HP Jetting Awareness Rev 0

8/9/2019 HP Jetting Awareness Rev 0

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Course Objectives

At the end of the course, participant will :

1) Have detailed knowledge of all hazards with High Pressure Jetting

2) Understand the principles of water jetting, type of equipment to

be use and system

3) Understand the type PPE being use and all the safety precaution

Video 1
http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%201%20-%20High%20Pressure%20washer%20500%20Bar%20Rust%20removal%20testing.mp4http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%201%20-%20High%20Pressure%20washer%20500%20Bar%20Rust%20removal%20testing.mp4


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Definition

High Pressure Water Jetting (HP Jetting) is :

the use of high energy streams of water either

for cleaning, cutting or removal of solidmaterials.


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Responsibilities

Operator(s) are responsible to: Attend the HP jetting awareness

Carry out the job with compliance to all the safety requirement

Correct PPE to be worn

Barriers and safety signs are kept in place

Video 1
http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%201%20-%20High%20Pressure%20washer%20500%20Bar%20Rust%20removal%20testing.mp4http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%201%20-%20High%20Pressure%20washer%20500%20Bar%20Rust%20removal%20testing.mp4


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When high pressure water jet cleaning (hydro

jetting) is in progress, the particular hazards are:

Piercing of the skin by the water jet,

Flying debris from the cleaning operations,

Release of hazardous materials into theatmosphere from dislodged deposits,

Noise of the cleaning operation that may

damage hearing or drown out the sound of an

alarm, Difficulty in breathing in confined space due to

the high water vapor content in the air

Electrostatic charging of nozzles and lances.

Hazard


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Precaution

The following safety precautions shall be observed when high pressure water

jet cleaning (hydro jetting) is in progress:

A Supervisor / Leadman shall be designated for controlling all work

involving hydro jetting and to be onsite when the job is in progress.

All operating areas shall be barricaded off with suitable barriers to

prevent accidental entry of any un-authorized personnel.

Signs to be displayed :

DANGER HIGH PRESSURE WATER BLASTING, KEEP OUT !!

AUTHORISED PERSONNEL ONLY.

Entry into the area must be authorized by the Supervisor / Leadman.

HP jetting can only be carried out by a team of at least 2 personnel.


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(Continue)

All high pressure equipment shall be earthed before work starts and during

operation, to prevent the development of electrostatic charges between

the lance and the workplace.

Appropriate personal protective equipment shall be worn when operating

high pressure water jet equipment.

These PPE must be worn :

Safety Helmets

Safety goggles or a full hood with face shield

Waterproof clothing

Hearing protection

Suitable Safety gloves, and safety footwear X

Precaution

Note : Safety Glasses are Not suitableVideo 3

Video 2
http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%203%20-%20Fluid%20Injection%20Injury%20-%20YouTube.mp4http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%202%20-%20Safety%20at%20work%20-%20Water%20Jetting%20boots%20damaged%20by%20high%20pressure%20water%20-%20YouTube.mp4http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%202%20-%20Safety%20at%20work%20-%20Water%20Jetting%20boots%20damaged%20by%20high%20pressure%20water%20-%20YouTube.mp4http://localhost/var/www/apps/conversion/tmp/scratch_5/Video%203%20-%20Fluid%20Injection%20Injury%20-%20YouTube.mp4


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(Continue)

All high pressure equipment shall be isolated and de-pressurized before

being left unattended.

Correct Safety Instruction shall be provided before use the equipment

Ensure the area are free from any loose items and debris to avoid

dangerous flying projectile(s).

Operator must have good access to the work site

Always use Safe Working Platforms and Do Not Use Ladders for the work

Precaution


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(Continue)

All personnel involved with the water jetting operation must be in position

prior to start up

The pressure at the unit should be built up gradually. The lowest pressure

necessary to complete the job should be use.

Precaution


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Worker ID Card

Any person injured by high pressure

water jetting must be taken to hospital for

immediate attention, Medical Staff must be

informed caused of injury was the result of

high pressure jetting.

This card must be carried at all times

when they are working.


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Checks To Be Made

1. Hoses must have the correct rating and size, where hoses must be higher

rating than the pressure pump.

2. All fittings and couplings must be in good condition and correct pressure

rating3. Hoses, fitting and nozzles must be checked for signs of damage or wear.

Any leaks must be rectify before work begins

4. Hose protectors / Whip-lashes must be in place

5. Hoses must be located to avoid being run over by vehicles or causing triphazards

6. Hoses (with Nozzle) must be secured under the armpit before operation of

high pressure water jetting machine.

Hoses

Video 4


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1. A valid Permit To Work is in place.

2. If the job carried out in Confined Space, all the

necessary precaution must be incompliance.

3. A minimum of two person to carry out the job

Permit To Work

Checks To Be Made


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1. The equipment has been inspected and certify by third party inspection

2. Lube oil, water and hydraulic fluids has been check and the gauge level

are correct.

3. Pressure gauge must function properly4. Repair and maintenance shall be in accordance with manufacturers

standards, and to be done by a competent mechanic.

Compressor and Pump

Checks To Be Made


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1. Nozzle must be clean and no signs of debris or damage

2. Jetting guns trigger mechanism must be working correctly

3. Connector part must be in good condition

Jetting lance and nozzles

Checks To Be Made


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1. Any electrical part has been inspected Any electrical parts must be

protected from water splash or mist

2. All the switch and gauge must function properly

3. Emergency Stop Button must function properly

Electrical Parts

Checks To Be Made


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Before starting the work, team members will agree on a code signals ormeans of communication to be use during operation.

Communication


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Questions

Documents

HP Jetting Awareness Rev 0