Heat Stress Prevention Procedure

DOCUMENT TITLE:
Heat Stress Management Procedure
ADCO DOC. NO. 30.99.90.1739
PAGE : 2 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
Rev. 02 Date : 20 March 2017
This document is Tecnimont’s property, and cannot be used by others for any purpose, without prior written consent.
CONTENTS
1. SCOPE AND PURPOSE.......................................................................................................4
1.1 Introduction...................................................................................................................4
1.2 Scope ...........................................................................................................................4
1.3 Purpose ........................................................................................................................4
1.4 Project Description .......................................................................................................4
2. DEFINITIONS AND ABBREVIATIONS ................................................................................5
2.1 Definitions.....................................................................................................................5
2.2 Abbreviations..............................................................................................................11
3. REFERENCE DOCUMENTS ..............................................................................................11
4. LEADERSHIP AND COMMITTMENT.................................................................................14
5. HEAT STRESS DEFINITION ..............................................................................................15
5.1 Heat Disorders and Health Effects .............................................................................15
6. ROLE AND RESPONSABILITIES ......................................................................................17
6.1 Construction Director..................................................................................................17
6.2 Contractor Site Managers...........................................................................................17
6.3 Contractor Site HSE Manager....................................................................................18
6.4 HSE Trainer................................................................................................................18
6.5 Subcontractor Site Manager.......................................................................................19
6.6 Subcontractor HSE Manager......................................................................................19
6.7 Contractor/Subcontractors Supervisors/Foreman ......................................................20
6.8 Contractor/Subcontractor HSE Engineers/Officers ....................................................20
6.9 Site Doctor..................................................................................................................21
6.10 Paramedic Nurse........................................................................................................21
6.11 First Aiders .................................................................................................................22
6.12 All Employees.............................................................................................................22
7. WORKPLACE MEASUREMENT AND MONITORING.......................................................22
7.1 Thermal Work Limit (TWL) .........................................................................................22
7.2 Wet Bulb Globe Temperature.....................................................................................23
7.3 Heat Stress Index Monitoring .....................................................................................24
8. PREVENTION OF HEAT STRESS .....................................................................................25
8.1 Work Practice Controls / Planning..............................................................................25
8.2 Rest Areas..................................................................................................................26

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8.3 Provide Acclimatization ..............................................................................................27
8.4 Hydration maintenance and Choice of Fluid Replacement Drinks .............................28
8.5 Drinkable Water supply ..............................................................................................29
8.6 Salt replacement ........................................................................................................31
9. OTHER SPECIFIC CONTROL MEASURES ......................................................................31
9.1 Engineering Controls..................................................................................................31
9.2 Buddy System ............................................................................................................32
9.3 Scheduling..................................................................................................................32
9.4 Work/Rest Cycles.......................................................................................................32
9.5 Self-Determination......................................................................................................32
9.6 Special Considerations during Ramadan ...................................................................32
9.7 Personal Protective Equipment ..................................................................................33
9.8 Working in the Buffer Zone.........................................................................................33
9.9 Administrative Controls...............................................................................................34
10. TRAINING ...........................................................................................................................34
11. ATTACHMENTS .................................................................................................................35
11.1 Attachment 1: RECOGNIZING AND TREATING HEAT STRESS .............................36
11.2 Attachment 2: DEHYDRATION AND URINE COLOUR.............................................38
11.3 Attachment 3: HEAT STRESS SYSTEM AUDIT FORM ............................................39
11.4 Attachment 4: DAILY REST SHELTER INSPECTION...............................................41
11.5 Attachment 5: HSE ASSURANCE AUDIT CHECKLIST.............................................42

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ORIGINATOR No.
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ADCO Project No.
P02065
1. SCOPE AND PURPOSE
1.1 Introduction
Al Dabb’iya Surface Facilities-Phase III Project is located in the Emirate of Abu
Dhabi and has a very hot and humid climate, especially during the summer season
with ambient temperatures exceeding 50°C combined with periods of high relative
humidity. Such climate creates a potentially dangerous environment, especially to
those who are working under direct sun and, in shaded area without climate control
or in a process environment with increased thermal risk (e.g. confined space, heat-
radiating plant/equipment). Associated risk can be further increased if workers are
also wearing protective clothing, which may prevent heat transfer from the body to
the surrounding environment.
1.2 Scope
The procedure shall apply to CONTRACTOR, SUBCONTRACTORS’ employees
and VISITORs having access in any part of the Project area (construction site, lay-
down areas, temporary facilities, utilities and accommodation camp) during the
construction phase up to demobilization of the Site.
The Heat Stress Management Procedure is part of the CONTRACTOR’s HSE
Management System according to statutory legislation and ADCO requirements
including, but not limited to, all of the following:
 UAE Federal Law No. 8, year 1980, “Labour and Social Affairs”, Part V,
“Industrial Safety, Prevention Measures, Health and Social Care for Workers”.
 Ministry of Labour and Social Affairs, Ministerial Order No. 32, year 1982,
“Determination of the Ways and Means to Protect Employees against
Occupational Hazards”.
Further references are listed under the heading: 3.Reference Documents.
1.3 Purpose
The procedure outlines the principle and provides occupational, health and safety
guidelines for implementing an adequate Heat Stress Program for the summer
periods in order to adopt organizational and technical measures to prevent and
minimize heat related illnesses, protecting the worker from heat related illness and
to control heat-related risks. The document addresses also the causes, symptoms
and treatment of Heat Stress.
1.4 Project Description
The Project consists in the Engineering, Procurement and Construction (EPC) for Al
Dabb’iya Phase Facilities Development: CENTRAL PROCESSING PLANT,
GATHERING SYSTEM, EXPORT PIPELINE (OIL and GAS), FLARE SYSTEM,
WATER SUPPLY and DISPOSAL, in Dabb’iya area (Southwest of Abu Dhabi).

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ORIGINATOR No.
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ADCO Project No.
P02065
2. DEFINITIONS AND ABBREVIATIONS
Refer for Definitions and Abbreviations to the Project Communication Procedure
between ADCO and CONTRACTOR, appendix 1 or to the Contractual Document:
General Scope of Work - Doc. No. 02.99.91.0609 Rev 3 - Paragraph 4-
Terminology.
For the purposes of this procedure, the following definitions / abbreviations shall
apply:
2.1 Definitions
PROJECT Al Dabb'iya Facilities Development Phase-III
ADCO Abu Dhabi Company for Onshore Petroleum Operations
(ADCO)
CONTRACTOR Tecnimont S.p.A.
CONTRACT
ADMINISTRATOR
Means a Person in ADCO within the contract sponsor’s
(end-user) division/department, which is responsible for
managing all aspects of the contract. It might be referred to
as (ADCO Representative) as an alternative.
LOWER TIER
SUBCONTRACTOR
Means any person or company of any tier, including but not
limited to, suppliers or vendors of MATERIALS, suppliers or
lessors of SUBCONTRACTOR’s EQUIPMENT and erection
contractors, having a contract with SUBCONTRACTOR or a
LOWER TIER SUBCONTRACTOR for the performance of
any part of the WORKS.
OSBL means Out-Side Battery Limits
CONTRACT The EPC Contract n. 15810.01 entered between ADCO and
CONTRACTOR for PROJECT realization
DOCUMENTS (or
DOCUMENTATION)
Specifications, reports, drawings, etc. produced in the
design of the PROJECT according to CONTRACT
requirements
VENDOR Firm awarded with a Purchase Order by CONTRACTOR to
supply Equipment or Material for the PROJECT
SUBCONTRACTOR Firm awarded with a Subcontract by CONTRACTOR to
provide Services for the PROJECT
Accident An Incident which has resulted in actual Injury and/or
Damage (Loss) to Assets, the Environment, Social
programs, Reputation or to 3rd Parties
Acclimatization It is a long-term adjustment of an individual to a stress. An
acclimatized person can perform many tasks in a hot and
humid work site where a non-acclimatized person cannot
work
Activity Work to be carried out as part of a process, characterized by

