Slip testing
in Portsmouth.

Why Portsmouth needs real PTV data.

Maritime operations around Portsmouth require walking surfaces that perform under continual wet and oil contamination. Gangways, quayside access, engine rooms and cargo-handling areas all need traceable, independent PTV records.

Marine operators in Portsmouth know that standard slip tests are designed for dry terrestrial environments. Pendulum testing, with appropriate slider selection, is the only method that survives audit in a working port.

Pendulum testing. Not opinion.

The pendulum method — defined in BS 7976 and BS EN 16165, and referenced throughout HSE guidance — is the only test HSE considers reliable on wet or contaminated floors. A rubber slider swings from a fixed height and drags across the test surface; energy lost to friction is recorded as a Pendulum Test Value (PTV) on a scale of 0 to 150.

HSE classifies any PTV below 25 as a high slip potential. 25–35 is moderate. A PTV of 36 or above, measured wet and dry with the correct reference slider, is the benchmark for a floor considered safe under normal use. Every report we produce in Portsmouth is issued under our UKAS ISO/IEC 17025 accreditation — the method, the technician and the equipment are all independently audited.