MODULE #5 MECHANICAL, ELECTRICAL, PLUMBING II

Transcription

1 MODULE #5 MECHANICAL, ELECTRICAL, PLUMBING II MICHAEL WALSH PRINCIPAL, R.G. VANDERWEIL ENGINEERS, LLP 274 Summer Street, Boston, MA (T) (F)

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3 Module 5 Agenda: 1. MEP Systems and Controls (Continued) 2. HEPA Filtration 3. Maintenance Considerations 4. Bio-Waste Management Solids & Liquids SYSTEMS AND CONTROLS II 1

4 Zone Controls Controlled and Stable Airflow Supply/Exhaust Control & Actuator Speed Must Match Fastest Not Always Better (Does Give Ability to Adjust) Conventional VAV Box Venturi Valve Blade Type Valve PneumaValve Constant Flow Valve Iris Damper MODULE 4 MECHANICAL, ELECTRICAL, PLUMBING CONSIDERATIONS I Zone Controls Significant number of components to be commissioned Review Failure Position Each Component (Open, Closed Last) 2

5 MODULE 4 MECHANICAL, ELECTRICAL, PLUMBING CONSIDERATIONS I Zone Controls Significant number of components to be commissioned Minimize Potential for Multiple Zones to Fail at Same Time (Limit Single Suite Level Controllers) MODULE 4 MECHANICAL, ELECTRICAL, PLUMBING CONSIDERATIONS I Air Handling Unit Controls Review All Potential Failure Modes and Define System Reactions (e.g. Freezestat Trip) 3

6 MODULE 4 MECHANICAL, ELECTRICAL, PLUMBING CONSIDERATIONS I Redundant Exhaust Fan Controls Consider Separate Controller for Each Fan Address Control Panel Failure Mechanical System Details Coordinate utilities to all equipment. Plan for isolation without affecting operation 4

7 Mechanical System Details Must consider all installation details and how they impact barrier Mechanical System Details Consider how to access and inspect penetrations Eliminating casework beneath counter allows for inspection of all penetrations Exposed piping up allows inspection of ceiling penetrations Where does barrier begin and end? 5

8 Mechanical System Details Exposed ductwork and piping allows flexibility while maintaining access for inspection But must balance with aesthetically pleasing work space Mechanical System Details Impact of Remote HEPA Containment & Testing 6

9 Plumbing Systems Water Systems Backflow prevention for services entering containment Recirculation of tempered water may need to occur outside containment zone Liquid Waste Disposal Batch Processing Continuous Feed Plumbing Vent Containment In-line HEPA filters Plumbing Systems Piping Material Mechanical joints (standard systems only) Welded steel single wall Double wall gravity containment piping where in accessible Double wall piping for pressurized systems Penetration Seals All seals accessible for visual inspection Bio-seal caulk at all penetrations into BSL-3 Welded steel piping above biocontainment space ceilings 7

10 Plumbing Systems Double Wall Collection Tanks Double Wall Piping Plumbing Systems Underground Double wall polypropylene Thermal weld joints Vs Solvent weld Environmental issues Floor drains Vs Trench trains Much more space required for Y, T and trap connections 8

11 Fire Protection Systems Penetration Seals All seals accessible for visual inspection Bio-seal caulk at all penetrations into BSL-3 Welded steel piping above biocontainment space ceilings Fire Water Drainage Sprinkler Discharge Containment Tank Containment tank provided to collect sprinkler discharge Electrical Systems Penetration Seals Electrical seal fittings accessible for inspection Bio-seal conduits at initial penetration Power Supply Redundant Electric Power Supply On site generation for campus UPS (battery) emergency lighting Standby Power - Required For All ventilation systems Lab decon systems to allow shutdown Security 9

12 Electrical Systems Right sizing standby generator with containment critical loads Location of outlets for containment equipment/ layout Coordination with Low Voltage Systems like security, tel/data, bms, fire alarm Electrical Systems The wrong size can have big cost implications! 10

