Singapore Confined Space Safety Assessor & Rescuer
CSSA • CSER • Gas Testing • Confined Space Entry Support • Rescue Standby
Need a Confined Space Safety Assessor (CSSA) or Confined Space Rescuer (CSER) in Singapore?
I provide freelance confined-space safety support for construction, engineering, industrial, marine and other workplaces where confined-space entry requirements apply.
Need a CSSA or Confined Space Rescuer?
Singapore Islandwide Service
From S$300, depending on the duration, location, work conditions, equipment requirements and scope of work.
Call / WhatsApp: 9775 4288
Email: tankoonpeng@gmail.com
Confined Space Safety Assessor Singapore
A Confined Space Safety Assessor (CSSA) is a competent person appointed for the duties associated with confined-space safety assessment.
Under Singapore's Workplace Safety and Health (Confined Spaces) Regulations 2009, before a person enters or works in a confined space, the responsible person must appoint a person reasonably believed to be competent to perform the duties of a confined space safety assessor and ensure that a confined-space entry permit has been issued.
The regulations also specify requirements concerning evaluation, atmospheric testing, monitoring and the confined-space entry permit.
What Does a Confined Space Safety Assessor Do?
Depending on the specific workplace and job requirements, CSSA duties may include:
- Assessing atmospheric conditions before entry
- Testing oxygen concentration
- Testing for flammable gases or vapours
- Testing for applicable toxic gases or vapours
- Recording atmospheric test results
- Evaluating confined-space entry conditions
- Supporting the confined-space entry permit process
- Conducting periodic atmospheric testing where required
- Identifying changing atmospheric hazards
- Supporting safe confined-space entry arrangements
Confined Space Gas Testing Singapore
Atmospheric testing is an important part of confined-space entry safety.
Depending on the hazards identified at the workplace, testing may include:
- Oxygen (O₂)
- Flammable gases / LEL
- Hydrogen sulphide (H₂S)
- Carbon monoxide (CO)
- Other toxic gases or vapours where applicable
Singapore's regulations specify that the CSSA shall use a suitable and properly calibrated instrument and conduct atmospheric testing in the prescribed sequence: oxygen, flammable gas or vapour, and applicable toxic gas or vapour.
Confined Space Entry Permit Singapore
A confined-space entry permit is an important part of the Singapore confined-space control system.
The regulations require the permit to contain information including the description and location of the confined space, the purpose of entry, atmospheric gas-testing results and its period of validity.
Before entry, the atmosphere must be tested and the relevant conditions evaluated.
The authorised manager is responsible for the issue of the confined-space entry permit when the applicable requirements are satisfied.
Confined Space Rescuer / Rescue Standby Singapore
Confined-space work can involve serious hazards, and appropriate emergency and rescue arrangements should be established before work begins.
Depending on the specific job, rescue arrangements may involve:
- Rescue procedures
- Emergency communication
- Harnesses
- Retrieval systems
- Breathing apparatus
- Rescue equipment
- Trained rescue personnel
- Emergency response arrangements
The Singapore regulations contain specific provisions relating to rescue operations. Rescue arrangements should therefore be planned according to the actual confined space, hazards, access and egress arrangements, work activities and available equipment.
Types of Confined Spaces
Confined-space safety services may be relevant to work involving:
- Tanks
- Manholes
- Vessels
- Silos
- Pits
- Sumps
- Chambers
- Pipes
- Flues
- Underground structures
- Other enclosed spaces meeting the applicable definition
Confined Space Risk Assessment Singapore
A confined-space job should be evaluated according to its actual hazards and work conditions.
Potential hazards may include:
- Oxygen deficiency or enrichment
- Toxic gases and vapours
- Flammable gases and vapours
- Fire and explosion
- Engulfment
- Flooding or liquid ingress
- Mechanical hazards
- Electrical hazards
- Falls
- Heat stress
- Poor ventilation
- Difficult access and egress
- Rescue difficulties
Controls should be determined through the appropriate workplace risk-assessment and safe-work processes.
See also: Confined Space Risk Assessment Singapore
Confined Space Gas Testing Checklist
- Confirm the confined space and work location
- Identify potential atmospheric hazards
- Use a suitable gas detector
- Confirm the instrument is properly calibrated
- Test oxygen
- Test flammable gases / LEL
- Test applicable toxic gases
- Record test results
- Evaluate the atmosphere before entry
- Continue monitoring according to the applicable requirements and site controls
- Establish procedures for responding to hazardous atmospheric conditions
What Happens If a Hazardous Atmosphere Is Detected?
If atmospheric testing or required continuous monitoring detects a hazardous atmosphere, workers should not simply continue working.
