Huawei FusionDC1000A User manual

FusionDC1000A Prefabricated All-in-One Data
Center
V100R021C00
Commissioning Guide (IT Scenario)
Issue 02
Date 2022-12-15
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Copyright © Huawei Digital Power Technologies Co., Ltd. 2022. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Digital Power Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei
Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features
described in this document may not be within the purchase scope or the usage scope. Unless otherwise
specied in the contract, all statements, information, and recommendations in this document are
provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every eort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Digital Power Technologies Co., Ltd.
Address: Huawei Digital Power Antuoshan Headquarters
Futian,Shenzhen 518043
People's Republic of China
Website: https://e.huawei.com
Issue 02 (2022-12-15) Copyright © Huawei Digital Power Technologies Co., Ltd. i

About This Document
Purpose
This document describes how to power on and commission the FusionDC1000A
prefabricated all-in-one data center solution (FusionDC1000 for short) in terms of
safety precautions, preparations, power-on check, power-on commissioning, joint
commissioning, power-o, and core device commissioning. It provides you a quick
grasp of how to commission the prefabricated all-in-one data center.
Intended Audience
This document is intended for:
● Hardware installation engineers
● Technical support engineers
● Commissioning engineers
● Maintenance engineers
Symbol Conventions
The symbols that may be found in this document are dened as follows.
Symbol Description
Indicates a hazard with a high level of risk which,
if not avoided, will result in death or serious
injury.
Indicates a hazard with a medium level of risk
which, if not avoided, could result in death or
serious injury.
Indicates a hazard with a low level of risk which,
if not avoided, could result in minor or moderate
injury.
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Symbol Description
Indicates a potentially hazardous situation which,
if not avoided, could result in equipment damage,
data loss, performance deterioration, or
unanticipated results.
NOTICE is used to address practices not related to
personal injury.
Supplements the important information in the
main text.
NOTE is used to address information not related
to personal injury, equipment damage, and
environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue
contains all the changes made in earlier issues.
Issue 02 (2022-12-15)
This issue is the second ocial release.
● Optimized the content description.
● Updated 1 Safety Information.
Issue 01 (2021-04-20)
This issue is the rst ocial release.
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Contents
About This Document................................................................................................................ ii
1 Safety Information.................................................................................................................. 1
1.1 Personal Safety.........................................................................................................................................................................2
1.2 Electrical Safety........................................................................................................................................................................4
1.3 Environmental Requirements.............................................................................................................................................. 8
1.4 Mechanical Safety.................................................................................................................................................................10
1.5 Equipment Safety..................................................................................................................................................................15
1.5.1 UPS Safety............................................................................................................................................................................16
1.5.2 Cooling System Safety..................................................................................................................................................... 17
1.5.3 Battery Safety..................................................................................................................................................................... 17
2 Commissioning Guide Usage.............................................................................................. 25
3 Preparations for Power-On Commissioning....................................................................26
3.1 Tools.......................................................................................................................................................................................... 26
3.2 Reference Documentation................................................................................................................................................. 28
3.3 Commissioning Personnel Skill Requirements............................................................................................................ 28
3.4 Check Before Power-On......................................................................................................................................................29
4 Commissioning Core Devices.............................................................................................. 34
4.1 Commissioning the Integrated UPS................................................................................................................................34
4.1.1 (Optional) Commissioning the ATS............................................................................................................................ 34
4.1.2 Powering On and Starting the UPS.............................................................................................................................35
4.1.2.1 Power-On.......................................................................................................................................................................... 35
4.1.2.2 Starting the Inverter......................................................................................................................................................36
4.1.2.3 Powering On Loads....................................................................................................................................................... 36
4.2 Commissioning the SmartLi.............................................................................................................................................. 37
4.2.1 Connecting the Battery Supply..................................................................................................................................... 37
4.2.2 Powering O Batteries.................................................................................................................................................... 41
4.2.3 Performing EPO..................................................................................................................................................................42
4.2.4 Clearing the EPO State.................................................................................................................................................... 42
4.3 Commissioning Smart Cooling Products.......................................................................................................................43
4.4 Commissioning Monitoring Devices............................................................................................................................... 44
