SOW Attachment 001 - Site assessment report.pdf

1901 Ulmerton Rd., Suite 195 ● Clearwater, FL 33762 ● (727) 570-9506 ● (727) 568-9546 fax

Hampton VA Medical Center Building 110B Pharmacy Compliance Report

100 Emancipation Drive, Hampton, VA 23667 By: Chris Culbertson, AIA, David S. Bess, PE, and Pete Pastore, PE

December 12, 2019

Table of Contents

Introduction……………………………………………………………………………………………………… 3

Architectural Recommendations and Analysis………………………………………………….. 3-5

Site Visit Photos – Architectural.………………………………………………………….…………… 6

Architectural Diagram………………………………………………………………………………………. 7

Mechanical Observations…………………………………………………………………………………. 8-9

Mechanical Recommendations………………………………………………………………………… 9-11

Electrical Observations……………………………………………………………………………………. 11-13

Electrical Recommendations……………………………………………………………………………. 13-14

Site Visit Photos – Mechanical……………………………………………………………..…………… 15

Site Visit Photos - Electrical……..………………………………………………………..……………… 16

Budget……..………………………………………………………………..……………………..……………… 17

Appendix

A. Existing Floor Plan

B. Pharmacy Service - Room Data Sheets

C. Proposed Airflow Schematic and Air Balance

D. Preliminary OAU selection

E. Negative Pressure Air System Detail

F. Preliminary Load Calculation for Pharmacy Suite

G. Controls System Cutsheet

H. FPH Cutsheet

I. Preliminary Exhaust Fan Selection

J. Preliminary HWC Selections

K. Preliminary Bag-In/Bag-Out Filter Selection

ASE was commissioned by the Hampton VA Medical Center to investigate the existing conditions within the pharmacy, identify the deficiencies with the previous design and installation, and make recommendations that will bring the spaces into compliance with the VA design guidelines, USP 797, and USP 800. The current layout within the pharmacy has four primary spaces:

- One non-sterile, hazardous breakdown room (also known as the Unpack room)

- One sterile, hazardous buffer room (also known as the Oncology room)

- One sterile, non-hazardous buffer room (also known as the Ad-Mixture room)

- One shared Ante-Room that is serving both buffer rooms.

See the floor plan in the Appendix for the room locations and any references to room features.

The lab is located at 100 Emancipation Dr., Hampton VA, in Building 110B on the South portion of the ground floor within a portion of the pharmacy. The rooms finishes consist of rubber sheet flooring with integral coves with top cove trim and welded seams, painted drywall walls, painted drywall ceilings, recessed lights, recessed HEPA filters, ceiling supply and return grills, recessed sprinkler heads, solid surface built in cabinets and counters, aluminum storefront doors and windows and associated elements. There are non gasketed aluminum and glass 12” pass thru boxes in three locations. The portion of wall between the pharmacy and Ante-Room has pass thru glass reach in coolers. There is one stainless steel sink in the Unpack room and one also within a cabinet in the Ante-Room.

The intended pressures of each room are negative in the Unpack and Oncology rooms and positive in the Ad- Mixture and Ante-Room.

The existing pharmacy has two exits; one double door that swings in the direction of travel and one single door that swings into the pharmacy space. The building’s closest exits to the exterior are a double door to the South that swings in the direction of travel at grade level sidewalk and a double out swinging door at the loading dock that leads to steps.

The following are the deficiencies discussed and observed, VA Design Guide standards and Recommendations:

Note: See sketch mark-up within this document for Recommendations.

- The rubber sheet flooring seams are poorly welded. In some areas the flooring as well as cove base is not adhered properly. The top band trim in the cove base is loose and creates a clean hazard as well as difficult to clean and keep clean. The flooring stops on both sides of rooms at doorways under threshold and is not continuous. The rubber flooring is subject to scuffs and marking and creates a high maintenance material.

o VA Design Guide Standard: Rubber smooth, non-shedding, cleanable, seamless and nonporous, heat or chemical welded seams with integral cove base.

Recommendations: Many cleanrooms are designed with troweled epoxy flooring and integral base which provides for no seams and extremely durable and chemical resistant flooring. If approved as a change to VA guidelines, this method would be preferred. However, a Rubber seamless sheet product is acceptable with integral base with all welded seams and fully adhered. A trim cap should not be applied to the top of the cover base as this top edge should be adhered to the wall and sealed.

- The walls are painted with what appears to be not epoxy and is non-cleanroom type paint, egg-shell finish in lieu of high gloss and not washable or durable for cleanroom environments.

o VA Design Guide Standard: High Build Glazed coating on gypsum wall board.

Recommendations: Provide new high gloss epoxy paint.

