ADR ALUMINUM FUEL RIGID TANK

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ADR 2021
SUBJECT: JOPETROL RECOMMENDATION FOR CONVERSION OF BULK/TANKS FUELS ROAD TANKERS TO BOTTOM LOADING AND INSTALLATION OF VAPOUR RECOVERY / SYSTEM

ONE LEAFLET

Minimum Requirements for ADR Road Tank Vehicles
Draft Requirements
DOC. NUMBER GASCO- 03/ 2022
RELEASE DATE 21, JUL, 2022
RELEASE STATUS DRAFT - One fleet team


The purpose of this leaflet is to give instructions on the conversion of road tankers to BOTTOM LOADING and the installation of the VAPOUR RECOVERY SYSTEM (VRS) in compliance with the EC directive regarding the vapor recovery at installations, distribution and gas stations (STAGE 1 a & b, COM 93 – 422 FINAUSYN 425).
The specifications mentioned below are derived from IP standards (Edition May 1995), API standards, the EC directive.


A. PARTS AND EQUIPMENT NEEDED

The necessary parts and equipment needed for the conversion of road tankers to
BOTTOM LOADING & VAPOUR RECOVERY are:

1. Foot valves
2. Fuel couplings
3. Vapor coupling
4. Pressure/Vacuum valve (vents)
5. Manhole system
6. Overfill protection system
7. Vapor Recovery; overfill protection and earthing detection system.
8. Interlock system
9. Vapor recovery line piping
10. Dip stick assembly
11. Pneumatic system

B. DESCRIPTION AND POSITIONING OF THE EQUIPMENT

The general layouts of the installed equipment are identified by GASCO design.
The dimensions on the drawing derive from API standards. Actually for some of those dimensions, as described below, some deviations of the above standards are necessary. More specifically the specifications of the above equipment are:

1. Pneumatic 4-inch foot valves

The foot valves preferable to be pneumatic rather than mechanical, non-pressure balanced, 4 inches, according to API standards. With the installation of the foot valves all the components and pipe lines comprising the system between the couplings and the foot valves should be designed for an operating pressure of 500 kPa (75 psi) and will not allow any leak for pressure 1.5 times higher of the operating pressure. Any component that does not meet these requirements should not be used in a bottom loading road tanker.

The foot valves can be normal, low profile or extra low profile according to the needs of the conversion but should always meet the API standards.

2. Fuel Couplings

It is male 4 inch API standard as defined in the following publication:
API RECOMMENDED PRACTICE 1004
7th EDITION, NOV. 1988