# The rules, explained by people who work to them

Inspection intervals, competent-person requirements, record rules, and the edition changes that catch people out — across LOLER, PUWER, AS 2550, AS/NZS 1891, ASME B30, and ANSI/ASSP Z359. Each guide cites the primary source and pairs with a free template.

## AS 2550
**The 10-Year Crane Major Inspection Under AS 2550: Triggers, Scope, and Cost**  
What triggers a major inspection under AS 2550.1, what a compliant tear-down actually involves, what it costs, and the decision owners face at end of design working period: major inspection, or retire and replace.  
[Read the guide](/content/guides/as-2550-crane-major-inspection/index.html)

## ASME B30.9
**ASME B30.9 Sling Inspection Requirements: Initial, Frequent, and Periodic**  
The three inspection levels ASME B30.9 requires for slings — initial on receipt, frequent every day or shift of use, and recorded periodic inspections — plus how OSHA 1910.184 and 1926.251 relate, and the removal-from-service criteria for chain, wire rope, web, and roundslings.  
[Read the guide](/content/guides/asme-b30-9-sling-inspection-requirements/index.html)

## AS/NZS 1891.4
**AS/NZS 1891.4:2025: What Changed for Height Safety Inspections**  
AS/NZS 1891.4:2025 has superseded the 2009 edition. What the retitled standard changes for inspection intervals, anchor proof testing, and the six-monthly harness inspection — and what inspection businesses need to update now.  
[Read the guide](/content/guides/asnzs-1891-4-2025-changes/index.html)

## OSHA / ANSI Z359
**Competent vs Qualified vs Authorized Person in Fall Protection (OSHA & ANSI Z359)**  
What OSHA actually means by competent person, qualified person, and authorized person under 29 CFR 1926.32 — and how ANSI/ASSP Z359.2-2023 builds those roles into a managed fall protection program, including who inspects harnesses and how often.  
[Read the guide](/content/guides/competent-vs-qualified-person-fall-protection/index.html)

## CSA B167 / Z150
**Crane & Lifting Equipment Inspection Requirements in Canada**  
How crane inspection works across Canada — the provincial OH&S split, the CSA standards that govern (B167 overhead, Z150 mobile, Z248 tower), log book requirements, annual inspection floors in Ontario, BC, Alberta, and Quebec, and where professional engineers must sign off.  
[Read the guide](/content/guides/crane-inspection-requirements-canada/index.html)

## LOLER 1998
**Who Counts as a LOLER Competent Person?**  
What "competent person" actually means under LOLER 1998 — the knowledge and experience test, the independence expectations for in-house examiners, how it differs from the person who plans lifts, and what evidence of competence looks like in the lifting industry.  
[Read the guide](/content/guides/loler-competent-person/index.html)

## LOLER 1998
**Does an Excavator Need a LOLER Thorough Examination?**  
When an excavator counts as lifting equipment under LOLER 1998 — the HSE position on excavators used for lifting, what the thorough examination covers, the 12-month interval, quick hitch rules, and what PUWER still requires for machines that only dig.  
[Read the guide](/content/guides/loler-excavator-thorough-examination/index.html)

## LOLER 1998
**LOLER Inspection Frequency: The 6-Month and 12-Month Rules Explained**  
How often lifting equipment needs a thorough examination under LOLER 1998 — the 6-month rule for accessories and people-lifting equipment, the 12-month rule for everything else, and when an examination scheme lets you set your own intervals.  
[Read the guide](/content/guides/loler-inspection-frequency/index.html)

## PUWER 1998
**What PUWER Actually Requires: Maintenance vs Inspection (Reg 5 vs Reg 6)**  
PUWER 1998 does not require every piece of work equipment to be formally inspected. Regulation 5 maintenance applies to everything; Regulation 6 inspection only applies in specific conditions. Here is the boundary — and where LOLER takes over.  
[Read the guide](/content/guides/puwer-maintenance-vs-inspection/index.html)