Oisd 117

Oisd 105

Design flow rates shall be distributed at nodal points to give the most realistic way of water requirements in an emergency. Monitors shall be placed in opposite direction. Alternatively, water circulation should be carried out in the above ground pipelines or any other suitable means. Hose boxes, water monitors and hydrant outlets shall be painted with Luminous Yellow paint as per IS: 5. Places where above ground piping is likely to get damaged mechanically. Clean agent fire extinguishing system as per NFPA Standard latest edition shall be provided for such protection system. The success of a Work Permit System depends upon the training, motivation and participation of all individuals concerned with its implementation. However, foam supplier data shall be used for determining water requirement. Efficient and effective foam delivery system is a vital tool for its usefulness in controlling the fire. For formulating and implementing a series of self regulatory measures aimed at removing obsolescence, standardising and upgrading the existing standards to ensure safe operations. The deteriorated foam compound can be used for fire training purposes. Monitors shall be located to direct water on the object as well as to provide water shield to firemen approaching a fire. Automatic Actuated Rim seal Protection System for Floating Roof tanks: Automatic actuated Rim Seal fire detection and extinguishing system shall be provided on all existing as well as new external floating roof tank storing Class A Petroleum products.

Bhopal Gas Tragedy and abroad, emphasised the need for the industry to review the existing state of art in designing, operating and maintaining oil and gas installations.

Then he shall also sign the permit and keep the records for one month.

Oisd 144

Fixed type foam generators for each tank dyke. Clean agent fire extinguishing system as per NFPA Standard latest edition shall be provided for such protection system. Foam induction to the monitor shall be possible from minimum 60 m distance from the monitor. For sample calculation, refer Annexure- III. The maximum running distance to locate an extinguisher in working areas shall not exceed 15 Mtr. For non-hazardous area, they shall be spaced at 45 m intervals. The location of HVLRs to be planned in such a way that the very purpose of these monitors is served and throw of the monitors is safely delivered at the aimed object. Manual type HVLR shall be considered only where sufficient distance is available from the point of hazards and in-company firefighting infrastructure round the clock fire tender and dedicated manpower like in Refineries with respect to the location is available. The recommended Work Permit System is described covering various aspects: When a work permit is required?

Also whenever fire water demand increases due to addition of facilities or extensive extension of network, fresh hydraulic analysis shall be carried out.

This quantity can be suitably reduced, if mutual aid for foam supply is available.

Oisd standards in petroleum rules

It may be necessary to assume several combinations of flow requirement for design of network. The work may be planned to be done either departmentally or through a contractor. Storage containers shall be located as near as possible to hazard area but shall not be exposed to fire. The piping system is connected to the hydrant system water supply through an automatically or manually actuated valve which initiates the flow of water. These high volume long range monitors shall be located at distance of 15m to 45 m from the hazardous equipment. Fresh water should be used for fire fighting purposes. Design flow rates shall be distributed at nodal points to give the most realistic way of water requirements in an emergency. The electrical or hydraulic remote control mechanism shall be in line with Hazardous Area Classification. The fire extinguishers shall be provided at various locations as stipulated in OISD std. Additional monitors shall be provided in such a way that each tank is in the coverage area of at least two monitors.

All the components of the system shall be capable of withstanding heat of fire and severe weather conditions. In addition to the nozzles provided in the hose boxes there shall be at least 2 nos.

For simplification of procedure, Hot Work Permit also covers permission for vessel entry, vessel boxing-up and excavation. It comprises of high back pressure foam generator connected through product lines or separate lines near the bottom of the tank.

The work may be planned to be done either departmentally or through a contractor. The time needed to obtain the gas for replacement to restore the systems shall be considered as a governing factor in determining the reserve supply needed.

A system of colour coding is recommended to identify two types of permits.

oisd 117 sep 2017

Fixed type foam generators for each tank dyke.

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Oil Industry Safety Directorate (OISD)