4.4.1 Commissioning the Access Control System.............................................................................................................. 44
4.5 Commissioning Fire Extinguishing Devices (Standard)........................................................................................... 45
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4.5.1 Commissioning the Fire Alarm Control Panel (Standard)...................................................................................45
4.5.2 Commissioning the Emergency Light (Standard).................................................................................................. 46
4.6 Commissioning Fire Extinguishing Devices (CE)........................................................................................................ 47
4.6.1 Commissioning the Emergency Light (CE)............................................................................................................... 48
4.6.2 (Optional) Commissioning the ASD........................................................................................................................... 49
4.7 (Optional) NetEco Management.................................................................................................................................... 50
4.7.1 Preparations and WebUI Login.....................................................................................................................................50
4.7.2 Performing Basic Operations Before Adding Devices........................................................................................... 54
4.7.2.1 IP Address Preinstallation Planning......................................................................................................................... 55
4.7.2.2 Obtaining the NetEco Software License................................................................................................................ 55
4.7.2.3 Logging In to the NetEco Client............................................................................................................................... 55
4.7.2.4 Loading the NetEco Software License.................................................................................................................... 56
4.7.2.5 Installing NE Adapters..................................................................................................................................................56
4.7.2.6 Creating a Management Domain.............................................................................................................................57
4.7.2.7 How Can I Set and Add a SmartLi (Modbus-TCP)?............................................................................................58
4.7.2.8 Process of adding a device..........................................................................................................................................59
4.7.3 Setting and Adding the ECC800 Collector................................................................................................................ 60
4.7.3.1 Setting Management System Parameters............................................................................................................. 61
4.7.3.2 Setting the Transparent Transmission Function for the ECC800-Pro Collector.........................................62
5 System Commissioning........................................................................................................ 65
5.1 Switching Between Two Power Supplies...................................................................................................................... 65
5.2 Fire Extinguishing System Commissioning (3C).........................................................................................................66
5.3 Fire Extinguishing System Commissioning (CE).........................................................................................................72
5.4 System Power-O.................................................................................................................................................................78
A Acronyms and Abbreviations............................................................................................. 79
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1 Safety Information
Statement
Before transporting, storing, installing, operating, using, or maintaining the
equipment, read this document, strictly follow the instructions provided herein,
and follow all the safety instructions on the equipment and in this document. In
this document, "equipment" refers to the products, software, components, spare
parts, and/or services related to this document; "the Company" refers to the
manufacturer (producer), seller, and/or service provider of the equipment; "you"
refers to the entity that transports, stores, installs, operates, uses, and/or
maintains the equipment.
The Danger, Warning, Caution, and Notice statements described in this
document do not cover all the safety precautions. You also need to comply with
relevant international, national, or regional standards and industry practices. The
Company shall not be liable for any consequences that may arise due to
violations of safety requirements or safety standards concerning the design,
production, and usage of the equipment.
The equipment should be used in an environment that meets the design
specications. Otherwise, the equipment may be faulty, malfunctioning, or
damaged, which is not covered under the warranty. The Company shall not be
liable for any property loss, personal injury, or even death caused thereby.
Comply with applicable laws, regulations, standards, and specications during
transportation, storage, installation, operation, use, and maintenance.
Do not perform reverse engineering, decompilation, disassembly, adaptation,
implantation, or other derivative operations on the equipment software. Do not
study the internal implementation logic of the equipment, obtain the source code
of the equipment software, violate intellectual property rights, or disclose any of
the performance test results of the equipment software.
The Company shall not be liable for any of the following circumstances or
their consequences:
● Equipment damage due to force majeure such as earthquakes, oods,
volcanic eruptions, debris ows, lightning strikes, res, wars, armed conicts,
typhoons, hurricanes, tornadoes, and extreme weather conditions
● Operation beyond the conditions specied in this document
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● Installation or use in environments that do not comply with international,
national, or regional standards
● Failure to follow the operation instructions and safety precautions on the
product and in the document
● Unauthorized modications to the product or software code or removal of the
product
● Damage caused during transportation by you or a third party authorized by
you
● Storage conditions that do not meet the requirements specied in the product
document
● Failure to comply with local laws, regulations, or related standards due to the
materials and tools prepared by you
● Damage caused by your or a third party's negligence, intentional breach,
gross negligence, or improper operations or damage not caused by the
Company
1.1 Personal Safety
D ANGER
Do not work with power on during installation. Do not install or remove a cable
with power on. Transient contact between the core of the cable and the conductor
will generate electric arcs or sparks, which may cause a re or personal injury.
D ANGER
Non-standard and improper operations on the energized equipment may cause
re or electric shocks, resulting in property damage, personal injury, or even death.
