Api 2350 4th Edition
пятница 28 февраля
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Applicability
The scope of this recommended practice (RP) is specifically limited totanks associated withmarketing, refining, pipeline and similar facilities containing ClassI or Class II petroleumliquids. This RP does not apply to:
• Underground storage tanks
• Aboveground tanks of 1320 U.S. gallons (5000 liters) or less
• Tanks that are integral to a process
• Tanks containing Class III liquids
• Tanks containing non-combustible liquids
• Service stations
• Loading or delivery from wheeled vehicles (such as tank trucksor railroad tank cars)
Relationship of This Recommended Practice to NFPA 30
This document was prepared to include consistency with NFPA 30-2003Edition, Chapter 4.6, whichincludes the following requirements:
Aboveground tanks at terminals receiving transfer of Class I liquidsfrom mainline pipelines ormarine vessels shall follow formal written procedures to preventoverfilling of tanks utilizing oneof the following methods of protection:
1. Tanks gauged at frequent intervals by personnel continuously on thepremises during productreceipt with frequent acknowledged communication maintained with thesupplier so that flow can bepromptly shut down or diverted.
2. Tanks equipped with a high-level detection device that isindependent of any tank gaugingequipment. Alarms shall be located where personnel who are on dutythroughout product transfer canpromptly arrange for flow stoppage or diversion.
3. Tanks equipped with an independent high-level detection system thatwill automatically shut downor divert flow.
4. Alternatives to instrumentation described in 4.6.1.1(2) and4.6.1.1(3), where approved by theauthority having jurisdiction as affording equivalent protection.
Instrumentation systems covered in 4.6.1.1(2) and 4.6.1.1(3) shall beelectrically supervised orequivalent.
Formal written procedures required 4.6.1.1 shall include thefollowing:
1. Instructions covering methods to check for proper line-up andreceipt of initial delivery totank designated to receive shipment.
2. Provisions for training and monitoring the performance of operatingpersonnel by terminalsupervision.
3. Schedules and procedures for inspection and testing of gaugingequipment and high-levelinstrumentation and related systems. Inspection and testing intervalsshall be acceptable to theauthority having jurisdiction but shall not exceed 1 year.
Note: Reprinted with permission from NFPA 30-2003 Flammable andCombustible Liquids Code, Copyright© 2003, National Fire Protection Association, Quincy, MA 02269.This reprinted material is notthe complete and official position of the NFPA on the referencedsubject, which is represented onlyby the standard in its entirety.
The scope of this recommended practice (RP) is specifically limited totanks associated withmarketing, refining, pipeline and similar facilities containing ClassI or Class II petroleumliquids. This RP does not apply to:
• Underground storage tanks
• Aboveground tanks of 1320 U.S. gallons (5000 liters) or less
• Tanks that are integral to a process
• Tanks containing Class III liquids
• Tanks containing non-combustible liquids
• Service stations
• Loading or delivery from wheeled vehicles (such as tank trucksor railroad tank cars)
Relationship of This Recommended Practice to NFPA 30
This document was prepared to include consistency with NFPA 30-2003Edition, Chapter 4.6, whichincludes the following requirements:
Aboveground tanks at terminals receiving transfer of Class I liquidsfrom mainline pipelines ormarine vessels shall follow formal written procedures to preventoverfilling of tanks utilizing oneof the following methods of protection:
1. Tanks gauged at frequent intervals by personnel continuously on thepremises during productreceipt with frequent acknowledged communication maintained with thesupplier so that flow can bepromptly shut down or diverted.
2. Tanks equipped with a high-level detection device that isindependent of any tank gaugingequipment. Alarms shall be located where personnel who are on dutythroughout product transfer canpromptly arrange for flow stoppage or diversion.
3. Tanks equipped with an independent high-level detection system thatwill automatically shut downor divert flow.
4. Alternatives to instrumentation described in 4.6.1.1(2) and4.6.1.1(3), where approved by theauthority having jurisdiction as affording equivalent protection.
Instrumentation systems covered in 4.6.1.1(2) and 4.6.1.1(3) shall beelectrically supervised orequivalent.
Formal written procedures required 4.6.1.1 shall include thefollowing:
1. Instructions covering methods to check for proper line-up andreceipt of initial delivery totank designated to receive shipment.
2. Provisions for training and monitoring the performance of operatingpersonnel by terminalsupervision.
3. Schedules and procedures for inspection and testing of gaugingequipment and high-levelinstrumentation and related systems. Inspection and testing intervalsshall be acceptable to theauthority having jurisdiction but shall not exceed 1 year.
Note: Reprinted with permission from NFPA 30-2003 Flammable andCombustible Liquids Code, Copyright© 2003, National Fire Protection Association, Quincy, MA 02269.This reprinted material is notthe complete and official position of the NFPA on the referencedsubject, which is represented onlyby the standard in its entirety.
API/ANSI 2350 4th and upcoming 5th edition guides users on these prerequisites for best practices that can ward off overfills. The new 4th and 5th editions of API 2350 radically change that way the tank receipts are supposed to be handled from a best practices point of view and from lessons of the past.