Singapore's regulations specify that, when a hazardous atmosphere is detected in the circumstances covered by Regulation 16, persons in the confined space are to vacate immediately, the cause of the hazardous atmosphere is evaluated, and re-entry is not permitted until a new confined-space entry permit is issued by the authorised manager.
Who May Need a Confined Space Safety Assessor?
Companies and contractors carrying out confined-space work may require CSSA support for projects involving:
- Construction
- Industrial maintenance
- Engineering work
- Plant maintenance
- Tank cleaning
- Tank inspection
- Manhole work
- Vessel work
- Utility work
- Underground structures
- Other confined-space activities
How Much Does a Confined Space Assessor Cost in Singapore?
Freelance confined-space safety services from S$300, subject to the actual job requirements.
The final quotation may depend on:
- Number of hours
- Location
- Day or night work
- Weekend or public-holiday work
- Number of workers
- Type of confined space
- Gas-testing requirements
- Rescue requirements
- Equipment requirements
- Duration of standby
- Urgency of the assignment
Contact me with your job details for a quotation.
Singapore Islandwide Confined Space Services
Freelance confined-space safety support can be provided at locations throughout Singapore, subject to availability and job requirements.
Potential service locations include industrial, construction, marine, engineering and other workplaces in areas such as:
- Jurong
- Tuas
- Pioneer
- Woodlands
- Yishun
- Mandai
- Changi
- Loyang
- Pasir Ris
- Tampines
- Other Singapore locations
Frequently Asked Questions
What is a CSSA?
CSSA stands for Confined Space Safety Assessor. Singapore's regulations define a confined space safety assessor as a person appointed under Regulation 9(b).
Is a CSSA required for confined-space entry?
Singapore's Workplace Safety and Health (Confined Spaces) Regulations 2009 contain requirements for appointment of a competent confined space safety assessor before entry or work in a confined space, subject to the applicable regulatory provisions.
What gases are normally tested?
Depending on the hazards, atmospheric testing may include oxygen, flammable gases or vapours and applicable toxic gases or vapours.
What is LEL?
LEL means Lower Explosive Limit. Gas detectors can be used to measure the concentration of flammable gas or vapour relative to its LEL.
What is H₂S?
Hydrogen sulphide is a toxic gas that may be relevant to certain confined-space environments. Whether it needs to be tested depends on the hazards associated with the specific workplace.
Do you provide confined-space rescue standby?
Rescue-support arrangements can be discussed according to the specific job, hazards, equipment and competency requirements.
How much does CSSA service cost?
Services start from approximately S$300, subject to the scope, duration, location and requirements of the job.
How do I request a quotation?
Provide the work location, date, duration, type of confined space, number of workers, work activity, gas-testing requirements and whether rescue standby is required.
Request a Confined Space Safety Assessor
Need a CSSA, CSER or confined-space gas-testing service in Singapore?
Send the job details for a quotation.
Call / WhatsApp: 9775 4288
Email: tankoonpeng@gmail.com
Singapore Islandwide • Freelance • From S$300
Singapore Regulatory Reference
This page provides general information and is not a substitute for reviewing the current legislation or obtaining competent professional advice for a specific workplace.
For the current Workplace Safety and Health (Confined Spaces) Regulations 2009, refer to Singapore Statutes Online.
Singapore Statutes Online – WSH (Confined Spaces) Regulations 2009
Last reviewed: September 2026.
I do not provide ventilation blowers, ladder, lighting and other rescue equipments so you have to provide your own.
All industries are welcome, construction, shipyards, oil/petrol chem, LTA projects (SMRT Depots and stations), PUB projects, manufacturing industry, tunnels, sump pits, tanks, drains, manhole, water tank cleaning etc.
IS THIS A CONFINED SPACE? | Identifying Confined Spaces
H2S Gas — What You Need to Know About Hydrogen Sulfide (blacklinesafety.com)
Confined Space Entry Training News and Blog (confinedspaceentrytrainingonline.com)
know-the-dangers-of-confined-spaces.pdf (wordpress.com)
Confined Spaces – Programs, Toolbox Talks – OSHA, HSE, WorkSafeBC (safetyresourcesblog.com)
E618 – Confined Space Safety Checklist and Entry Permit (cbsa-asfc.gc.ca)
Confined Space-(Types Of Confined Space,Hazards And Permit) (industrialsafetyguide.com)
Confined Space Entry - Go Home Safe
Near Death H2S Incident- Hamdan in Habshan, GASCO Abu Dhabi
Case Study 5: Solvent Vapour Poisoning in ISO Tank
Confined Space Ventilation
Case Study 3: Toxic Gas Poisoning in Manhole
Confined space: the dangers
H2S - Typical Sites and Locations
Hydrogen sulfide
Manhole Rescue Training
H2S and SO2: ABC's of Initial Response
10 most frequently asked questions and answers related to Confined Spaces - safety training
OSHA Confined Space Quiz (16 Questions With Fully Answers)
Safety in Confined Spaces - Case Study and Lessons Learnt (English)
Confined Spaces: Safe Yesterday, Deadly Today
Hi all.
