Blog author
QEHS safety desk
Safety practitioners on staff
Practising QEHS professionals who write how-to guides, regulatory breakdowns, and field-tested program playbooks.
Posts by QEHS safety desk
- Threshold Limit Value (TLV) Explained: TWA, STEL, and Ceiling Limits
TLV, TWA, STEL — industrial hygiene has a vocabulary problem. This guide unpacks each limit type, how they are measured, and how to apply them in your exposure monitoring program.
2026-06-17 · 12 min read
- What Is TRIR? How to Calculate Your Total Recordable Incident Rate
TRIR is the most-cited safety metric in the world — and the most misunderstood. Learn the formula, what counts as recordable, and how to use TRIR alongside leading indicators.
2026-06-17 · 12 min read
- OSHA 300/300A/301 in QEHS: the fastest path to a clean log
The recordkeeping logs look simple. The rules are not. Here is how the Incidents module maps OSHA case classification, the 6-month posting window, and the e-filing cutoffs without a spreadsheet in sight.
2026-03-24 · 12 min read
- Contractor management without the PDF
Insurance certs, site inductions, JSA sign-offs, permit eligibility — four separate PDF trails most programs maintain by hand. Here is the pattern that merges them into one record per contractor company.
2026-03-10 · 12 min read
- ISO 45001 audit prep: the 7 evidence gaps most programs share
We walk through the seven gaps the external auditor will find if you do not fix them first. Every gap has a Composer template that closes it.
2026-03-03 · 12 min read