Reactors with internals and / or containing catalysts. information should be collected on the following aspects. jockey pumps. (d) Air fin coolers should be installed above the pipe rack / technological structures / independent structure. . Equipment drawing air (e. Minimum separation distance of 50 meters is recommended between sulfur storage / handling and any facility or boundary wall. above classification does not apply and special precautions should be taken as required: o) Pipeline Installations Pipeline Installations are the facilities on cross-country pipelines and include sectionalizing valve station. Pump stations and piping manifold should be located outside dyke areas by the side of roads. .Meteorological data. Chemical / Toxic chemicals storage. (i) Blow down facility (open pit type) / oil catcher shall be located at a distance not less than 30 m from fired heater / any fired equipment. Tanks shall be arranged in maximum two rows so that each tank is approachable from the road surrounding the enclosure. for a group of floating roof tanks Fixed cum floating roof tanks shall be treated as fixed roof tanks. . operability.0 LAYOUT OF PROCESS UNITS Equipment in process unit can be arranged in many ways. (t) Minimum headroom under vessels." It includes lubeblending plants. h) k) LPG Facilities LPG facility is one where liquefied petroleum gas (LPG) is stored. For the installations covered under Oil Mines Regulation. Smoking booths should not be provided in the hydrocarbon industry. 7. Facility This refers to any building. for Class-A and Class-B petroleum products is more than 5000 cum or the diameter of Class-A or Class-B product tank is more than 9 meters.3 and Table-4. Cylinder evacuation facilities Tank Truck Loading / unloading gantry Tank wagon gantry Rail spur Pump house / Compressor house (LPG) Fire Water pump house 1 2 3 4 5 6 7 8 Note-1 T7 30 30 50 30 15 60 T7 x 30 30 50 30 30 x 30 30 15 30 50 30 15 60 30 30 30 30 50 50 30 60 50 50 50 50 50 50 30 60 30 30 30 50 50 50 30 60 15 30 15 30 30 30 x 60 60 x 60 60 60 60 60 x TABLE– 7 SEPARATION DISTANCES BETWEEN LPG STORAGE VESSELS AND BOUNDARY WALL / GROUP OF BUILDINGS NOT ASSOCIATED WITH LPG FACILITIES "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices." these should be located in open area. boiler house. stabilized and despatched for further processing. Effluent Treatment Plant should be located minimum one block away from process unit area. • 120. or change in state. m) n) — Class-B Petroleum: Liquids which have flash point of 23 oC and above but below 65 oC." Now our products are Class C i.e. amenities Boundary wall 0.0 9 9 9 15 15 15 3 15 15 15 2 0.5 6 9 0.5 9 15 4.5D 0.5 4.5 x x x 3 3 7 15 9 9 9 9 9 x 9 9 3 9 9 9 8 15 4.5 3 x x x x General notes to Table –5: "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices.5D 0.5D 4.5D Min 3.5 1.5 0.5D 0.0 9 4. operational and maintenance requirements “D” indicates the diameter of the larger tank. (i) (ii) Floating roof tanks having protection for exposure Tanks with weak roof-to-shell joint having approved foam or inerting system and the tank diameter not exceeding 50 meters h) For the facilities not covered in Table. The table shall be read in conjunction with the notes specified with the table. Aviation storage & fuelling stations. Storage Tank for Petroleum Class C Storage / Filling Shed for petroleum Class A or class B Storage / Filling Shed for Petroleum Class C Tank vehicle loading / Unloading for petroleum class A or class B Tank Vehicle loading / unloading for Class C Flame proof Electric Motor Non flame proof electric Motor Boundary wall T4 T4 15 15 15 15 8 15 0.5 D Min 20 m 15 10 20 10 x x x "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices.1 2 3 4 5 6 7 8 9 Storage Tank for Petroleum Class A / Class B.5 D Min 20 m T4 x 15 x 15 x x x 0." 7. Bulk handling facilities.1." Oisd 118 Standard Pdf Posted By admin On 30/04/19 Hp support assistant … Accordingly, OISD constituted a number of functional committees comprising of experts nominated from the industry to draw up standards and guidelines on various subjects. Shri H.COMMITTEES ON LAYOUTS FOR OIL AND GAS INSTALLATIONS Second Revision – Month /Year LEADER Shri Vinay Kumar MEMBERS GAIL (India) Limited. important buildings and facilities. OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from their use. populated and hazardous areas.g. treating or storing crude oil and includes central tank farm. 8. Adequate space should be provided around cold boxes for ease of operation and maintenance. Flare should be located upwind of process units and the area around flare should be paved. LPG Workshop B PCL Pune 6-7 March 2020. (q) Blow down facilities / buried drum should be located at one corner of the plant farthest from furnace or any fired equipment and on the lee-ward side of the unit. . Pumps handling hydrocarbons above the temperature of o 230 C or C4 and Lighters should not be installed underneath the air fin coolers. FD fan etc) should be located away from Sulfur recovery unit / Sulfur handling