DVAMC EndoDry Medical Air Study - ap final.pdf

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ENDODRY MEDICAL

AIR STUDY

mvca3548 Text Box EndoDry Medical Air Study mvca3548 Text Box Dayton VA Medical Center mvca3548 Text Box 4100 W. Third Street Dayton, OH 45428 Project No.: 2024-05258.00 mvca3548 Snapshot

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Meter Implementation Plan

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Dayton VA Medical Center

ENDODRY MEDICAL AIR STUDY

Background

The Dayton VA Medical Center (DVAMC) Building 330 is the campus’ main 9-story patient bed tower, consisting of nutrition and food services, pharmacy, patient care areas, mental health services, geriatric and extended care units, and intensive care units. The tower was designed and constructed in the early 1990’s.

Scope

Cursory review and analysis of the EndoDry Medical Air Study, project number 2024-05258.00, along with limited field investigation, have been conducted to provide recommendations to DVAMC regarding the installation of six (6) EndoDry cabinets in the Digestive/Endoscopy section and one (1) EndoDry cabinet in the Operating/Surgery section, for a total of seven (7) cabinets. This study focuses on recommending an appropriate stand-alone compressor to support the instrument air system and ensure it can supply the required instrument air to these units.

Problem

DVAMC has decided to add (7) EndoDry cabinets across the Digestive/Endoscopy and Operating/Surgery areas. However, there is currently no existing system in place that can support the installation and operation of these new units. To address this, an appropriate solution for the instrument air system must be identified, including the selection of a suitable instrument air compressor capable of supplying the necessary airflow to these cabinets. Additionally, the location for the new air compressor needs to be determined. This will involve assessing the dimensions of the units and visually inspecting potential installation sites to ensure adequate space and accessibility.

Findings

1. Need for Additional Equipment: A standalone compressor is required to handle the installation of the (7) EndoDry Cabinets.

2. Probable Installation Locations: There are three potential locations for the new compressor— the basement-level mechanical room (BD-100), the basement-level mechanical room (BD-114), or the second-floor mechanical room (2B100).

3. Pipe Routing Considerations: Efficient routing of the instrument air pipes must minimize disruption to ongoing hospital operations.

Field Investigation

A field investigation was performed on Friday, December 13th in Building 330 at the DVAMC.

Medical Air Compressor Space Assessment:

Medical Air Compressor Space Assessment:

• Basement Mechanical Room (BD-100): Limited space and identified one potential location for the compressor. However, there would be a sink and casework that must be relocated. Pipe routing would need to go up three floors to reach the Operating/Surgery section.

• Basement Mechanical Room (BD-114): Adequate space. One faucet needs to be removed for the compressor installation. The location is ideal as it would be at a corner wall. Pipe routing would need to go up three floors to reach the Operating/Surgery section and about 80’ further from (BD-100). Also, a wall-mounted service sink faucet would be removed and a floor drain would need to be installed.

• Second-floor Mechanical Room (2B100): Limited space. The location is not ideal and is cramped.

Space is also in the middle of the room and medical gas pipe routing would prove more difficult.

However, pipe routing would only need to go up one and down one to reach the units.

1.

3.

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• Potential pipe routing locations have been identified and would primarily be running along corridors and inside wall chases It is ideal to route most of the pipe's horizontal length through floors with minimal or no medical operations to reduce potential disruptions to hospital services.

Equipment Dimensions and Clearance:

• Verified dimensions of proposed compressors to ensure proper fit in selected locations.

• Measured required clearance for compressor maintenance and electrical panel.

Recommendations

Air Compressor:

• The Advantage Plus EndoDry Cabinet requires a minimum of 4.2 scfm of air and operating at 100 psi of pressure, thus a total of 29.4 scfm for (7) EndoDry units. Moreover, since the investigated locations are already limited in space, it would be prudent to consider future planning by selecting a compressor that can exceed the minimum requirements of the EndoDry cabinets, accommodating additional equipment in the future. Thus, we recommend a Powerex Triplex Compressor System to provide 30-35 scfm at 100 psi. The instrument air compressor will feature triplex compressors, offering enhanced reliability and redundancy by ensuring continued operation and load sharing, even if one compressor fails.

Location:

• We recommend installing the Instrument Air Compressor in the Basement Mechanical Room (BD-114) because it offers adequate space, the ideal location inside the room, and requires limited demolition and new work.

Pipe Routing:

• Most of the horizontal run of the piping would be located at the basement level to minimize hospital operation interruption and inside wall chases for vertical routing.