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a set of specific inputs and tasks that produce a specific set
of outputs to meet Project requirements
Air Temperature Air temperature is a measure of how hot or cold the air is in
a surrounding area usually expressed in degrees Celsius
(°C).
ALARP Acronym of “As Low As Reasonably Practicable” ALARP is
a demonstration that the risk of a favourite option, are
acceptable and/or comparable to other similar
developments. It requires consideration of all the hard and
soft issues related to the range of options and a judgment
decision with the full knowledge of all the option and their
associated risks and costs. Represents the level or risk
reduction at which the time, trouble, difficulty and cost of
further reduction measures become unreasonable
disproportionate to the additional risk reduction to be
obtained.
Assessment The process of analyzing and evaluating hazards, and
involves causal and consequence analysis, and requires
determination of likelihood and risk
Cause Cause is an event that could result in the release of the
hazard
Conduction It is the transfer of heat between materials that contact each
other. Heat passes from the warmer material to the cooler
material. For example, a worker's skin can transfer heat to a
contacting surface if that surface is cooler, and vice versa.
Convection Convection is the transfer of heat in a moving fluid. Air
flowing past the body can cool the body if the air
temperature is cool. On the other hand, air that exceeds
35°C (95°F) can increase the heat load on the body. The
rate of heat loss from the skin by contact with cold air
depends on the air speed and the temperature difference
between the skin and the surrounding air. At a given air
temperature, heat loss increases with wind speed. However,
the effect of wind speed does not increase at speeds above
64 km/h or 50 mph since the air is not in contact with the
body long enough for more body heat to be transferred to
the air.
Competent Person A person who, because of qualifications and experience,
has the skills necessary to perform the stated duties (In the
case of excavation this is to be a civil engineer with a
minimum of 2 years practical experience in assessing
ground conditions).
Consequence Consequence is the result of the release on the workforce,
local population, or the environment
Employee Any person engaged in activities for the benefit of the

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Project or CONTRACTOR (SUBCONTRACTOR) and who
receives payment, even on a temporary basis. This includes
so called Day Labourers employed by the Project or
CONTRACTOR, SUBCONTRACTORS and LOWER TIER
SUBCONTRACTORS
Employment All work or activity performed in carrying out an assignment
or request of the Project or Contractor, Subcontractor,
including related activities not specifically covered by the
assignment or request. This includes driving to and from a
workplace
Evaporation It is the loss of heat due to the conversion of water from a
liquid to a gas. In terms of human physiology, it is:
 Perspiration/Sweating - evaporation of
water to remove excess heat.
 "Insensible" Perspiration - body sweats
to maintain humidity level of 70% next
to skin. Particularly in a cold, dry
environment, you can lose a great deal
of moisture this way and not notice that
you have been sweating.
 Respiration - air is heated as it enters
the lungs and is exhaled with extremely
high moisture content.
Exposure Hour Exposure hours are the total number of hours worked
including overtime and training but excluding leaves,
sickness and other absences
Fatality (FAT) This is a death resulting from a Work Injury, Occupational or
Illness, regardless of the time intervening between injury
and death
First Aid Case (FAC) A one-time treatment and subsequent observation of minor
scratches, cuts, burns, splinters, and so forth, which do not
ordinarily require medical care. Such treatment and
observation is considered first aid even though provided by
a physician, or registered professional personnel
Good Samaritan Act Is first aid, given in an emergency, by either a trained or
untrained person not designated as a first aid provider by his
employer and whose duties do not normally require
providing first aid
Hazard Hazard is the potential to cause harm, including ill health
and injury, damage to property, products or the
environment, production losses or increased liabilities
Heat Cramps Heat Cramps are painful spasms of the muscles. The
muscles used in doing the work are most susceptible. The
spasms can be caused by too much or too little salt.

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Heat Exhaustion Results when the body cannot cool itself adequately in hot
environments. The skin becomes cool and clammy.
Symptoms include profuse sweating, weakness, dizziness,
nausea, dark urine, and headaches.
Heat Stress A potentially serious condition resulting from strain on the
temperature regulating capacity of the body, caused by
prolonged exposure to high temperatures or other
confounding environmental factors
Heat Stroke It occurs when the body's system of temperature regulation
fails and body temperature rises to critical levels. This
condition is caused by a combination of highly variable
factors, and its occurrence is difficult to predict. Heat stroke
is a medical emergency. The primary signs and symptoms
of heat stroke are confusion; irrational behaviour; loss of
consciousness; convulsions; a lack of sweating (usually);
hot, dry skin; and an abnormally high body temperature,
e.g., a rectal temperature of 41°C (105.8°F). If body
temperature is too high, it causes death. The elevated
metabolic temperatures caused by a combination of work
load and environmental heat load, both of which contribute
to heat stroke, are also highly variable and difficult to predict
Incident An Incident is an unplanned event or chain of events, which
has, or could have caused injury or illness and/or damage
[loss] to people, assets, the environment or reputation
Injury Any injury such as a cut, fracture, sprain, amputation etc.,
which results from a single instantaneous exposure
Lost Workday Case
(LWDC)
A Lost Workday Case is any work-related Injury, which in
the opinion of a project appointed Medical practitioner,
renders the injured person temporarily unable to perform
any Regular Job or Restricted Work on any day after the
day on which the injury was received. In this case “any day”
includes rest days, weekend day, scheduled holiday, public
holiday or subsequent day after ceasing employment. This
definition deviates from OSHA guidance, which considers
restricted work as a lost workday case. A single incident can
give rise to several Lost Workday Cases, depending on the
number of people injured as a result of that incident
Medical Treatment
Case (MTC)
A Medical Treatment Case is any work-related Injury that
involves neither Lost Workdays nor Restricted Workdays but
which requires treatment by, or under the specific order of, a
physician or could be considered as being in the province of
a physician. Medical Treatment does not include First Aid
even if this is provided by a physician or registered
professional personnel
Near Miss An unplanned event which potentially could have caused
Injury or Occupational Illness and/or damage [loss] to

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people, assets, the environment or reputation, has not
caused injury and or damage to assets, to a third party, or to
the environment but had the potential to do so but which did
not.
It is an event that signals a system weakness that if not
remedied could lead to significant consequences in future.
As such a near miss can be seen both an opportunity to
improve safety practice based on a condition and an
incident with a potential for more serious consequence.
In this context “an incident” or “condition” is anything that a
witness views worthy to address to eliminate a potential to
cause harm. By this definition a wide variety of occurrence
are defined as near miss.
These include:
 Unsafe conditions
 Unsafe behaviours/acts
 Minor accident/injuries that had
potential to be more serious
 Events where injuries could have
occurred but did not
 Events where property damage results
 Events where a safety barrier was
challenged
 Events where a process safety function
was challenged
 Events where potential environmental
damage could result
Occupational Illness It is any work-related abnormal condition or disorder, other
than an Injury, which is mainly caused by exposure to
environmental factors associated with the employment. It
includes acute and chronic illness or disease, which may be
caused by inhalation, absorption, ingestion or direct contact.
Whether a case involves a work-related Injury or an
Occupational Illness is determined by the nature of the
original event or exposure, which caused the case, not by
the resulting condition of the affected employee. An Injury
results from a single event. Cases resulting from anything
other than a single event are considered Occupational
Illnesses
Permanent Partial
Disability
Any Work Injury, which results in complete loss, or
permanent loss of use, of a member or part of the body or
any permanent impairment of functions of parts of the body
Permanent Total
Disability
Permanent Total Disability is any work-related injury, which
permanently incapacitates an employee and results in
termination of employment

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Physical Activity It is the physiological movement of a person’s bones and
muscles to produce the actions necessary to perform a
given activity.
Regular Job A Regular Job is one, which has not been established to
accommodate an injured employee. It should be an existing
job or task within the EMPLOYER AND/OR EMPLOYER
PMC or CONTRACTOR’s organization, which the injured
person is deemed competent to perform
Reputation The estimation in which persons or organizations are held;
character; good name
Restricted Workday
Case (RWDC)
A Restricted Work Case is an injury that results in a work
assignment after the day the incident occurred that does not
include all the normal duties of the person’s Regular Job.
The restricted work assignment must be meaningful and
pre-established or a substantial part of a Regular Job
Risk Risk represents the probability that an undesirable event will
occur, combined with consideration given to the severity of
the consequences of the event
Risk Classification Risk classification is a rating system used to represent the
relative risk associated with a particular hazard. For the
Project, the risk rating system shall be as prescribed by Risk
Assessment Matrix
Summer Months (hot period) Restricted Period from June to the September
during which 3 hour work restriction (12 pm to 3 pm) shall be
observed by all workers.
Thermal Work Limit The Thermal Work Limit (TWL), is a measure of the
maximum sustainable metabolic rate under the
environmental conditions being experienced
Third Party Third Parties are persons or organizations, which are not
employed by or contracted to the Reporting EMPLOYER
AND/OR EMPLOYER PMC or CONTRACTOR
Threat Threats are defined as having the potential to cause harm,
including ill health and injury, damage to property, products
or the environment, production losses or increased liabilities
Wet Bulb Glob
Temperature
The Wet-Bulb Globe Temperature (WGBT) is the standard
used to obtain an index to measure heat stress.
Wind Speed Wind speed is a measure of the movement of air past a
stationary object.
Work Method
Statement
A Work Method Statement sometimes referred to as a Safe
Work Method Statement (SWMS) or a Safe Work
Procedure, is a part of a workplace safety plan. It is
predominately used in construction to describe a document
that gives specific instructions on how to safely perform a

