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HAZID WORKSHEET. Project: ANOA PHASE 4 – AGX COMPRESSION RECONFIGURATION PROJECT Node Description: DLB Activities in the vicinity and. As a result of the HAZID, 80 identified hazards in total were .. the workshop were also recorded relevantly in the HAZID worksheet by an. The HAZID study achieved its aim of identifying the nature and scale of hazards that Attachments: Power Plant Risk Register Spreadsheet.

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This is likely to include extreme ambient temperatures, wind and flooding. July 8, at 3: Further details of a particular method are published by the IAEA see below The estimated aircraft crash frequency may seek to take into account any flying restrictions which may apply to the site.

Each of the categories has a severity and a frequency. Extreme wind Licensees, any particular application should be assessed to ensure that there are no plant specific, i. If you want your ex-girlfriend or ex-boyfriend to come crawling back to you on their knees no matter why you broke up you need to watch this video right away For aircraft crash structural demand depends on the mass, rigidity, velocity and engine location of any aircraft assumed to impact directly or skid onto the structure, and also the angle of incidence of the impact direct or skidding.

The residual seismic risk from events less probable than the DBE can be a significant contributor to the total risk. It may, however, be possible to exclude some or all classes of aircraft on the grounds of low probability eg well below per annum of impact, thus obviating the need for structural design against impact or fuel fire.

HAZID Hazard Identification ~ Chemical Engineering Processing

The Process of Hazard Identification is the procedure to assess all the hazards that could directly and indirectly affect the safe operation of that plant and or system, and is referred to as the Hazard Identification procedure or HAZID. This is generally known as the cliff edge effect. Extreme ambient temperatures The extreme ambient temperature hazard is ameliorated by the slow development of extreme conditions and the relatively long timescales worisheet the plant to respond.

Here the Licensee should consider the withstand to shock loading, the possible impactors to the system from the facility, determining the largest single mass object from its potential drop height in free fall without structural interaction, or make a case for the probable but bounding collapse dynamics of the facility which can in some cases include structural interaction. In assessing safety systems claimed to mitigate the effects of external hazards, the assessor should have due regard to Reliability, redundancy, diversity and segregation.

To get the WTI oil priceplease enable Javascript. For each of the risk matrices, the frequency indicates how often the top events lead to the consequences in this category. Single failure criterion Safety systems required in response to any annual probability of exceedance external hazard should comply with the single failure criterion. In order to assess the probability of impact, the safety case will normally derive an effective “target area” for the site, taking account of the plan area and height of safety related buildings, a representative range of angles of impact and so on, which can then be compared with the aircraft crash frequency per unit area.


Sensitivity studies It should also be borne in mind that forecast climate change is likely to have an impact on many of the external hazards addressed here. The risk matrices sheet is shown below: There may be more than one way in which this can be achieved.

Most UK nuclear facilities are potentially subject to flooding both by extreme precipitation directly onto the site, and indirectly from rivers and the sea. Licensees should be expected to take the latest available predictions over the projected life of the facility, which may need to include the decommissioning phase of the installation in the submissions. As with the other environmental hazards it is important to ensure that the most up-to-date information available for a specific site is used in the hazard assessment.

An operational plant such as a nuclear reactor or critical systems operation such as weapons manufacture, handling and stowage or the operation of a passenger aircraft requires the design of a number of diverse interrelated systems, coexisting in the same limited physical space.

To check if you have the Advanced features, follow these steps: It can be assumed that there will be at least several hours notice of extreme conditions developing, and often several days. The hazard sheets contains four risk matrices: These hazards are referred to as internal hazards and can include, but are not limited to, radioactive inventory, fires, impacts, overpressures and explosions.

External man-made sources include radar hazif communication systems. Because of this, you have to unblock this functionality the first time you open the file in Excel.

Below you see a BowTie diagram, which was dragged in from the scrap book. The assessor should establish that the potential threats are recognised by the operators and appropriate prearranged responses are embodied in operating instructions. Low temperatures may also threaten cooling water supplies through freezing.

Solar flare effects have been known to cause problems on long transmission lines at high latitudes in Canadabut on current knowledge are not expected to cause significant effects at the lower latitudes of the UK with its shorter transmission lines.

As with the extreme temperature hazard it may be reasonable for the operational response to recognise some warning of extreme flooding, provided the necessary response measures can be initiated with sufficient margin. A hazard can be defined as any operation that could cause an Event release of toxic, flammable or explosive chemicals, gases haizd any action that could result in injury to personnel or woksheet to the environment.


The design basis analysis principles and the PSA principles should be satisfied, as appropriate, taking into account the direct impact of the worksheef on the structures, systems and components important to safety, secondary missiles, vibration effects and the effects of aircraft fuel burning externally hazod the buildings or workssheet structures, or entering the buildings or structures.

When relating to external and internal hazard assessment, a judgment on the frequencies at which hazard levels should be determined, in terms of Reactor Plant, guidance for this can be found in the HSE NII Safety Assessment Principals paper or SAPs and allow for plants that cannot give rise to large radiation doses to be designed against less onerous events.

This file originated from an Internet location and might be unsafe.

HAZID – HAzard IDentification Studies

For other hazards, such as seismicity, the forces acting on the installation will continue to increase progressively with increasing size or proximity of the event. The procedure of hazard identification is broken down and categorised into the two streams that can hazie the system both directly and indirectly, and is referred to as Internal Hazards and External Hazards.

Seismic Seismic hazard definition should include a reasonable frequency distribution of accelerations, i.

As noted above, however, the detail of the approach workseet to be appropriate to the nature of the hazard being addressed. High temperatures are a potential challenge to electrical equipment which may have essential safety functions. Also, you can set the cutoff for which hazards are added to the BowtieXP case file under settings. This will be more significant for the heavier classes of aircraft because of the quantity of fuel carried.

Doing HAZID in Excel

In the case of seismic engineering, one approach which has been adopted has been to show that the response of the plant remains fully elastic up to a significant margin beyond the design basis. It should also be borne in mind that forecast climate change is likely to have an impact on many of the external hazards addressed here. Typical problems could be wind tunnelling between tall structures, or vortex shedding from upwind facilities.

To check if you have the Advanced features, follow these steps:. It has previously been accepted that one satisfactory approach to the demonstration of absence of an adverse cliff edge effect is via the PSA.