I provide confined space assessing (CSSA) or confined space rescuer (CSER) services at an affordable rate of $300.
I am a freelance confined space safety assessor/rescuer!
I provide confined space assessing//rescuer at an affordable rate.
I have many years of experience in confined space jobs.
I do not provide ventilation blowers, ladder, lighting and other rescue equipments so you have to provide your own.
All industries are welcome, construction, shipyards(warships), oil/petrol chem, LTA projects (SMRT Depots and stations), PUB projects, manufacturing industry, tunnels, sump pits, tanks, drains, IPA tank, manhole etc.
Pls do contact me at 97754288 for enquiries.
or email me at tankoonpeng@gmail. com
SCBA Pre-Use Inspection and Check
Visual Inspection:
- Check the SCBA unit for any visible damage, wear, or cracks, including the harness, straps, and cylinder.
- Inspect the facepiece for any cracks, tears, or damaged components, including the lens and head straps.
- Ensure all straps and buckles are intact and functional.
Cylinder Check:
- Verify that the air cylinder is securely connected and fully charged to the appropriate pressure (usually 90% of full capacity).
- Check the hydrostatic test date on the cylinder. Replace if the cylinder is out of date.
- Inspect the cylinder valve for proper function.
Regulator and Valve Check:
- Ensure the regulator and valve are clean and free of debris.
- Check that the hoses are properly connected and free of damage.
Battery Check (if applicable):
- For units with electronic components, verify that the batteries are charged and functioning.
Functional Test:
- Turn on the SCBA unit by opening the cylinder valve fully.
- Check the air pressure gauge on the cylinder and the remote pressure gauge to ensure they read the same.
- Perform a regulator and bypass valve test to confirm air flows correctly.
Alarm and PASS Device Check:
- Check the functionality of the Personal Alert Safety System (PASS) device.
- Ensure the low-air alarm is functional by simulating low air conditions.
Communications Equipment (if applicable):
- Check the operation of any communication equipment attached to the SCBA.
Donning the SCBA
Prepare the SCBA:
- Lay the SCBA on the ground or a stable surface with the straps and harness open and accessible.
- Ensure the cylinder valve is closed, and all straps are fully extended.
Put on the Harness:
- Lift the SCBA and place your arms through the shoulder straps.
- Adjust the shoulder straps so the backplate rests comfortably on your back.
Secure the Waist Belt:
- Fasten the waist belt buckle securely and adjust it snugly to your waist.
- Ensure the waist belt carries the weight of the cylinder.
Tighten Shoulder Straps:
- Pull down on the shoulder straps to adjust the SCBA to fit your body snugly.
Facepiece Donning:
- Position the facepiece on your face, ensuring the chin is securely seated in the chin cup.
- Pull the head harness over your head and tighten the straps evenly for a snug fit.
Check Seal and Function:
- Perform a positive pressure test by blocking the exhalation valve and exhaling gently; the mask should pressurize.
- Conduct a negative pressure test by covering the inlet and inhaling; the mask should collapse slightly against your face.
Connect the Regulator:
- Attach the regulator to the facepiece. Confirm it is locked and secure.
- Open the cylinder valve slowly and fully.
Final Adjustments:
- Check all straps and connections for security and comfort.
- Ensure the SCBA is functioning properly and all indicators show it is ready for use.
Buddy Check:
- Have another rescuer perform a quick check of your SCBA to confirm everything is secure and functional.
During Use
Monitor Air Supply:
- Regularly check your air supply and gauge readings.
- Be aware of your surroundings and any changes in breathing resistance or alarms.
Communicate:
- Maintain communication with your team using hand signals or radio communication.
Emergency Procedures:
- In case of any equipment malfunction, immediately communicate with your team and follow emergency procedures for air supply issues or regulator failures.
After Use
Proper Removal:
- Remove the SCBA by reversing the donning procedure.
- Ensure you are in a safe area with fresh air before removing the facepiece.
Post-Use Inspection and Cleaning:
- Inspect the SCBA for any damage or wear.
- Clean and sanitize the facepiece and components according to department procedures.
Cylinder Replacement and Recharging:
- Replace the air cylinder with a fully charged one.
- Ensure the used cylinder is recharged and stored properly.
Documentation:
- Record the use, maintenance, and any issues in the SCBA log or record-keeping system.
By following these steps, rescuer can ensure their SCBA is properly checked, donned, and used, providing essential protection in hazardous environments.
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