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work related task, or operate a piece of plant or equipment.
A work method statement is prepared for each task on a
particular worksite.
Work related Fatality A work-related Fatality is a death resulting from a work-
related injury or occupational Illness, regardless of the time
intervening between injury/illness and death
2.2 Abbreviations
PMC Project Management Consultant
PMT Project Management Team
ACGIH American Conference of Governmental Industrial Hygienist
CPR Cardiac Pulmonary Resuscitation
HAAD Health Authority Abu Dhabi
HSE Health, Safety and Environment
OGP Oil & Gas Producers
PPE Personal Protective Equipment
PTW Permit To Work
SDS Safety data Sheets
TRA Task Risk Assessment
TWL Thermal Work Limit
WBGT Wet Bulb Glob Temperature
WMS (or SWMS) Work Method Statement (or Safe Work Method Statement)
3. REFERENCE DOCUMENTS
The following Reference Documents form a part of this Procedure.
a) UAE, Abu Dhabi Laws & Regulations
Title
Federal Law No. (8) of the year 1980 Regarding UAE Labour Law
AD EHSMS RF – Version 2.1 – 16 April 2013 : Technical Guideline – Safety in the
Heat
b) ADNOC CODES OF PRACTICE (COPs)
Title ADCO Code CONTRACTOR Code

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Management of Contractors HSE ADNOC-COPV1-
04
N/A
Abbreviations, Definitions ADNOC-COPV1-
05 HSE
N/A
Reporting of Serious Incidents to
ADNOC
ADNOC-COPV1-
08
N/A
Food Water Safety & Welfare ADNOC-COPV1-
10
N/A
Training and Competence ADNOC-COPV1-
14
N/A
Occupational Exposure Monitoring &
Health Surveillance
ADNOC-COPV3-
08
N/A
c) ADCO HSE Requirements
ADCO Guidance Notes on Working
Outdoor Under Direct Sun
Version:
10.05.2012
N/A
ADCO HSE Management System
Manual
CPR-HSED-0308 N/A
ADCO Procedure Manual Volume
10 – HSE Part 15: Heat Stress
Management Guidelines
HSED -0002 /
12.2005
N/A
ADCO HSE Procedure Manual 10-4
Management of Contractor HSE
CPR-HSE-10/4 N/A
ADCO Standard HSE Rules &
Conditions for Contractors
N/A
d) G. CORPORATE RISK EVALUATION & MANAGEMENT PROCEDURE
(CREMP)
Technical Guidance - Escape,
Evacuation & Rescue Assessment
ADCO-07-R-03 N/A
Technical Guidance - Task Risk
Assessment (TRA)
ADCO-07-R-14 N/A
e) FEED Dossier

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Project HSE plan 30.99.00.0603 N/A
Health safety & environmental (HSE)
philosophy
30.99.91.0610 N/A
Evacuation escape and rescue
philosophy
30.99.91.0612 N/A
Construction Execution Plan 30.99.91.0613 N/A
Hazardous area classification
schedule
30.99.01.0602 N/A
HAZID / ENVID / OHID close-out
report
30.99.97.0617 N/A
HAZOP report 30.99.97.0618 N/A
HAZOP close-out report for clusters 30.99.97.0620 N/A
HSE action tracking register 30.99.97.0622 N/A
HAZOP close-out report - CPP 30.99.97.0619 N/A
HAZOP close-out report for utilities 30.99.97.0621 N/A
HAZID/ENVID/OHRA report 30.99.97.0616 N/A
Hazard and effects register 30.99.97.0626 N/A
Quantitative risk assessment (QRA)
report
30.99.97.0624 N/A
Health safety and environmental
impact assessment (HSEIA) phase 1
report
30.99.97.0625 N/A
f) ADCO HSE Rules & Conditions for Contractors
2.6.1 App O Mandatory Contractual
Requirements
CRP-HSE-10/4
REV.3
N/A
2.6.2 App U Mandatory Tender
Requirements
CRP-HSE-10/4
REV.3
N/A
g) Other HSE References

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h) CONTRACTOR’s Reference
SITE HSE PLAN P02065.30.99.00.1
642
3844-LZ-PL-GA000100
HSE TRAINING PROGRAM P02065.30.99.00.1
643
3844-LZ-PC-GA000101
REPORTING AND INVESTIGATION
OF ACCIDENTS AND INCIDENTS
P02065.30.99.00.1
647
3844-LZ-PC-GA000105
EMERGENCY RESPONSE PLAN P02065.30.99.00.1
648
3844-LZ-PL-GA000106
PERMIT TO WORK PROCEDURE P02065.30.99.00.1
649
3844-LZ-PC-GA000107
SAFETY TASK ANALYSIS RISK
REDUCTION TALK (STARRT)
P02065.30.99.00.1
671
3844-LZ-PC-GA000129
TASK RISK ASSESSMENT
PROCEDURE
P02065.30.99.00.1
672
3844-LZ-PC-GA000130
OFFSHORE MEDEVAC P02065.30.99.00.1
676
3844-LZ-PC-GA000134
WELFARE STATEMENT AND
PROCEDURE
P02065.30.99.00.1
679
3844-LZ-PC-GA000137
4. LEADERSHIP AND COMMITTMENT
CONTRACTOR’s management (director, Project, site and constructions managers,
department and functional managers) is committed to execute the Plant in a manner
that is uncompromising on issues of health, safety, the environment, and security.
Senior management of CONTRACTOR will personally practice HSE leadership,
demonstrate visible commitment to the Project’s HSE policy and strategic
objectives, and provide resources to foster a Project culture that embraces and
accepts nothing but optimal HSE behaviour.
The management is committed to executing the construction activities with an
emphasis on the necessary care to protect the environment, the prevention of
pollution and continual improvement of the Project environmental performance.
The CONTRACTOR’s management is committed to never, for whatsoever reason,
let that cost, schedule, and any other possible concerns could prevail over HSE
requirements of the Project.
Moreover CONTRACTOR’s management is committed to:

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 Comply with the requirements of all applicable HSE laws and standards.
 Pursue continuous improvement of the HSE management system and the
HSE performances on site.
 Perform training programs and promote the awareness of the personnel at
every level to work in a safe and environmentally responsible manner.
 Assure the co-operation with Public Authorities, ADCO, Suppliers, Local
Communities and other stakeholders on HSE issues.
 Require SUBCONTRACTORs to manage the environmental issues in an
appropriate way, consistently with the requirements of Tecnimont Spa and
ADCO HSE management system.
5. HEAT STRESS DEFINITION
Heat stress is the effect that the thermal environment has on a person’s ability to
maintain a normal body temperature. Physical work generates heat in the body
which must be lost to the environment through sweating and evaporation. A hot or
humid environment makes this more difficult and this can affect both mental and
physical performance. Inability to get rid of body heat adequately may result in heat
illness.
Age, weight, level of physical fitness, level of acclimatization, metabolism, use of
alcohol or drugs, and a variety of medical conditions such as hypertension all affect
a person's sensitivity to heat. However, even the type of clothing worn must be
considered.
Acclimatization is also a casual factor of the heat stress. Acclimatization can also be
lost if a person is not exposed to heat, so workers who have been away on holiday
to a cool area or who are newly arrived in the UAE to work should be given time to
acclimatize before they have to work in the heat of summer.
Acclimatization may be lost in as little as three days away from work.
Minimum acclimatization period in the high heat area varies from 7 to 14 days for a
new worker and 4 days for a worker returning to work after a holiday or long
weekend. This also applies if you change jobs from an office to an outdoor role
during the summer period or spend longer times outdoors than you normally would
do so.
It is difficult to predict just who will be affected and when, because individual
susceptibility varies. In addition, environmental factors include more than the
ambient air temperature. Radiant heat, air movement, conduction, and relative
humidity all affect an individual's response to heat.
5.1 Heat Disorders and Health Effects
a. HEAT STROKE: occurs when the body's system of temperature regulation
fails and body temperature rises to critical levels. This condition is caused by
a combination of highly variable factors, and its occurrence is difficult to
predict. Heat stroke is a medical emergency. The primary signs and
symptoms of heat stroke are confusion; irrational behavior; loss of

