Plenum Nipples shall be a collar of nominally twenty inches in diameter by five to six inches in depth (19¾"⅛" OD × 5-6" D) with a quarter inch radius crimp collar (¼" deep × ½" wide) at the midpoint of its protrusion for the attachment of flexible ducting with multiple large hose clamps (very high positive static pressures when externally fed). The Suction Plenum Caps shall nominally be twenty inches in diameter (20"⅛"/0" ID) and have a handle. The Suction Plenum Nipples & Caps shall be made of sufficient tolerance such that the caps are interchangeable and do not rattle when installed or stowed.

5. SUCTION PLENUM CAP STOWAGE: A bracket shall be manufactured and installed so that one cap can be stacked on top of the other just above the Suction Plenum Nipples towards the rear of the Suction Plenum.

D VENTILATION (DISCHARGE PLENUM): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

As depicted in the Contract Drawing (PS–29076 Rev B), the Discharge Plenum Duct (HVE–L[96"]–DP- DUCT) shall have similar rectangular dimensions for its single inlet and dual wye outlets (exhaust to ambient & supply to Hatch Area) as the outlet on the fan's scroll housing. This is evidenced by the Size 22" optional Outlet Companion Flange (outer dimensions: 27⅞"×19⅞" & inner dimensions: 24⅞"×165/16") available from the OEM of the General Purpose Packaged Fan (reference GENERAL PURPOSE FAN

SPECIFICATIONS on page 10 of The New York Blower Company® Bulletin 051). Also, the rectangular cross-sectional inner dimensions (24⅞"×165/16") shall be maintained or similarly approximated for both the Discharge Plenum Coupling and the Discharge Plenum Damper.

1. DISCHARGE PLENUM COUPLING: The rectangular Discharge Plenum Coupling (HVE–L[96"]–DP-CPLG) serves as one of three isolation points to prevent vibration from the air-handling unit (AHU or motor-wheel fan assembly) from propagating to the rest of the structure. The Discharge Plenum Coupling is located between one of the wye outlets on the Discharge Plenum Duct and the Discharge Plenum Damper attached to the Back Wall of the Hatch House. The Discharge Plenum Coupling shall be constructed and installed in such a matter as to allow for its removal for repair or replacement of the fabric. Manufacture the coupling by applying the appropriate adhesive and then the coupling's material between two (2) each Outlet Companion Flanges manufactured by the OEM of the fan on one end and the same on the opposite end. The companion flanges shall be riveted together in which the rivets shall be spaced between the pre-drilled mounting holes with the rivets flush on its exterior attachment sides (sides facing the Discharge Plenum Duct and the Discharge Plenum Damper). The material for the Discharge Plenum Coupling shall be Durolon® "DFDU" duct fabric which is a strong, woven fiberglass fabric coated on both sides with a DuPont Hypolon® synthetic white rubber as manufactured by Duro Dyne Canada, Inc. When mounted, the spacing between the pairs of Outlet Companion Flanges shall be between two to four inches with one to two inches of spare material for the rectangular coupling to have a ripple effect.

2. DISCHARGE PLENUM DAMPER: The purpose of the Discharge Plenum Damper is for operating the Hatch House in Supply Mode – internal, to provide a path for ambient (untreated) air to enter the Hatch Area via the fan's discharge outlet. The nominal size of the Discharge Plenum Damper (HVE– L[96"]–DP-DMPR) shall be proximate to the inner dimensions for the optional Outlet Companion Flange (24⅞"×165/16") as previously described. Requisite features for the control damper are as follows: (i) heavy-duty 12 gage construction; (ii) stainless steel material for the frame, blades, & axles; (iii) parallel blade (PB) action w/ airfoil shape louvers; (iv) ethylene-propylene (a.k.a. EPD, EPR, EP) seals for the blades; and (v) a manual actuator for the operator that can secure the louvers in a completely OPEN or SHUT position (e.g. a Hand Quadrant). The operator shall be external to the Discharge Plenum for access from either the Machinery Area on the outside of the SHVE or the Hatch Area as best determined by the Contractor. The recommendation is a Ruskin® Model No.

CD30AF1 or CD30AF2 HEAVY DUTY AIRFOIL CONTROL DAMPER w/ five 5" nominal blades having a three inch wide U-channel frame so as to match the same gap from the 3"×3" (tube steel) beam supports vertically mounted on the Back Wall of the Hatch Area.

