ADOSH-SF Technical Guideline: Dealing with Adverse Weather Conditions

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Abu Dhabi Occupational Safety and
Health System Framework
(ADOSH-SF)
ADOSH-SF Technical Guideline
Dealing with Adverse Weather Conditions
Version 4.0
July 2024

ADOSH-SF – Technical Guideline
Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 2 of 22
Table of Contents
1. Introduction ....................................................................................................................................................... 3
2. Risk Management ........................................................................................................................... 4
3. Emergency Management / Incidents ........................................................................................... 6
4. Set a Procedure .............................................................................................................................. 7
4.1. Roles and Responsibilities ................................................................................................................. 7
4.2. Authority Levels .................................................................................................................................... 7
4.3. Employees ............................................................................................................................................... 8
4.4. Provide Clear Instructions.................................................................................................................. 9
4.5. Pre Storm Preparation....................................................................................................................... 11
4.6. Post Storm Hazards............................................................................................................................ 13
5. Monitoring Weather Alerts .......................................................................................................... 13
6. Common Issues ............................................................................................................................. 15
6.1. Heavy Rain / Lightning / Flooding ................................................................................................ 15
6.2. High Winds............................................................................................................................................. 17
6.3. Fog............................................................................................................................................................ 19
7. References .................................................................................................................................... 20
8. Document Amendment Record................................................................................................... 21

ADOSH-SF – Technical Guideline
Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 3 of 22
1. Introduction
(a) Although the United Arab Emirates is generally blessed with a stable climate and
abundant sunshine, there are still times when adverse weather conditions can add to
the risks that are associated with work and the workplace. These risks emanate from
a variety of weather conditions such as heavy rainfall, fog, dust / sand storms,
lightning strikes, or high winds.
(b) As with all the risks, it is vital that employers ensure that adverse weather hazards
are considered within the risk management program and to ensure that control
measures be developed in order to mitigate any potential risks facing their employees
and all individuals who may be impacted at the workplace. This document aims to
provide advice and guidance for employers and employees on the risks associated
with adverse weather that may impact the activities and employees at the workplace
and to provide information on the control measures that can be considered in in order
to mitigate these risks.

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 4 of 22
2. Risk Management
(a) It is a requirement under
ADOSH-SF – Element 2 – Risk Management that all entities
implement a robust risk management program and as part of this program, hazards
such as adverse weather must be considered when they pose a risk to occupational
safety and health.
(b) When undertaking a risk assessment on your activities it is vital to consider how the
task could be affected due to adverse and changing weather conditions. Some
examples of how adverse weather can affect the workplace and possible controls are
included below in table one.
Weather
Conditions Hazard Possible controls
Fog
Reduced visibility on
roads may lead to
vehicle collisions
• Vehicle speed to be reduced, keeping a
longer gap from the vehicle in front
• Fog lights to be used
• Vehicle to be driven using dipped headlights
• If visibility becomes very poor, driver to pull
over in a safe place until it improves
• Use of high visibility clothing
• Warning alarms (audio and visual) for plant
and equipment
Reduced visibility of
pedestrians
Rain
Reduced visibility and
increased stopping
distances may lead to
vehicle collisions
• Windscreen wipers to be kept in good
condition
• Vehicle speed to be reduced, with at least a
four-second gap (see note) from the vehicle
in front
• Lights to be used if visibility is poor
• Screen heater to be used to prevent misting
Slippery surfaces
caused by heavy rainfall
(entrances to offices,
hotels, retail etc)
• Appropriate signage provided
• Good housekeeping in place
• Non Slip rugs or mats provided at entrance
Flooding / Unstable
structures (construction
sites) due to heavy rain
and / or wash out of
sand
• Regular inspections
• Equipment secured
• Stop the Work
• Clear surrounding areas
Wind /
Sandstorms
Objects overturned
Objects blown loose
from fittings
• Regular checks and maintenance
• High risk items including scaffolding
structures, heavy cranes etc. removed or
secured during extreme high wind
• Follow manufactures instructions
• Stop the Work in high winds
High winds may lead to
driver losing
control of the vehicle.
• Vehicle speed to be reduced, maintaining a
steady course
• Drivers to keep a safe distance from other
vehicles
• Drivers to avoid overtaking, especially high-
sided vehicles and very small vehicles

