The course is aimed at experienced gas operatives who wish to carry out tightness testing and direct purging of commercial/industrial installation pipework where the volume exceeds 1m³.
It covers the skills and knowledge required to ensure pipework is safe and compliant, including leak-testing and purging procedures, before commissioning or re-commissioning gas installations.
Core topics and modules covered include:
- Tightness testing (soundness testing) of installation pipework.
- Direct purging of installation pipework.
- Volume calculations and assessments of pipework (to verify > 1 m³ volume).
- Risk assessment and safety procedures for high-pressure installations (natural gas up to 16 bar, LPG up to 2 bar).
- Practical exercises and assessments to verify compliance in testing and purging.
The course is aimed at experienced gas operatives working in or moving into the commercial/industrial gas sector, especially those dealing with large-volume pipework installations.
Entry Prerequisite:
Delegates must already hold a core or changeover commercial gas safety qualification to attend this course, such as:
- COCN1 (Core Commercial Gas Safety)
- CODNCO1 (Changeover Domestic to Commercial Gas Safety)
- Or equivalent core catering/LPG or domestic-to-commercial gas safety certification.
Pre-Course Reading:
Delegates are strongly recommended to acquire a recognised Gas Safety Training Manual beforehand.
On successful completion, delegates receive certification in TPCP1, authorising them to perform tightness testing and purging of commercial/industrial pipework > 1 m³ in volume (natural gas up to 16 bar, LPG up to 2 bar).
As with other ACS gas safety modules, certification requires periodic renewal to remain valid.
TPCP1 Testing and Purging (>1m³ in Volume) Training Course FAQs
About the Course
Q1. What is the TPCP1 Testing & Purging (>1m³) course?
This course is aimed at experience gas operatives who work on large commercial or industrial pipework. It covers tightness testing and direct purging of systems over 1 m³, including natural gas up to 16bar and LPG up to 2 bar, following IGE/UP/1 procedures.
_________________________________________________________________________________
Q2. How long is the course?
The course runs for 3 days, combining classroom-theory with practical hands-on training/assessment.
__________________________________________________________________________
Q3. What will delegates do during the course?
The course covers pre-use checks, pipework calculations, hazard awareness, tightness testing, and direct purging techniques, following IGE/UP/1 procedures.
_________________________________________________________________________________
Who Should Attend
Q4. Who should take this course?
Experienced commercial gas operatives responsible for commissioning, testing, or purging pipework exceeding 1 m³ in volume, in commercial or industrial installations.
_________________________________________________________________________________
Q5. Are there any entry requirements for this course?
Yes. Delegates must hold a valid Core Commercial Gas Safety certificate or equivalent to attend this course and have a good understanding of written and spoken English. Delegates should be in good health and physically able to take part in practical activities. If you have any medical/fitness concerns, please contact us before booking on 0345 605 0006 or email training@hss.com.
_________________________________________________________________________________
How the Training Works
Q6. How is the course delivered?
Training is conducted in-person, combining classroom theory with hands-on practical exercises on large-volume pipework, guided by a qualified trainer.
__________________________________________________________________________
Q7. What should delegates bring on the day?
Delegates are required to bring PPE, including safety boots, hi-vis vest/jacket, hard hat (preferably chin strap), protective gloves, eye protection and suitable clothing that includes a long sleeve top and trousers (shorts are not permitted). Where practical demonstrations are conducted outside, delegates must wear suitable waterproof clothing.
For further guidance on PPE or you need help sourcing items, please contact our team on 0345 605 0006 or email training@hss.com before your course start date, we'll be happy to help.
_________________________________________________________________________________
Q8. Is there parking available at the training centre?
Most of our training venues offer free on-site parking, although spaces may be limited. You’ll receive full parking details, including What3Words navigation, in your joining instructions once your booking is confirmed. Alternatively, you can find parking availability and other venue details on our Training Centres information page
______________________________________________________________________________
Assessments & Certification
Q9. How is the course assessed?
Assessment includes written and practical assessments covering pre-use checks, tightness testing, and direct purging of large-volume pipework that follows ACS guidance.
__________________________________________________________________________
Q10. What certification will I receive?
Successful delegates who complete the required assessment(s) for this course will receive a LCL certificate and identification card, valid for 5 years. Certificates can take up to 28 working days to be processed. If you haven't received your certificate after this time please email trainingadmin@hss.com.
_________________________________________________________________________________
Delegate Support & Accessibility
Q11. What support is available if I have additional needs or require adjustments?
At HSS Training, we are committed to providing an inclusive and supportive learning environment. If you’re neurodivergent, have a disability, have a specific learning need, or English isn’t your first language, please refer to our reasonable adjustments guide.
_________________________________________________________________________________
Still Have Questions?