3. DISCHARGE PLENUM (SWING) GATE: The purpose of the Discharge Plenum (Swing) Gate (HVE– L[96"]–DP-GATE) is for directing the airflow from the internal air-handling unit to either Exhaust Mode – internal, discharge to the environment or Supply Mode – internal, discharge to the Hatch Area. The Discharge Plenum (Swing) Gate shall have a manual mechanism accessible by an average size individual standing on the Machinery Area platform to facilitate raising and lowering the gate to two distinct and secured positions as follows:

(i) a completely raised or UP position for Supply Mode – internal; and

(ii) a completely lowered or DOWN position for Exhaust Mode – internal.

4. DISCHARGE PLENUM (WEATHER) SHIELD: The purpose of the Discharge Plenum (Weather) Shield (HVE–L[96"]–DP-SHLD) is for protecting the fan's wheel from the elements when the Hatch House is operating in either the Supply Mode or in Exhaust Mode – internal and the built-in air-handler is in operation. A discharge safety mesh shall be installed at the exhaust discharge below the discharge plenum shield. The Discharge Plenum (Weather) Shield shall have a manual mechanism accessible by an average size individual standing on the Machinery Area platform to facilitate raising and lowering the shield to three distinct and secured elevations as follows:

(i) a CLOSED position (0º) for Supply Mode – external & internal and for Exhaust Mode – external;

(ii) a HALF–OPEN position (65º above CLOSED position) for a protected Exhaust Mode – internal, for when the Hatch House could be exposed to weather (e.g. a submarine at Berth or in Drydock with no submarine enclosure roof coverings); and

(iii) a FULL–OPEN position (130º above CLOSED position) for an unprotected Exhaust Mode – internal, for when the Hatch House is not exposed to weather (e.g. a submarine in Drydock protected by submarine enclosure roof coverings).

E CONSTRUCTION REQUIREMENTS (SPECIFIC): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

1. ELECTRICAL:

a. Electrical Stations – a total of four each (4 ea) shall be mounted to the interior (Hatch Area) on the Left & Right Side Walls as depicted on drawing PS–29076. Each Electrical Station shall include: (i) an incandescent light fixture rated for 200 watts with a ≤200w light bulb rated for ≥3,800 lumens; (ii) a switch for turning ON & OFF only that particular light fixture; and (iii) a 120 volt electrical outlet.

b. Pressure Sensors – Electronic static pressure sensors shall be installed both in the Suction Plenum Duct and in the Discharge Plenum Duct. The location of the digital readout shall be where it can be easily viewed inside the hatch area and be clearly labeled.

c. Variable Frequency Drive (VFD) - Air-handler Variable Frequency Drive (VFD) manual control unit shall be installed to the exterior (Hatch Area) in a conveniently accessible area. VFD shall meet NEMA 4X all stainless Steel type enclosure requirements. Interior (Hatch Area) VFD is not required.

2. FRONT WALL: The entire Front Wall system (HVE–L[96"]–FR-WALL) shall be removable via four bolted places on each side. The Front Wall shall be constructed with sleeves at the top corners so that shackle pins can be inserted for Lifting & Handling. As observed from outside looking to the front of the Hatch House, the Front Wall Door (HVE–L[96"]–FW-DOOR) shall slide left to the CLOSED position and slide right to the OPEN position. There shall be a heavy-duty latch that can hold the door in a full OPEN position. The Door Header (HVE–L[96"]–FW-HDR) shall be removable for load access via an external hoist. The sliding door shall have a wire-reinforced safety glass window. The door mechanism sheave or pulley must be stainless steel with shielded stainless steel ball bearings. The door shall firmly, yet steadily, self-close by gravitational pull via the ideal quantity of counter-weights. There shall be access to the counter-weight tube for the removal of weight(s) or the insertion of spare weight(s), thereby allowing for field adjustment of the door's friction versus gravity force upon its closing mechanism. For each Hatch House ordered, two spare counter-weights besides those already inserted into the door mechanism tube. The supplied spare counter weights shall be of the same quantity determined to be ideal on the associated SHVE.

