---
title: Technical Guidance
description: Get expert guidance on equipment inspection, calibration, and NDT methods. Ensure compliance and make informed decisions with support from experienced professionals.
image: https://deg.nz/hubfs/1761183481644-1.jpg
---
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##### RESOURCES
## TECHNICAL GUIDANCE
##### HANDS-ON ADVICE FROM PEOPLE WHO KNOW THE KIT.
Practical, technically sound guidance on inspection, calibration, NDT, structural assessment, and the day-to-day decisions that keep equipment compliant. Written for engineers, asset managers, maintenance leads, and anyone who has to make defensible decisions about whether equipment goes back into service.
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###### NDT
##### CHOOSING THE RIGHT NDT METHOD
VT, UT, PAUT, MT, PT, RT, ET – which method suits which defect type, and when phased array adds value over conventional UT.
[Learn more...](https://deg.nz/insights/choosing-the-right-ndt-method?hsLang=en-nz)
###### CALIBRATION
##### WHY VISUAL CHECKS ON INSULATING GLOVES AREN'T ENOUGH
Air inflation testing, dielectric testing, and what Class 0–4 actually means – the standard your insurer expects.
[Learn more...](https://deg.nz/insights/why-visual-checks-on-insulating-gloves-arent-enough?hsLang=en-nz)
###### NDT
##### PHASED ARRAY UT VS CONVENTIONAL UT
When PAUT is the right choice, what it adds in terms of defect characterisation, and when conventional UT is sufficient.
[Learn more...](https://deg.nz/insights/title-phased-array-ut-vs-conventional-ut-when-paut-is-worth-it?hsLang=en-nz)
---
###### WELDING
##### HOW TO QUALIFY A WELDING PROCEDURE
The WPS, PQR, and welder record process under AS/NZS 1554 – what's required, who signs what, and what onsite testing actually involves.
[Learn more...](https://deg.nz/insights/how-to-qualify-a-welding-procedure?hsLang=en-nz)
###### EWP
##### WHAT TO LOOK FOR ON A 5-YEAR EWP MAJOR
The AS 2550.10 5-year major inspection scope – structural, mechanical, and electrical checks, plus the acoustic emission test on fibreglass booms.
[Learn more...](https://deg.nz/insights/what-to-look-for-on-a-5-year-ewp-major?hsLang=en-nz)
###### PRESSURE EQUIPMENT
##### PECPR INSPECTION SCOPE BY EQUIPMENT TYPE
What's in scope for pressure vessel, boiler, and pressure piping inspections under PECPR Regs 1999 – and what a compliant inspection report needs to contain.
[Learn more...](https://deg.nz/insights/pecpr-inspection-scope-by-equipment-type?hsLang=en-nz)
### GOT A TECHNICAL QUESTION?
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