If you need further support please contact us on 0345 605 0006, use our live chat or email training@hss.com
_________________________________________________________________________________
The course is aimed at experienced gas operatives who wish to carry out tightness testing and direct purging of commercial/industrial installation pipework where the volume exceeds 1m³.
It covers the skills and knowledge required to ensure pipework is safe and compliant, including leak-testing and purging procedures, before commissioning or re-commissioning gas installations.
Core topics and modules covered include:
- Tightness testing (soundness testing) of installation pipework.
- Direct purging of installation pipework.
- Volume calculations and assessments of pipework (to verify > 1 m³ volume).
- Risk assessment and safety procedures for high-pressure installations (natural gas up to 16 bar, LPG up to 2 bar).
- Practical exercises and assessments to verify compliance in testing and purging.
TPCP1 Testing and Purging (>1m³ in Volume) Training Course FAQs
About the Course
Q1. What is the TPCP1 Testing & Purging (>1m³) course?
This course is aimed at experience gas operatives who work on large commercial or industrial pipework. It covers tightness testing and direct purging of systems over 1 m³, including natural gas up to 16bar and LPG up to 2 bar, following IGE/UP/1 procedures.
_________________________________________________________________________________
Q2. How long is the course?
The course runs for 3 days, combining classroom-theory with practical hands-on training/assessment.
__________________________________________________________________________
Q3. What will delegates do during the course?
The course covers pre-use checks, pipework calculations, hazard awareness, tightness testing, and direct purging techniques, following IGE/UP/1 procedures.
_________________________________________________________________________________
Who Should Attend
Q4. Who should take this course?
Experienced commercial gas operatives responsible for commissioning, testing, or purging pipework exceeding 1 m³ in volume, in commercial or industrial installations.
_________________________________________________________________________________
Q5. Are there any entry requirements for this course?
Yes. Delegates must hold a valid Core Commercial Gas Safety certificate or equivalent to attend this course and have a good understanding of written and spoken English. Delegates should be in good health and physically able to take part in practical activities. If you have any medical/fitness concerns, please contact us before booking on 0345 605 0006 or email training@hss.com.
_________________________________________________________________________________
How the Training Works
Q6. How is the course delivered?
Training is conducted in-person, combining classroom theory with hands-on practical exercises on large-volume pipework, guided by a qualified trainer.
__________________________________________________________________________
Q7. What should delegates bring on the day?
Delegates are required to bring PPE, including safety boots, hi-vis vest/jacket, hard hat (preferably chin strap), protective gloves, eye protection and suitable clothing that includes a long sleeve top and trousers (shorts are not permitted). Where practical demonstrations are conducted outside, delegates must wear suitable waterproof clothing.
For further guidance on PPE or you need help sourcing items, please contact our team on 0345 605 0006 or email training@hss.com before your course start date, we'll be happy to help.
_________________________________________________________________________________
Q8. Is there parking available at the training centre?
Most of our training venues offer free on-site parking, although spaces may be limited. You’ll receive full parking details, including What3Words navigation, in your joining instructions once your booking is confirmed. Alternatively, you can find parking availability and other venue details on our Training Centres information page
______________________________________________________________________________
Assessments & Certification
Q9. How is the course assessed?
Assessment includes written and practical assessments covering pre-use checks, tightness testing, and direct purging of large-volume pipework that follows ACS guidance.
__________________________________________________________________________
Q10. What certification will I receive?
Successful delegates who complete the required assessment(s) for this course will receive a LCL certificate and identification card, valid for 5 years. Certificates can take up to 28 working days to be processed. If you haven't received your certificate after this time please email trainingadmin@hss.com.
_________________________________________________________________________________
Delegate Support & Accessibility
Q11. What support is available if I have additional needs or require adjustments?
At HSS Training, we are committed to providing an inclusive and supportive learning environment. If you’re neurodivergent, have a disability, have a specific learning need, or English isn’t your first language, please refer to our reasonable adjustments guide.
_________________________________________________________________________________
Still Have Questions?
If you need further support please contact us on 0345 605 0006, use our live chat or email training@hss.com
_________________________________________________________________________________
The course is aimed at experienced gas operatives working in or moving into the commercial/industrial gas sector, especially those dealing with large-volume pipework installations.
Entry Prerequisite:
Delegates must already hold a core or changeover commercial gas safety qualification to attend this course, such as:
- COCN1 (Core Commercial Gas Safety)
- CODNCO1 (Changeover Domestic to Commercial Gas Safety)
- Or equivalent core catering/LPG or domestic-to-commercial gas safety certification.
Pre-Course Reading:
Delegates are strongly recommended to acquire a recognised Gas Safety Training Manual beforehand.
On successful completion, delegates receive certification in TPCP1, authorising them to perform tightness testing and purging of commercial/industrial pipework > 1 m³ in volume (natural gas up to 16 bar, LPG up to 2 bar).
As with other ACS gas safety modules, certification requires periodic renewal to remain valid.
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