There is always the potential for the systems, to be damaged in a hazardous event. Offloading to shuttle tankers is a regular event and poses a significant risk both on the floating production facility and the shuttle tanker. It is particularly important to follow inherently safe design principles, where the consequences of process release or system failure, are high. Mobile extinguishers should be fitted with discharge hoses of length sufficient to reach any part of the protected area. This, coupled with feedback from some serious accidents that occurred in the recent past in India and abroad, emphasized the need for the industry to review the existing state of art in designing, operating, and maintaining oil and gas installations.
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Focus should be on following priority: Nozzles should be of robust construction, easy to operate and made of materials suitable for the intended duty. A single large supply unit is likely to lose fire fighting capabilities, if the unit malfunctions or is damaged. While selecting the location for mobile extinguishers, consideration for their mobility in the area should be carefully considered.
They should oidd the following: There shall be a pressure sensor downstream of each sprinkler valve and a flow indicator upstream of each area indicating in which area release is taking place. The ESD system may also be initiated automatically when process conditions indicate a loss of control which requires ESD, for instance low air pressure, high liquid level in a flare system. Egress, escape and evacuation routes TR and alternate protected muster points For potential fire scenarios: Where required in the FES, allowance should be made to cope with escalation of the fire to adjacent areas.
Records of inspection reports showing date of inspection, scope of inspection, any corrective action taken or required with the name and initial of person carrying out inspection should be retained. Points of ignition Consider ignition potential for all release scenarios Especially consider the location of all non-certified equipment with respect to releases and associated gas plumes e. In case of stored pressure type of extinguishers, compaction oiss powder to be checked at the time of refill or based on shelf life of the powder.
OISD STANDARD-117 – Oil Industry Safety Directorate
The ESD system should be designed to permit continued operation of electrical power generating stations and fire-fighting systems when needed in an emergency. The equipment count would probably be low. The amount of venting available and the degree of congestion in the process area significantly influence the severity of an explosion. Fire extinguishers containing an extinguishing medium which, either by itself or under expected conditions of use, gives off toxic gases in such quantities as to endanger persons should not be used.
These intervals and standards should be oisx after taking into account the required reliability or the criticality of the system, historical information on the likelihood of failure, known causes of failure, the environmental conditions and taking into consideration OEM recommendations. The ESD system of the satellite standqrds shall not be able to be taken out of service from the main platform and shall be in operation when the platform is unmanned.
OISD STANDARD – Oil Industry Safety Directorate
The Cylinder body should be steel and the valve should be squeeze grip type and should be of forged brass chrome plated. Personnel should repeat the trainings at regular intervals to develop and maintain confidence. Similar requirements are to be considered for hydraulic systems also.
Where no such boundary isolations are in place, it becomes possible for hydrocarbon which is stored in one module to be released into another module and fuel escalation of further fires. The use of passive fire protection may not affect the nature of the fire but will affect the response of objects subjected to fire attack and delay or prevent incident escalation.
The alarm and communication system shall be powered from the main power system and from a monitored Uninterruptible Power Supply UPS. The escape routes shall be planned such that they lead to assembly point, life boats and life raft stations, helicopter deck, 45 etc. Such devices should reset automatically once the excess pressure has been relieved. Carbon steel minm 1. Lift shall not be considered as a part of escape route.
Escape routes and piping runs may be very long and personnel may be required to pass the origin of the incident to reach the temporary refuge. Where appropriate, enclosures should be provided to protect this equipment against mechanical damage and against the environment.
Calculate the rate of temperature rise of the vessel wall neglecting heat transfer to the contents. A portable extinguisher provided for that space may be located outside near the entrance to that space.
Equipment spacing and layout variations: For large sprinkler systems, consideration should be given to dividing the system so that each section can be monitored to indicate which section has operated. The means by which the initial event may escalate, and at each escalation stage, the corresponding probability and time to escalation.