- The ceilings may not be painted with required epoxy paint similar to walls. There are access panels installed and recessed in the ceilings that are not gasketed or sealed in any way. One or more recessed sprinkler head escutcheon has been caulked.

o VA Design Guide Standard: High Build Glazed coating on gypsum wall board. Gasketed access panel product.

Recommendations: Provide new high gloss epoxy paint on ceiling. Provide new gasketed access panel by Jay R. Smith. Remove the sealant around the sprinkler head, however; ensure that sprinkler head is sealed above ceiling and plate is tight to ceiling.

- The doors are 3’-6”x7’ aluminum, full glass, swing storefront type frames and system with open joints in the metal with push-pull bars. The frames are set in the middle of the wall creating edges with large caulk joints at wall junctions. These windows create a hazard with potential bacterial growth at joints. Windows are not typically needed when cameras are present. The cleanroom doors have actuators-auto openers on the closers connected to motion plates on the wall beside the doors. These motion devices activate with any slight movement and are not proper for cleanroom. The closer-activators are large above the door and create a flat condition that creates a non clean area.

o VA Design Guide Standard: Aluminum 4’x7’ sliding door with view window with push-button plate.

Windows are not indicated in design guide within Ante-Rooms, compounding and storage however are required in sterile hazardous rooms.

Recommendations: Sliding doors are difficult to keep clean and difficult to get a tight seal. Existing swing aluminum doors can remain as long as VA accepts 3’-6” width in lieu of VA standard 4’. Provide push button activation for doors in lieu of motion. Assure that seams in frame are sealed. Provide aluminum sloped frame above door opener and seal all joints. Remove all windows and infill with gypsum wall board and framing.

- There are built in counters and cabinets with the flooring cove attached to the cabinets. The counters are on wood substrate with brackets under creating unclean elements and elements difficult to clean.

o VA Design Guide Standard: Mobile shelving and tables are indicated in Design Guide in diagrams.

However, casework and countertops are mentioned and to be a solid surface type material with integral sinks.

Recommendations: Remove all counters and casework built in and provide stainless steel work benches, tables and shelving. Remove cove base around casework. Remove counter with sink and provide large deep and wide SS wall mounted sink.

- The reach-in coolers create a breech in the Ante-Room from the pharmacy because of the glass doors on both sides. These coolers only need to be accessed from the pharmacy.

o VA Design Guide Standard: Reach in coolers are in the design guide but not as pass thru-two sided.

Recommendations: Relocate smaller reach in cooler to internal pharmacy area. Infill removed cooler location with framing and gypsum wall board and provide new closet to the Ante-Room. Construct new wall to create alcove behind double reach in coolers and close off from Ante-Room.

- The small aluminum pass-thru’s are not sealed.

o VA Design Guide Standard: Pass-thru’s should be sealed gasketed type.

Recommendations: Provide new pass thru devices in locations indicated that are gasketed per Clean Air products or equal. Provide new pass thru in Ante-Room from pharmacy at user’s request.

- There are return grills in the ceilings of the cleanroom. Typically low wall returns are most ideal within thick walls or chases in walls.

o VA Design Guide Standard: Chases within rooms with low wall returns.

Recommendations: Remove all ceiling returns and provide new low wall returns as indicated. Remove one existing low wall return and build new at the alcove behind cooler. See Mechanical Recommendations.

- The doors can be opened at any time. Typically all doors within a clean suite should be interlocked so that only one can be opened at a time.

o VA Design Guide Standard: Design Guide architectural does not indicate interlocking.

Recommendations: Provide interlock devices on all doors within this suite so that only one door can be open at any given time. See Electrical Recommendations.

- The sinks are not wide nor deep enough for proper hand and arm washing. There are eye washes on both sinks. The sink in Ante-Room has an insta-hot under the sink but the other sink in the Unpack room does not. The eye wash stations must have “temperate” or warm water; thereby they should have an insta-hot device to regulate this water temperature at all times.

o VA Design Guide Standard: Design Guide calls for an emergency tempering valve to mix hot and cold water for eye wash. Design Guide calls for wall mounted vitreous china lavatory sink 7”x15”x10”.

Recommendations: Provide 24” wide x 12” deep SS wall mounted sink with goose neck faucet with foot operator, integrated eye wash with insta-hot device. Provide a built metal stud/drywall framed return-exhaust over the sink.

- The plumbing pipes and related under sinks are not properly sealed within the two areas.

o VA Design Guide Standard: No information regarding these elements are specifically addressed other than piping is concealed within walls/cavities.

Recommendations: Seal skirt cabinet around elements below sink.

- There appear to be an excess number of outlets not needed. Outlets and switches are not sealed properly and gasketed. Some outlets are standard and some emergency, critical, dedicated and on emergency.

Required emergency and generator outlets need to be identified and confirmed.

o VA Design Guide Standard: Sealed receptacles are required.

