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TitleGE GAP 2.5.2 - 2001 Oil and Chemical Plant Layout and Spacing [High Quality]
File Size170.0 KB
Total Pages13
Table of Contents
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INTRODUCTION
POSITION
	Management Programs
		Hazard Identification and Evaluation Program
		Management of Change
	Duplication of Facilities
	General
	Overall Plant Layout
	Process Units
		Hazard Classification
		Intra-Unit Spacing
	Utilities
	Control Rooms
	Services
	Loading and Unloading
	Tank Farms
		Atmospheric Storage Tanks
		Pressurized and Refrigerated Storage Tanks
DISCUSSION
                        
Document Text Contents
Page 1

GAP Guidelines
A Publication of Global Asset Protection Services

GAP.2.5.2
September 3, 2001



20 Security Drive, Avon, Connecticut 06001-4226 Copyright© 2001, Global Asset Protection Services

Global Asset Protection Services and its affiliated organizations provide loss prevention surveys and other risk management, business continuity and facility asset
management services. Unless otherwise stated in writing, our personnel, publications, services, and surveys do not address life safety or third party liability issues. The

OIL AND CHEMICAL PLANT LAYOUT AND SPACING

INTRODUCTION

Loss experience clearly shows that fires or explosions in congested areas of oil and chemical plants
can result in extensive losses. Wherever explosion or fire hazards exist, proper plant layout and
adequate spacing between hazards are essential to loss prevention and control. Layout relates to the
relative position of equipment or units within a given site. Spacing pertains to minimum distances
between units or equipment.

Global Asset Protection Services (GAP Services) layout and spacing recommendations are for
property loss prevention purposes only and are intended for existing and new oil and chemical
facilities. These guidelines are intended to limit explosion overpressure and fire exposure damage.
They do not address shrapnel damage. If these guidelines cannot be followed, then additional loss
control measures, such as fire proofing, waterspray or blast hardening will be necessary.

GAP Services guidelines only address spacing and layout within a plant and are mostly applicable to
open structures. An open air design favors vapor dissipation, provides adequate ventilation, reduces
the size of the electrically classified area, and increases firefighting accessibility. Additional
information can be found in several publications.1

POSITION

Management Programs

Management program administrators should report to top management through the minimum number
of steps. They should also institute loss prevention inspection and audit programs to communicate
program effectiveness to top management. This management feedback is a key feature of
GAP.1.0.1 (OVERVIEW).2 In developing a program, pay particular attention to the following important
areas:

Hazard Identification and Evaluation Program

Determine the plant layout and spacing necessary to limit loss size based on worst case scenarios for
vapor cloud, vessel and building explosions, and for fires. Calculate overpressure circles. See
GAP.8.0.1.1 for hazard analysis and evaluation methods applicable to various explosion or fire
scenarios. This analysis can be completed in coordination with GAP Services loss prevention
personnel.

provision of any service is not meant to imply that every possible hazard has been identified at a facility or that no other hazards exist. Global Asset Protection Services and its
affiliated organizations do not assume, and shall have no liability for the control, correction, continuation or modification of any existing conditions or operations. We
specifically disclaim any warranty or representation that compliance with any advice or recommendation in any document or other communication will make a facility or
operation safe or healthful, or put it in compliance with any law, rule or regulation. If there are any questions concerning any recommendations, or if you have alternative
solutions, please contact us.

Page 13

GAP.2.5.2
September 3, 2001

REFERENCES

1 Hazard Survey of the Chemical and Allied Industries, Technical Survey No. 3, 1968, American Insu. rance Association,
New York, NY.

, July 28, 1969, Chemical Engineering, McGraw Hill, New York,
NY.

Process Plant Layout, by J.C. Mecklenburgh, John Wiley & Sons, New York, NY.

Loss Prevention In The Process Industries, F. P. Lees, Volumes 1 & 2, Butterworths, Boston, MA.

Loss Prevention Fundamentals For The Process Industry, O. M. Slye Jr., Loss Prevention Symposium, March 1988,

NFPA 30-2000, Flammable And Combustible Liquids Code, National Fire Protection Association, Quincy, MA.

uefied Natural Gas, National Fire Protection Association, Quincy, MA.

.

5. Center for Chemical Process Safety, American Institute of Chemical Engineers, New York, NY.

6. Fire & Explosion Index, Hazard Classification Guide, Dow Chemical Company, Sixth edition, available from the American
Institute of Chemical Engineers, New York, NY.

7. API RP 752-1995: Management of Hazards Associated with Location of Process Plant Buildings, American Petroleum
Institute, Washington, DC.

An Engineer’s Guide To Process-Plant Layout, F.F. House

American Institute of Chemical Engineers, New York, NY.

NFPA 58-2001, Liq

2. OVERVIEW, Global Asset Protection Services.

3. NFPA 496-1998, Purged And Pressurized Enclosures For Electrical Equipment In Hazardous (Classified) Locations,
National Fire Protection Association, Quincy, MA

4. API RP 521-1982: Guide For Pressure-Relieving And Depressurizing Systems, American Petroleum Institute,
Washington, DC.

13

GAP Guidelines
A Publication of Global Asset Protection Services

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