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ORIGINATOR No.
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ADCO Project No.
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consciousness; convulsions; a lack of sweating (usually); hot, dry skin; and
an abnormally high body temperature, e.g., a rectal temperature of 41°C
(105.8°F). If body temperature is too high, it causes death. The elevated
metabolic temperatures caused by a combination of work load and
environmental heat load, both of which contribute to heat stroke, are also
highly variable and difficult to predict.
If a worker shows signs of possible heat stroke, professional medical
treatment should be obtained immediately. The worker should be placed in a
shady area and the outer clothing should be removed. The worker's skin
should be wetted and air movement around the worker should be increased
to improve evaporative cooling until professional methods of cooling are
initiated and the seriousness of the condition can be assessed. Fluids should
be replaced as soon as possible. The medical outcome of an episode of
heat stroke depends on the victim's physical fitness and the timing and
effectiveness of first aid treatment.
Regardless of the worker's protests, no employee suspected of being ill from
heat stroke should be sent home or left unattended unless a physician has
specifically approved such an order.
b. HEAT EXHAUSTION: heat exhaustion often begins suddenly, sometimes
after excessive exercise or work, heavy sweating (with fluid and salt loss)
and inadequate fluid and electrolyte intake.
The signs and symptoms of heat exhaustion are headache, nausea, vertigo,
weakness, thirst, and giddiness. Fortunately, this condition responds readily
to prompt treatment. Heat exhaustion should not be dismissed lightly,
however, for several reasons. One is that the fainting associated with heat
exhaustion can be dangerous because the victim may be operating
machinery or controlling an operation that should not be left unattended;
moreover, the victim may be injured when he or she faints. Also, the signs
and symptoms seen in heat exhaustion are similar to those of heat stroke, a
medical emergency.
Workers suffering from heat exhaustion should be removed from the hot
environment and given fluid replacement. They should also be encouraged
to get adequate rest.
c. HEAT CRAMPS: are usually caused by performing hard physical labor in a
hot environment. These cramps have been attributed to an electrolyte
imbalance caused by sweating. It is important to understand that cramps can
be caused by both too much and too little salt. Cramps appear to be caused
by the lack of water replenishment. Because sweat is a hypotonic solution,
excess salt can build up in the body if the water lost through sweating is not
replaced. Thirst cannot be relied on as a guide to the need for water;
instead, water must be taken every 15 to 20 minutes in hot environments.
Under extreme conditions, such as working for 6 to 8 hours in heavy
protective gear, a loss of sodium may occur. Recent studies have shown
that drinking commercially available carbohydrate-electrolyte replacement
liquids is effective in minimizing physiological disturbances during recovery.

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ORIGINATOR No.
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ADCO Project No.
P02065
d. HEAT COLLAPSE ("Fainting"): in heat collapse, the brain does not receive
enough oxygen because blood pools in the extremities. As a result, the
exposed individual may lose consciousness. This reaction is similar to that of
heat exhaustion and does not affect the body's heat balance. However, the
onset of heat collapse is rapid and unpredictable. To prevent heat collapse,
the worker should gradually become acclimatized to the hot environment.
e. HEAT RASHES: is the most common problem in hot work environments.
Prickly heat is manifested as red papules and usually appears in areas
where the clothing is restrictive. As sweating increases, these papules give
rise to a prickling sensation. Prickly heat occurs in skin that is persistently
wetted by un-evaporated sweat, and heat rash papules may become
infected if they are not treated. In most cases, heat rashes will disappear
when the affected individual returns to a cool environment.
f. HEAT FATIGUE: A factor that predisposes an individual to heat fatigue is
lack of acclimatization. The use of a program of acclimatization and training
for work in hot environments is advisable. The signs and symptoms of heat
fatigue include impaired performance of skilled sensor motor, mental, or
vigilance jobs. There is no treatment for heat fatigue except to remove the
heat stress before a more serious heat-related condition develops.
6. ROLE AND RESPONSABILITIES
6.1 Construction Director
The CONTRACTOR Construction Director has overall responsibility to ensure full
compliance with requirements described in the present procedure.
He is responsible for ensuring compliance with the regulatory and contractual
obligations and the overall implementation of this plan by providing all the required
resources to reduce heat stress related risk onsite.
It shall be his responsibility to:
 Ensure adequate resources for maintaining the plan and programs that are
conducive to reducing heat stress risks. This includes but not limited to
provision of drinking water supply at work site and camps, provision of
replenishment drinks, provision of balanced diet to combat heat related risks.
 Verify the implementation of this procedure and provide a prompt correction
for any possible deviation.
 Demonstrate his commitment to safety and health and follow up’s to correct
any uncontrolled hazards identified.
6.2 Contractor Site Managers
It shall be responsibility of site managers to:
 Establish rest areas to reduce the risk of heat stress and related injuries.
 Establish cooling stations (cool rooms) for immediate treatment of employees
showing symptoms of heat stress.

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 Establish weather monitoring points on site and communication system for
harsh weather conditions.
 Decide and inform on work/rest cycle to workers from time to time considering
the climatic conditions and other regulatory requirements
 Supervisory staffs under their controls area monitoring heat stress flag system
and implementing work rest schedule.
 Carryout work place inspection and audit to ensure that heat stress procedure
and programs are effective established, implemented and maintained in their
concern area.
 All employees working under their control under heat stress training and are
equipped with water bottle provided to them.
 Plan and execute work to ensure that workers exposure to direct sunlight are
eliminated/ reduced.
6.3 Contractor Site HSE Manager
CONTRACTOR Site HSE Manager shall be responsible for:
 The continuous monitoring of the implementation of this procedure, reporting
violations and/or noncompliance issues to Project Management for immediate
corrective action.
 To continuously monitor the implementation of this procedure, report violations
and/or noncompliance issues to Project Manager for immediate corrective
action.
 Assist Supervision team to plan and coordinate the work effectively and
implement the requirements of this procedure.
 Organize daily monitoring of the temperature, humidity, and other variables
necessary to foresee the heat stress index, to promptly communicate this
information to all Subcontractors and Contractor’s supervisors on site, to
ensure that supervisors will organize the daily work activities consequently
(respecting the work period, the stop and the evacuation to cool areas.
 Investigate all heat related injuries, prepare the report and submit to the
ADCO.
6.4 HSE Trainer
 Develop Heat stress Campaign to bring awareness to all employees
 Conduct refresher heat stress training to all employees including
subcontractor and visitors.
 Review and revised Heat stress training modules as per current project heat
stress management programs for Supervisory Staff & Workers, conduct
training on site, covering all site Staff & Workers to recognize heat stress
symptoms and to control heat exposure.
 Train supervisory staffs to develop skills to recognised heat stress signs and

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ORIGINATOR No.
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ADCO Project No.
P02065
symptoms.
 Assist the Site HSE Manger in the heat Stress Management Campaign & its
prevention to all employees. Training should be conducted in language(s)
understood by the worker.
6.5 Subcontractor Site Manager
The SUBCONTRACTOR Site Manager he has the overall responsibility for the
verification of compliance with this procedure.
He shall demonstrate his commitment to safety, health and environment by
providing the competent personnel, by establishing and enforcing all engineering-
organizational measures and any other facilities, tools and resources necessary to
efficiently implement, administer and enforce this procedure.
He shall also ensure that:
 His personnel, included LOWER TIER Subcontractor have attended the
training provided and understood the importance of complying with the
requirements of this procedure.
 Supervisors and superintendent/foreman can communicate without language
barrier with their workforce and deal thoroughly with their roles and
responsibilities.
6.6 Subcontractor HSE Manager
 SUBCONTRACTOR HSE Manager is responsible for the continuous
monitoring of the implementation of this procedure, reporting violations and/or
noncompliance issues to Project Management for immediate corrective action.
He shall:
 Provide timely advice, support and assistance to Responsible Line Manager or
Supervisors in the implementation of this procedure.
 Ensure the Thermal Work Limit is being identified and communicated to all
personnel.
 Monitor compliance to this procedure and report effectiveness/deficiency of
this procedure implementation to senior management.
 Ensure that personnel dedicated to Medical Facility (paramedic, nurse, first-
aiders) are in possession of valid professional certificates as per Local
Authority Requirements.
 Investigate if any of the workers have chronic medical condition (e.g. high
blood pressure, obesity) or requires the use of certain prescription drugs
(consult a doctor) and therefore ensure medical clearance for work in heat
 Train the workers to recognize the signs and symptoms of heat stress and
measurement of heat strain (oral temperature, heart rate recovery etc.).
 Ensure that First aid responders and an emergency response plan shall be in
place in case of a heat-related illness.
 Collaborate with CONTRACTOR Site HSE Manager in conducting

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ORIGINATOR No.
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ADCO Project No.
P02065
Investigation of any heat-related incidents
6.7 Contractor/Subcontractors Supervisors/Foreman
They shall be thoroughly familiar with this procedure and with their individual
responsibilities regarding its implementation and enforcement.
They are request to:
 Ensure that persons under their control are aware of and comply with the
controls in this procedure.
 Communicate the appropriate work zone controls to personnel and ensure
they are followed.
 Ensure that applicable work schedules comply with this procedure.
 Monitor personnel for the signs and symptoms of heat illness.
 Implement additional controls as needed for managing heat stress.
 Conduct a review of any heat illness related incidents and the effectiveness of
existing control measures as required.
 Implement engineering controls and preventive measures, where applicable
 Ensure adequate amounts of cool drinking water is provided and maintained
close to the workplace and encourage worker to maintain adequate fluid
intake.
 Provide workers with appropriate clothing and personal protective equipment
 Allow workers to self-pace where applicable and take rests when they can to
cool down.
 Provide adequate sheltered rest areas and implement a work rest regime as
and were required
 Allow non-acclimatized workers (new arrivals or workers returning from
vacation) time to acclimatize for 5-7 days before starting hard work in a hot
environment in summer and assigning to appropriate tasks and close
monitoring of new arrivals. Before working in hot conditions, pre-placement
training (safety induction) shall be given.
 Rescheduling of the hot or heavy strenuous tasks for the coolest part of day,
assigning of extra workers to high demand tasks, and using a wide variety of
work-aiding devices such as power tools, hoists, cranes, or lifting aids to
reduce the body’s work load.
 Keep in contact with the Site HSE Manager and his staffs in order to interrupt
the work in case of extreme weather conditions are communicated.
6.8 Contractor/Subcontractor HSE Engineers/Officers
They shall:
 Assist the site construction team by providing information through regular
communication
 Shall monitor heat stress management program on daily basis.