facility. "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices." This shall be 36 meters considering the 6-meter wide road passing through the center. pig launching / receiving station. . Separate collection system should be provided for different types of waste generated in the process plant such as oily water." The Static and Mobile Pressure Vessels (Unfired) Rules. Adequate spacing between equipment will help in minimizing the spread of fire. LAYOUTS FOR OIL AND GAS INSTALLATIONS. gas compressor station and well head installation.0 SCOPE This document lays down minimum requirements of layouts within the plant boundary for petroleum refineries. There shall be no structure that would fall on the control room in case of a blast.Flares . pipes. For classification and extent of hazardous area. if these are covered from the top and provided with adequate venting to safe location. standards for design, layout and operation of various equipment, facility and activities involved in this industry. cable racks. Note-7 The distances specified are for the elevated flare. LPG bottling facilities should be located at a safe distance from other facilities with minimum ingress to trucking traffic and downwind to storage. The present document on “Layouts for Oil and Gas Installation” is the second revision of this OISD Standard. 6. (c) "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices. Spheres and bullets shall be treated as separate groups with 30 meters separation distance between two groups. Kochi HPCL Visakh Refinery. (c) Excluded petroleum should be treated as Class-C petroleum for the purpose of separation distances and Table – 5 shall be applicable for their separation distances. a) Table-6 is applicable for total storage of above 100 Tonnes. Fuel Oil day tank shall be located at a distance of not less than 15m from equipment except those facilities such as heat exchanger. These OISD standards are periodically reviewed to incorporate the latest technological. Shri S. Shri K.Banerjee Shri M. Shri D.Palnitkar. Distances given for the tanks are shell to shell in the same dyke. or other physical feature used in petroleum refining. instrumentation and the required operating & supporting personnel.0 INTRODUCTION Hydrocarbon processing and handling plants are inherently hazardous.0 a) DEFINITIONS Block Facilities operated / used in integrated way and surrounded by roads.OISD-STD-118 1 -------------------------------------------------------------------------------------------------------------------------------------- LAYOUTS FOR OIL AND GAS INSTALLATIONS 1. equipment. This. T4.0 4. The following are the key codes and standards requirements in India for tank farm design. (g) 7.6meter wide flat section on top for stability of the dyke wall.0 m above average inside grade level. (r) Operators cabin may be provided in the process unit. (b) Dyked enclosure shall be able to contain the complete contents of the largest tank in the dyke in case of any emergency. .1 1 2 3 4 5 6 7 8 9 10 11 12 13 Storage Tank Class A Storage Tank Class B Storage Tank Class C Storage / Filling shed for petroleum Class -A Storage / Filling shed for petroleum Class -B Storage / Filling shed for petroleum Class -C Tank vehicle Loading / unloading Class .5D x 9 4.5 9 4.5 x 3 x x x 12 15 D Min 4.5 9 4.5 x 3 1.5D 0.5D / 6.5 4.5 3 4.5D x 6 1.5 4.C Flame proof Electric motors Non Flame proof Electric motors Office building. natural streams/ canals . chemicals etc should have a drop-out area for removing / installing the internals and / or for loading / unloading of catalysts and chemicals.OISD-STD-118 6 -------------------------------------------------------------------------------------------------------------------------------------- (c) Heat exchangers should be located perpendicular to the pipe rack on the outer row to facilitate pulling of tube bundles with mobile crane or by other means. Panipat Refinery. The height of tank enclosure dyke (including free board) shall be at least 1." and ease of maintenance should be considered in locating each item within the unit.OISD-STD-118 5 -------------------------------------------------------------------------------------------------------------------------------------- to provide one-way traffic pattern for entrance and exit. SEPARATION DISTANCES FOR LPG FACILITIES TABLE . Bharat Petroleum Corporation Ltd. Bombay. Six OISD standards have been included in The Petroleum Rules (OISD STD 105, OISD STD 116, OISD STD 117, OISD STD 118, OISD STD 141, OISD STD 156) and Five OISD standards have been included in the Gas Cylinder Rules (OISD STD 144, OISD STD 150, OISD STD 169, OISD STD 179, OISD STD 210) The minimum distances recommended many years ago need review in the context of today's environment in the industry. OISD constituted number of functional committees comprising experts nominated from the industry to draw up standards and guidelines on various subjects. storage areas for solid products such as petroleum coke. There shall not be any deep ditches in the surrounding area to avoid LPG settling. LAYOUT FACILITIES OF BLOCKS / gantry.Bathymetric