D ANGER
Before operations, remove conductive objects such as watches, bracelets, bangles,
rings, and necklaces to prevent electric shocks.
D ANGER
During operations, use dedicated insulated tools to prevent electric shocks or short
circuits. The insulation and voltage resistance must comply with local laws,
regulations, standards, and specications.
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WARNING
During operations, wear personal protective equipment such as protective
clothing, insulated shoes, goggles, safety helmets, and insulated gloves.
Figure 1-1 Personal protective equipment
General Requirements
● Do not stop protective devices. Pay attention to the warnings, cautions, and
related precautionary measures in this document and on the equipment.
● If there is a likelihood of personal injury or equipment damage during
operations, immediately stop, report the case to the supervisor, and take
feasible protective measures.
● Do not power on the equipment before it is installed or conrmed by
professionals.
● Do not touch the power supply equipment directly or with conductors such as
damp objects. Before touching any conductor surface or terminal, measure
the voltage at the contact point to ensure that there is no risk of electric
shock.
● Do not touch a running fan with your hands, components, screws, tools, or
boards. Otherwise, personal injury or equipment damage may occur.
● In the case of a re, immediately leave the building or the equipment area
and activate the re alarm or call emergency services. Do not enter the
aected building or equipment area under any circumstances.
Personnel Requirements
● Only professionals and trained personnel are allowed to operate the
equipment.
– Professionals: personnel who are familiar with the working principles and
structure of the equipment, trained or experienced in equipment
operations and are clear of the sources and degree of various potential
hazards in equipment installation, operation, maintenance
– Trained personnel: personnel who are trained in technology and safety,
have required experience, are aware of possible hazards on themselves in
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certain operations, and are able to take protective measures to minimize
the hazards on themselves and other people
● Personnel who plan to install or maintain the equipment must receive
adequate training, be able to correctly perform all operations, and understand
all necessary safety precautions and local relevant standards.
● Only qualied professionals or trained personnel are allowed to install,
operate, and maintain the equipment.
● Only qualied professionals are allowed to remove safety facilities and inspect
the equipment.
● Personnel who will perform special tasks such as electrical operations,
working at heights, and operations of special equipment should possess the
required local qualications.
● Only authorized professionals are allowed to replace the equipment or
components (including software).
● Only personnel who need to work on the equipment are allowed to access
the equipment.
1.2 Electrical Safety
D ANGER
Before connecting cables, ensure that the equipment is intact. Otherwise, electric
shocks or res may occur.
D ANGER
Non-standard and improper operations may result in re or electric shocks.
D ANGER
Prevent foreign matter from entering the equipment during operations. Otherwise,
equipment damage, load power derating, power failure, or personal injury may
occur.
WARNING
For the equipment that needs to be grounded, install the ground cable rst when
installing the equipment and remove the ground cable last when removing the
equipment.
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CA UTION
Do not route cables behind the air intake or exhaust vents of the equipment.
CA UTION
Do not directly connect aluminum cables to prevent electrochemical corrosion of
copper and aluminum.
CA UTION
Stay away from the equipment when preparing cables to prevent cable scraps
from entering the equipment. Cable scraps may cause sparks and result in
personal injury and equipment damage.
General Requirements
● Follow the procedures described in the document for installation, operation,
and maintenance. Do not reconstruct or alter the equipment, add
components, or change the installation sequence without permission.
● Install temporary fences or warning ropes and hang "No Entry" signs around
the operation area to keep unauthorized personnel away from the area.
● Before installing or removing power cables, turn o the switches of the
equipment and its upstream and downstream switches.
● If any liquid is detected inside the equipment, disconnect the power supply
immediately and do not use the equipment.
● Before performing operations on the equipment, check that all tools meet the
requirements and record the tools. After the operations are complete, collect
all of the tools to prevent them from being left inside the equipment.
● Before installing power cables, check that cable labels are correct and cable
terminals are insulated.
● When installing the equipment, use a torque tool of a proper measurement
range to tighten the screws. When using a wrench to tighten the screws,
ensure that the wrench does not tilt and the torque error does not exceed
10% of the specied value.
● Ensure that bolts are tightened with a torque tool and marked in red and blue
after double-check. Installation personnel mark tightened bolts in blue.
Quality inspection personnel conrm that the bolts are tightened and then
mark them in red. (The marks should cross the edges of the bolts.)