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ORIGINATOR No.
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ADCO Project No.
P02065
 Shall carryout rest shelter inspection and highlight shortfall identified to
immediate correction.
 Shall monitor employees at risk and general workforce for sign and symptoms
of heat stress and intervene immediately.
 Check resources provided for heat stress are in place, effectively utilized and
lapses are corrected.
6.9 Site Doctor
Properly manage the Medical Facilities and resources allocated, either in the site
(construction area), lay-down facilities and accommodation camp, in order to:
 Ensure that medical provisions and equipment are adequate and supplied,
including the ambulance which shall be in a serviceable state and ready to
respond to any medical emergency.
 Provide for promptly activation medical evacuation in case of any person
suspected of suffering heat stroke.
 Participate, whit CONTRACTOR Site HSE Manager in training program on
“Heat Stress Prevention” to all employees.
 Ensure the subordinate Paramedics and nurses and ambulance drivers are
trained in the requirements of primary medical emergency response and
familiar with the project conditions.
 Reported any case immediately to CONTRACTOR Site HSE Manager.
 To attend to routine and emergency medical cases as and when required.
 Regularly audit supplies of medicines and dressings to check they are
maintained at adequate levels. Regularly audit medical equipment of the
Medical Centre, including the ambulance to ensure they are in a serviceable
state and ready to respond to any medical emergency.
6.10 Paramedic Nurse
 Consult with the Doctor on the medical cases under treatment, and any trends
developing
 Regularly audit supplies of medicines and dressings to check they are
maintained at adequate levels.
 Shall check and ensure that emergency equipment’s to deal with heat stress
are adequately supplied and readily at hand.
 Regularly audit medical equipment of the Medical Centre, including the
ambulance to ensure they are in a serviceable state and ready to respond to
any medical emergency.
 Shall regularly visit site to check existing access and egress and shall be
familiar with the traffic route

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ORIGINATOR No.
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ADCO Project No.
P02065
6.11 First Aiders
They are responsible for providing the initial management of a victim’s heat stress
and reporting the incident as per the Incident Investigation and Reporting
Procedure.
6.12 All Employees
All employees have a responsibility to protect themselves and others. Ensure they
are well rested, hydrated and fit for work when turn up for duty on daily basis. They
need to ensure that their physical limitations do not increase the risk of heat-related
illnesses. Employees shall report any previous conditions like little rest or influence
of other medications before the starting of shift to their supervisor/ medical personal
at site.
Employees shall attend training session as and when instructed. They shall use all
the resource provided to them to manage heat stress.
Employees shall not misuse anything provided to safeguard from heat stress illness
and injury and safety in general.
Employees shall notify directly any lapse in arrangements for managing heat stress.
7. WORKPLACE MEASUREMENT AND MONITORING
There are many methods for evaluating the hazard due to conditions of heat stress.
The American Conference of Governmental Industrial Hygienists, ACGIH, publishes
a method known as the Wet Bulb Globe Temperature Index (WBGT) & The Thermal
Work Limit (W/m2), which has been adopted by HAAD and recently introduced heat
stress measure will be used more widely across the emirate of Abu Dhabi during the
summer period.
7.1 Thermal Work Limit (TWL)
It gives a measure of the maximum safe work rate for the conditions (the maximum
rate at which heat can be lost to the environment at some specific conditions). If
TWL is too low then even low rates of work cannot safely be carried out
continuously.
TWL, measured in watts per square meter is the maximum rate at which heat can
be lost to the environment in the conditions. TWL is calculated from environmental
parameters assuming that workers are well hydrated and acclimatized to the
conditions and are self-paced.
To determine TWL the following must be measured:
Parameter Unit
Dry Bulb Temperature (ambient air temperature) °C
Wet Bulb Temperature (determined by the
humidity/evaporation)
°C
Globe Temperature (determined by the radiant heat) °C
Wind speed m/s

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PAGE : 23 of 43
ORIGINATOR No.
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ADCO Project No.
P02065
Alternative instruments can be used to take the measurements which can then be
entered into the online TWL calculator.
TWL online calculator:
http://www.haad.ae/Safety-in-Heat/Default.aspx?tabid=63
Working Zones:
The thermal environment can be classified on the basis of TWL into the following
working zones (ref. HAAD)
Figure 1 – TWL and Working zones
7.2 Wet Bulb Globe Temperature
The American Conference of Governmental Industrial Hygienists (ACGIH) has
developed a method of assessing heat stress risk based on a Wet Bulb Globe
Temperature (WBGT). As measured by the Wet Bulb Globe Temperature (WBGT)
the preferred index is a weighted sum of Wet-Bulb, Dry-Bulb and Globe
Temperature, indicates relative comfort.
Wet Bulb Globe Temperature (WBGT) should be calculated using the formula
below.
For outdoors with a solar load, WBGT is calculated as
WBGT = 0.7WB + 0.2GT + 0.1DB
Where: WBGT = Wet Bulb Globe Temperature Index
WB = Wet-Bulb Temperature
DB = Dry-Bulb Temperature

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 24 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
GT = Glob Temperature
7.3 Heat Stress Index Monitoring
It shall be the CONTRACTOR Site HSE Manager decision in line with local
regulatory requirements as to the methodology to be put in practice for the
monitoring temperature, humidity or other related variables necessary in calculating
the heat stress index and the associated hazardous tier/thresholds. However,
calculating and managing work according to the TWL is now required by the United
Arab Emirates Environment, Health and Safety Management System (EHSMS).
Portable heat stress meters or monitors are used to measure heat conditions. Direct
read instruments that can provide dry bulb temperature, wet bulb temperature,
globe temperature and wind speed can be taken through the anemometer. Units
must be converted to Centigrade and meters per second.
If the direct reading is not available from the unit, the below mentioned alternative
measurement method can be used:
 Enter the dry bulb temperature, wet bulb temperature, globe temperature and
wind speed into the online calculator.
 Obtain the TWL work zone indicated by the calculator.
 Communicate the TWL work zone information to Contractors/Subcontractors
HSE & Management personnel.
Site Clinical personnel or personnel formally assigned by CONTRACTOR /
SUBCONTRACTOR Site HSE Manager as responsible persons for the heat stress
temperature monitoring process during the Summer Months or Hot Period.
They have to be instructed as to how to conduct the exact readings of the
instrumentation, how to record the measures, according to which frequency, how to
notify Site Management and Supervision in case heat stress temperature/index
reaches hazardous value.
Reading will be taken at Intervals determined with consideration of the working
schedule and activities and shall be communicated to all
Contractors/Subcontractors HSE and Field Supervisors through the SMS or other
suitable means of communications so that flags are changed accordingly and work
and rest break followed properly. Further communication to the Subcontractors Field
Supervision is the responsibility of Subcontractors HSE and Site Management.
Subcontractor must set-up own facility to monitor TWL index in addition to site
facility in remote location worksites during the Summer Months or Hot Period and
relevant to the work activities being conducted. These devices shall be used by the
work supervisor to measure the heat index rating at the scheduled times for that
location.
In order to communicate the severity of heat related risks to the workers, a 3 colour
flag system is adopted:

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DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 26 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
Thermal Work Limit Zones and Interventions for Management of Work
Note: These requirements relate to workers in areas of exposure as defined by UAE
Directive.
8.2 Rest Areas
SUBCONTRACTORS shall provide adequate number of sheltered cool rest areas in
open yard. There is no conclusive information available on the ideal temperature for
a rest area.
The rest area should be as close to the workplace as possible in proximity of water
dispenser.
Ventilation
Adequate ventilation shall be provided to reduce heat stress by increasing the air
flow and velocity within the work area (as long as the air temperature is less than
the person’s skin temperature).
In enclosed work areas, buildings and premises, consideration shall be given to
improve general ventilation by provision of portable equipment for forced ventilation.
Temporary Shade
Temporary shade shall be provided to work areas (where practicable) to reduce
radiant heat energy from sunlight and provide comfort to workers. Reflective
material shall be used to provide shading when working in high heat absorbing
areas like excavation and piping etc.