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 5 of 22
Table One: common hazards during adverse weather conditions
Note: A four second gap between vehicles is a general rule to ensure that sufficient space and time is available to
perform an emergency stop without hitting the vehicle in front. This is measured by counting from a fixed point the
vehicle in front has passed until your own vehicle passes the same point – i.e. 1 thousand 1, 2 thousand 2 etc.
(c) The table above provides only a few examples of the hazards that can be present due
to adverse weather, these can change dependent on the industry and activities which
are being undertaken. For example the construction industry will be affected a lot
more by adverse weather than an office complex.
(d) Employers should ensure they have considered adverse weather within their risk
management program, otherwise this should be reviewed and any foreseeable
adverse weather events included in the program. Go through all the documented risk
assessments for the workplace and ask how these could be affected by adverse
weather.
(e) Detailed guidance on how to undertake a risk assessment is available within
ADOSH-
SF - TG – The Process of Risk Management.
Weather
Conditions Hazard Possible controls
• Consider postponing any driving
Reduced visibility due
to sandstorms
• Vehicle to be driven using dipped headlights
• If visibility becomes very poor, driver to pull
over in a safe place until it improves
• Warning alarms (audio and visual) for plant
and equipment
• Use of high visibility clothing

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 6 of 22
3. Emergency Management / Incidents
(a) Employers must consider adverse weather conditions when developing emergency
response plans as per the requirements of
ADOSH-SF – Element 6 – Emergency
Management.
(b) As part of the employers risk assessment program discussed in section 2, they will
have identified scenarios that require full emergency response plans to be developed.
(c) Review the emergency plans that have already been developed and ensure that
where applicable, any requirements related to adverse weather conditions have been
incorporated.
(d) As with all emergency plans, staff training is a vital element and this should include
training on how to deal with adverse weather conditions.
(e) Incidents that occur during adverse weather conditions, shall, if work related, be
managed in accordance with the requirements of
ADOSH-SF – Mechanism 11.0 –
Incident Notification, Investigation and Reporting.

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 7 of 22
4. Set a Procedure
(a) As an employer, consider developing a procedure for managing adverse weather
conditions, this will help to set the standard on how to manage these issues and also
take away any uncertainty for employees if they are caught up in adverse weather
conditions.
(b) Through the risk management program, employers will already have identified risks
that are most likely to affect their undertakings. Review the identified risks and look
at developing procedures to reduce the risk.
(c) These procedures can be very simple documents that provide guidelines and
standards that are to be followed during times of adverse weather.
4.1. Roles and Responsibilities
(a) A crucial element when setting any procedure is to develop clear roles and
responsibilities for employees within the organization. These will differ within entities
however below are some key requirements that will need to be considered and
assigned in relation to risk management for adverse weather conditions:
(i) defining internal requirements for managing adverse weather program;
(ii) assigning authority levels for decision making throughout the organization;
(iii) responsibility for monitoring weather reports;
(iv) escalation process throughout the organization;
(v) training and awareness for employees within the organization; and
(vi) communication with employees following an adverse weather alert.
(b)
ADOSH-SF - Element 1 – Roles, Responsibilities and Self-Regulation includes detailed
requirements that all entities must consider when discussing roles and
responsibilities
.
(c) Further guidance is also available within
ADOSH-SF - GD – OSH Roles and
Responsibilities.
(d) When developing a procedure also consider other persons that may be affected within
your workplace, such as contractors, visitors or members of the public.
4.2. Authority Levels
(a) When developing a procedure, set defined authority levels throughout the
organization for adverse weather conditions. These levels will define who can take
what action and when. It is important to note that adverse weather conditions can
come in very quickly and as such consider giving authority to staff at much lower
levels in the organization than normal as they will be able to see the direct effects of
the weather as it happens.
(b) Table two below provides some guidance and examples on suggested authority levels
within an organization. Positions within each entity will differ, along with the
authority levels given.