Recommendations: Provide sealed outlets and remove not necessary receptacles.

- As stated in the general observations; the existing pharmacy has two exits; one double door that swings in the direction of travel and one single door that swings into the pharmacy space.

o VA Design Guide Standard: No specifics are identified.

Recommendations: Provide new alcove and new out swinging 4’ wide door to second means of egress from the pharmacy. See diagram below.

Site Visit Photos - Architectural

Remove trim around cove base and adhere cove base to wall and seal edges. Provide welded seams on rubber flooring to extend completely under threshold of doors to adjacent room

Remove counters entirely.

Replace pass thru with gasketed type. Remove interior windows and infill with wall.

Provide sloped angled aluminum trim on top of door closer devices with seamless and sealed edges

Remove single cooler and relocate and provide wall and closet to Ante-Room.

Provide wall alcove behind double cooler area.

Remove windows beside all doors and infill with wall. Remove hand air dryer.

Remove elements under sink not necessary and seal skirt around or conceal within wall/cavity.

Architectural Diagram

Mechanical Observations:

The original design does not comply with the minimum requirements that are listed in the VA’s HVAC design manual, pharmacy design manual, and the fire protection design manual. Deficiencies that were found in the original design and the field conditions are listed below.

- The original unit that was installed is not properly maintaining temperature and humidity to meet the requirements listed in the VA design manual (68°F, 30%-60%RH). Refer to the requirements for each of the cleanroom spaces in the Pharmacy Service-Room Data tables in the Appendix. The pharmacy staff reported that temperatures have been observed as high as 80°F and humidity climbing above 70% at times.

- Lay-in ceiling return grilles were installed to serve fan-powered HEPA modules with re-circulated air. USP

797 requires all air returns in the sterile cleanroom suite to be located low on the wall.

- Hazardous and non-hazardous exhaust air was designed and installed to share a common exhaust duct that leads to an exhaust fan located on the roof. This design mixes non-hazardous exhaust with hazardous exhaust and the entire airflow must be classified as hazardous. These hazardous exhaust sources were not found to have HEPA filtration. VA guidelines require all hazardous exhaust to be HEPA filtered prior to discharge to environment.

- The VA pharmacy design manual specifies that al exhaust ductwork must be made of stainless steel. The original plans did not call for stainless steel ductwork on the exhaust and it was not found installed on the exhaust systems during the site visit.

- The original design for the buffer rooms incorrectly listed the minimum air changes per hour (ACH) rate as

30 ACH. The VA pharmacy design manual requires a minimum of 35 ACH for USP 797 and USP 800 buffer rooms.

- Per the VA design manual, the dual purpose Ante-Room must be served with single pass air (100% outside air and 100% exhausted minus exfiltration required for space pressurization). The total airflow supplied to the room currently only contains 10% outdoor air and the exhaust airflow is also only about 10% of the total airflow in the room.

- Differential pressure monitors were reporting inconsistent readings. ASE observed the pressure relationship between the Ad-Mixture and Ante switch back and forth from positive to negative multiple times. The pressure relationship between Oncology and Ante was much more negative than required, exceeding -0.03 IWG at times during the site visit. The differential pressure requirements listed in the VA pharmacy design manual specify that non-oncology buffer rooms must maintain a pressure differential of

0.02 inches of water gauge (IWG) positive with respect to the Ante-Room. For Oncology buffer rooms, they must maintain a pressure differential of 0.01-0.03 IWG negative with respect to the Ante-Room.

- The pressurization issues appeared to be caused by a deficiency in the original design and installation of the HVAC controls system. ASE surveyed the existing packaged rooftop unit that was serving the pharmacy and found that the supply fan was cycling on and off, the motorized damper on the OA intake closed completely, and the compressors had not been energized in some time. There was also a buildup of water in the unit due to the lack of condensate drainage piping connected to the unit. Refer to Site Visit

Photos - Mechanical.

- Some of the existing HEPA fan-filter units did not appear to be functioning. Very low airflow was felt coming from the face of the units. ASE suspects that supply air from the unit was being pushed through but the fan was not running in the FFU itself. The FFU fan needs to be interlocked to the supply air fan from the outdoor air unit to ensure that the full design airflow is being achieved in each space to meet minimum ACH requirements. Additionally, the speed control options for the installed FFUs were not accessible and the speed controls were not easily modifiable.

- Concealed sprinkler heads were found in each of the pharmacy spaces. The VA fire protection design manual states that “…concealed sprinklers are not permitted to be used for new construction in VA facilities because there are none that have passed the FM (Factory Mutual) test for quick response…” and then goes on to list conditional exceptions that permit their use. These exceptions permit the use of concealed sprinklers in USP 797 rooms but still exclude negatively pressured USP 800 rooms. The negatively pressurized spaces (Unpack and Oncology) currently have concealed sprinkler heads.

