Leaking volatile organic compounds, (VOCs) can cause breathing difficulties for people living or working near the source. Some VOCs, known as volatile hazardous air pollutants (VHAPs,) may even cause cancer or birth defects.
According to the EPA, valves are the largest source of leaks. They account for some 60% of the 70,000 tons of VOCs that escape each year. Next up are flanged connections, responsible for around 30% of “fugitive” emissions. Valves generally leak around the stem or gland. For flanged connections gaskets play an important role leak prevention.
Create a Formal Program
No business wants to be associated with problems like these. That’s why a leak detection and repair (LDAR) program is so important. LDAR is required under 25 different Federal standards, but even if a business doesn’t come under one or more of these, a program still provides benefits.
Leaks are lost product, and that’s wasted money. Leaks tend to get worse over time too, so early detection can prevent a larger problem in the future. Relying on informal, ad hoc inspections is no way to monitor equipment condition. Instead, use a LDAR program to formalize the process.
LDAR Basics
The EPA publication, “Leak Detection and Repair: A Best Practices Guide” explains how to run an effective program. The five key steps of this are:
- Identify components that need testing for leaks – valves and anything that uses a gasket to seal fluids.
- Define “leak” in terms of a ppm level. (The EPA suggests using a tighter level than required by applicable standards.)
- Implement a monitoring program – “Method 21” is a formal process documented in the EPA booklet referenced above.
- Repair leaks. The EPA recognizes that not all leaks can be fixed immediately but expects prompt action. Either keep gaskets on-hand or find a reliable supplier who can make-to-order and has short lead times.
- Keep records
Choose Quality
Replacing gaskets can be expensive, but neglecting them could cost more. Buy quality gaskets from an established supplier and install them with care. That way they’ll last longer and you’ll have fewer problems. Hennig Gasket & Seals has been in the business of manufacturing custom cut gaskets and seals for over 100 years. Contact us today.