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 8 of 22
(c) As part of developing procedures, carefully consider what the impacts are of each
hazard and from this who will be best placed to make informed decisions on what
action to take.
(d) Table two below has been developed using the RACI format, which for the purposes
of this document is as follows:
(i) R = Responsible – Authorized to take action
(ii) A = Accountable – Accountable for all actions
(iii) C = Consulted on all decisions taken (prior to action)
(iv) I = Informed of decision
Weather Severity Level
Insignificant Minor Moderate Major Catastrophic
CEO / COO I/A I/A I/A I/A I/A
HR Director I / C I / C C C C
OSH
Director R R R R R
Project
Director /
Manager
C C R R R
Table Two: possible authority levels within an organization
4.3. Employees
(a) An important factor when developing a procedure is to identify the location of your
employees and their travel requirements. This will help when disseminating weather
alerts.
(b) As part of the program, identify all home locations for your employees and also how
they travel to the workplace. It is also useful to identify their normal travel times.
(c) From this information define clusters of staff by location and from this alerts issued
can be for specific areas within Abu Dhabi rather than just general to all staff.
(d) Using this information will also allow more control over how to manage employees
during adverse weather conditions as employers will be able to monitor weather
conditions in specific areas and give real time information to employees on the actions
they should take.
(e) Also consider identifying key roles within the organization as part of managing
employees. This may help to redirect employees to different worksites or projects
based upon their role. As an example there may be administrative assistants or project
managers who are unable to travel due to heavy fog or rain in their area, however
their colleagues are based elsewhere in Abu Dhabi and can travel so can help cover
the role on a project different than theirs until such times as the weather becomes
more manageable.

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Dealing with Adverse Weather Conditions
Version 4.0 – 15 th July 2024 Page 9 of 22
(f) Also consider staff that may be on leave or that work shifts as different
communication may be required.
4.4. Provide Clear Instructions
(a) Within the procedure set clear instructions for each type of weather condition, this
will help reduce confusion and conjecture when adverse weather is a hazard.
(b) As an example, if you state within the procedure that staff should not drive during
heavy rainfall, this statement is open to interpretation as heavy rainfall will mean
something different to people from different countries or cultures. A more precise way
of stating this could be that employees will not drive during heavy rainfall which has
reduced visibility and / or has created flooding on the roads.
(c) Information around adverse weather conditions is available from Abu Dhabi Police
GHQ (General Headquarter) and the National Centre of Meteorology and Seismology
website. Refer to section 5 for information on monitoring weather alerts.
(d) Develop clear guidelines for each adverse weather condition; this will assist
responsible staff when deciding if alerts need to be sent out to all employees.
(e) Table Three below has some information that can be used when deciding what the
risk levels are for different types of adverse weather.

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Weather
Condition
Severity Levels
Insignificant Minor Moderate Major Catastrophic
Fog • No fog or
expectations of fog
• Light fog,
• Could drive with
caution
• minor impact on
workplaces.
• Moderate fog,
• could drive short
distances (no
motorway) with
caution
• Moderate impact on
outdoor activities.
• Heavy-fog
• visibility of less than
100 meters,
• difficult to drive on
all roads
• Major impact on
outdoor activities.
• Very Heavy-fog
• Visibility of less than
30 meters.
Sandstorms
/ Wind
• No Sandstorms and
winds, or
expectations of
occurrence
• Light winds (average
speed 15 km/h – gust
up to 37 km/h) and /
or Sandstorms
• could drive with
caution
• minor impact on
workplaces.
• Moderate wind
(gusts over 38 km/h
up to 49 km/h) and /
or Sandstorms)
• could drive short
distances (no
motorway) with
caution
• Moderate impact on
outdoor activities.
• Strong wind (gusts
over 50 Km/h to 75
km/h) and / or
Sandstorms
• visibility of less than
100 meters
• major impact on
outdoor activities
and buildings
• Very strong winds
(gusts over 75 km/h)
and / or Sandstorms)
• Visibility of less than
30 meters.
Rain /
Flooding
• No Heavy Rainfall /
Floods or
expectations of
occurrence
• Light rain and / or
light floods
• could drive with
caution
• minor impact on
workplaces.
• Moderate rain and /
or moderate flooding
• could drive short
distances (no
motorway) with
caution
• Moderate impact on
outdoor activities.
• Heavy rain and / or
heavy floods
• difficult to drive on
all roads
• visibility of less than
100 meters
• Major impact on
outdoor activities
and buildings
• Very Heavy rain and
/ or very heavy
flooding
• Visibility of less than
30 meters.
Table Three: Possible Severity Levels