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● It is recommended that the three-phase loads be equalized and the neutral-
ground voltage be kept at less than 2 V (ignore this point if no neutral wire is
required) to meet power distribution requirements.
● To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telecommunication network voltage (TNV) circuits.
● After the installation is complete, ensure that protective cases, insulation
tubes, and other necessary items for all electrical components are in position
to avoid electric shocks.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
● Before maintaining a downstream electrical device supply or power
distribution device, turn o the output switch of its power supply equipment.
● During equipment maintenance, attach "Do not switch on" labels near the
upstream and downstream switches or circuit breakers as well as warning
signs to prevent accidental connection. The equipment can be powered on
only after troubleshooting is complete.
● Before fault diagnosis and troubleshooting, take the following safety
measures: Disconnect the power supply. Measure the power. Install a ground
cable. Hang warning signs and set up fences.
● Check equipment connections periodically, ensuring that all screws are
securely tightened.
● Only qualied professionals can replace a damaged cable.
● Do not scrawl, damage, or block any labels or nameplates on the equipment.
Promptly replace labels that have worn out.
● Do not use solvents such as water, alcohol, or oil to clean electrical
components inside or outside of the equipment.
Grounding
● Ensure that the grounding impedance of the equipment complies with local
electrical standards.
● Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is reliably grounded.
● Ensure that the protective ground point of the equipment is reliably
connected to the ground screw of the metal enclosure (ground resistance: ≤
0.1 ohm).
● Ensure that the ground resistance of the system for lightning protection is less
than or equal to 10 ohms.
● Do not operate the equipment in the absence of a properly installed ground
conductor.
● Do not damage the ground conductor.
● If high touch current may occur on the equipment, ground the protective
ground terminal on the equipment enclosure before connecting the power
supply; otherwise, electric shock as a result of touch current may occur.
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Cabling
● When selecting, installing, and routing cables, follow local safety regulations
and rules.
● The ame spread rating of cables should meet the UL 1581 VW-1 or IEC
60332-3-22 (ZB) or higher requirements.
● When routing power cables, ensure that there is no coiling or twisting. Do not
join or weld power cables. If necessary, use a longer cable.
● Ensure that all cables are properly connected and insulated, and meet
specications.
● Ensure that the slots and holes for routing cables are free from sharp edges,
and that the positions where cables are routed through pipes or cable holes
are equipped with cushion materials to prevent the cables from being
damaged by sharp edges or burrs.
● If a cable is connected to the cabinet from the top, bend the cable in a U
shape outside the cabinet and then route it into the cabinet.
● Ensure that cables of the same type are bound together neatly and straight
and that the cable sheath is intact. When routing cables of dierent types,
ensure that they are at least 30 mm away from each other.
● If the external conditions (such as the cable layout or ambient temperature)
change, verify the cable usage in accordance with the IEC-60364-5-52 or local
laws and regulations. For example, check that the current-carrying capacity
meets requirements.
● When routing cables, reserve at least 30 mm clearance between the cables
and heat-generating components or areas. This prevents deterioration or
damage to the cable insulation layer.
● When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
– Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
– Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
● Do not perform any improper operations, for example, dropping cables
directly from a vehicle. Otherwise, the cable performance may deteriorate due
to cable damage, which aects the current-carrying capacity and temperature
rise.
ESD
NO TICE
The static electricity generated by human bodies may damage the electrostatic-
sensitive components on boards, for example, the large-scale integrated (LSI)
circuits.
● When touching the equipment and handling boards, modules with exposed
circuit boards, or application-specic integrated circuits (ASICs), observe ESD
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protection regulations and wear ESD clothing and ESD gloves or a well-
grounded ESD wrist strap.
Figure 1-2 Wearing an ESD wrist strap
● When holding a board or a module with exposed circuit boards, hold its edge
without touching any components. Do not touch the components with bare
hands.
● Package boards or modules with ESD packaging materials before storing or
transporting them.
1.3 Environmental Requirements
D ANGER
Do not expose the equipment to ammable or explosive gas or smoke. Do not
perform any operation on the equipment in such environments.
D ANGER
Do not store any ammable or explosive materials in the equipment area.
D ANGER
Do not place the equipment near heat sources or re sources, such as smoke,
candles, heaters, or other heating devices. Overheat may damage the equipment
or cause a re.
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WARNING
Install the equipment in an area far away from liquids. Do not install it under
areas prone to condensation, such as under water pipes and air exhaust vents, or
areas prone to water leakage, such as air conditioner vents, ventilation vents, or
feeder windows of the equipment room. Ensure that no liquid enters the
equipment to prevent faults or short circuits.
