Safety And Economics for Working Platforms â€“ A UK Perspective-PPT Presentation

PPT Presentation

Pdf Summary

The UK working-platform process has improved safety and reduced costs over the past 20 years. In 2000, about one-third of dangerous occurrences reported by FPS members involved working platforms. Since the Working Platform Certificate was introduced, rig overturns and near-overturns have reportedly fallen to between zero and two per year.<br /><br />The process combines rig-loading design, site inspection and construction, testing, and clearly assigned responsibilities. However, design depends on the quality of available rig-loading data, and loading assumptions must be compatible with the platform design method. Platform bearing capacity cannot be treated as a single value: results depend on the platform material and subgrade, the size and distribution of the load, and the area tested. Plate-load testing can help determine platform parameters, while simple stability checks can identify overturning risks that do not involve bearing-capacity failure.<br /><br />Lightweight deflectometers may offer faster, cheaper site testing than plate-load tests, but research is still underway to establish whether their results can be reliably calibrated and used to verify platform properties.<br /><br />Key priorities are to control procedures, record soft spots and backfilled areas, define platform edges through their full depth, and specify who is responsible for design, construction, and maintenance. Testing-supported design can help avoid both unsafe assumptions and unnecessary overdesign. The approach must remain simple enough to be used in practice.

Keywords

working platform

site safety

rig overturn

plate-load testing

bearing capacity

subgrade

site inspection

platform design

load distribution

lightweight deflectometer