Track Your Crew's HAVS Exposure.
Prove Compliance at Inspection.

UK small contractors lose enforcement cases because they can't produce daily vibration exposure records. HAVS·Log replaces paper logs with automatic threshold alerts and audit-ready reports.

Launching summer 2026. Early access opening to waitlist members first.

Daily Exposure DashboardLive

J. Carter

68%of EAV

M. Singh

89%of EAV

Caution

R. Evans

42%of EAV

3 workers tracked todayLast update: 14:23

Paper HAVS Logs Are Failing Small Contractors

The Control of Vibration at Work Regulations 2005 require daily exposure records — but the tools available to small firms aren't fit for purpose.

Paper logs go missing

Log sheets get lost on site, damaged in vans, or never filled in. When HSE asks for records, they don't exist.

Spreadsheets stay empty

Excel trackers are set up with good intentions but rarely updated from the field. They're a desktop tool for an on-site job.

H&S platforms cost too much

Enterprise platforms with vibration modules start at £100+/month — overkill for a 10-person crew that needs one thing: daily HAVS logging.

Thresholds get missed

Without automatic calculation, supervisors guess whether workers are near the EAV (2.5 m/s²) or ELV (5 m/s²). One mistake means an enforcement notice.

Daily Compliance in Under a Minute Per Worker

Four steps from first login to HSE-ready compliance reports — no hardware, no training, no spreadsheets.

Add your tools

Enter your vibrating tools with manufacturer vibration magnitudes (m/s²). Pre-loaded data for common tools saves time.

Log daily usage

Record which workers used which tools and for how long. Takes under a minute per worker.

Get instant alerts

HAVS·Log calculates A(8) exposure automatically and alerts you when workers approach EAV or ELV thresholds.

Export compliance reports

Generate audit-ready reports showing daily exposure records, threshold actions, and health surveillance triggers — ready for HSE inspection.

Ready to stop guessing HAVS exposure?

Join the waitlist for early access and launch-day pricing.

Join the Waitlist

Free HAVS Compliance Tools

Online HAVS calculator, trigger time charts, and log sheet templates — free to use, no signup required.

HAVS Exposure Calculator

Calculate daily A(8) exposure for multiple tools. Check EAV and ELV thresholds instantly.

Trigger Time Chart

Quick-reference chart showing how long common tools can be used before reaching EAV and ELV.

HAVS Log Sheet Template

Downloadable daily exposure log sheet — ready to print or use in Excel. UK-regulation compliant.

View all free tools →

Stay Compliant — Without Enterprise Hardware or Budgets

The gap between free calculators and enterprise hardware leaves small firms exposed. HAVS·Log is planned from around £15/month per crew — not £100+/month enterprise platforms.

Swap workers before they breach

At 2pm when the grinder's been running all morning, you'll see J. Carter is at 78% of EAV. Swap him to marking-out before he breaches — no guesswork.

Get alerts, not enforcement notices

Automatic warnings at 80% and 100% of EAV. You find out from your phone, not from an HSE inspector.

Pull audit reports in seconds, not hours

HSE asks for six months of daily exposure logs. One click, complete report — not a van full of crumpled paper.

Priced for a 10-person crew, not a 500-person enterprise

No wrist sensors to buy, no enterprise contracts. Software-only tracking that costs less than a box of log sheets per month.

Frequently Asked Questions About HAVS Compliance

What are the HAVS exposure limits for hand-arm vibration?

Under the Control of Vibration at Work Regulations 2005, the daily Exposure Action Value (EAV) is 2.5 m/s² A(8) and the Exposure Limit Value (ELV) is 5 m/s² A(8). Employers must assess vibration exposure, introduce controls at the EAV, and ensure workers never exceed the ELV. These values apply to an 8-hour reference period.

How do I calculate hand-arm vibration exposure?

The daily exposure A(8) is calculated using the formula: A(8) = vibration magnitude × √(exposure time ÷ 8 hours). For multiple tools, you calculate partial exposures for each and combine them. Each tool has a declared vibration magnitude (m/s²) from the manufacturer, and you multiply by the square root of the usage fraction of an 8-hour day.

What records do I need to keep for HAVS compliance?

UK employers must keep records of vibration risk assessments, daily exposure calculations per worker, health surveillance results, and any actions taken when thresholds are reached (tool rotation, reduced exposure time, referral for health surveillance). HSE can request these during inspections. Records should be retained for at least 40 years for health surveillance data.

How long can workers use vibrating tools each day?

It depends on the tool's vibration magnitude. A tool rated at 5 m/s² reaches the EAV (2.5 m/s²) after about 2 hours and the ELV (5 m/s²) after about 8 hours. A tool rated at 15 m/s² hits the EAV in roughly 13 minutes and the ELV in under an hour. Use a HAVS calculator to work out trigger times for your specific tools.

What happens if you exceed the HAVS exposure limit value?

Exceeding the ELV (5 m/s² A(8)) is a breach of the Control of Vibration at Work Regulations 2005. Employers must take immediate action to reduce exposure below the limit. HSE enforcement can result in improvement notices, prohibition notices, and prosecution — fines are unlimited for health and safety offences in the Crown Court.

Do I need a HAVS risk assessment for my construction site?

Yes, if your workers use vibrating tools. The Control of Vibration at Work Regulations 2005 require all UK employers to assess vibration exposure risks. This applies to construction, civils, landscaping, highways maintenance, and any sector where powered hand tools are used regularly. The assessment must be reviewed when circumstances change.

Is HAVS·Log free to use?

HAVS·Log will offer a free HAVS exposure calculator with no signup required — calculate exposure for multiple tools and check against EAV/ELV thresholds instantly. The paid plan (for crew tracking, worker history, threshold alerts, and compliance reports) will be priced for small contractors, not enterprise budgets. Join the waitlist for early-bird pricing.

Who is behind HAVS·Log?

HAVS·Log is built by Crocker Digital Ltd (Company No. 17008789), a UK software company focused on practical compliance tools for small businesses. Contact us at hello@crockerdigital.co.uk.

Is my data secure with HAVS·Log?

We collect only your email address for the waitlist — no tracking cookies, no third-party data sharing. Analytics use GoatCounter, which is privacy-focused and collects no personal data. When the full product launches, all data will be stored on UK/EU infrastructure with GDPR-compliant practices.

Replace Paper HAVS Logs With Automatic Compliance

Join the waitlist and be first to try HAVS·Log when it launches. Waitlist members get early-bird pricing.

Built by a UK team that's worked in construction compliance — Crocker Digital Ltd (Company No. 17008789).

Built by Crocker Digital Ltd — UK Company No. 17008789

Track Your Crew's HAVS Exposure. Prove Compliance at Inspection.