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ADCO DOC. NO. 30.99.90.1739
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ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
Rest Shelter
Subcontractors shall arrange and install suitable Nos. of rest shelters (to
accommodate 50% of the workforce on their rest cycle at any time) with provision of
water and electrolyte replenishment for all work activities which are conducted in the
direct sunlight. The rest shelters shall be located within 30 meters work activity at all
times and equipped with the following:
 Suitable solid roof for sun shade Supplied with large fans for cooling and air
flow
 20 or 40 liters drinking water containers and Electrolyte drinks
 Establish communications system (e.g. whistle etc.) to remind workers to drink
water at regular intervals and to announce the beginning of a rest period.
 Radio or mobile to communicate emergency situations to Emergency
Response team
 Benches for sitting
 Display board with notice to highlight heat stress campaign, urine color charts,
flag color charts and general worker precautions during exposed work
Cooling Stations
An adequate Cooling Stations at construction site to deal with the heat stress
victims shall be provided.
The following are the minimum requirements for Cooling Stations at workplace:
 The cooling station shall not be locked during working hours.
 The cooling station shall be controlled by the area supervisor in coordination
with HSE officer.
 The ideal temperature to be maintained at cooling station would be 20 degree
Celsius.
Each cooling station shall be equipped with
 Air Condition Units.
 Water barrels containing ice and water for soaking neck towels, arms, sleeves
etc.
 First aid kit
 Means of communication like radio, Cell phone, as applicable to communicate
site emergency response team
 Log sheets shall be kept and maintained by the site doctor or male nurse in
cooling stations to record history of workers encountered heat stress
problems.
Note: HSE Department shall prepare and update location map for rest shelters and
cooling station on regular basis and communicate it to the Emergency response
teams.
8.3 Provide Acclimatization
People who are not sufficiently acclimatized to the heat may experience transient
heat fatigue resulting in a decline in performance, coordination or alertness. They

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ORIGINATOR No.
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ADCO Project No.
P02065
also become irritable or depressed. This can be prevented through gradual
adjustment to the hot environment. The body shall be allowed to adjust to the hot
environment.
On the first day in a hot environment, a person should perform about 50% of the
normal workload.
The workload in the hot environment should be increased by 10% each day on each
succeeding day. Full acclimatization shall be considered as one week.
A recommended acclimatization schedule for both acclimatized and non-
acclimatized workers is provided below.
Workers with previous
exposure to hot
environments - acclimatized
Workers without previous exposure to
hot environments – non-acclimatized
Day 1 – 50% exposure
The work supervisor shall be responsible to implement the acclimatization process
for his work force and reduce the physical demands of the job for first week of
employment, with the intensity of work increasing from a low level to the expected
level in a series of reasonable increments.
Each sub-contractor shall also have a system in place which identifies new workers
and verifies the tracking of the acclimatization process.
8.4 Hydration maintenance and Choice of Fluid Replacement Drinks
Dehydration is a major factor in most heat disorders. At high temperatures, the body
can lose more than one liter (32 oz) of water per hour through sweating. Prior to
start of each shift there must be made available cool potable water for drinking. The
amount required to be available depends on the work zone controls in effect.
Water is the best fluid to maintain proper body hydration. Intake of sports drinks is
allowed as a supplement to water in moderation. Care must be taken that no more
two sports drink (32 oz) per person is consumed per shift. It is necessary to drink a
glass of water every 20-30 minutes for heavy sweating. HAAD general guide is 2
litres every 2-3 hours. If workers are sweating heavily between meals, an electrolyte
replacement drink is recommended.
Too much salt can cause higher body temperatures, increased thirst and nausea.
Workers on salt-restricted diets should discuss the need for supplementary salt with
their doctor.
Consumption of soft drinks as the sugar content is high or consume low calorie soft
drink which contains reduced or no sugar to be limited. Limit consumption of
caffeinated drinks (coffee, tea, cola) and „energy drinks, as caffeine may reduce
fluid retention or consume decaffeinated or green tea that contains low caffeine.
The table below shows the fluid intake required to replace sweat at different
workloads and conditions.

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ORIGINATOR No.
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Coffee, soda and other caffeinated beverages are discouraged as caffeine
contributes to dehydration.
Alcoholic beverages and energy drinks are not allowed on sites and must not be
consumed a minimum of 8 hours prior to the commencement of work on site.
Testing the urine colour is a good indicator of dehydration. This table will be
displayed in all toilet facilities. (Refer to Attachment 2).
8.5 Drinkable Water supply
CONTRACTOR and SUBCONTRACTORS shall provide cool, fresh water to all
locations in volumes that exceed local water usage levels at all times within 50
meters of the work locations on the construction Site as well as road maintenance
area by considering the following:
 No Water, No Work shall be adopted.
 Drinking water shall be stored in clean tanks, properly disinfected, and

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 30 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
insulated such to avoid excessive temperatures.
 Sufficient no of chillers connected with drinking water supply line shall be
installed at all suitable locations.
 Sufficient no of drinking water stations shall be erected in addition to the
chillers. Ice water and cool water shall be supplied to all station.
 Suitable signage of “Drinking Water” using the applicable languages as
spoken on the site i.e. English, Arabic etc. shall be displayed near the drinking
water points and chillers.
 All workers must be issued with a personal water bottle and this must be with
them on the job site. If a worker does not have a personal water bottle with
him, he may be removed from the work area.
 2 Ice Machines with individual capacity of 400 kg/day shall be installed on site
to provide ice for water station igloos and water tanker. Designated group
shall be deployed to produce as well distribution of ice in designated areas.
Ice must be produced and handled in accordance with food safety standards.
An adequately insulated water tanker (s) marked “Drinking Water” may also be used
to transport and refill the water igloos and/or bottles at all required locations on
hourly basis. The truck will have a planned delivery schedule, designated driver,
water handler and a delivery log check sheet shall be maintained.
Drinking Water Supply Team
A dedicated team shall be designated for drinkable water supply to the containers
through water trucks and they are responsible for
 Storing and dispensing water in clean, clearly labeled [Drinking Water Only]
containers which shall be kept in shaded areas.
 Seal the containers with adhesive tape to avoid mixing of sand and write time
of delivery of the water on the tape.
 Place the refilled containers to the designated locations and informed relevant
Supervisors. Personnel designated for filling water tankers, containers, and in
ice production shall meet food standard hygiene requirements in respect to
personal health checks.
 To maintain the quality of drinking water, the Contractor shall arrange the
water analysis and testing to comply with HSE Code of Practice ADNOC-
COPV3-07, which specifies the Drinking Water acceptable parameters to
maintain the Bacteriological Chemical and Aesthetic Qualities.
 Dedicated heat stress supervisors shall be assigned to monitor the entire
process as discussed above in their respective areas.
Job tasks/activities will not be initiated unless adequate supplies of cool drinking
water are in close proximity of the work area. Job activities will cease if adequate
cool water is not available to workers in close proximity to the work area until water
is made available.
The Area Supervisor and Field Safety Officers are responsible for assuring that
adequate cool drinking water is available in all their work areas.
There is no optimum temperature of drinking water, but most people tend not to
drink warm or very cold fluids as readily as they will cool ones. Whatever the

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 31 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
temperature of the water, it must be palatable and readily available to the worker.
Individual drinking cups should be provided-never use a common drinking cup.
CONTRACTOR & SUBCONTRACTOR SHALL ENSURE THAT EVERY
WORKERS WILL BE PROVIDED WITH WATER BOTTLE (THIS BOTTLE SHALL
BE IDENTIFIED WITH THE NAME OF THE OWNER WITH A PERMANENT
MARKER AND IT SHALL BE REPLACED WHEN THE PREVIOUS ONE IS
BROKEN OR and on a FAIR WEAR AND TEAR BASIS.
PERSONAL WATER BOTTLES SHALL ALWAYS BE KEPT AT THE WORK
LOCATION OR IN THE NEAREST SHELTERED REST AREA. IT IS FORBIDDEN
TO DRINK USING BARE HANDS DIPPERS OR SHARED DRINKING VESSELS.
Recyclable Plastic Water Bottles shall not be used in construction areas.
8.6 Salt replacement
Sweat not only contains water, but salt and other electrolytes. Acclimatized worker
loses relatively little salt in their sweat and, therefore, the salt in the normal diet is
usually sufficient to maintain the electrolyte balance in the body fluids.
For not-acclimatized workers who may sweat continuously and repeatedly,
additional salt in the food may be used. NEVERTHELESS Salt Tablets are NOT
permitted without the approval of a DOCTOR. Salt does not enter the body
system as fast as water or other fluids. (Electrolytes or Flavouring may be used in
waters containers. provided they are clearly marked).
9. OTHER SPECIFIC CONTROL MEASURES
9.1 Engineering Controls
 Controlling the heat at its source through the use of insulating and reflective
barriers.
 Providing cool work areas.
 Increasing air movement, if temperature is less than 35°C (fans). If the air
temperature is above 35°C, using fans will not be effective in lowering air
temperature and should not be used.
 Reduce physical demands of task through mechanical aid (hoists, lift, etc.).
 Other variety of engineering controls can be introduced to minimize exposure
to heat. For instance, improving the ventilation or air blowing while hot work is
being carried out in to a confined area. In general, the simplest and least
expensive methods of reducing heat and humidity can be accomplished by:
 Providing cross ventilation in hot work areas;
 Using fans in locations where cross ventilation is not possible;
 Using other methods of creating airflow such as exhaust ventilation or air
blower.
 Provide air conditioned rest areas or Desert coolers where feasible
 Reduce physical demands of task through mechanical assistance
Rev 2