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4.5. Pre Storm Preparation
(a) Although adverse weather conditions can change very quickly, preparation prior to
any adverse weather event will help manage these conditions.
(b) As indicated above, employers should monitor the weather forecast carefully to allow
early identification of any adverse weather conditions that may affect their business
and from this information decide what actions may be required.
(c) Consider developing a checklist for different scenarios, identify actions and allocate
responsibility within the organisation to undertake the actions within.
(d) Consider issues such as:
(i) remove lightweight or loose objects from open areas;
(ii) inform staff of foreseeable weather conditions and the actions that may be
required;
(iii) check any external electrical connections or appliances – consider how they will
be managed during adverse weather;
(iv) ensure any large structure (flag pole, crane etc.), trees or large plants are in good
/ stable condition – high winds may cause these to fall or break off large
branches;
(v) check back up power supplies if these are available, for use in case of total power
failure;
(vi) ensure all temporary sheds and roofs are properly secured;
(vii) provide staff with training on what actions to take during adverse weather
conditions;
(viii) ensure chemicals or hazardous materials are secured as per applicable
requirements and Safety Data Sheets (SDS); and
(ix) check and ensure all open doors and windows in the buildings are properly closed
or secured. Storm impact may damage these if left open.
(e) Table Four below shows some of the measures that you should consider during pre-
storm preparation or during adverse weather conditions.

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Weather Conditions
Possible actions for Severity Levels
Insignificant Minor Moderate Major Catastrophic
Fog
• On-going Daily
Monitoring
• Monitor conditions
on an hourly basis
• Projects / buildings
inspected to ensure
all items secured /
tied down.
• Close all windows
• Employees living long
distances advised to
travel later.
• Non-essential driving
/ visits cancelled
• Outdoor activities
reviewed for safety
• Projects / buildings
inspected to ensure
all items secured /
tied down.
• Non slip matting
provided at entrances
/ exits to buildings
• Outdoor electrical
works reviewed to
ensure safety
• Lifting operations
(external) stopped
• All Employees
informed to
delay travel to
office location
• All external
driving / visits
cancelled
• All outdoor
activities
reviewed
• Work at height
stopped.
• Projects /
buildings
inspected to
ensure all items
secured / tied
down.
• Review of travel
requirements for
employees that
need to return
home
• All external work
stopped
Sandstorms / Wind
Rain / Flooding
Table Four: Possible actions for indicated severity levels.

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4.6. Post Storm Hazards
(a) It is important to ensure that following a storm, inspections are undertaken to check
the safety and integrity of any structures or workplaces that may have been affected
by the adverse weather conditions.
(b) Consider developing checklists that can be used to undertake specific inspections for
your premises and allocate responsibility within the organization to undertake the
inspection.
(c) Consider issues including:
(i) loose cladding, guttering, signs, tarpaulins etc. that may fall and cause injury;
(ii) debris on roads which has been blown there;
(iii) sand dunes / patches of sand that may form on exposed roads leading to
accidents;
(iv) blocked air conditioning filters due to large build-up of sand / contaminants;
(v) stability of any installed scaffolding structure like scaffolding toe boards may
have shifted. Make sure scaffoldings are reinspected and provided with
Scafftag;
(vi) any damaged electrical equipment or fittings, opened or flooded cabinets,
flooded electrical rooms, loose connections, wiring etc. with potential of
electrical shock;
(vii) flooded cellars, culverts, underpasses;
(viii) erosion of ground caused by water runoff down embankments (roads, and any
structure built near an embankment may be undercut); and
(ix) large body of water forming on roads or walkways (Driving hazard, pedestrian
hazard);

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5. Monitoring Weather Alerts
(a) At the present time, several applications for monitoring the weather are available in
the marketplace. These applications range from available government websites to
smart mobile phones where information can be accessed in real-time.
(b) It is recommended that the following website is used to gather data and monitor
weather conditions in the Emirate of Abu Dhabi:
(c) National Centre of Meteorology - https://www.ncm.gov.ae
(d) Within this website, comprehensive data can be found on all weather conditions within
the UAE, further alerts are also issued by the Abu Dhabi Police GCHQ.
(e) As part of the procedure, assign responsibility for monitoring alerts and weather
conditions to a member of staff, regular checks should be undertaken and the
information recorded and where required disseminated throughout the organization.

