Hafnium powder, cas # 7440-58-6 Standard Operating Procedure

Hafnium powder, CAS # 7440-58-6

Standard Operating Procedure

Hafnium powder

This is an SOP template and is not complete until: 1) lab specific information is entered into the box below 2) lab specific protocol/procedure is added to the protocol/procedure section and
3) SOP has been signed and dated by the PI and relevant lab personnel.

Print a copy and insert into your

Laboratory Safety Manual and Chemical Hygiene Plan.
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Type of SOP:

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Process

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Hazardous Chemical

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Hazardous Class

Purpose

Hafnium powder is used in the manufacturing of control rods for nuclear reactors.

Physical and Chemical Properties / Definition of Chemical Group

CAS:	7440-58-6
Class:	Pyrophoric, Flammable
Molecular Formula:	Hf
Form (physical state):	Solid, Powder
Color:	Grey metallic
Boiling Point:	4,602 ^oC

Potential Hazards / Toxicity

Potential Health Effects
Target Organs:	N/A
Inhalation:	May be harmful if inhaled. May cause respiratory tract irritation.
Skin:	May be harmful if absorbed through skin. May cause skin irritation.
Eyes:	May cause eye irritation.
Ingestion:	May be harmful if swallowed.

Personal Protective Equipment (PPE)
Respiratory Protection

Use a full-face particle respirator with type N100 (US) respirator cartridges.

Respirators should be used only under any of the following circumstances:

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  As a last line of defense (i.e., after engineering and administrative controls have been exhausted).
  
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  When Permissible Exposure Limit (PEL) has exceeded or when there is a possibility that PEL will be exceeded.
  
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  Regulations require the use of a respirator.
  
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  An employer requires the use of a respirator.
  
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  There is potential for harmful exposure due to an atmospheric contaminant (in the absence of PEL)
  
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  As PPE in the event of a chemical spill clean-up process
  

Lab personnel intending to use/wear a respirator mask must be trained and fit-tested by EH&S. This is a regulatory requirement.

http://www.asu.edu/ehs/documents/asu-respiratory-protection-plan.pdf
Hand Protection

Handle with gloves. Use proper glove removal technique to avoid skin contact with this product. Nitrile gloves are recommended.

NOTE: Consult with your preferred glove manufacturer to ensure that the gloves you plan on using are compatible with hafnium powder.

Refer to glove selection chart from the links below:

http://www.ansellpro.com/download/Ansell_8thEditionChemicalResistanceGuide.pdf

OR

http://www.allsafetyproducts.biz/page/74172

OR

http://www.showabestglove.com/site/default.aspx

Eye Protection

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  Wear chemical splash goggles and a face shield to protect from splash hazards and chemical vapors.
  

Skin & Body Protection

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  Fire/flame resistant lab coat, preferably made from antistatic material
  
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  Full-length pants
  
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  Closed-toe rubber or leather shoes
  

Hygiene Measures
Avoid contact with skin, eyes, and clothing. Wash hands before breaks and immediately after handling the product.
Engineering Controls
All operations involving hafnium powder should be handled in a glove-box.
First Aid Procedures
If inhaled… Move to fresh air immediately and give oxygen. If the person is not breathing, give artificial respiration. Avoid mouth to mouth contact. Seek immediate medical attention. Call 911 from a campus phone or [phone]. Call EH&S at [phone].
In case of skin contact… Remove all contaminated clothing. Immediately (within seconds) flush affected area for FIFTEEN (15) minutes. Seek immediate medical attention. Call 911 from a campus phone or [phone] from a cell phone. Call EH&S at [phone].
In case of eye contact… Remove any contact lenses. Use nearest emergency eyewash immediately for at least FIFTEEN (15) minutes. Seek immediate medical attention and continue eye rinse during transport to hospital. Call 911 from a campus phone or [phone] from a cell phone. Call EH&S at [phone].
If swallowed… DO NOT INDUCE VOMITING. Never give anything by mouth to an unconscious person. Seek immediate medical attention. Call 911 from a campus phone or [phone] from a cell phone. Call EH&S at [phone].
Special Storage & Handling Requirements
Storage

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  Ensure the container is tightly closed at all times.
  
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  Keep in a cool, dry, well-ventilated area away from incompatible materials and conditions.
  
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  Store under inert gas- air sensitive.
  
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  Segregate from organic materials.
  
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  Store away from heat, sparks, flame, and other sources of ignition.
  
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  Protect from sunlight.
  

Handling

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  The lab where the material is being handled has an approved / certified emergency eyewash and safety shower.
  
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  Ensure you are wearing the following minimum PPE: tightly fitting safety goggles and face shield, fire/flame resistant lab coat, full length pants, close-toe rubber or leather shoes, nitrile gloves.
  
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  Lab emergency contact information must be readily posted. Easy access to a cellular phone or land line is readily available.
  
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  Avoid contact with skin, eyes, and clothing.
  
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  Avoid inhalation and ingestion.
  
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  Avoid dust formation.
  
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  Provide adequate exhaust ventilation in places where dust is formed.
  
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  Handle and open with extreme caution.
  
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  Handle under inert gas.
  
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  Keep away from heat, sparks, flame, and other sources of ignition.
  
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  Avoid shock and friction when handling.
  
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  Take measures to prevent the buildup of electrostatic charge.
  

Spill and Accident Procedure
Personal precautions

Avoid dust formation. Avoid breathing dust, vapors, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Do not attempt clean-up without minimum PPE.

Environmental precautions

Prevent further leakage or spillage – if safe to do so. Do not allow product to enter drains.

Methods and materials for containment and clean-up

Consider material compatibility prior to clean-up. Verify spill kit is available. Sweep up and shovel. Place in suitable, closed container for disposal.

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   Immediately assess amount spilled, follow posted ASU Emergency Response Guide procedures for hazardous materials incidents.
   
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   If a chemical exposure has occurred, a fellow lab worker shall call 9-1-1 and EH&S at [phone].
   
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   Don compatible gloves and other protective PPE if not already being worn.
   
4. 
   Secure / restrict access to the area of the spill to prevent spread of the chemical.
   
5. 
   Use the available spill kit to stop and contain the spill. Bag the collected material.
   
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   Label and tag as hazardous waste and submit a pick-up request to EH&S using EHS Assistant.
   

Decontamination / Waste Disposal Procedure
Label waste

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  Attach a completed ASU Hazardous Waste tag to all waste containers as soon as the first drop of waste is added to the container.
  

Store waste

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  Store hazardous waste in closed containers, in secondary containment and in a designated storage location.
  
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  Double-bag dry waste using sealable transparent bags.
  
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  Waste must be under the control of the person generating and disposing of it.
  

Dispose of waste

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  Dispose of regularly generated chemical waste within 90 days.
  
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  Use EHS Assistant online hazardous waste pick-up request system.
  
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  Contact ASU EH&S at [phone] with questions.
  

Protocol / Procedure
Laboratory-specific procedures

Add your lab’s specific procedures in this section.

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IMPORTANT NOTE: Any deviation from this SOP requires advance PI approval.
Documentation of Training

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  Prior to conducting any work with this material, Principal Investigator or designee must provide to his/her laboratory personnel specific to the hazards involved in working with this substance, work area decontamination, and emergency procedures.
  
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  The Principal Investigator must provide his/her laboratory personnel with a copy of this SOP and a copy of the MSDS provided by the manufacturer.
  
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  The Principal Investigator must ensure that his/her laboratory personnel have attended appropriate/required laboratory safety training or refresher training within the last one year.
  

I have read and understand the content of this SOP.

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ASU Department of Environmental Health & Safety Page |

Updated December 2016