3. MECHANICAL:

a. Variable Frequency Motor Speed Control or Variable Frequency Drive (VFD) – To vary the rotation speed (rpm) of the fan by directly controlling the frequency (hertz) of the power to the motor thus, efficiently reducing the air volume and also significantly reducing the power, the fan assembly shall be so equipped with such a control. From the fan laws, the volume flowrate is directly proportional to the fan speed and, correspondingly, power is proportional to the cube of the fan speed. For example, a twenty percent reduction in flow rate or fan speed translates to necessitating only half the usual power ([0.8]3 = 0.512). A reverse phase relay is not required nor desired for VFD motors, however, the VFD control shall have a jog button so as to verify correct rotation of the fan wheel. An arrow shall depict the proper fan rotation direction.

b. Pneumatic Manifold – A Low Pressure Air (LPA) Pneumatic Manifold (HVE–L[96"]–MANF) with five (or more) pneumatic tool (Part number: Parker BH4-60 or equivalent) female connectors will be mounted in the center of the interior (Hatch Area) Back Wall slightly below the Discharge Plenum Damper. The manifold working pressure shall be ≥150 psig.

4. PRESSURE SEALING SYSTEM: Manufacture the Pressure Sealing System surfaces as follows: (i) two same Side Plates (for Left Side & Right Side); (ii) two same Side Seals (for Left Side & Right Side); (iii) four End Seals (two same Flat for Front & Back plus two same Curve for Front & Back); and (iv) six Access Panels plus six Access Boots (two same Upper for Left Side & Right Side plus two same Lower Front for Left Side & Right Side plus two same Lower Back for Left Side & Right Side).

a. Access Boots – Manufacture access boots by applying appropriate adhesive and then the boot's material (PC–28) between two each (2 ea) flanges. The flanges shall be riveted together in which the rivets shall be spaced between pre-drilled or to be drilled mounting holes and the rivets shall be flush on the side facing the Hatch Area of the Hatch House. A cinch cord w/ heavy-duty metal cord lock shall be affixed to the boot's end.

b. Roofs – The Upper (front) Roof and the Lower (back) Roof are sealed over the Hatch Area in the COVERED position via four Upper (F&B / L&R) and two Lower (L&R) Roof Clamps. The Roofs shall be capable of nesting one on top of the other and then sliding onto the Machinery Area into the EXPOSED position for access to the Hatch Area by an external hoist or crane.

5. STOWAGE: Except for the Suction Plenum Caps, this drawing does not detail the methods, means, location, manner, nor hardware for stowing the various accessories that may not be in use and hence, not attached for a particular evolution. Accessories to have a defined stowage position on its Hatch House are as follows:

a. Seals – flexibility to stow a single pair (both Front & Back) of either the Flat End Seals or Curve End

Seals;

b. Access Panels & Boots – stowage for a complete set of all six Access Panels and all six Access Boots;

and

c. Electrical Cable – To facilitate stowage of the fifty feet (50') of 100 ampere rated (100 A), No. 2 All

Wire Gage (AWG), four jacketed flexible conductor (SOOW type), sheathed electrical cable (Duraline® Part No. M126002–002B–050–BLK or equal), the Machinery Area of the Hatch House shall have a rugged Cable Support HVE–L[96"]–ELEC-SPRT sized sufficiently to hold the complete length and type of cable so described.

E CONSTRUCTION REQUIREMENTS (GENERIC): LARGE FULL-SIZE HATCH HOUSE (SHVE–L[96"])

1. DURABILITY: The unit shall be a single integrated framed structure manufactured as a complete entity to include all devices, accessories, and fittings necessary to perform the function for which it was designed. Each machine shall be capable of continuous year-round unmanned operation while exposed from inclement to extremely harsh weather and varied ambient conditions. The equipment shall meet all state and federal requirements for its type. The equipment shall be modular in design so as to act as a stand-alone unit; compact so as to fit in the tight confines of a drydock area; portable so as to be transported by forklift then lifted by overhead crane; and ruggedly constructed so as to endure in a marine industrial environment. Multiple machines of the same type and capacity must be of similar design and construction. The workmanship shall be of such quality commensurate with the performance of skilled and experienced personnel trained in the field of work performed.

2. FASTENERS: Fastening devices subject to removal or adjustment shall not be permanently installed (for example, not swaged, peened, nor staked). Such fasteners (e.g. screws, pins, and bolts) shall be installed by which the degree of tightness is not altered because of normal operation or from vibration. Screw type fastening devices shall be tightened to defined torque limits as established by the manufacturer's standard.