- An existing wall cavity was found that houses the gauges for the medical air and vacuum systems that previously served this area. These systems have been out of commission but the piping and gauges remain. Refer to Site Visit Photos - Mechanical. This wall cavity and the existing piping/gauges are difficult to clean and should be removed. The gauges should be demolished and the piping will need to be cut and capped as required to allow for the infill of the cavity.

- The exhaust duct connection to the containment primary engineering control (C-PEC) in the Oncology buffer was not installed concentrically and the penetration through the ceiling is not sealed properly leaving an opening to the ceiling plenum space. Refer to Site Visit Photos - Mechanical. Cleaning between the C-

PEC and the wall is not possible in the current location. The C-PEC will need to be moved out at least 6” away from the wall to provide access to the rear for cleaning. The existing exhaust duct penetration will need to be repaired and a new opening will need to be created directly above the new location of the duct connection of the C-PEC. This opening should be sealed to limit cross contamination with the ceiling plenum space.

Mechanical Recommendations:

The following recommendations are provided in order to address the deficiencies noted in the Observations portion of this report. These recommendations are intended to bring the pharmacy suite into compliance with the requirements of the VA design manuals, USP 797, and USP 800.

o There are multiple issues with the existing exhaust systems including deficient airflow, the lack of

HEPA filtration, and they are not ducted with stainless steel ductwork. The existing fans are not sized properly and do not have the capacity to draw the airflow required. The required exhaust airflows can be found in the airflow schematic diagram and air balance in the Appendix. The location of the existing fans is also difficult to access for maintenance. ASE recommends replacing the existing exhaust fans with two fully redundant laboratory exhaust fans. These fans must also be provided with dedicated bag-in/bag-out HEPA filter modules upstream of the fans. The benefit of providing two redundant fans is that the HEPA filters, and the fans themselves, can be serviced at any time without taking the exhaust system offline and the pharmacy out of compliance.

o The existing exhaust ductwork must also be replaced with stainless steel ductwork that is sized appropriately for the increased exhaust airflow that is required to maintain the pressure requirements within each room.

o The existing unit will need to be replaced in order to meet the air change requirements and the temperature/humidity requirements. The existing unit does not have the capacity required to condition the total airflow that the pharmacy will require to come into compliance with the VA guidelines. This unit should be provided with a hot gas reheat coil and a liquid subcooling coil to adequately condition 100% outdoor air year round. Please see the preliminary equipment submittal in the Appendix for more information regarding the new unit. In addition, this unit should be provided with a dedicated controls system o The airflow schematic diagram and air balance in the Appendix details the airflow required to each space from the packaged outdoor air unit. The air change rate requirements that are listed in the proposed air balance exceed the minimum requirements shown in the VA pharmacy service room data sheet in the Appendix. These rates have been exceeded to account for fluctuations such as door opening and excessive filter loading in the fan filter units. In the two buffer rooms, the proposed design airflow exceeds the minimum requirement by 5 ACH. The minimum requirement for an Ante-Room is 25 ACH per the VA design manual but the proposed design by ASE reclassifies this space to ISO 7 in order to comply with the requirements of USP 800. The reasoning for this reclassification is explained in greater detail further down in this section.

o The existing supply and exhaust ductwork is routed down from the roof to the first floor through openings in the roof, interstitial space slab, and wall chases. In order to accommodate the increased size of the ductwork, the openings and chases will need to be increased in size.

o Hot water reheat coils need to be installed on the supply drops to each room in order to properly maintain temperature in each individual space and provide heating during winter conditions.

o To satisfy USP 797 requirement for low wall returns, each existing ceiling return/exhaust grille must be removed and new low wall returns must be installed. Each sink in the clean space should be exhausted by a low wall return directly above or adjacent. Refer to the architectural portion of this report for locations in each room.

o The existing HEPA fan filter units were not operating correctly and the controls configuration that was provided is not operating correctly. ASE recommends replacing each fan filter unit with new units that are configured for constant airflow through filter loading and interlocking these with the supply fan of the new outdoor air unit.

