ADR packing instruction P301
Heading in ADR: “P301 PACKING INSTRUCTION”
UN 3165 aircraft hydraulic power unit fuel tanks: aluminium pressure receptacle with bladder, max 42 l fuel, in cushioned metal outer packaging.
Covers UN 3165. Two designs are allowed: (1) an aluminium pressure receptacle made from tubing with welded heads, with a welded aluminium bladder of up to 46 litres, design gauge pressure at least 1 275 kPa and burst at least 2 755 kPa; or (2) an aluminium pressure receptacle with a welded vapour-tight fuel compartment and elastomeric bladder of up to 46 litres, design gauge pressure at least 2 860 kPa and burst at least 5 170 kPa. In both cases each receptacle is leak checked in manufacture and before dispatch, packed in non-combustible cushioning such as vermiculite inside a strong, tightly closed metal outer packaging protecting all fittings, and the fuel per primary containment and package is limited to 42 litres.
| Value | Applies when |
|---|---|
| 46 l | maximum internal volume of the bladder |
| 42 l | maximum fuel per primary containment and package |
| 1275 kPa | minimum design gauge pressure, design (1) |
| 2755 kPa | minimum burst gauge pressure, design (1) |
| 2860 kPa | minimum design gauge pressure, design (2) |
| 5170 kPa | minimum burst gauge pressure, design (2) |
Refers to: 4.1.1.1; 4.1.1.2; 4.1.1.4; 4.1.1.5; 4.1.1.6; 4.1.3.
Carried by 1 Table A entry
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 4.1.4.1, P301, page 107.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.