Metal Plating and Finishing

Key Services for Metal Plating and Finishing Facilities

Risk Management Professionals has extensive experience providing services to plating and finishing facilities. Whether assisting facilities in achieving compliance with local, state, or federal regulations, RMP’s Engineers are well-suited to provide cost-effective and high quality services.

Many, if not all, plating and finishing facilities utilize large quantities of cyanides in conjunction with other regulated chemicals. The specific chemicals utilized vary on the facility’s objective and process; however, the following list provides some common examples of the regulated substances used in the plating and finishing industry:

  • Cadmium Oxide
  • Nitric Acid
  • Potassium Cyanide
  • Sodium Cyanide
  • Sulfuric Acid

Cyanides such as potassium cyanide and sodium cyanide are used as constituents in the plating baths. These cyanides facilitate anode corrosion and help to maintain constant levels of metal ions during the process. Strong acids such as nitric acid and sulfuric acid are used for the rinsing away and removal of metal residue after a plating bath. In addition, these acids can be a constituent of the plating baths, to maintain proper conditions, such as conductivity. Thus, the use of cyanides in the plating and finishing industry has become a focus area for governmental and non-governmental organizations. The table below displays the threshold quantities of the regulated substances mentioned earlier.

CalARP EPA RMP OSHA PSM
Cadmium Oxide 100 lbs N/A N/A
Nitric Acid 1,000 lbs[1] 15,000 lbs[2] 500 lbs[3]
Potassium Cyanide 100 lbs N/A N/A
Sodium Cyanide 100 lbs N/A N/A
Sulfuric Acid 1,000 lbs 10,000 lbs[4] 1,000 lbs[5]

[1] Nitric acid (conc 1% or greater)
[2] Nitric acid (conc 80% or greater)
[3] Nitric acid (94.5% by weight or greater)
[4] Sulfuric acid (fuming)
[5] Oleum (65% to 80% by weight; also called Fuming Sulfuric Acid)

Additionally, Risk Management Professionals offers services specifically for plating and finishing facilities that utilize regulated chemicals, such as: