API RP 752-2009 pdf download

API RP 752-2009 pdf download.Management of Hazards Associated with Location of Process Plant Permanent Buildings.
1 Scope 1.1 General This recommended practice (RP) provides guidance for managing the risk from explosions, fires and toxic material releases to on-site personnel located in new and existing buildings intended for occupancy. This RP was developed for use at refineries, petrochemical and chemical operations, natural gas liquids extraction plants, natural gas liquefaction plants, and other onshore facilities covered by OSHA 29 CFR 1910.119 [1] . Buildings covered by this RP are rigid structures intended for permanent use in fixed locations. Tents, fabric enclosures, and other soft-sided structures are outside the scope of this document. 1.2 Guiding Principles This RP is based on the following guiding principles: a) locate personnel away from process areas consistent with safe and effective operations; b) minimize the use of buildings intended for occupancy in close proximity to process areas; c) manage the occupancy of buildings in close proximity to process areas; d) design, construct, install, modify, and maintain buildings intended for occupancy to protect occupants against explosion, fire, and toxic material releases; e) manage the use of buildings intended for occupancy as an integral part of the design, construction, maintenance, and operation of a facility. 1.3 Relationship with API RP 753, First Edition Buildings described in API RP 753, Management of Hazards Associated with Location of Process Plant Portable Buildings, First Edition, June 2007, as “portable buildings specifically designed to resist significant blast loads” and intended for permanent use in a fixed location are covered in this document (API RP 752). All other portable buildings are covered by API RP 753.
3.2 building A rigid, enclosed structure. 3.3 building siting evaluation The procedures described in this document used to evaluate the hazards and establish the design criteria for new buildings and the suitability of existing buildings at their specific location. 3.4 confinement A physical surface that inhibits the expansion of a flame front of a burning vapor cloud in at least one direction. Examples include solid decks, walls, or enclosures. 3.5 congestion A collection of closely spaced objects in the path of the flame front that has the potential to increase flame speed to an extent that it can generate a damaging blast wave. 3.6 consequence The potential effects of an explosion, fire, or toxic material release. Consequence descriptions may be qualitative or quantitative. 3.7 consequence-based approach The methodology used for building siting evaluation that is based on consideration of the impact of explosion, fire, and toxic material release which does not consider the frequency of events 3.8 essential personnel Personnel with specific work activities that require them to be located in buildings in or near a process area for logistical and response purposes. The identification of essential personnel will vary with operation and work activities including normal operation, start-up, and planned shutdown. Examples of essential personnel include, but are not limited to, operators and maintenance personnel. Examples of persons who are not essential personnel include, but are not limited to, designers, timekeepers, clerical staff, administrative support, and procurement staff. 3.9 hazard An inherent physical or chemical characteristic (e.g. flammability, toxicity, corrosivity, stored chemical energy, or mechanical energy) that has the potential for causing harm to people, property, or the environment.
3.13 process area An area containing equipment (e.g. pipes, pumps, valves, vessels, reactors, and supporting structures) intended to process or store materials with the potential for explosion, fire, or toxic material release. 3.14 quantitative risk assessment The systematic development of numerical estimates of the expected frequency and consequence of potential accidents based on engineering evaluation and mathematical techniques. The numerical estimates can vary from simple values of probability/frequency of an event occurring based on relevant historical industry or other available data; to very detailed frequency modeling techniques. 3.15 risk A measure of potential injury, environmental damage, or economic loss in terms of both the incident likelihood and the severity of the loss or injury. 3.16 risk-based approach A quantitative risk assessment methodology used for building siting evaluation that takes into consideration numerical values for both the consequences and frequencies of explosion, fire, or toxic material release. 3.17 spacing tables approach The “spacing tables” approach uses established tables to determine minimum separation distances between equipment and buildings intended for occupancy. Industry groups, insurance associations, regulators, and owner/ operator companies have developed experience-based spacing tables for minimum building spacing for fire. 3.18 toxic material An airborne agent that could result in acute adverse human health effects.