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For testing handholds should be tugged away from the anchorage point and rocked sideways. Slight give is likely. Excessive movement should be corrected by tightening bolts or renewing compound. Evidence of cracking at the bolt holes in a fibreglass skin should be noted, and larger load spreading plates fitted.

Anchorage plates should rest on a bedding of flexible compound that will prevent water penetrating the hull and corroding the bolts. Withdraw sample bolts annually. Corrosion of galvanized bolts is easy to assess. Marine 316 stainless steel bolts should be held by the head in a vice and bent, to check for crevice corrosion.

Drain holes in the bottom of an anchorage point should be Stainless Steel Crew Welding should be inspected for fracturing and cracking. Clevis pins or bolts should be fitted to hold the stanchion in the anchorage plate. All must be made of compatible metals, with no excessive corrosion. Stanchions should be straight and free from corrosion – look particularly carefully at the point where it rests against the top of the anchorage plate. Apertures to hold the lifelines should be smooth and bushed if necessary, so that wires are not kinked or worn.

Stanchions should be designed to withstand severe and suddenly applied loads. Test them when you have the opportunity to repair or reinforce them. Pull the top of the stanchion inwards, and press it outwards with your foot. Check for flexing and cracking at the anchorage point, and for evidence of loose fastenings at the deck.

Published at: Recent Health Articleshttp://recenthealtharticles.org

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