- The last two recommendations are contingent on the review and approval of the VA staff. The guidelines described below need to be discussed by the VA review staff to determine whether the recommendations made are reasonable and adequately mitigate the risks that are presented.

o The VA fire protection design manual does not permit concealed sprinkler heads in negative pressure rooms but does not specify what type should be used in negative pressure rooms. Ceiling pendant heads and semi-recessed heads are difficult to clean and create inaccessible pockets where buildup may occur. The VA review staff will need to take this into consideration and decide whether this requirement is reasonable. ASE recommends the installation of concealed sprinkler heads in each of the four spaces with gasketed, cleanable covers, Tyco Series RFII (include gasket

Air and Duct Seal, P/N 56-908-1-001) and Viking Cleanroom Sprinkler Cover Assembly 13642-/CR.

o The differential pressure requirements listed in the VA pharmacy design manual specify that non-oncology buffer rooms must maintain a pressure differential of 0.02 inches of water gauge (IWG) positive with respect to the Ante-Room. For Oncology buffer rooms, they must maintain a pressure differential of 0.01-0.03 IWG negative with respect to the Ante-Room and at least 0.04 IWG negative to the air lock. The VA pharmacy service room data requirements require an airlock for the Oncology buffer room in order to prevent dirtier air from the ISO 8 Ante-Room from being transferred into the cleaner ISO 7 space. The current pharmacy layout is not compliant with this requirement as it does not have an airlock between the Oncology buffer room and the Ante-Room.

Pending approval from the VA review staff, ASE recommends designing the Ante-Room to have equal cleanliness to the Oncology room by providing a design that classifies the room as ISO 7 instead of installing a new airlock between the Oncology room and the Ante-Room.

- The infection control requirements during system correction will be described in full as part of the comprehensive ICRA plan that will be prepared during the renovation design. The main requirement pertaining to the HVAC will be to maintain negative air pressure with respect to adjacent spaces in all active areas of construction for the duration of construction activities. Please see the detail for the HEPA filtered negative air system in the Appendix.

Electrical Observations:

- The HVAC units serving the pharmacy are not connected to the Essential Electrical System (EES), as required in the VA Electrical Design Manual, and in NFPA codes including NFPA 70, the National Electric

Code (NEC). The EES is backed up by generator power and consists of the Critical branch, Life Safety branch and Equipment branch, as described in the 2014 NEC 517.30. This observation was based upon site investigation and the original design construction documents. The local disconnecting means for the packaged roof top unit was labeled ‘1HN2-24’, which indicates a normal power branch circuit. The two roof mounted exhaust fans did not have circuit identification as required in the original design specification section 26 05 11. The original design construction documents indicated the two roof mounted exhaust fans, ‘110-EF-11’ and ‘110-EF-12’ were to be connected to panel ‘1HN2’, which is a 480/277V normal power panelboard.

- The packaged roof top unit did not have Lightning Protection (LP) devices installed and was not connected to the existing LP system on the roof. The LP system installed on the parapet wall of the adjacent tower may provide coverage to this packaged roof top unit, based upon the zone of protection, but this could not be field verified without exact distances and tower height. The LP system is a requirement of the VA

Electrical Design Manual, which references NFPA 780, Standard for the Installation of Lightning Protection

Systems.

- The roof of the tower referenced in the previous observation is where the two exhaust fans and associated ductwork are located. While the parapet wall did have an existing LP system installed, the ductwork routed on the outside of the tower and exhaust ductwork termination stack did not have LP terminals or connecting

LP conductors installed, as required by NFPA 780. The LP system is a requirement of the VA Electrical

Design Manual, which references NFPA 780, Standard for the Installation of Lightning Protection Systems.

- Many of the 120V electrical outlets in the pharmacy are not hospital-grade devices as required in the VA

Electrical Design Manual and in the original design specification section 26 27 26.

- A few of the receptacle wall plates are red plastic, not type 302 stainless steel as required per specification section 26 27 26. These same receptacles are connected to the EES, but the wall plates were not engraved with the word “EMERGENCY”, also required per specification section 26 27 26.

- At least one of the receptacles and communication outlets in Oncology room were sealed based upon concerns that air and particulates were being pulled from the wall space through the device outlets.

Oncology room was designed as a negatively pressurized room. The issue is these devices were improperly sealed with expanding fire block foam, which is a violation of the NEC. The code violations are specifically: 2014 NEC 110.12(B) Integrity of Electrical Equipment and Connections, 2014 NEC 314.16

Number of Conductors in Junction Boxes and volume calculations, and possibly 2014 NEC 110.11

Deteriorating Agents.

- There were not enough 120V receptacles in the pharmacy room suite connected to the EES, as required in the VA Electrical Design Manual, and in NFPA codes and standards including the National Electric Code

(NEC).

- The dedicated receptacles for the built-in pass-thru type refrigerators were not connected to the EES, as required in the VA Electrical Design Manual, and in NFPA codes including the NEC. This observation is based upon the original design construction documents

- The circuits feeding the pharmacy room suite originate from existing electric room GC-107. The existing critical branch 208/120V panel ‘1LCR2’ does not have any spare circuits. Panel ‘1LCR2’ is fed from

480/277V critical branch panel ‘1HCR2’ via a 75 kVA transformer. While there are spare circuits in panel

‘1HCR2’, there may not be spare capacity in this panel to connect a new transformer and 208/120V critical branch panel. The critical branch main distribution panel (‘1HCRA’) and equipment branch main distribution panels (‘1HEQ1’ and ‘1HEQ2’) do not appear to have spare capacity. These EES panels are associated with the 660 kW generator serving building 110B.