WARNING
To prevent damage or re due to high temperature, ensure that the ventilation
vents or heat dissipation systems are not obstructed or covered by other objects
while the equipment is running.
General Requirements
● Ensure that the equipment is stored in a clean, dry, and well ventilated area
with proper temperature and humidity and is protected from dust and
condensation.
● Do not install or run the equipment beyond the technical specications.
Otherwise, its performance and safety will be compromised.
● Do not install, use, or operate outdoor equipment and cables (including but
not limited to moving equipment, operating equipment and cables, inserting
connectors to or removing connectors from signal ports connected to outdoor
facilities, working at heights, performing outdoor installation, and opening
doors) in harsh weather conditions such as lightning, rain, snow, and level 6
or stronger wind.
● Do not install the equipment in an environment with direct sunlight, dust,
smoke, volatile or corrosive gases, infrared and other radiations, organic
solvents, or salty air.
● Do not install the equipment in an environment with conductive metal or
magnetic dust.
● Do not install the equipment in an area conducive for the growth of
microorganisms such as fungus or mildew.
● Do not install the equipment in an area with strong vibration, noise, or
electromagnetic interference.
● Ensure that the site complies with local laws, regulations, and related
standards.
● Ensure that the ground in the installation environment is solid, free from
spongy or soft soil, and not prone to subsidence. The site must not be located
in a low-lying land or an area prone to water accumulation, and the
horizontal level of the site must be above the highest water level of that area
in history.
● Before opening doors during the installation, operation, and maintenance of
the equipment, clean up any water, ice, snow, or other foreign objects on the
top of the equipment to prevent foreign objects from falling into the
equipment.
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● When installing the equipment, ensure that the installation surface is solid
enough to bear the weight of the equipment.
● Ensure that the equipment room provides good heat insulation, and that the
walls and oor are dampproof.
● Install rodent guards at the door of the equipment room to prevent rodents
and insects from entering the room.
● All cable holes should be sealed. Seal the used cable holes with sealing putty.
Seal the unused cable holes with the caps delivered with the equipment. The
following gure shows the criteria for correct sealing with sealing putty.
● After installing the equipment, remove idle packing materials such as cartons,
foam, plastics, and cable ties from the equipment area.
1.4 Mechanical Safety
D ANGER
When working at heights, wear a safety helmet and safety harness or waist belt
and fasten it to a solid structure. Do not mount it on an insecure moveable object
or a metal object with sharp edges. Make sure that the hooks will not slide o.
WARNING
Ensure that all necessary tools are ready and inspected by a professional
organization. Do not use tools that have signs of scratches or fail to pass the
inspection or whose inspection validity period has expired. Ensure that the tools
are secure and not overloaded.
WARNING
Before installing equipment in a cabinet, ensure that the cabinet is securely
fastened with a balanced center of gravity. Otherwise, tipping or falling cabinets
may cause bodily injury and equipment damage.
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WARNING
When pulling equipment out of a cabinet, be aware of unstable or heavy objects
in the cabinet to prevent injury.
WARNING
Do not drill holes into the equipment. Doing so may aect the sealing
performance and electromagnetic containment of the equipment and damage
components or cables inside. Metal shavings from drilling may short-circuit boards
inside the equipment.
General Requirements
● Repaint any paint scratches caused during equipment transportation or
installation in a timely manner. Equipment with scratches cannot be exposed
for an extended period of time.
● Do not perform operations such as arc welding and cutting on the equipment
without evaluation by the Company.
● Do not install other devices on the top of the equipment without evaluation
by the Company.
● When performing operations over the top of the equipment, take measures to
protect the equipment against damage.
● Use correct tools and operate them in the correct way.
Moving Heavy Objects
● Be cautious to prevent injury when moving heavy objects.
● If multiple persons need to move a heavy object together, determine the
manpower and work division with consideration of height and other
conditions to ensure that the weight is equally distributed.
● If two persons or more move a heavy object together, ensure that the object
is lifted and landed simultaneously and moved at a uniform pace under the
supervision of one person.
● Wear personal protective gears such as protective gloves and shoes when
manually moving the equipment.
● To move an object by hand, approach to the object, squat down, and then lift
the object gently and stably by the force of the legs instead of your back. Do
not lift it suddenly or turn your body around.
