USED FOR:
Petroleum and natural gas industries
Design and construction of process piping in refineries, gas plants, LNG facilities, chemical plants, and petrochemical complexes.
RELATED STANDARDS:
- ASME B31.3 – Process Piping
- EN 13480 – Metallic industrial piping
- ISO 13623 – Pipeline transportation systems
- ASME B16.5 / B16.47, ASTM material standards, etc.
DIMENSIONAL RANGE:
ISO 15649 doesn’t set its own dimensional scope. Since it operates as a normative wrapper around ASME B31.3, sizing is governed by whatever component standards B31.3 itself calls up, mainly the ASME B16 series for flanges and fittings. In practice this means no fixed upper or lower diameter limit at the code level: sizing is dictated by the pressure/temperature rating and the referenced product standard, not by ISO 15649 as such.
DESCRIPTION:
This is essentially the ISO “cover” of ASME B31.3.
it doesn’t reinvent process piping design, it explicitly incorporates ASME B31.3 as its normative basis and adds a handful of ISO-specific clauses (buried piping, some clearance and layout provisions). If you already know B31.3, you already know 90% of ISO 15649. It’s the document to reach for when a client contract says “ISO piping code” but the design philosophy is without any doubt American
IMPORTANT NOTES:
It excludes transportation pipelines (that’s ISO 13623’s territory) and is currently under review at ISO
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