UNLOCKING THE SECRETS: Basic Understanding of Construction Documents for Biosafety Professionals

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UNLOCKING THE SECRETS  Basic Understanding of
Construction Documents for Biosafety
Professionals
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agenda

• THE DESIGN PROCESS
• KEY ISSUES
• Room Construction
• Directional Airflow
• Redundancy
• Drawing Overview
• Architectural
• HV AC
• SUMMARY

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• DESIGN PROCESS

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design process

• SCHEMATIC DESIGN
• Establish Basic Concepts and Relationships
  Exterior and Interior
• Minimum Performance standards

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design process

• DESIGN DEVELOPMENT
• Scope and intent defined
• Final relationships defined

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design process

• CONSTRUCTION DRAWINGS
• Details and intent for all requirements
• Commissioning

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• KEY ISSUES

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key issues

• HOW SEALED IS SEALED?
• BSL-3
• Monolithic surfaces with sealed penetrations
• Smoke flow tests
• WHY IS IT SEALED?
• Performance standard achieved
• In order to effectively decontaminate room

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key issues

• Penetration sealing
• Room pressure/leak testing
• Door hardware, sweeps, seals
• Service penetrations

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directional airflow

• Directional Airflow
• Provides Zone Control of hazards and odors

Air flow from lowest to highest hazard
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key issues
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key issues
N Can Equal
2 at 50
3 at 33
N1 Can Equal
2 at 100
3 at 50
2N Can Equal
2 at 100
4 at 50
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• DRAWING OVERVIEW

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drawing overview

• General Observations
• Drawings are diagrammatic
• Dimensioned work is more accurate
• Specifications typically trump drawings
• Review all relevant documents
• Drawings
• Specifications
• Basis of Design?

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drawing overview
Floor Plans
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drawing overview
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drawing details floor plan

• Room Elevations
• Equipment
• Sink

• Gases Services
• Relationships

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drawing details reflected ceiling

• Ceiling Construction
• Ceiling Height
• Air Devices

• Light Fixtures

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drawing details details

• PENETRATION SEALING
• Look at General Notes
• Look at Key Notes
• Look at Specifications
• Look at Partition Schedules

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drawing details HVAC
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drawing details HVAC

• Relevant Information Outside Of Room
• Air Valves
• Air Systems

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drawing details HVAC

• Connection to BSC
• Note Airflow
• Exhaust ductwork construction
• May be on drawings
• May be in specifications

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drawing details HVAC

• Supply diffuser
• Location
• Airflow
• Temperature Sensor
• Differential Pressure Sensor
• Different methods for indicating

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drawing details HVAC

• Equipment
• Location
• Redundancy

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drawing details air balance

• Look at airflow offset (if basis of design)
• Air has to be made up from somewhere

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drawing details air balance

• Balance each room for 0 CFM
• (3) Rooms at 250 CFM negative
• Corridor 200 CFM exhaust
• Corridor 250 CFM negative to outside corridor
• Makeup Air -750 -200 250 700 CFM
  Supply

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drawing details controls
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drawing details controls

• CONTROL INTERLOCKS
• Speed dependent of control traffic
• Logic dependent
• HARDWIRED INTERLOCKS
• Very fast response
• Independent of controls network
• Recommended
• System status,
• High/low pressures,
• Damper interlocks

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• SUMMARY

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summary

• Review the drawings
• Ask questions
• Do you understand the drawings?
• Do the drawings define boundary sealing,
  directional airflow, proper containment, safe and
  consistent operation?
• Do you and the design professional have the same
  understanding?
• Dont Assume