cyanide training proper care and handling of sodium carbon nitrogen compounds n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
CYANIDE TRAINING Proper care and handling of sodium-carbon-nitrogen compounds PowerPoint Presentation
Download Presentation
CYANIDE TRAINING Proper care and handling of sodium-carbon-nitrogen compounds

Loading in 2 Seconds...

play fullscreen
1 / 17

CYANIDE TRAINING Proper care and handling of sodium-carbon-nitrogen compounds - PowerPoint PPT Presentation


  • 842 Views
  • Uploaded on

CYANIDE TRAINING Proper care and handling of sodium-carbon-nitrogen compounds. XXXX Gold Mining Company . CYANIDE TRAINING. • MSHA Safety & Health Training. To comply with the International Cyanide Management Code. Why the need for this Training?. • To Comply with the XXXX Cyanide Policy.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'CYANIDE TRAINING Proper care and handling of sodium-carbon-nitrogen compounds' - Patman


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
cyanide training proper care and handling of sodium carbon nitrogen compounds

CYANIDE TRAININGProper care and handling of sodium-carbon-nitrogen compounds

XXXX Gold Mining Company

cyanide training
CYANIDE TRAINING
  • • MSHA Safety & Health Training.
  • To comply with the International Cyanide Management Code.

Why the need for this Training?

• To Comply with the XXXX Cyanide Policy

what is cyanide
What is Cyanide?

• Chemical Name :

Sodium Cyanide

  • • Chemical Symbol:

NaCN

• “Better” Chemical Name:

Sodium Carbon Nitrogen

cyanide safety
CYANIDE SAFETY

USES

  • The use of cyanide for the extraction of gold is only one of the many industrial uses of cyanide, accounting for less than 20% of worldwide hydrogen cyanide production. The remaining 80% is used in a variety of processes including the production of plastics (such as acrylics and nylon) and pharmaceuticals (ibuprofen and naproxen), processing of food (decaffeination of coffee and as an anti-caking additive in table salt), and for electroplating and hardening of steel.
process description

1. NaCN & NaOH (sodium hydroxide) are added to Barren Solution in ADR Plant.

Process Description

2. Barren Solution is pumped to the Leach Pad.

3. Barren Solution Extracts Gold from Leach Pad Becoming Pregnant Solution.

LEACH

PAD

Preg Solution

Barren Solution

4. Preg Solution is Collected from Leach Pad and Pumped Back to ADR Plant were the Gold is Removed, with other metals.

PREG

PUMPS

ADR

PLANT

cyanide safety1
Cyanide Safety
  • Potential Areas for Exposure
  • Fast Acting Poison
  • Routes of Entry
  • HCN Exposure Limits
  • Symptoms of Cyanide Poisoning
  • First Aid Procedures
cyanide safety2

ADR Plant

Cyanide Safety

Lab

Leach Pad

Potential Areas for Exposure

cyanide safety3

What is required?

– Full PPE to Mix NaCN or perform maintenance work in NaCN storage areas.

CyanideSafety

Personal Protective Equipment

– Safety Glasses In All Areas.

- No Acids Near

Cyanide.

cyanide safety4
Cyanide Safety
  • Fast Acting Poison - if Exposure is to high levels - usually as HCN
    • Cyanide Prevents Cellular Respiration. Mainly in the Brain & Heart!
    • HCN Gas, Cyanide Dust or Solution are all Dangerous.
    • Cyanide poisoning is recoverable if treatment is administered quickly. Normally in 3-4 minutes! Therefore, responders must work quickly!
cyanide safety5
CyanideSafety
  • Routes of Entry

– Skin

– Eyes

– Ingestion

– Inhalation

NO EATING, DRINKING, OR SMOKING AROUND CYANIDE WORKING AREAS!!

cyanide safety6

• pH = >10.0

CyanideSafety

• NaCN Concentration = 0.200 lb/ton

• Lethal Ingested Dosages at this Concentration*:

– 150 pound person = 2.5 gallons

– 200 pound person = 3.5 gallons

– 250 pound person = 4.5 gallons

Barren Solution Characteristics

* Numbers are based off of LD50 of 15 mg/kg in Rats.

cyanide safety7

CyanideSafety

• The Higher the pH of the Solution the Less HCN Produced.

HCN Production

• DO NOT Mix Acid and Cyanide!!!

cyanide safety8
CyanideSafety
  • HCN Exposure
    • Current Limits
      • 10 ppm on an 8 hour TWA
      • 5 ppm on a 12 hour TWA
    • New Guidance for PPE
      • 4.7 ppm Maximum*

* Recommended by the ACGIH (American Conference of Governmental Industrial Hygienists) but not yet approved. Suggested in International Code.

cyanide safety9
CyanideSafety
  • HCN Exposure
    • Effects
      • 2-5 ppm Odor threshold
      • 4.7 ppm Maximum Exposure
      • 20-40 ppm Slight symptoms after several hours
      • 45-54 ppm Tolerated for ½ to 1 hour without significant immediate or delayed effects
      • 100-200 ppm Fatal within ½ to 1 hour
      • 300 ppm Rapidly fatal (if no treatment)
cyanide safety10
CyanideSafety
  • Delayed Symptoms
    • Irritation of the throat
    • Salivation
    • Giddiness
    • Weakness of the arms and legs
    • Difficulty breathing
    • Palpitations
    • Numbness
    • Convulsions
    • Collapse
  • Early Symptoms
    • Reddening of the eyes/skin
    • Nausea
    • Headache

Symptoms of Cyanide Poisoning

cyanide safety11
CyanideSafety

– Sound Alarm.Protect Self with PPE. Remove victim from contamination, also remove contaminated clothing from the victim. Be careful of cross contamination!

First Aid Procedures

– If no symptoms are evident:

  • • No treatment is necessary. Just watch for symptoms to develop.

– If Conscious but symptoms are evident:

  • • Give Oxygen.

– If Consciousness is impaired or the victim is unconscious:

  • • Give Oxygen and Amyl Nitrite

– If not breathing:

  • • Give Oxygen and Amyl Nitrite immediately by means of a positive pressure respirator (artificial respiration).
cyanide safety12
CyanideSafety

Ingestion

First Aid Procedures

– Remove victim from contamination.

Be careful of cross contamination!

– If Conscious:

• Give Activated Charcoal.

– If Consciousness is impaired or the victim is unconscious:

• DO NOT give Activated Charcoal!!