Continuing Energy Conservation

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Continuing Energy Conservation Education Fume
Hood Occupancy Control
Steve Havlik Director, NAFTA Facility Management
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Energy Conservation Through Education

• All Tarrytown employees and nested contractors
  are required to attend formal Site EHS Training
  each year.
• Lab personnel attend two 3-hour classes
• Office personnel attend one 2-hour class
• Since 2001, Engineering Facility Operations has
  been allocated 20 minutes during each class to
  address energy conservation and associated
  building operations activities.
• The following slides were presented to the lab
  personnel last October.

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Energy ConservationFume Hood Occupancy Control
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Some current statistics

• What was our total energy bill at Tarrytown for
  2004?
• In 2004 we paid 1.29 million for utilities
  (electricity, natural gas water).
• Since 2000 our conservation measures have reduced
  site energy consumption by 42 resulting in a
  cost reduction of 12.
• In 2005 we are estimating 1.54 million for
  utilities.

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What we have all been hearing about
Under the current market conditions, beginning in
December we are facing a 70 increase in the unit
cost we pay for natural gas.
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What is our largest energy consumer?

• Question What function in Tarrytown consumes the
  largest amount of energy?
• Answer Conditioning of air in the Lab building
  (heating and/or cooling).
• We have a once through air system in the Lab
  building.
• If we can reduce the volume of air flowing
  through the building then we can reduce the
  amount of energy required to condition it.

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How do fume hoods factor into energy conservation?

• The 218 fume hoods account for the vast majority
  of the exhausted air in the Lab building.
• If we can reduce the amount of air exhausted this
  will reduce the amount of air that is supplied
  into the building.
• Less air supplied into the building is less air
  that needs conditioning. Less conditioning
  translates to less energy required.

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Fume Hood Program Summary

• Current Set-up The majority of our fume hoods
  currently setback to 60 FPM at 600 p.m. and then
  ramp back up to full face velocity (70 or 100
  FPM) at 600 a.m.
• New Set-up After 600 a.m. - Allow the user to
  designate EACH DAY when a participating fume hood
  will ramp up from 60 FPM to full face velocity by
  simply pressing a button on the hood Operator
  Display Panel (ODP).

RAMP
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How this will help us save?

• When a person is out of the lab on vacation,
  business travel, an all day meeting or just doing
  a office work for the day the hood(s) will remain
  at 60 FPM for the entire day.
• If a person has a meeting in the morning or is
  doing office work and does not enter the lab
  until mid-day the hood(s) will remain at 60 FPM
  for several hours longer than the current
  arrangement.
• The majority of lab workers enter the building
  each business day between 8 and 9 a.m. and even
  if they go directly to work in the lab this still
  allows the majority of the hoods to operate at 60
  FPM for an additional 2 - 3 hours a day (instead
  of 600 a.m. ramp up).

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How much can this save Ciba?

• On a one hood basis the savings may seem small
  BUT, the opportunity exists to apply this to 90
  of the hoods in the building.
• Based on estimates (made before the recent
  hurricane season reeked havoc on the energy
  markets) it was estimated that this could save
  Ciba 25,000 annually. But, as energy prices
  continue to soar this savings could be
  considerably more.

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How will the new hood operation work?

• Participating fume hoods will stay at 60 FPM
  until the user presses the button on the local
  Operator Display Panel (ODP).
• Once pressed, the hood will ramp up to the full
  face velocity (70 or 100 FPM) within 5 seconds.
• The user should confirm the proper operation by
  looking at the readout on the ODP.
• The hood will remain at full face velocity for
  the remainder of the work day.
• At 600 p.m. participating hoods will return to
  60 FPM (as they have been for the past 3 years).

RAMP
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How will the new hood operation work?

• To prevent a user from working in a hood that has
  not been ramped up to full face velocity the sash
  alarms will be modified so when at 60 FPM the
  sash cannot be opened more than 2 without an
  alarm sounding.
• Incentive to close your sashes at night avoid
  coming in each morning to the sound of sash
  alarms!

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New Hood Signage

• Addition of a new direction card on each hood and
  labeling of what button to press on the ODP.

RAMP
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Revised Hood Signage

• Alteration of the existing hood classification
  signage.

Class 100 Fume Hood Fume Hood
_______________ Monday Friday after 600 a.m.,
AND after the RAMP button is pressed once on the
Operator Display Panel, this fume hood will
operate with a nominal face velocity of 100 FPM
until 600 p.m. At all other times it is
programmed to operate with a nominal face
velocity of 60 FPM. If you attempt to open the
sash while it is operating at 60 FPM a local
alarm will sound. Refer to EHS-5 Laboratory
Ventilation for further details on the
classification of this fume hood. Changes to
Fume Hood Operation If you need to change the
operation of this fume hood (either flow rate or
hours of operation) contact the Engineering
Department on extension 4084, Monday Friday
745 a.m. 400 p.m. Provide your name, phone
extension, Fume Hood and an engineer will
contact you to discuss and verify the required
changes.
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Pilot Program

• A pilot program with hoods operating under the
  new method has been in successful operation since
  August in Labs 531 532.
• All lab personnel utilizing Labs 531 532 have
  endorsed the new operation and agree that it has
  not impeded their daily lab operation.

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Program Roll-out

• Alteration of all participating hoods will
  commence in November.
• How will you know?
• Personal visit to each lab during change over.
• Hoods signage will change.
• Sash alarm will sound if you attempt to open sash
  without ramping up hood.
• If you have any questions after conversion,
  contact Engineering at x4084.
• Thank you for your continued support of the
  energy conservation program here in Tarrytown.

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Results of Fume Hood Occupancy Control