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Technician level of accreditation (TGPV)

Intended for field technicians who confine their work to inspections and do not prepare verification design or method statements (although they will follow ones prepared by others) and do not prepare verification reports (although they do prepare field records that form part of the verification report. 

Specialist level of accreditation (SGPV)

Applies to those involved in the whole range of gas protection verification including design of the verification, preparation of method statements, inspections and verification reports.

The competencies required are as follows:

K1 Interpretation of information TGPV SGPV
i) The information required to develop a verification method statement   X
ii) Where the information is likely to be obtained   X
iii) The difference between a verification plan and verification method statement X X
K2 Safe working practices TGPV SGPV
i) Relevant, current legislation and official guidance and how it is applied to  verification X X
ii) How emergencies should be responded to and who should respond X X
iii) What the accident reporting procedures are and who is responsible for making the report X X
iv) Why, when and how health and safety control equipment should be used X X
v) How to comply with environmentally responsible working practices to meet current legislation and official guidance X X
vi) Recognise high risk work areas that require special consideration (eg confined spaces or working at heights) X X
K3 Contracting and programming issues TGPV SGPV
i) How methods of work, to meet the specification for verification, are carried out and problems reported X X
ii) How to protect completed installation work from damage and the purpose of protection X X
iii) Understands when to carry out verification to minimise risk of damage post - verification X X
iv) The impact of build programme on the verification and testing works and suitable test methods X X
K4 Types of protection and methods of installation TGPV SGPV
i) Different types of protection and types of gas membrane X X
ii) The types of installation that are appropriate to different systems or membranes X X
iii) Key problems that can occur with different systems or membranes X X
K5 Construction drawings and specification TGPV SGPV
i) How to interpret construction drawings for the building structure and the gas protection systems to identify key watch points for the verification   X
ii) How to interpret specifications for gas protection systems   X
iii) When to ask the designer for advice or clarification X X
iv) Any health and safety issues that may arise in carrying out the verification works   X
v) How to interpret manufacturer’s information and advice X X
K6 Verification plans TGPV SGPV
i) A risk based approach to the required contents of a verification plan and responsibility for its preparation   X
ii) How to interpret a verification plan prepared by the designer and confirm the verification process can be completed safely and practically   X
iii) How to prepare one based on the design of the protection measures    X
iv) The main contents of a verification plan X X
v) The need to consult with designer if preparing a verification plan   X
vi) The need to check the competence of the installers and how to do this X X
K7 Choice of verification and test methods TGPV SGPV
i) How to select appropriate Verification and Test Methods and when each approach is appropriate X X
ii) Visual inspection, seam tests, flat area tests, ventilation and pressure monitoring X X
iii) How to choose an appropriate frequency of testing and the main advantages and disadvantages of integrity testing methods X X
iv) The standard method statements for integrity testing from appropriate standards X X
i) When to provide advice and when to refer to the designer. X X
ii) When and how to provide advice on protecting gas membranes from damage post-verification X X
K9 Validation reports TGPV SGPV
i) What a validation report should include including daily record sheets, photos, etc.    X
ii) How to report and deal with defects and repairs X X
K10 Independence TGPV SGPV
i) The importance of verifiers being independent of the gas protection system supplier or installer X X
K11 Understanding of other specialisms TGPV SGPV
i) When additional specialist skills may be required, for example to carry out integrity testing X X
K12 GPVS Declaration of Compliance TGPV SGPV
i) Understand the purpose of the GPVS Declaration   X
ii) Know how to distribute a GPVS Declaration   X


P1 Safe working practices TGPV SGPV
i) Safe working practices during the practical assessment X X
P2 Apply the requirements of a verification plan TGPV SGPV
i) That you can visually inspect underfloor voids, oversite capping, venting layers and gas membranes in accordance with a verification plan X X
P3 Identify faults and damage TGPV SGPV
i) You can identify faults including; poor preparation of laying surface, poor seals, damage, missing components, poor workmanship and blockages etc X X
ii) You can identify discrepancies in installed gas membranes including; holes, rips, tears, punctures, missing seals, loose or unstuck tape, inadequate detailing and unbonded seams (loose edges and fish mouths X X
P4 Integrity tests TGPV SGPV
i) That you can critically observe and assess integrity testing completed by others X X