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6. Common Issues
(a) Risk assessments will identify the risks and subsequent controls measures that are
required for the workplace, however below is a list of some of the more common issues
that may be encountered during times of adverse weather and should be considered
by employers as part of their procedure.
6.1. Heavy Rain / Lightning / Flooding
(a) Although rainfall in the UAE is limited, we can experience up to 8 to 10 mm of rain in
one day which can cause occupational safety and health issues within the workplace.
(b) Lightning is a dangerous natural force. Precautions should be taken to prevent
employee exposure to lightning. Employers should recognize lightning as an
occupational hazard. Employers and employees at outdoor worksites should take
lightning safety seriously, especially where work at height is being undertaken.
Employees whose roles involve working outdoors in open spaces, on or near tall
objects, or near explosives or conductive materials (e.g., metal) have significant
exposure to lightning risks.
(c) As part of any adverse weather procedure, consider the following during times of
heavy rainfall or lightning storms:
6.1.1. General:
(a) Issue alerts to all employees in affected areas;
(b) Issue alerts to all projects in affected areas;
(c) Consider using only critical electrical equipment during lightning storms, switch off
non-essential equipment;
(d) Inform employees to stay indoors;
(e) Ensure entrances and exits to buildings are safe and have non slip mats to prevent
ingress of water;
(f) Provide additional cleaning staff at entrance and exit points to buildings where slips
and trips could be a risk due to slippery surfaces caused by rainfall;
(g) Avoid plumbing, including sinks, baths and faucets.
(h) Ensure employees are aware to:
(i) Never lie flat on the ground;
(ii) Never shelter under an isolated tree or metal structure;
(iii) Immediately get out and away from ponds, and other bodies of water; and
(iv) Stay away from objects that conduct electricity (barbed wire fences, power lines,
etc.).

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6.1.2. Driving
(a) Ensure employees are aware of the need to:
(i) Only drive if safe to do so;
(ii) Postpone their journey if not essential until the heavy rain subsides;
(iii) Reduce their speed;
(iv) pull over in a safe place if visibility becomes very poor, until it improves;
(v) not to use hazard lights;
(vi) Ensure tires and windscreen wipers are in good condition; and
(vii) not drive close to other cars, and increase the braking distance.
6.1.3. Construction
(a) Ensure appropriate signage is in place;
(b) Review the use of electrical installations or plant and equipment during heavy rainfall;
(c) Review any activities that involve excavations;
(d) Undertake additional checks of any scaffolding, ladder, heavy equipment etc. that may
become unsafe due to heavy rainfall;
(e) Review the need to undertake outdoor work during heavy rainfall;
(f) Provide staff with appropriate wet weather clothing if working outdoors;
(g) Stop work outdoors during electrical (lightning) storms;
(h) Ensure any chemicals or hazardous materials are secured and covered;
(i) Check temporary roads and pathways to ensure they are safe for use; and
(j) Check any areas where work at height may be undertaken and ensure it is safe to do
so.
(k) Ensure employees are aware of:
(i) The risks of area’s with standing water or that may flood; and
(ii) The need to immediately get off elevated areas such as working platform,
scaffolding, etc during lightning storms;

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6.2. High Winds
(a) High winds can be a common issue within the UAE, with speeds known to reach over
100km/h gusts and with recorded sustained winds at 50km/h.
(b) One of the main risks from strong winds will be to people and loose material which is
at a height, as it is more likely to be exposed and therefore more susceptible to high
winds. Cranes and towers are particularly at risk and could be toppled due to high wind
if not secured correctly. People working at height can be blown to the side, increasing
the chances of them falling if there is insufficient side protection to stop them from
falling. If the wind is strong, there can be a risk of materials such as roof tiles and fast-
moving debris striking a person. Also, the wind can whip up dust and sand which can
damage or irritate eyes, as well as aggravating conditions such as asthma.
(c) Strong winds can also make it difficult to hear properly, so much so that workers may
be oblivious to approaching vehicles if they cannot hear them coming.
6.2.1. General:
(a) Review any work at height and outdoor working when the wind speed reaches or
gusts higher than 38km/h to ensure it is safe to continue. This review should be based
on a risk assessment considering the current and anticipated wind speed, weather
conditions, altitude of work being undertaken and any other conditions (hazards) that
may affect the safety and health of those undertaking the work or affected by the
works.
(b) Issue alerts to employees;
(c) Undertake inspections of buildings and projects to ensure any loose material removed
and items are secured;
(d) Ensure all windows are closed and doors only opened as required (high winds can
easily cause door to break off their hinges);
(e) Remove lightweight or loose objects from open areas;
(f) Stop any lifting operations if wind speed reaches or gusts higher than 38km/h;
(g) Ensure any cranes or lifting equipment is secured;

