← All standards & equipment
Storage Tanks

Field-Welded Production Tank — API 12D

Larger field-welded upstream production storage tank.

Category
Storage Tanks
Subcategory
Production
Applicable standards
3
Issuing bodies
1

Description

Larger field-welded upstream production storage tank.

Applicable Standards (3)

API — 3 standards

API 12D Field-Welded Tanks for Storage of Production Liquids
Edition: 12th Edition (2017, R2022) Region: USA, Global
Larger field-welded production tanks (typically 500–10,000 bbl).
API 12P Specification for Fiberglass Reinforced Plastic Tanks
Edition: 3rd Edition (2008, R2021) Region: USA, Global
FRP/GRP tanks for upstream and downstream production service.
API 2000 / ISO 28300 Venting Atmospheric and Low-Pressure Storage Tanks
Edition: 7th Edition (2020) Region: USA, Global
Normal and emergency venting requirements for atmospheric and low-pressure tanks.
Key requirements (7)
  • Venting requirements for atmospheric & low-pressure tanks (also as ISO 28300).
  • Normal venting: thermal in-breathing (cooling) and out-breathing (heating + product movement).
  • Emergency venting: external fire exposure — table-based wetted-area heat input.
  • Heat input formula: Q = 21,000·F·A^0.82 (BTU/hr) where A = wetted area (ft²), F = environment factor.
  • Pilot-operated PV vents allowed in lieu of weighted pallet vents.
  • Maximum allowable pressure typically 2.5 psig (matches API 650 limit).
  • Combined pressure & vacuum venting capacity sized for worst-case scenario.