- The door operators on the automatic doors are not connected to the life safety branch of the EES, as required in the VA Electrical Design Manual, and in NFPA codes including the NEC. This observation is based upon the original design construction documents. Also, as mentioned in the Architectural comments, the door operators should be push-button type and interlocked with other doors in the pharmacy.

- None of the lighting in the pharmacy has lighting controls as required in the VA Lighting Design Manual and in the 2018 International Building Code.

Electrical Recommendations:

The following recommendations are provided in order to address the deficiencies noted in the Electrical

Observations portion of this report. These recommendations are intended to bring the pharmacy into compliance with the requirements of the VA design manuals, VA specifications and applicable codes and standards.

o The existing and/or redesigned HVAC systems shall be connected to the EES, served from new critical branch and equipment branch panels, as required by the applicable design standards, codes and specifications. It is not known if there is adequate capacity in the EES serving building 110B. During the site investigation, it was suggested that emergency power could possibly be derived from a newly installed generator serving the operating rooms that has spare capacity. This is something that will need to be investigated further as part of the proposed redesign of the pharmacy.

o All roof mounted HVAC equipment shall be connected to the existing lightning protection system. This applies to existing equipment and ductwork not in compliance, and new equipment installed as part of the redesign.

o All non-hospital grade receptacles shall be replaced with hospital grade receptacles. All wall plates in the pharmacy that are not in compliance with the VA specifications shall be replaced accordingly. All electrical devices, junction boxes and associated conduit that were installed with expanding fire block foam should be removed and replaced. The conduit termination at the junction box can be sealed with electrical duct seal, and wall plate gaskets should be installed. Expanding fire block foam may be used to fill gaps between the junction box and wall cavity, in accordance with expanding fire foam product specifications.

o Based on site investigation discussions, there will be new pharmacy equipment installed, including new laminar flow hoods and refrigerators. New critical branch receptacles will need to be installed for powering this proposed equipment. All existing refrigerators to remain should also be connected to the critical branch of the EES.

o New critical branch panels will need to be installed to support the redesign of the pharmacy. As mentioned above, the existing EES for building 110B may not have spare capacity to support the required loads, so power may need to be derived from another generator and EES. Currently, in Electrical Room GC-107, there are no spare 208/120V critical branch circuits, (3) spare 120V equipment branch circuits and no

208/120V life safety branch panels. Based on the as-built documentation provided, the closest 208/120V life safety branch panel is located in Electrical Room GD-116; it is not known if there is spare capacity or circuits in this panel. At a minimum, a 480V-to-208/120V transformer will need to be installed in Electrical

Room GC-107, connected to the critical branch of the EES, along with a 208/120V critical branch panel to serve the critical loads of the pharmacy redesign. Exact transformer and panelboard sizes at not known at this time. These loads, along with building 110B EES capacity, will need to be investigated during the redesign, based upon Architectural, Mechanical and Plumbing equipment selection and redesign requirements.

o The door operators in the pharmacy should be disconnected from the normal branch and connected to the equipment branch or life safety branch of the EES, based upon egress and associated life safety requirements. Door operators should also be interlocked and changed from motion-sensor type to push-button type.

o As part of the proposed pharmacy redesign, the existing lighting will need to be adjusted based upon

Architectural changes. The proposed lighting redesign shall include lighting calculations as required by the

VA Lighting Design Manual. Lighting controls will also need to be redesigned to comply with applicable codes and standards. Existing circuits serving the lighting will need to be field verified and re-circuited as required by the applicable codes and standards.

o The Electrical redesign shall include provisions to support the design of all other trades including, but not limited to: Architectural, Mechanical, and Plumbing.

Site Visit Photos - Mechanical

Demolish gauges, cut and cap piping as required to infill wall cavity

Ductwork connection to BSC is not concentric and opening is not sealed to plenum.

Existing outdoor air unit located on roof. No condensate piping from P-trap

Improper condensate drain installation.

Standing water located in cooling coil cabinet of existing outdoor air unit.

Motorized damper on outdoor air unit was completely shut.

Site Visit Photos - Electrical

Exhaust fan disconnect without circuit identification label.

Exhaust ductwork stack does not have LP terminals or conductors.

Exhaust ductwork does not have LP terminals or conductors.

Existing package roof top unit does not have LP terminals or conductors.

Expanding fire block foam used in receptacle junction box.

Expanding fire block foam used at communication outlet.

Receptacle wall plate not marked as “EMERGENCY”, not type 302 Stainless Steel.

