# The Merchant Shipping (Cargo Ship Construction) Regulations 1997, Regulation 54C: Combustible gas indicators


All tankers shall be equipped with at least one portable instrument for measuring flammable vapour concentrations, together with a sufficient set of spares. Suitable means shall be provided for the calibration of such instruments.

---
Source: https://www.legislation.gov.uk/uksi/1997/1509/regulation/54C (the official version)
Page: https://openlegislation.uk/merchant-shipping-cargo-ship-construction-regulations-1997/regulation-54C
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.