API RP 1109-2017 PDF

Full title and description

API RP 1109 — Line Markers and Signage for Hazardous Liquid Pipelines and Facilities (API Recommended Practice 1109, 5th Edition, October 1, 2017). This RP provides recommended minimum requirements for the permanent marking (markers and signs) of hazardous liquid pipeline facilities, including design, message content, installation, placement, inspection and maintenance of markers on onshore pipelines and at inland waterway crossings.

Abstract

This recommended practice establishes guidance for pipeline operators and contractors on how and where to place permanent line markers and signage for hazardous liquid pipeline facilities to indicate presence, warn of hazards, and provide emergency contact/location information to the public and responders. It addresses marker and sign design, messages, mounting, placement, inspection intervals, maintenance, and examples/illustrations of typical installations. The RP is intended for new construction and normal marker maintenance programs after its effective date.

General information

• Status: Current (active listing as the 5th edition).
• Publication date: October 1, 2017 (published 1 October 2017).
• Publisher: American Petroleum Institute (API).
• ICS / categories: Petroleum and related technologies (ICS 75 — see sub‑groups for petroleum products / handling equipment).
• Edition / version: 5th Edition (Ed. 5, October 2017).
• Number of pages: 24 pages.

Scope

API RP 1109 covers minimum recommended requirements for markers and signs used at hazardous liquid pipeline facilities to identify the presence of buried or above‑ground pipeline elements, warn of associated hazards, and provide information (such as operator identity and emergency contact) for reporting incidents or locating buried pipelines. The document addresses marker and sign design, messages, installation practices, placement intervals and locations (including crossings and rights‑of‑way), inspection and maintenance procedures, and example marker layouts; it is intended for new construction and routine marker maintenance following the RP’s effective date.

Key topics and requirements

• Requirements and recommendations for marker and sign content (operator name, emergency phone number, “Pipel ine”/commodity identification where appropriate, and warning language).
• Design characteristics: size, color contrast, durable materials, legibility, and mounting/height considerations to remain visible and resistant to environmental degradation.
• Placement and spacing guidance for onshore routes, property boundaries, road crossings and inland waterway crossings, including examples/figures illustrating typical locations.
• Inspection and maintenance intervals and procedures to ensure markers remain visible and accurate (replacement of damaged/faded markers, recordkeeping).
• Integration with operator damage‑prevention and public awareness programs; coordination with applicable regulations (for example, references to 49 CFR Part 195 where relevant for hazardous liquid pipelines).
• Guidance on alternative markers for special conditions and the operator’s responsibility to consider consequences of pipeline failure, commodity hazard, and proximity to populated or environmentally sensitive areas when determining marker extent.

Typical use and users

Primary users are hazardous liquid pipeline operators and owner‑operators, pipeline route planners, construction and maintenance contractors, right‑of‑way managers, emergency planners, public awareness coordinators, and regulatory compliance staff. Municipalities, landowners, and emergency responders also use the RP as a reference for understanding marker expectations and reporting contacts. Consultants and designers use it to specify marker installations for new pipeline projects and to develop marker maintenance programs.

Related standards

Commonly referenced or complementary documents include API RPs addressing pipeline integrity and public awareness (for example API RP 1162 on public awareness programs), API RP 1102 (steel pipelines crossing railroads and highways) and relevant regulatory material such as 49 CFR Part 195. Other pipeline design and safety codes (for example ASME B31 series) may be used alongside API RP 1109 when planning and siting markers.

Keywords

pipeline markers, line markers, signage, hazardous liquid pipeline, pipeline facilities, marker design, marker placement, public awareness, emergency contact, marker inspection, pipeline safety.

FAQ

Q: What is this standard?

A: API RP 1109 is an American Petroleum Institute Recommended Practice that provides guidance and minimum recommendations for permanent line markers and signage used to identify and warn about hazardous liquid pipeline facilities.

Q: What does it cover?

A: It covers marker and sign message content, design and materials, mounting and placement (onshore and at inland waterway crossings), inspection and maintenance practices, and examples of typical installations. It is focused on marking to support safety, damage prevention, and emergency reporting.

Q: Who typically uses it?

A: Pipeline operators, construction and maintenance contractors, environmental and safety managers, consultants, public awareness coordinators, emergency responders, and regulators reviewing pipeline marking and public‑reporting information use this RP.

Q: Is it current or superseded?

A: The 5th Edition (published October 1, 2017) is the current listed edition and it supersedes the prior 2010 edition (API RP 1109:2010). Users should confirm whether any addenda or errata have been issued by API since publication.

Q: Is it part of a series?

A: API RP 1109 is part of API’s body of pipeline recommended practices and standards; it is commonly used together with other API RPs and API/industry standards covering pipeline crossing design, public awareness (e.g., API RP 1162), integrity management, and applicable regulatory requirements.

Q: What are the key keywords?

A: Key keywords are: line markers, pipeline signage, hazardous liquid pipelines, marker inspection, marker placement, operator contact, public awareness, damage prevention.