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Appendix C: Proposed Airflow Schematic and Air Balance

Submittal

7050 Overland Road Orlando, FL 32810 / USA Tel: 407.292.4400 / Fax: 407.299.6169 Email: applications@addison-hvac.com

Project number: 52097

Project name: VA Hospital Pharmacy Renov

Representative:

Location:

Note: This submittal is based on equipment and options listed on the attachment(s) and represents our interpretation of your requirements. It is the representative's responsibility to review this submittal and verify that it meets the job specifications.

Project Information Project name: VA Hospital Pharmacy Renov

Location: VA Hospital

Owner:

Architect:

MEP firm:

Mechanical contractor:

Date: 12/2/2019

Sales Representative Submitted by:

Email:

Phone number:

Product Summary Qty Tag Size Model Description

1 MAU-1 300 PRAK - Package Unit - DOAS

TAYLORB

Appendix D: Preliminary OAU Selection

Product Data -

Cabinets: S5 Cab with 4 cond fan with Microchannel Condenser Coil Cabinet Options: Vertical Supply/No Return Cooling Coil: 6 row Copper Tube Aluminum Fin DX Coil Compressor Type: Dual Scroll/Dual Circuit with lead Circuit VFD Refrigeration Controls: Standard Subcooling all circuits, Lead Circuit HGRH, HGBP all circuits CAV VAV: VAV - Variable Air Volume Evaporator Motor Type: ECM and DPT ALC Only Evaporator Motor Horsepower: ECM Supply Blower Size: ECM 450 Supply Blower Options: None Heating Types: None Controls: ALC, Standard Program, DOAS Ventilation & Controls: Motorized 2-Position OA Damper with 2-Position Actuator (ALC, Field DDC, EM) ALC Ship With Options: Equipment Touch ALC Ship With Options: ZS "Pro" Zone Sensor With Humidity Maintenance Options: 115V Convenience Outlet Maintenance Options: Condensate Overflow Switch Safety Controls: None Filters: 2 in.MERV 8 Pleated and 4 in. MERV 14 Pleated Disconnect: 100 Amp 600V, 70A Fused Disconnect Roof Curbs: 14" Curb S5 Corrosion Protection - Package: Corrosion Protection Coating- Cabinet Corrosion Protection - Package: Corrosion Protection-Coils Evap,Cond,HGRH,Sub-Cool and HWC (when selected)

Package Unit - DOAS

Size Qty Description Model Number

300 1 Package Unit - DOAS PRAK300S5A4AECC0M6B60AA00000000C0000000BEHB0

000G0BKAB

Tag(s): MAU-1

Blower HP - 6.96999979019165 Blower RPM - 1902 Supply Fan - ECM 450 High

Unit Voltage: 460-3-60

Page 2 of 19Addison Equipment Submittal

December 2, 2019VA Hospital Pharmacy Renov

Cooling Performance

Gross Total Capacity: 309.4 MBh Evaporator Face Area: 12 sq ft

Gross Sensible Capacity: 120 MBh Evaporator Rows: 6

Net Total Capacity: 302.3 MBh Evaporator FPI: 12

Net Sensible Capacity: 112.9 MBh Condenser Face Area: 53.44 sq ft

Entering Air DB / WB (Coil): 82.8 / 78.1 F Condenser Rows: 1

Leaving Air DB / WB (Coil): 47.1 / 47.1 F Condenser FPI: 19

Leaving Air DB / WB (Subcooling): 63.6 / 54.4 F Air Velocity: 250 fpm

Leaving Air DB / WB (Max. Reheat): 91.33 / 64.67 F Cooling Coil Air PD: 0.33 in H2O

Leaving Air DB / WB (Unit): 93.5 / 65.4 F

EER: 12.6 MRE: 7.17 lb/kWh

Watts: 24047 MRC: 172.54 lb/h

Unit Information Package Unit - DOAS

Model: PRAK Unit Length: 147.6 in Altitude: 0 ft

Size: 300 S5 Unit Width: 84 in Unit Weight: 3661 lb.

Quantity: 1 Unit Height: 93.3 in

Design Conditions

Supply Airflow: 3000 CFM Ambient Air DB: 95.0 F

Outside Airflow: 3000 CFM

Supply Fan ECM 450 High

Supply Fan Conditions

Fan Motor BHP:

Fan RPM:

BHP

RPM

2.79

Supply Pressure Drop Summary

External Static Pressure:

Internal Pressure Drop:

in H2O in H2O

3.00

0.54

Total Static Pressure: in H2O3.54

Internal Pressure Drop Breakdown

Cabinet: 0.04 in H2O

Filter: 0.13 in H2O

Cooling Coil: 0.33 in H2O

Ventilation & Controls: 0.04 in H2O

Tag: MAU-1

PRAK300S5A4AECC0M6B60AA00000000C0000000BEHB0000G0BKAB

Page 3 of 19Addison Equipment Submittal

Unit Electrical Data

Min Circuit Ampacity - MCA: Amps54.9

Maximum Fuse Size - MFS: Amps70

Unit Voltage-Ph-Hz: 460-3-60

Unit Amps - FLA: Amps50.2

Motors

Name/Type Fan Service Qty HP (ea.) FLA (ea.) RLA (ea.) LRA (ea.)