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 32 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
9.2 Buddy System
Lone working shall not be allowed. All workers shall be closely supervised or work in
pairs or small teams which allow appropriately trained workers to observe each
other for signs of heat-related disorders. Supervisor/ Foremen shall never allow lone
worker and Site HSE shall monitor for the same.
9.3 Scheduling
Potentially hot jobs shall be performed when heat stress conditions are at their
minimum by developing practical schedule and allocating the work to the cooler part
of the day. The daily work schedule is to be posted in the heat stress shelters and
notice boards in multiple languages.
Total daily work hours not to exceed 8 hours for the period 15th June – 15th Sept
and No work is to be carried out in direct sunlight from 12:30 to 15:00 for the period
15th June – 15th Sept.
Note: Travel time to the work place must be taken into account when planning work
breaks particularly on return to the work site after midday during the hot season.
Empoyees transportation vehicles must be equipped with air conditioning and must
be in good working condition..
9.4 Work/Rest Cycles
Prescribed periods of work and rest are based on specific TWL values and flagging
system as mentioned in this plan. Workload estimates are to be based on these
prescribed levels and to take into account whether the nature of work is repetitive,
controlled, and continuous over an eight-hour shift, and that the rest area is in an
environment similar to that in which the exposure occurs.
9.5 Self-Determination
Appropriately trained workers can monitor their own heat condition. Heat Stress
Training shall emphasize that heat stress can affect an individual’s ability to reason
clearly. This may cause them to fail to recognize signs and symptoms of heat
stress. For this reason, self-determination needs to be augmented by the heat
awareness program, worker training program, check time and buddy system
controls described in these guidelines.
9.6 Special Considerations during Ramadan
During the month of Ramadan, Contractor employees and Subcontractor personnel
who fast may be at increased risk of heat-related illnesses. Even though working
hours are reduced during this period, individuals who are fasting and at the same
time working in a hot environment may experience difficulty in adjusting
(acclimatising) to the changed environment. The following requirements and
recommendations are applicable during this period (in addition to the general
requirements):
 Fasting workers shall be provided with separate Ramadan shelter where
drinking water shall be not be kept, with adequate sitting arrangements and
Rev 2

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 33 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
provision for mist fan.
 Workers must ensure that they get adequate rest at the end of each day, and
obtain at least eight hours of sleep per night before commencing work the
following day.
 While on duty, supervisors must provide frequent rest periods and ensure that
workers utilize them.
 Workers must ensure adequate hydration before and after the fasting period
each day.
 Workers with known medical conditions must consult a physician for clearance
before working while fasting.
 Under normal conditions the body loses 2.5 liters of fluids a day. While
performing strenuous work in a hot environment, the body may lose over 5
liters of fluids over the course of the working day. If profuse sweating is
observed during the day while at work, and significant weight loss is noted,
medical attention should be sought. At the end of each fasting period, slowly
hydrate with water until adequate weight is achieved.
9.7 Personal Protective Equipment
Recommended protective clothing are loose fitting clothes made of light cotton allow
sweat to evaporate and transfer heat better than tight fitting synthetic fibres. Light
summer clothing shall be worn to allow free air movement and sweat evaporation.
The Contractor shall encourage the use of 100% cotton work uniforms for hot and
humid environments. In addition, Contractor and Subcontractor shall provide the
following personal protective equipment (PPE) to their respective employees
working in hot environments:
 Protective clothing
 Cooling vests (when applicable, for very hot environments)
The Contractor shall also encourage the workers to dampen terry cloth coveralls or
two-piece, whole-body cotton suits during hot environment which is a simple,
inexpensive personal cooling technique that is effective when reflective or other
impermeable protective clothing is worn.
 Vapour barrier clothing, such as chemical protective clothing, greatly
increases the amount of heat stress on the body, and extra caution will be
necessary
 Arm protection sleeves for enhanced cut protection can be obtained for use in
hot weathers
 Long sleeves and long trousers (coveralls) should be worn in hot conditions
and as a general rule to protect generally on construction sites.
9.8 Working in the Buffer Zone
TWL is between 115 and 140 W/m2. Anything more than light work may lead to
heat accumulation and illness if continued for too long.
 All possible measures must be taken to increase TWL to above 140 W/m2 e.g.

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 34 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
ventilation, shade, shielding, cooling, PPE, etc.
 Work may still be carried out but work-rest cycling and increased fluid intake
may be required. Use the technical information sheets Work-rest cycling –
sample schedules and Fluid requirements for working in heat a guide
 No employees that are not acclimatised may work in this zone
 Rotate workers if possible
 No lone or isolated workers
 Dehydration test at shift end recommended
9.9 Administrative Controls
 Increase the frequency of length of rest breaks
 Provide cool drinking water near workers and remind them to drink a cup
every 20 minutes
 Make sure everyone is acclimatized
 Increase awareness and train workers to recognize the signs and symptoms
and street buddy system
 Workers with medical conditions should discuss with their doctor regarding
working in hot environments
 First aid responders and ERP should be in place in the event of heat related
illness
 Investigate any work related incidents
10. TRAINING
Awareness level training must be provided to all personnel. The purpose of this
training is to provide information and education related to the risk factors and signs
of heat stress. As a minimum, the training topics must enable the individual to
understand the following:
 Knowledge of the hazards of heat stress
 Recognition of predisposing factors, danger signs, and symptoms
 Awareness of first-aid procedures for, and the potential health effects of, heat
related illness
 Employee responsibilities in avoiding heat stress
 Dangers of using drugs, including therapeutic ones, and alcohol in hot work
environments
 Use of protective clothing and equipment
 Importance of fluid replenishment
 Importance of self-monitoring and limiting work activities
 Identifying personal risk factors that are contributing to heat related illness
Rev 2

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 35 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
 Usage of protective clothing
 Process of acclimatisation
 Responsibilities and how to recognize the effects of heat stress in themselves
and others.
 The influences of a healthy lifestyle and non-work activities on heat stress
factors.
 The effects of medical conditions, rest, and drugs and alcohol.
 The effect of personal protective equipment on heat stress factors.
 The controls in place for each work zone to managing heat stress factors.
 The responsibility to use off hours effectively and present fit for work and
hydrated when the work shift begins.
 Ensure all workers are aware of the necessary emergency response contact
details / numbers.
All training records shall be maintained at site offices.
Personnel identified for inclusion in this program shall receive a minimum of 1 hour
of initial -instructions pertaining to his role / requirements in the program
Appropriate refresher training thereafter shall be organized also for
SUPERVISORS. The purpose of the training is to provide the skills and information
to implement heat stress management principles in the daily operation of their
assigned duties. This training will also assist supervisors to recognize and manage
heat stress risks with their direct reports.
Safety Alert shall displayed on all notice boards and discussed in Site Tool Box
Talks without any Failure.
All suspected cases of heat injury are to be transported immediately to the nearest
first aid station for evaluation and possible treatment.
Commitment
All Employees must comply with the appointed work/rest cycles to ensure they
recognize, and are ready to follow the schedule; otherwise the employee will be
treated with Project disciplinary program.
11. ATTACHMENTS

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 36 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
11.1 Attachment 1: RECOGNIZING AND TREATING HEAT STRESS
HEAT RASHES
Heat rash is a skin irritation caused by excessive sweating during humid weather or with prolonged use of heavy or
chemical protective clothing. This will create discomfort and itching to the victim
Signs and symptoms Treatment (First aid) Prevention
Signs and symptoms of heat rash
include:
 Red cluster of pimples or
small blisters.
 Drainage of pus from the
affected area.
 More likely to appear on the
neck and upper chest, in the
groin, under the breast and
in elbow creases
Workers experiencing heat rash should:

 Keep the affected area clean and dry.
 Periodically allow the skin to dry.
 Remove any protective clothing that is
uncomfortable.
 Drink additional water and use fluid
replenishments.
 Move to rest area and follow work rest rule.
 Dusting power may be used to increase
comfort
Wash regularly to
keep skin clean
and dry.
HEAT CRAMPS
Heat Cramps are usually caused by performing hard physical labour in a hot environment. Heat cramps usually
affect people who sweat a lot during strenuous activity. This sweating depletes the body’s salt and moisture.