13 Electrical Systems Programming and user criteria information needed. Identify what systems on standby power in equip matrix Identify how long standby power is needed Decon systems on standby Containment ventilation /lights/bms/monitoring system Electrical Systems Use software to size generator based on equipment matrix Coordinate redundant systems with Mechanical Engineer to avoid double dipping 11

14 Electrical Systems Minimize generator size by creating multiple step loads Multiple transfer switches with different time delays BMS starting sequence coordinated with mechanical Electrical Systems There is no clear industry sizing standard project specific Standards such as NIH, USDA, CDC and ASHRAE vary significantly in opinions when identifying optional standby power needs USDA/ARS standards recommend keeping standby power to a minimum while the NIH is more liberal. 12

15 MEP Containment Sealing Maintain a tight envelope at the containment boundary. Includes: o Sealing Light Fixtures o Sealing All Conduit Penetrations o Sealing Outlet boxes o Sealing Door Bottoms & Edges o Sealing Door Jambs o Sealing All Penetrations o SEAL - SEAL - SEAL HEPA FILTRATION 13

16 Ganged HEPA for Multi-Room Zone or Suite Ganged HEPA for Multi-Room Zone or Suite Large Headers Must Pass Gas Tight Duct Testing 14

17 Individual HEPA for Each Space Comparison of HEPA Options GANGED Local Maintenance Requires large S.S. headers Air valves are on Dirty side of HEPA may have to achieve gas tight construction N+1 achieved with one more large HEPA bank Requires less floor space May require suite level shut down for decon/certification SINGLE Maintenance is spread out Only requires small low pressure S.S. Duct Air valves are on clean side of HEPA N+1 of each unit can be very expensive Requires more floor space Allows isolation of one room at a time for decon/certification 15

18 MAINTENANCE Maintenance Maintenance of equipment and systems outside containment. Minimize penetrations through barrier 16

19 Maintenance Containment Boundary All service access to equipment, dampers, HEPA filters, piping etc located outside the containment boundary Options Partial Interstitial Access to Valves and Controls Only with Remote HEPA Access to HEPA Tough to Maintain and Decontaminate 17

20 Options Full Interstitial Options Full Interstitial Items Requiring Access: Exhaust HEPA filters Access to Allow Decontamination in Place Supply Bioseal Dampers Reheat Coils Environmental Room Condensing Units Process Chillers for Low Humidity Spaces Local Supplemental Cooling Coils Supplemental Humidifiers Supply and Exhaust Duct Mains Heating Hot Water Piping Chilled Water Piping Process Steam Piping 18

21 Options Combination of Options Provide access from interstitial space without buying full floor Decontamination/Waste Disposal 19

22 Room Decontamination Methods VHP Paraformaldehyde Ethylene Oxide Chlorine Dioxide Gamma Cell Protocols Vendors Room or Suite Level Primary Containment Room Ductwork Waste Decon/Disposal Systems Solid Waste Liquid Waste Regulatory Water Quality Public Perception 20

23 Autoclaves Solid Waste Liquid Waste Kill Systems Batch System 21

24 Liquid Waste Kill Systems Continuous Waste Decon System Liquid Waste Kill Systems Localized Collection System 22

25 MODULE 4 MECHANICAL, ELECTRICAL, PLUMBING CONSIDERATIONS I Tradeline Takeaways Zone Airflow & System Control Components Critical Select Materials and Components for MEP Systems to Meet Criteria Identify Emergency Power/Standby Power Needs Can Consider Static Conditions On Failure As Part of Risk Assessment Questions? 23

26 MODULE #5 MECHANICAL, ELECTRICAL, PLUMBING II MICHAEL WALSH PRINCIPAL, R.G. VANDERWEIL ENGINEERS, LLP 274 Summer Street, Boston, MA (T) (F)

27 Date: Session: Presenters: Metrics Tools Resources Innovative Ideas Proofs

28 Date: Session: Presenters: Metrics Tools Resources Innovative Ideas Proofs

29 Date: Session: Presenters: Metrics Tools Resources Innovative Ideas Proofs

30 Date: Session: Presenters: Metrics Tools Resources Innovative Ideas Proofs