It would help to know which jurisdiction you’re in. But even without this information, I can say as a general matter that ammonia is deemed a hazardous chemical for which a number of safety measures are required. At a minimum, you’ll need to:
- Measure and assess the levels to which your workers are exposed
- Take measures to keep exposure levels at or below the particular OEL (occupational exposure limit) for ammonia in your jurisdiction
- The first required measure: Substitution of less toxic materials if reasonably practicable
- If substitution isn’t reasonably practicable and ammonia use and exposure can’t be avoided via implementation of engineering controls, e.g., ventilation, exhaust filters, etc.
- Work controls to minimize exposure, e.g., frequent breaks, safe work procedures, evacuation measures, etc.
- PPE, including respiratory protection–which generally should be used as a last resort and/or as a supplement to engineering/work controls rather than as primary means of protection
Products containing ammonia would also likely be deemed “hazardous products” for which WHMIS protections are required, including:
A. Safety training and instruction for exposed workers
B. Maintaining an up to date, proper MSDS that complies with 1998 WHMIS requirements OR an SDS complying with new GHS requirements. After Dec. 1, 2018, the MSDS will no longer be valid and only an SDS will do
C. Ensuring that a proper WHMIS workplace label is attached to the container. Between now and Dec. 1, the WHMIS label can meet EITHER the old WHMIS OR new GHS rules. After that, though, the label must meet GHS and only GHS requirements
Last but not least, make sure you review all of these safety measures at least once a year and more often as necessitated by changes in work conditions, incidents or other indications that your current measures may not be suitable to current hazards.
That’s about it in a nutshell. Hope this helps.
**This is an answer from a previously asked question on Ammonia use.**