Scroll 2 18.6 125.0

ECM-450 High Supply 1 6.97 6.6

630mm AC Condenser Fan Condenser 4 1.3 1.6

Sound Data

63Hz 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz 8KHz Total DBA

Cabinet 66.8 89.4 83.8 90.5 85.6 81.1 76.4 70.9 90.8

Supply 49 62 79 83.0 83.0 80.0 79 77 88

Page 4 of 19Addison Equipment Submittal

0795I-20631 - PRAK 5 Series Cabinet (100% OA)

Qty: 1 Tags: MAU-1

Page 5 of 19Addison Equipment Submittal

0795I-20632 - PRAK 5 Series Cabinet (100% OA) - Vert Sply

Page 6 of 19Addison Equipment Submittal

0795I-20635 - PRAK 5 Series Cabinet (100% OA) - Clearances

Page 7 of 19Addison Equipment Submittal

0795I-20638 - PRAK RIGGING INSTRUCTIONS

Page 8 of 19Addison Equipment Submittal

0851P-2003

Page 9 of 19Addison Equipment Submittal

Submittal support-Equipment Touch Summary Page 1

Page 10 of 19Addison Equipment Submittal

Submittal support-Equipment Touch Summary Page 2

Page 11 of 19Addison Equipment Submittal

Submittal support-IO Pro 812u Summary Page 1

Page 12 of 19Addison Equipment Submittal

Submittal support-IO Pro 812u Summary Page 2

Page 13 of 19Addison Equipment Submittal

Submittal support-ZS Sensor Summary Page 1

Page 14 of 19Addison Equipment Submittal

Submittal support-ZS Sensor Summary Page 2

Page 15 of 19Addison Equipment Submittal

Mechanical Specifications - MAU-1Tag(s):

Application/Unit Type PRAK

PRAK Series are designed for dedicated 100% outside air pre-conditioning. Units are DX air-source cooling only with or without optional heat. Units offer compact footprint and vertical or horizontal discharge.

Unit PRAK

The PRAK Series packaged unit is a fully assembled heating and/or cooling system with dual refrigerant circuits (sizes 120–470).

Standard features are factory wiring with a single point power connection, phase and voltage monitor, refrigerant piping, safeties and refrigerant/oil charge (R-410A). Also included are temperature controls (either factory or field furnished) and optional features listed below.

Unit Cabinet

Cabinet is double wall design with heavy-duty frame and reinforced base. Double wall panels are constructed of G-90 galvanized steel inside and out with a polyester exterior finish for up to 2,500-hour salt-spray protection. Fixed panels on sides and top have two-inch thick, closed cell foam insulation; access panels have two-inch foam injection insulation provides an R-13 rating to reduce heat transfer losses. Access panels are fitted with one-quarter turn self-tightening latches (one lockable) and stainless steel hinges. Top panels are raised to improve water run-off and include drip edge. Heavy Duty 16-guage base pan has 0.375 inch closed cell insulation on the underside to serve as a moisture/thermal barrier and a positive seal to the curb. Bottom openings include a minimum one-half inch turned up flange. Stainless steel and/or MAGNI® 555-coated hardware reduce fastener corrosion. A double-sloped, extra-large, stainless steel drain pan equipped with drain fitting positioned on exterior of cabinet to facilitate removal of condensate and eliminate standing water.

Fans PRAK

Single 350/450/500 mm or dual 450/500 mm diameter/backward curved impeller(s) with external rotor motor that is statically and dynamically balanced according to ISO 1940 Part 1. The integrated EC motor controller is mounted with rubber dampers in a galvanized steel structure. The centrifugal impeller is made of high strength ZAmid composite material that is lightweight and extremely high metallic strength. An inlet ring provides optimum airflow at all speeds.

Cabinet Options: Vertical Supply/No Return

Airflow Configuration, vertical (downflow) supply and no return (100% OA only).

Cooling Coil: 6 row Copper Tube Aluminum Fin DX Coil

Cooling Coil, 6-row copper tube, aluminum fin DX coil will be enhanced surface aluminum fins, formed on multiple rows of seamless rifled copper tubing, arranged in staggered tube configuration with galvanized steel header plates. These tubes are mechanically expanded, firmly bonding the tube to the shoulder of each fin.