 Painful cramps or
spasm usually in the
abdomen, arms or
legs
 Rapid heartbeat
 Hot, sweaty skin
 Dizziness
 Nausea and
vomiting
 Stop all physical activities, and sit quietly in a cool
place.
 Rink water or a sports beverage or electrolyte
replenishment
 Do not return to strenuous activity for a few hours
after the cramps subside to assure recovery
 Seek medical attention for heat cramps if they do not
subside in one (1) hour. Or the worker has previous
history of any serious ailment including heart diseases
Attention: Do not take any salt tablets
Reduce activity
levels and ⁄or
heat exposure.
Drink fluids
regularly.
Workers should
check on each
other to help spot
the symptoms
that often
precede heat
stroke.
HEAT SYNCOPE (FAINTING)
Heat collapse occurs when a person stands for long periods in very hot conditions. It can also happen when
sudden standing from sitting or lying position. Prolonged dehydration may lead to heat fainting
Sufferers usually respond rapidly if they lie down, elevate their legs, drink plenty of fluid, and are sponged down
with tepid water. If falls unconscious, immediate medical help may be required
 Sudden dizziness
 Weakness or sudden black out
 Light headedness, Blurred vision
 Headache
 Casualty must be moved to
cool place for rest and
drink fluids/water
 Remove him from hot
Reduce activity levels and/or
heat exposure. Drink fluids
regularly. Move around and
avoid standing in one place

DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 37 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
 Sensation that the room is moving
 Ringing in the ears
 Nausea, vomiting
 Paleness
 Fainting and unconsciousness
conditions and bring him to
rest shelter and
 Slowly drink water or
electrolyte drink
 If fainted or fell
unconscious, call
ambulance and make
arrangements for
immediate transfer to
hospital
for too long. Workers should
check on each other to help
spot the symptoms that
often precede heat stroke.
HEAT EXHAUSTION
Heat exhaustion is a body response to excessive loss of body fluids and body salt, normally through excessive
sweating as well as by reduced intake of water or consumption of alcoholic drinks etc.
 Noticeable weakness or
fatigue
 Dizziness
 Nausea
 Moist skin
 Pale or flushed complexion
 Fast and shallow breathing
 Stay in cool or air‐conditioned
rest area
 Drink more electrolyte or water
 Loosen or remove heavy work/
protective clothing
 If the condition persists, take a
cool shower or wipe body with
cold press to cool the skin
Reduce activity levels and/or
heat exposure. Drink fluids
regularly. Workers should
check on each other to help
often precede heat stroke.
HEAT STROKE
Heat stroke is the most serious heat related disorder and requires urgent medical attention if suspected. It a form
of hyperthermia with abnormally elevated body temperature within 10‐15 minutes. Body temperature can rise
above 104 degrees and can be fatal if medical treatment is provided immediately.
Human body generally produce heat and that is dissipated through sweat mechanism. Excessive heat and
dehydration cause body to lose control of its temperature and it rises, this can lead to brain damage and
permanent organ damages.
 Chills and shivering
 High body temperature
 Absence of sweating
 Pale, flushed dry skin,
 Rapid but weak pulse
 Breathing difficulties
 Erratic or unexpected behaviour
 Confusion
 Seizure
 Unconsciousness
 Immediately move the victim to a
shady area if possible
 Cool the victim rapidly and
aggressively
 Remove or loosen tight clothing
 Put ice and place ice packs
around neck, armpits and groins.
Monitor body temperature with
thermometer and continue to
cool until temperature drops.
 Call ambulance and immediately
alert site emergency
management team according to
site medical emergency plan.
Reduce activity levels
and/or heat exposure.
Drink fluids regularly.
Workers should check
on each other to help
often precede heat
stroke.

11.2
DOCUME
Hea
ORIGINA
3844-LZ-
This documen
Attachm
ENT TITLE:
at Stress M
ATOR No.
PC-GA0001
ment 2: DE
anagement
140
A
property, and cann
EHYDRAT
t Procedure
ADCO Proje
P02065
not be used by oth
TION AND
e
A
P
ct No.
5
R
hers for any purpo
URINE CO
ADCO DOC.
PAGE :
Rev. 02
OLOUR
. NO. 30.99
38
Date :
written consent.
9.90.1739
8 of 43
20 March 20017

11.3
Note: NO
Company
Shelters

1
TWL Mon
2
3
Work bre
4
5
6
7
8
9
Auditing
10
11
12
Medical
13
14
15
16
DOCUME
Hea
ORIGINA
3844-LZ-
This documen
Attachm
O WATER = N
y:
Requireme
Sufficient s
nitoring
TWL monit
Subcontrac
raised
eaks
Work brea
A dedicate
implement
The acclim
Subcontrac
Total daily
No work is
June ‐ 15th
System for
place.
Weekly aud
shelter aud
Cross audit
Response
Medical re
Heat stress
Medical te
There is a t
place by th
ENT TITLE:
at Stress M
ATOR No.
PC-GA0001
ment 3: HE

NO WORK
ents
shelters com
tored and co
ctors conduc
k routine mo
d heat stress
tation of the
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ctor has full m
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am conduct
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anagement
140
A
property, and cann
EAT STRE
HEAT STR
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ADCO Proje
P02065
not be used by oth
ESS SYST
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the site stand
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A
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R
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EM AUDIT
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or the period
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ADCO DOC.
PAGE :
Rev. 02
T FORM
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and the requ
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. NO. 30.99
39
Date :
written consent.
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9.90.1739
9 of 43
20 March 20
Date:

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DOCUMENT TITLE:
ADCO DOC. NO. 30.99.90.1739
PAGE : 40 of 43
ORIGINATOR No.
3844-LZ-PC-GA000140
ADCO Project No.
P02065
17
Individuals with higher risk potential in the work force have been identified e.g. high
protein & fat diet, obese, diabetic, cardiovascular illness, age and on medication
Training
18 Inductions have specific heat stress management slides included
19
There is a training plan in place to train all workers in heat stress refresher training
by the end of April. Training plan covers number of training sessions required,
location of training and who will deliver the training.
20 Training includes a test for understanding and commitment to follow requirements
21 Specific management awareness training has been held

Hazard Assessment
22
An assessment of tasks has been undertaken in order to identify possible work
practices or environments that have the potential to cause heat stress.

Workplace communication
23
EPC provides weekly reminder of heat stress prevention information toolbox topic
during the summer months.

Planning
24
The required number of heat stress shelters has been estimated for each of the
Subcontractors based on the manpower plan for the period of April‐October
25
The required number of heat stress shelters has been communicated to the
Subcontractors and progress on implementation is being reported weekly to the
EPC/PMC.

Audit Comments
1
2
3
4
5
6
Inspected by Designation
Signature Date

11.4

Note: NO
Company
Shelter N
1
2
TWL Mon
3
4
Welfare F
5
6
7
8
9
10
11
12
13
14
Inspected
By:
Name:
Signature
DOCUME
Hea
ORIGINA
3844-LZ-
This documen
Attachm
WATER = N
y:
o:
Require
Is rest s
workers
More re
nitoring
TWL ch
workforc
Urine co
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Facilities
Proper s
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25 L iglo
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No cons
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ENT TITLE:
at Stress M
ATOR No.
PC-GA0001
ment 4: DA

NO WORK
ements
shelter locate
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140
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ADCO DOC.
PAGE :
Rev. 02
CTION
Date:
No
. NO. 30.99
41
Date :
written consent.
Comm
9.90.1739
of 43
20 March 20
ment
017

Rev 2
11.5
DOCUME
Hea
ORIGINA
3844-LZ-
This documen
Attachm
ENT TITLE:
at Stress M
ATOR No.
PC-GA0001
ment 5: HS
anagement
140
A
property, and cann
SE ASSUR
t Procedure
ADCO Proje
P02065
not be used by oth
RANCE AU
e
A
P
ct No.
5
R
hers for any purpo
UDIT CHE
ADCO DOC.
PAGE :
Rev. 02
CKLIST
. NO. 30.99
42
Date :
written consent.
9.90.1739
2 of 43
20 March 20017

DOCUME
Hea
ORIGINA
3844-LZ-
This documen
ENT TITLE:
at Stress M
ATOR No.
PC-GA0001
anagement
140
A
property, and cann
t Procedure
ADCO Proje
P02065
not be used by oth
e
A
P
ct No.
5
R
hers for any purpo
ADCO DOC.
PAGE :
Rev. 02
. NO. 30.99
43
Date :
written consent.
9.90.1739
3 of 43
20 March 20017

Heat Stress Prevention Procedure

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