Hazardous Pipe, Tank and Vessel Labelling Requirements in the UAE

Short answer

In Abu Dhabi, ADOSH-SF CoP 17.0 §3.8 (ADOSH-SF is formerly OSHAD-SF, administered by ADPHC) requires vessels, tanks and visible pipes that contain dangerous substances or are under pressure to carry signs or labels, in line with the Abu Dhabi Building Codes. §3.4 requires signs to be in Arabic and English, durable and permanent. Dubai Municipality guidance DM-HSD-GU99-SSW2 adds where labels go (sampling and filling points, drain valves, flanges, intermediate points on long runs) and, in Annex D, sets minimum text heights by viewing distance. Pipeline route markers and in-plant pipe data on operating facilities are governed by operator and project specifications, which are not public.

What the code requires

For plant and process pipework, there are pipe, tank and vessel labels for plant and oil & gas sites printed to a project drawing. For the wider signage set on the same site, see our guide to construction safety sign requirements.

Who is responsible

The clauses above state the duty in general terms (vessels and pipes "shall carry" signs) and do not name who produces the labels. Refer to the project's permit conditions, the contract and the operator specification to establish who prepares the labels and who clears the wording before production. What counts as compliant is decided by the clause text and the licensing authority's comments, not by a product list.

What an inspection against these clauses looks at

• Whether each visible vessel, tank and pipe carrying a dangerous or pressurised substance has a sign or label (§3.8).
• Whether the text is in Arabic and English (§3.4).
• Whether the label is fixed, intact and legible, or peeling and worn (§3.4).
• Whether labels appear at sampling and filling points, drains, flanges and along long runs (Dubai guidance).
• Whether text height suits the real viewing distance (Annex D in Dubai).
• Whether the marking matches the project or operator specification where one applies.

Typical gaps against the requirement

These are gaps that follow from the clause wording, not a statement of how often they occur:

• A single-language label where §3.4 requires both languages.
• Long runs with no intermediate labels, so the contents of a pipe cannot be identified midway.
• No marking at flanges, drain valves or sampling points.
• Text smaller than suits the viewing distance.
• Adhesives that do not withstand the site's heat, moisture or dust, so labels fall off in service.
• Colours or symbols taken from a general source and treated as a requirement when the project specifies others.

Checklist

• ☐ Every visible vessel, tank and pipe holding dangerous or pressurised substances is identified.
• ☐ I hold the operator specification or project drawing for label content and colours, or have recorded that none exists.
• ☐ Arabic and English text on every label.
• ☐ Label material and fixing suit the site's heat and environment.
• ☐ Labels placed at sampling and filling points, drain valves and flanges.
• ☐ Intermediate labels added along long runs.
• ☐ Text height suits the real viewing distance (Annex D for Dubai sites).
• ☐ Wording cleared by the operator before printing where required.
• ☐ A schedule of label locations is kept in the project file.
• ☐ Label condition is rechecked periodically and damaged labels replaced.

FAQ

Does ADOSH-SF set colours for plant pipework?

§3.8 requires signs or labels but does not give a colour table for pipe contents. Colours and symbols are normally set in the project or operator specification.

Are there public mandatory dimensions for pipeline route markers?

None in the public documents we relied on. Operator drawings and project specifications decide size and material, and they are not published.

Does Annex D on text height apply outside Dubai?

It belongs to Dubai Municipality guidance and applies in Dubai. In Abu Dhabi, §3.4 and §3.8 as reviewed contain no equivalent figure, so Annex D is a useful reference only unless the project specification requires otherwise.

Does ADPHC approve particular signs or labels?

No. ADPHC administers the framework and issues its codes of practice; it does not approve products or signs. Compliance is measured against the clause text and the permit conditions.

Can this page replace the operator's specification?

No. It is an independent reference to the general requirements. Where they differ, follow the project specification and the licensing authority.