data (high tide level. Consideration should be given to access for fire fighting. Note-11: Boiler house or heater of a process unit is to be treated as a separate identity only for the consideration of surrounding blocks / facilities. (i) Where ambient temperatures or the handling temperatures are higher than the flash point of the product. Oil Industry Safety Directorate Government of India Ministry of Petroleum & … These could be suitably modified as required to suit space constraints and relevant engineering practices except the followings.3 7 8 9 1 2 3 4 5 6 "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices. .SEPARATION DISTANCES BETWEEN BLOCKS/FACILITIES Sr no 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From / To Process Units Process Control Room (Note –2) Storage Tanks Class-A Storage Tank Class-B Storage Tank Class-C Pressurised Storage: LPG/ C4 & Lighter / H2 Flare (Note-7) Bulk Loading POL (Rail /Road) Bulk Loading LPG (Rail /Road) Fire Station / First Aid Center Boiler house / Process Unit Heaters (Note-11) Rail Spur Boundary wall around installation Service buildings Cooling tower. The minimum height of dyke wall in case of excluded petroleum shall be 600 mm. 1.05 Whether the location of halipad is safe and conforming to DGCA norms? "OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from use of the OISD Standards/ Guidelines/ Recommended Practices. thereby splitting the unit into two or more areas of equipment. e) Distance of stabling line shall be as per Railway Standards. maintenance and inspection of Terminal and Tank facilities. Gas Processing Plant Gas processing plant is a facility where natural gas is received and processed to separate gas. the minimum separation distance shall be 30 meter. bitumen / asphalt etc and other open storage areas like scrap yards and dumping ground . Class-A and / or Class-B petroleum may be stored in the samedyked enclosure. Bombay. etc should be 2. Process control room to Process units / boiler house / heaters the minimum separation distance shall be 30 m. For distances within a dyke. (a) Vessels shall be arranged into groups each having a maximum of six vessels.1 7. These interdistances are based on OISD Standard 118, Table 1. However it shall not exceed 60cm at shallow sump position. Grouping of petroleum products for storage shall be based on the product classification. . (b) LPG rail loading/unloading gantry shall be located on a separate rail spur and shall not be grouped with other petroleum products. The requirement of green belt / buffer zone beyond the plant boundary is outside the scope of this standard. At times plants are modified to operate at higher capacities or efficiencies necessitating larger storage requirements than contemplated earlier. API Separators / Oil sludge pit 1 Note-1 Note-3 30 30 30 60 90 45 45 60 45 30 60 60 30 90 2 Note-3 x 3 30 Note-4 4 30 Note-5 Note-6 Note-6 Note-6 30 90 30 30 60 (90) 30 T3 30 30 50 5 30 30 Note-6 Note-6 Note-6 30 90 30 30 60 (90) 30 T3 30 30 50 6 60 60 30 30 30 T7 90 30 T6 90 (90) 30 T7 45 30 60 7 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 8 45 45 30 30 30 30 90 Note-8 Note-9 60 30 Note-10 T3 60 30 50 9 45 45 30 30 30 T6 90 Note-9 T6 90 (90) T6 T6 60 30 50 10 60 30 60 60 60 90 90 60 90 x 30 30 12 12 30 90 11 45 Note-3 (90) (90) (90) (90) 90 30 (90) 30 x 15 50 30 30 Note-12 12 30 x 30 30 30 30 90 Note-10 T6 30 15 x 30 6 15 50 13 60 30 T3 T3 T3 T7 90 T3 T6 12 50 30 x 6 30 50 14 60 15 60 30 30 45 90 60 60 12 30 6 6 x 30 50 15 30 30 30 30 30 30 90 30 30 30 30 15 30 30 x 15 TABLE – 1 16 90 30 50 50 50 60 90 50 50 90 Note12 50 50 50 15 x Note-4 Note-6 Note -5 Note-6 30 60 90 45 45 30 Note-3 x 30 15 30 30 Note-6 30 90 30 30 60 (90) 30 T3 60 30 50 General Notes to Table-1 . Propylene etc. (h) Vessels. (a) In a dyked enclosure where more than one tank is located. oisd standard 117 oil industry safety directorate pdf Free access for oisd standard 117 oil industry safety directorate pdf from our huge library or simply read online from your computer instantly. refer OISD-STD-163. The edge of the road shall not be less than 15 meters away from the edge of the unit. Bombay. OISD-STD –117 on Fire protection facilities for Petroleum depots and terminals 7. condensate etc. dusty operations (e. i) t) u) Should Indicates provisions that are recommended but not mandatory. New Delhi In addition to the above. f) Road widths. Dyke wall design calculations to be enclosed. Nagpur BPCL.Buragohain. (i) Heaters should be located up wind at one corner of the unit. The cabin should be located upwind side of the unit in nonhazardous area and away from draining / sampling facilities. Excluded Petroleum: Liquids which have flash point of 93 oC and above. This should be closer to disposal point by the side of the boundary and at lower grade to facilitate gravity flow of effluent. Specific Notes to Table. Towers. 1 2 3 4 5 6 7 8 FROM / TO LPG Storage vessels Boundary wall / group of buildings not associated with LPG plant Shed for filling and storage of LPG.
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