AS ISO 19901.5-2022 PDF

Full title and description

AS ISO 19901.5:2022 — Petroleum and natural gas industries — Specific requirements for offshore structures — Part 5: Weight management. This Australian adoption identically adopts ISO 19901‑5:2021 and establishes requirements and guidance for managing and controlling weights and centres of gravity (CoG) of offshore facilities through all lifecycle phases (concept, FEED, detail design, construction, installation, operation and decommissioning).

Abstract

This standard specifies: requirements for mass management to determine and control weights and CoG of tagged equipment, assemblies, modules and whole facilities; requirements for weight and CoG interfaces; standardized terminology for estimating and reporting weight and CoG; procedures for determining not‑to‑exceed (NTE) and budget weights; and requirements for weighing, verification and weight reporting to support costing, scheduling, installation strategy and structural integrity management (SIM). Snow and ice are excluded; dynamic loads are addressed in related ISO documents.

General information

• Status: Published / current (Australian adoption of the ISO document).
• Publication date: AS edition published 13 May 2022 (AS ISO 19901.5:2022); original ISO edition published 16 November 2021 (ISO 19901‑5:2021).
• Publisher: Standards Australia (national adoption) — identical adoption of ISO (International Organization for Standardization).
• ICS / categories: 75.180.10 (Offshore structures / petroleum and natural gas industries).
• Edition / version: AS edition 1 (2022) — identical to ISO edition 3 (ISO 19901‑5:2021).
• Number of pages: AS publication: 66 pages (PDF listing); ISO publication: 65 pages.

Scope

The standard applies to weight management of fixed and floating offshore facilities (newbuild and modifications) and covers static mass items only. It provides requirements and guidance to implement systematic weight control during conceptual design, FEED, detailed design, construction, installation and operations, and to support structural integrity management and decommissioning activities. It does not treat snow/ice as facility mass; dynamic loads are handled by related ISO parts.

Key topics and requirements

• Mass management across project lifecycle phases (concept → FEED → detail → construction → operations → decommissioning).
• Definitions and use of control weights (budget weights, not‑to‑exceed (NTE) weights, reserves) and associated acceptance criteria.
• Standardized terminology and reporting formats for weight and CoG estimates, weighing certificates and verification.
• Weighing procedures and uncertainty treatment for tagged equipment, assemblies, modules and whole‑facility weighing.
• Weight database structure, legacy data management and procedures for updating weight records during design, construction and operation.
• Interface management between disciplines/modules to protect stability, transport & installation (T&I) limits and structural integrity.

Typical use and users

Used by offshore project teams: structural, marine and mechanical engineers; FEED and detailed design teams; project and construction managers; fabrication yards and module suppliers (for weigh‑ins and certificates); transport & installation planners; asset operators and integrity teams maintaining weight databases for operations, modifications and decommissioning; and clients/regulators referencing weight management in contracts and specifications.

Related standards

Commonly referenced sister documents include other parts of ISO 19901 (seismic and load‑related parts), ISO 19904‑1 and ISO 19901‑6/‑7 for dynamic loads and marine operations, and ISO 19901‑8/‑10 for marine soil and geophysical investigations where those inputs affect weight and installation planning. Use the document as part of an integrated site‑characterization and SIM (structural integrity management) toolset.

Keywords

weight management; mass management; centre of gravity (CoG); not‑to‑exceed (NTE) weight; weight database; weighing certificates; offshore structures; FEED; transport & installation (T&I); structural integrity management (SIM).

FAQ

Q: What is this standard?

A: It is AS ISO 19901.5:2022 — the Australian adoption of ISO 19901‑5:2021 specifying requirements for weight and centre‑of‑gravity management for offshore petroleum and natural‑gas facilities.

Q: What does it cover?

A: It covers requirements and guidance for estimating, documenting, verifying and controlling static weights and CoG of tagged equipment, assemblies, modules and entire facilities through all lifecycle phases; it also sets rules for control weights (budget, NTE), weighing procedures and weight databases. Snow/ice and dynamic loads are excluded.

Q: Who typically uses it?

A: Offshore engineers, project managers, yards and suppliers (for weigh‑ins and certificates), transport & installation planners, asset integrity teams and clients/regulators using it as a contract reference or to support structural analysis and installation planning.

Q: Is it current or superseded?

A: The ISO version (ISO 19901‑5:2021) published 16 Nov 2021 replaced the 2016 edition; the Australian identical adoption (AS ISO 19901.5:2022) was published 13 May 2022 and is listed as the current national adoption. Users should check national collections for any subsequent amendments or corrigenda.

Q: Is it part of a series?

A: Yes — it is Part 5 of the ISO 19901 series (specific requirements for offshore structures) and is intended to be used alongside other parts addressing seismic design, marine operations, dynamic loading and geotechnical/geophysical investigations.

Q: What are the key keywords?

A: Weight management, centre of gravity, mass management, NTE weight, weight database, weighing certificate, offshore, FEED, T&I, SIM.