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Be Safe. Be informed.
Do you know what to do in case of a chemical emergency?
This page is designed to give you and your family the information and
tools you need to be prepared in case there is a chemical emergency.
Shelter-In-Place
What is Shelter-In-Place?
Shelter-in-place is a proven and effective method of protecting both you and
your family from the hazardous effects of chemical accidents, such as liquid
chemical spills, vapor releases and fires involving hazardous materials. Such
accidents, while rare, could happen at any time and virtually anywhere.
Possible sources of a chemical emergency include manufacturing facilities,
chemical plants, warehouses, retail establishments, farms, agricultural product
centers, gas stations, and transportation (such as trucks and rail cars).
How do I Shelter-in-Place?
- Immediately take your family and pets indoors
- Tightly close and latch all doors and windows
- Turn off all fans, heating and air conditioning systems
- Close fireplace dampers and any other vents to the outside
- Go to an above-ground room (not the basement) with as few windows as
possible and close the door
- Stuff damp towels in crack of door bottom
- If necessary, seal doors, windows and any vents with duct tape and plastic
sheeting
- If you smell chemicals, breathe through wet washcloths or towels
- Stay in the room and listen to the radio or watch TV for further
instructions
- If told to evacuate, follow instructions given by emergency personnel
Frequently Asked Questions
When should I shelter-in-place?
Why not evacuate?
What if I’m in a vehicle?
What about children at school?
Why an above ground room?
How will I know it is safe to go outside?
Should I call 911 for information?
What media sources will have emergency information?
What about emergency supplies?
What do the siren sounds mean?
What is the siren alarm / emergency system testing
schedule?
When should I shelter-in-place
You should follow shelter-in-place procedures whenever you receive notification
of a chemical emergency. This may be over the radio or cable television,
directly by emergency personnel, or by some type of warning system (such as
sirens or telephone alert system). You should also shelter-in-place when you
see or smell any unusual chemicals in the air.
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Why not evacuate?
While evacuations may be needed in rare situations, there would normally not be
enough time to safely evacuate all affected individuals. Evacuation also
endangers emergency personnel and individuals being evacuated by potentially
exposing them to the chemicals in question.
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What if I’m in a vehicle?
If you are inside a vehicle during a chemical emergency, stop the vehicle at a
safe location as soon as possible. Do not attempt to drive home or to another
location. Shut off the vehicle’s engine, and follow the same basic
shelter-in-place procedures. Roll up the windows, close vents, and turn on the
radio for further instructions.
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What about children at school?
If your children are at school or other care provider, do not attempt to get
them. Doing so could put you and them in extreme danger. They are safest at
school until the emergency is over.
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Why an above-ground room?
Unlike a tornado emergency, basements are not recommended shelter locations for
chemical accidents. Most chemicals are heavier than air and will seek low lying
areas, like basements. So, an above-ground room is the safest spot during a
chemical emergency. If you do not have an above-ground room, a ground-level
room will work fine. If possible, select a room on the side of the house
opposite from the source of the chemical.
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How will I know it is safe to go outside?
This will depend on the nature and location of the emergency, but could occur
in one of several ways: radio, television, directly by emergency personnel
or via an automated telephone dialing system.
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Should I call 911 for information?
Authorities request that you not call 911 unless you have an emergency or need
immediate assistance. Non-emergency calls to 911 will tie up phone lines and
dispatch personnel, preventing them from addressing true emergencies.
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What media sources will have emergency
information?
Tune into your local media outlets for additional emergency information.
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What about emergency supplies?
It is recommended that you have supplies assembled for all types of
emergencies, including chemical accidents. Suggested items for chemical
emergencies include: bottled water, towels & washcloths, plastic sheeting,
duct tape, scissors (for cutting plastic), radio, flashlight, extra batteries,
and a first aid kit.
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What do the siren sounds mean?
Muster Alert
Siren (Site
Evacuation)
Building
Evacuation | The Muster Alert, Site or Building Evacuations sirens mean that
Hemlock Semiconductor employees and contractors need to take action by either
sheltering-in place or evacuating a building/area. Even though you may hear
them, these sirens are meant for those groups only. |
| Community Warning | This siren alerts Hemlock Semiconductor neighbors to go inside
and shelter-in-place. This siren would be activated in the event of a vapor
release that travels or would potentially travel off site. |
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What is the siren alarm / emergency system testing
schedule?
| Alarm / System | Frequency | Schedule |
| Building evacuation and muster alarms | Monthly | First weekend of month (Saturday or Sunday; time will
vary) |
| Site evacuation siren | Monthly | First Monday of month @ approximately
9:00 am |
| Contractor Emergency Notification System (sirens) | Monthly | First Monday of month @ approximately
9:00 am |
| Emergency Telephone Dialing System (Dialogics) | Quarterly | First Monday of February, May, August & November starting @
6:45 pm |
| Community Warning Sirens | Quarterly | First Monday of February, May, August & November
@ 7:15 p |
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