API MPMS Ch. 19.3, Part H is a focused API document for teams that need a technical reference on establishing evaporative loss factors for floating-roof tank devices. Based on the official title, it supports work related to storage tanks where evaporative losses and associated factors must be evaluated in a consistent way. For buyers, this makes it relevant to engineering, operations, inspection, and procurement teams that need a recognized basis for technical review, project specification, or internal alignment. The 2nd edition, published in 2022, provides a current reference for commercial and industrial use.

What is API MPMS Ch. 19.3, Part H?

API MPMS Ch. 19.3, Part H is a specification within the API MPMS series and serves as a technical reference for establishing evaporative loss factors for floating-roof tank devices. As a specification, it provides a requirements-based basis that organizations can use when evaluating or comparing approaches tied to this subject. The document is best understood as part of the measurement and storage-tank technical framework used in petroleum and related operations. API MPMS Ch. 19.3, Part H is therefore useful where consistency, traceability, and documented technical basis matter.

Where is API MPMS Ch. 19.3, Part H used?

API MPMS Ch. 19.3, Part H is commonly used in storage, terminal, refinery, and other oil and gas facility environments where floating-roof tanks are part of the asset base. It may support engineering review, operations planning, inspection work, and maintenance or integrity discussions involving tank equipment and evaporative-loss considerations. Procurement and project teams may also reference it when defining technical expectations for tank-related work. In practice, it helps align documentation and review processes across teams responsible for tank management and measurement-related decisions.

Why is API MPMS Ch. 19.3, Part H important?

API MPMS Ch. 19.3, Part H matters because it gives professionals a consistent technical basis for a subject that can affect storage-tank evaluation, planning, and reporting. For day-to-day work, that can improve clarity in engineering reviews, support QA/QC checks, and help reduce ambiguity when multiple teams are involved. It is especially useful when operations, inspection, and technical documentation groups need a shared reference for evaporative-loss-factor related work on floating-roof tank devices. That consistency can support better decision-making and more reliable internal processes.

• Specification for evaporative loss factors
• Floating-roof tank device focus
• Measurement and storage-tank reference
• Useful for engineering and inspection teams
• Supports procurement and project review
• API MPMS Ch. 19.3, Part H, 2nd edition, 2022