● Move or lift the equipment by holding its handles or lower edges. Do not hold
the handles of modules that are installed in the equipment.
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● Do not quickly lift a heavy object above your waist. Place the object on a
workbench that is half-waist high or any other appropriate place, adjust the
positions of your palms, and then lift it.
● Move a heavy object stably with balanced force at an even and low speed. Put
down the object stably and slowly to prevent any collision or drop from
scratching the surface of the equipment or damaging the components and
cables.
● When moving a heavy object, be aware of the workbench, slope, staircase,
and slippery places. When moving a heavy object through a door, ensure that
the door is wide enough to move the object and avoid bumping or injury.
● When transferring a heavy object, move your feet instead of turning your
waist around. When lifting and transferring a heavy object, ensure that your
feet point to the target direction of movement.
● When transporting the equipment using a forklift truck, ensure that the forks
are properly positioned so that the equipment does not topple. Before moving
the equipment, secure it to the forklift truck using ropes. When moving the
equipment, assign dedicated personnel to take care of it.
● Choose sea or roads in good conditions for transportation as transportation
by railway or air is not supported. Avoid tilt or jolt during transportation.
● Ensure that tilt angle of the cabinet meets the requirements shown in the
gure. The tilt angle α of the packed cabinet must be less than or equal to
15°. After the cabinet is unpacked, its tilt angle α must be less than or equal
to 10°.
Working at Heights
● Any operations performed 2 meters or higher above the ground should be
supervised properly.
● Only trained and qualied personnel are allowed to work at heights.
● Do not work at heights when steel pipes are wet or other risky situations
exist. After the preceding conditions no longer exist, the safety owner and
relevant technical personnel need to check the involved equipment. Operators
can begin working only after safety is conrmed.
● Set a restricted area and prominent signs for working at heights to warn away
irrelevant personnel.
● Set guard rails and warning signs at the edges and openings of the area
involving working at heights to prevent falls.
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● Do not pile up scaolding, springboards, or other sundries on the ground
under the area involving working at heights. Do not allow people to stay or
pass under the area involving working at heights.
● Carry operation machines and tools properly to prevent equipment damage or
personal injury caused by falling objects.
● Personnel involving working at heights are not allowed to throw objects from
the height to the ground, or vice versa. Objects should be transported by
slings, hanging baskets, highline trolleys, or cranes.
● Do not perform operations on the upper and lower layers at the same time. If
unavoidable, install a dedicated protective shelter between the upper and
lower layers or take other protective measures. Do not pile up tools or
materials on the upper layer.
● Dismantle the scaolding from top down after nishing the job. Do not
dismantle the upper and lower layers at the same time. When removing a
part, ensure that other parts will not collapse.
● Ensure that personnel working at heights strictly comply with the safety
regulations. The Company is not responsible for any accident caused by
violation of the safety regulations on working at heights.
● Do not loiter when working at heights. Do not rest in the area involving
working at heights.
Using Ladders
● Use wooden or insulated ladders when you need to perform live-line working
at heights.
● Platform ladders with protective rails are preferred. Single ladders are not
recommended.
● Before using a ladder, check that it is intact and conrm its load bearing
capacity. Do not overload it.
● Ensure that the ladder is securely positioned and held rm.
● When climbing up the ladder, keep your body stable and your center of
gravity between the side rails, and do not overreach to the sides.
● When a step ladder is used, ensure that the pull ropes are secured.
● If a single ladder is used, the recommended angle for the ladder against the
oor is 75 degrees, as shown in the following gure. A square can be used to
measure the angle.
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● If a single ladder is used, ensure that the wider end of the ladder is at the
bottom, and take protective measures to prevent the ladder from sliding.
● If a single ladder is used, do not climb higher than the fourth rung of the
ladder from the top.
● If you use a single ladder to climb up to a platform, ensure that the ladder is
at least 1 m higher than the platform.
Hoisting
● Only trained and qualied personnel should perform hoisting operations.
● Install temporary warning signs or fences to isolate the hoisting area.
● Ensure that the foundation where hoisting is performed meets the load-
bearing requirements.
● Before hoisting objects, ensure that hoisting tools are rmly secured onto a
xed object or wall that meets the load-bearing requirements.
● During hoisting, do not stand or walk under the crane or the hoisted objects.
● Do not drag steel ropes and hoisting tools or bump hoisted objects against
hard objects during hoisting.
● Ensure that the angle between two hoisting ropes is no more than 90
degrees, as shown in the following gure.
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