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6.2.2. Driving:
(a) Ensure employees are aware of the need to:
(i) Only drive if safe to do so;
(ii) Postpone their journey if not essential until the heavy wind subsides;
(iii) Not to drive in high sided vehicles
(iv) Reduce their speed;
(v) Ensure tires and windscreen wipers are in good condition;
(vi) not drive close to other cars, and increase the braking distance; and
(vii) pull over in a safe place if visibility becomes very poor, until it improves;
6.2.3. Construction:
(a) Review any work at height and outdoor working when the wind speed reaches or
gusts higher than 38km/h to ensure it is safe to continue. This review should be based
on a risk assessment considering the current and anticipated wind speed, weather
conditions, altitude of work being undertaken and any other conditions (hazards) that
may affect the safety and health of those undertaking the work or affected by the
works.
(b) Ensure that tools are packed away safely and that roofing sheets, cones, signage and
other loose materials are safely secured;
(c) Ensure temporary or site fencing is securely fixed;
(d) Ensure any chemicals or hazardous materials are secured and covered;
(e) Use extreme caution when picking up large sections of plywood or similar flat
materials, as these can act as a sail;
(f) Ensure employees are aware of the need to:
(g) Use tag lines when hoisting loads with large flat surfaces;
(h) Wear protective gear against falls; and
(i) not stand near stacks of materials and structures.
(j) wear eye protection to keep dust, debris and other foreign particles from blowing into
their eyes;
(k) Ensure hard hats are securely fastened and cannot be blown off their head;

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6.3. Fog
(a) Fog can be particularly dangerous for drivers and workers on a construction site as it
greatly reduces the visibility of everyone. The drivers of vehicles will not be able to
see very far ahead, meaning that they may not be able to react in time if a person or
object is in the roadway. The driver may even drive off the road if they cannot see
where the edge is, increasing the chances of them colliding with something or driving
over the edge of a steep drop. Along with the visibility issues for the drivers, workers
on the ground will also find it difficult to see approaching vehicles and get out of the
way in time.
(b) Fog also causes very hazardous conditions for driving on public roads due to reduced
viability.
6.3.1. General:
(a) Issue alerts to all staff; and
(b) Review the need to travel.
6.3.2. Driving
(a) Ensure employees are aware of the need to:
(i) Consider the need to drive during heavy / dense fog;
(ii) Reduce speeds;
(iii) not use hazard lights;
(iv) If visibility is less than 100metres use high intensity fog lamps;
(v) not tailgate and maintain a gap of at least 4 seconds with the car in front (refer
to note under section 2);
(vi) Be patient, it is better to arrive late than not to arrive at all;
(vii) Beware of drifting fog, density can change quickly, dramatically reducing
visibility; and
(viii) pull over in a safe place if visibility becomes very poor, until it improves.
6.3.3. Construction
(a) Employees should wear appropriate high visibility clothing;
(b) Review heavy lifting activities considering the visibility conditions; and
(c) Audible and visual warnings activated on plant and equipment.

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7. References
•
Khalifia Fund - Safety During Adverse Weather Conditions - Procedure KF/EHS/P-
17 - 2016
•
General Secretariat of the Executive Council Circular No. (1) Of 2016 concerning
the Road Traffic Safety of the Employees in Bad Weather Condition and Poor
Visibility, 28 January 2016.

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8. Document Amendment Record
Version Revision Date Description of Amendment Page/s Affected
4.0 15th July 2024
System acronym updated from OSHAD-
SF to ADOSH-SF to accurately reflect
document title
Throughout
Change from OSHAD to ADPHC
Change of Logo
Change National Centre of Meteorology
and Seismology to National Centre of
Meteorology
Minor editorial changes throughout the
document without changing requirements.