API RP 1004-2003 (2011) PDF

Full title and description

API RP 1004-2003 (R2011) — Bottom Loading and Vapor Recovery for MC-306 & DOT-406 Tank Motor Vehicles. This Recommended Practice defines required and recommended features for bottom-loading adapters, tank-vehicle equipment and secondary shutoff control systems used at petroleum terminals to enable safe, compatible bottom loading and vapor recovery operations between carriers and terminal operators.

Abstract

This RP provides guidance to manufacturers, carriers and terminal operators on the configuration and operation of 4‑in (101.6 mm) bottom‑loading adapters, vehicle loading/vapor‑recovery equipment, secondary shutoff control systems, and loading installations to ensure interchangeability and reduce product loss and vapor emissions during bottom loading of MC‑306 and DOT‑406 tank motor vehicles. The document consolidates required features (for interchangeability) and recommended features (for improved performance).

General information

• Status: Recommended Practice originally published 2003; listed and distributed as API RP 1004-2003 with a 2011 confirmation/reissue notation (R2011) in distributor catalogs. Users should verify current status with API for any later revisions or withdrawals.
• Publication date: Original edition dated January 2003 (8th edition). Reissue/confirmation entries appear with a 2011 (R2011) notation in some catalogs.
• Publisher: American Petroleum Institute (API).
• ICS / categories: Petroleum and related technologies — examples of ICS classifications shown with this RP include 75.080 (petroleum products), 75.180 (equipment for petroleum and natural gas industries) and related petroleum handling equipment codes.
• Edition / version: 8th edition (document commonly cited as API RP 1004, 2003; catalog listings show an R2011 confirmation entry).
• Number of pages: Common publisher listings show 21 pages for the 2003 publication; some distributor/reissue records list 32 pages for the R2011 entry (cover/format differences possible).

Scope

Specifies required and recommended features for bottom loading and vapor recovery systems used with MC‑306 and DOT‑406 tank motor vehicles, including the geometry and operation of 4‑in. adapters, vehicle equipment requirements for bottom loading and vapor recovery, design and performance of secondary shutoff control systems, and requirements for loading installations to achieve interchangeability at multi‑supplier terminals. It addresses both mechanical and pneumatic/electronic control considerations needed to prevent overfill and reduce fugitive emissions.

Key topics and requirements

• Definition and dimensional envelope for 4‑inch (101.6 mm) bottom‑loading adapters and couplers.
• Required features for tank vehicles equipped for bottom loading and vapor recovery (interchangeability criteria).
• Secondary shutoff (independent) control systems and required outage limits to allow secondary control operation.
• Design and operational guidance for terminal loading installations and associated piping/valving to support safe bottom loading and vapor recovery.
• Recommendations for minimizing liquid loss and vapor emissions during connection/disconnection and loading operations.

These topics are presented as required (mandatory for interchangeability) and recommended (best practice) items to balance safety, environmental control and operational flexibility.

Typical use and users

Primary users are terminal designers and operators, tank‑vehicle manufacturers and retrofitters, loading‑arm and coupler manufacturers, safety and environmental engineers, and regulatory/compliance personnel overseeing bulk fuel handling. The RP is used when specifying vehicle fittings and terminal loading equipment to ensure cross‑vendor compatibility and to reduce product loss and emissions at multi‑carrier facilities.

Related standards

Commonly referenced alongside other API and industry documents covering terminal design, measurement and safety. Related guidance often cited with API RP 1004 includes API 2610 (terminal & tank facilities operation), API 2000 (venting of storage tanks) and various API equipment and measurement RPs. National and industry terminal design documents also reference API RP 1004 for truck‑loading configurations.

Keywords

bottom loading, vapor recovery, MC‑306, DOT‑406, 4‑inch adapter, API coupler, secondary shutoff, tank motor vehicle, terminal loading, interchangeability, overfill protection.

FAQ

Q: What is this standard?

A: API RP 1004 is an American Petroleum Institute Recommended Practice that sets out required and recommended features for bottom loading and vapor recovery systems used with MC‑306 and DOT‑406 tank motor vehicles to ensure safe, compatible loading at multi‑supplier terminals.

Q: What does it cover?

A: It covers the configuration and operation of 4‑in. bottom‑loading adapters and couplers, vehicle equipment for bottom loading and vapor recovery, independent secondary shutoff control systems, and loading‑installation requirements to achieve interchangeability and reduce product loss and vapor emissions.

Q: Who typically uses it?

A: Terminal operators, tank‑vehicle manufacturers and fleet operators, equipment suppliers (adapters, couplers, loading arms), safety/environmental engineers and regulators involved in bulk petroleum loading/unloading operations.

Q: Is it current or superseded?

A: The document is commonly cited as API RP 1004, 2003 (8th edition) with distributor listings showing an R2011 confirmation/reissue entry (API RP 1004-2003 (R2011)). For the authoritative current status or any subsequent revisions or withdrawals, check the American Petroleum Institute directly.

Q: Is it part of a series?

A: API RP 1004 is one of many API recommended practices addressing terminal and equipment design, measurement and operational safety; it is often used alongside other API standards and RPs covering terminal operations, venting, metering and tank design.

Q: What are the key keywords?

A: Bottom loading; vapor recovery; 4‑inch adapter; MC‑306; DOT‑406; secondary shutoff; coupler; terminal loading; interchangeability; overfill protection.