Air 30 HP

Pipe Routing Observations:

Pipe Routing:

• Most of the horizontal run of the piping would be located at the basement level to minimize hospital operation interruption and inside wall chases for vertical routing. (Refer to Pages 3-5) mvca3548 Snapshot mvca3548 Text Box mvca3548 Snapshot mvca3548 Text Box mvca3548 Snapshot mvca3548 Text Box

Laboratory Open Scroll Air Compressor System with Premium Controls

Powerex • 150 Production Drive • Harrison, OH 45030 • USA P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com

11/2019

Specification General

The Powerex Laboratory Open Scroll Air Compressor System is designed to provide clean, dry air for applications where the quality of the compressed air is critical. The standard unit is rated for a maximum of 145 PSIG. Each system is completely tested before shipment and includes:

• Multiple oil-less scroll air compressors and associated equipment.

Open Scroll Air Compressor System The package shall include multiple oil-less scroll air compressors and associated equipment. The only field connections required will be system intake, exhaust, and power connection at the control panel. All interconnecting piping, wiring, and vibration isolation pads are included with the system.

Oilless Scroll Compressor Pump Each compressor shall be belt driven oilless rotary scroll single stage, air-cooled construction with absolutely no oil needed for operation. Direct drive compressors shall not be used.

• The rotary design shall not require any inlet or exhaust valves and shall be rated for 100% continuous duty.

• Tip seals shall be of a composite PTFE material and be rated for 5,000 hours operation for 2, 3, and 5 HP pumps, and rated for 8,000 hours operation for 7.5 and 10 HP pumps.

• Compressor bearings shall be external to the air compression chamber and shall all be serviceable for extended compressor life. Bearing maintenance shall not be required until 5,000 run hours. Compressors with bearings that are not accessible for service have a limited life span and shall not be accepted.

Compressors shall have an integral radial flow fan for cooling and shall not require any additional electric cooling fans.

• Each compressor shall have flexible connectors on intake and discharge, an electric drive motor, a discharge check valve, a fan-cooled aftercooler, a condensate separator* and a high discharge temperature shut down switch.

• Each compressor module shall have an isolation valve and a moisture separator* with automatic drain.

Motor Each compressor shall be belt driven by an ODP, NEMA construction motor. OSHA approved belt guards shall be provided.

Air Receiver The system shall include an ASME air receiver rated for 200 PSI

MAWP. The tank shall be equipped with:

• An automatic electronic tank drain with manual override.

The receiver shall be internally lined for corrosion resistance.

Service Slide The service slide enables easy maintenance access to each pump and motor basemount without having to remove them from the system.

for improved pump life.

• Allows faster component replacement time.

Motor Slide Base Maintenance feature designed for easy adjustment of belt tension from the motor side on the basemount assembly.

Premium Control Panel The control system provides automatic lead/lag sequencing and automatic alternation of all compressors in order to equalize the amount of usage among the available compressors. The Premium Control Panel shall include a gateway server card and all features listed below:

• Building automation communication gateway with BacNet® protocol and Web server features. Web server features include email notifications in case the system is in alarm or has achieved one of its maintenance intervals and requires service.

• Ethernet port for connection to BacNet® server or direct connection to facility Ethernet for viewing of system operations and status via device IP-address.

• UL508-A listed control panel in a NEMA 4/12 enclosure. The panel door will include:

service required

with required service

• System alarm screen:

Laboratory Open Scroll Air Compressor System with Premium Controls

Powerex • 150 Production Drive • Harrison, OH 45030 • USA P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com

11/2019

Dry contacts are provided on a labeled terminal strip for remote monitoring of all system alarms.

Air Purification Package The air purification package shall consist of the following: dual desiccant air dryers, dual filter and regulator bank with sample ports, and dew point monitor with alarms, and all bypass piping. Piping to be brass, stainless, or type K copper, and cleaned for medical air use.

All components shall be mounted piped and wired to the air receiver.

Desiccant Air Dryers The twin-tower, heatless desiccant air dryer is designed for a pressure dew point of -40 degrees F. Each dryer is sized to meet the full SCFM requirement of the system. The dryer shall be installed and plumbed on a common steel skid to the air receiver. The dryer design shall be of the automatic pressure swing, heatless, regenerative type and shall include a solid state cycle timer, reliable switching valve design, and purge muffler for quiet operation.

The filtration system shall consist of 2 stages of filtration mounted and plumbed to the air dryer. The first stage of filtration shall include a centrifugal water separation and a 5 micron filter element with element coalescing vibration or a .01 micron or finer pre-filter with element change indicator and automatic condensate drain and installed upstream of the air dryer. The second stage shall include a 1 micron (or finer) particulate filter with element change indicator and installed downstream of the air dryer.

Filtration and Pressure Reducing Station Each filter/dryer/regulator assembly shall be plumbed with bypass valves to enable service without disrupting air flow to the facility.

Each assembly also includes a sample air port. The filtration systems consist of two stages of filtration as outlined above in the Desiccant Air Dryers section. Additionally, each assembly shall include a dual set of pressure reducing valves with pressure gauges shall be installed downstream of the final filters and shall be adjusted to an outlet pressure of 115 psig.