OISD 118 PDF

Though every effort has been made to assure the accuracy and reliability of the data contained in these documents. OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from their use. These documents are intended to supplement rather than replace the prevailing statutory requirements. Barakhamba Road New Delhi iii. It is hoped that the provision of this document. Oil Industry Safety Directorate OISD was established in staffed from within the industry in formulating and implementing a series of self regulatory measures aimed at removing obsolescence.

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Though every effort has been made to assure the accuracy and reliability of the data contained in these documents.

OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from their use. These documents are intended to supplement rather than replace the prevailing statutory requirements. Barakhamba Road New Delhi iii. It is hoped that the provision of this document. Oil Industry Safety Directorate OISD was established in staffed from within the industry in formulating and implementing a series of self regulatory measures aimed at removing obsolescence.

This document will be reviewed periodically for improvements based on the experience and better understanding.

With this in view. The original document on "Layouts for Oil and Gas Installations" was published in November and its first revision released in July In August it was amended inline with the recommendations of the High Power Committee. Attempts have been made to incorporate the latest technological changes. New Delhi House OISD constituted number of functional committees comprising experts nominated from the industry to draw up standards and guidelines on various subjects. Madras Refineries Limited.

New Delhi Amended Edition — August Amendments were carried out to this standard based on the recommendation of High Power Committee set up in by the Ministry of Petroleum and Natural gas to review the standard with respect to land requirement inline with national and international standards.

Oil and Natural Gas Corporation Ltd. Bharat Petroleum Corporation Ltd. Engineers India Limited.. Hindustan Petroleum Corporation Ltd. Engineers India Limited. Shri Thomas Chacko. Shri S. Shri K. Banerjee Shri M. Shri D. Shri A. New Delhi In addition to the above. Panipat Refinery. Shah Shri S. Shri Sunil Dewan. Mumbai Refinery. Shri H. New Delhi Department of Explosives. Mumbai Kochi Refineries Limited.

Nagpur BPCL. New Delhi Shri Arvind Kumar. For these reasons. Lube oil installations and other Petroleum storage installations such as Crude oil gathering stations. Fire station A building housing facilities of parking fire tenders and keeping other ready to use fire-fighting equipment for meeting plant emergencies.

Examples are Butane. At times plants are modified to operate at higher capacities or efficiencies necessitating larger storage requirements than contemplated earlier. LPG facilities. It is not intended that requirement of this standard should be applied rigidly to existing premises where. For example process unit. The hydrocarbon industry over the years learnt lessons from fires and explosions throughout the world and has been updating plant safety norms including inter-distances between facilities and their relative locations.

C4 and Lighter ends Hydrocarbons or a mixture of Hydrocarbons containing four or less than four carbon atoms. Facility This refers to any building. Propylene etc. Marketing depots and terminals. May Indicates provisions that are optional. C is likely to be refined. Lube Oil Installations The facilities for receipt. C or any flammable gas or vapor in a concentration capable of ignition is likely to be present.

Liquefied gases including LPG do not fall under this classification but form separate category. For classification and extent of hazardous area. OISD-STD 2 flash on application of a small pilot flame under specified conditions of test as per IS: Part-I.

Note: In the following cases. It includes lubeblending plants. Drilling activities and facilities upstream of the Christmas Tree of a well are not covered under this definition. Excluded Petroleum: Liquids which have flash point of 93 oC and above. Gas Processing Plant Gas processing plant is a facility where natural gas is received and processed to separate gas. Shall Indicates provisions that are mandatory.

For floating roof tanks. The entire area should be sub-divided into blocks. Presence of ignition source shall always be contemplated beyond the boundary wall of the installation. Roads separating the blocks shall act as firebreaks.

Both these approaches should be available for receipt of assistance in emergency. Implementation of these provisions shall be made based upon consideration of the followings.

Alternative access shall be provided for each facility so that it can be approached for fire fighting in the event of blockage on one route. All process units and dyked enclosures of storage tanks shall be planned in separate blocks with roads all around for access and safety.

OISD-STD 3 supporting services which are directly required for operation of the plant e. Primary traffic roads in the installation should be outside hazardous areas. Risk to and from adjacent facilities. Statutory obligations 5. For details. Horizontal clearance shall be in line with the Indian Electricity Rules. It shall not be located on a lower level than surrounding plants and tank farms. To prepare a layout.

Service buildings. Site topography including elevation. LPG storage vessels and other pressurized storage vessels. In undulating areas. OISD-STD 4 o Future expansion should be assessed and b Process unit s. Cooling Towers should be located downwind of process equipment and substation so that fog developed will not cause corrosion or obstruct vision or short-circuiting. Meteorological data. When external power grid is interconnected with plant power generation facilities.

Approach roads to main plant areas. Seismic data. Bathymetric data high tide level. There shall be no structure that would fall on the control room in case of a blast. Environmental considerations. Highest flood level in the area.

Process units. Aviation considerations. Smoking booths should not be provided in the hydrocarbon industry. However if required. Heat Exchangers and vessels should be grouped together forming outer rows on both sides of the rack.

Flare should be located upwind of process units and the area around flare should be paved. This should be closer to disposal point by the side of the boundary and at lower grade to facilitate gravity flow of effluent.

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