Confined Space Tripod

Confined Space Accessories Buying Guide

What a confined space tripod does, and why it is an anchor first. A tripod is an anchorage connector before it is anything else: its whole job is to hold a pulley over the center of the opening so the retrieval line pulls a worker vertically instead of dragging them against the shaft wall. The Globestock SENTRY is certified to EN 795:2012 Type B and CEN/TS 16415 in Europe and to ANSI/ASSP Z359.18-2017 Type A in the US, and a Type A anchorage connector is tested to a 5,000 lb static load. That rating is the reason a purpose-built tripod goes over the hole rather than a scaffold pole or a length of angle iron. The tripod is one piece of a larger entry program, and the full picture, from atmospheric testing to the attendant at the opening, lives in the confined space rescue equipment hub.

Buy the SENTRY as a kit, not as loose parts. The tripod, the bracket, and the lifeline are tested as a system, so the Globestock SENTRY here ships as a complete kit: the SENTRY tripod, a one-piece mounting bracket, and a SAVER self-retracting lifeline rated to 310 lb, from about $4,059 to $5,563. The choice inside that range is head height and cable. The SAVER comes in galvanized steel for general work, stainless steel for wet, corrosive, or wash-down spaces like wastewater vaults, and a synthetic web version, with cable lengths matched to the bracket so the drop reaches the bottom of the space. A kit settles the compatibility questions before delivery, which matters most on the parts nobody double-checks, the bracket that has to fit the leg and the receiver the device bolts into.

Compact or standard: the head height decides the reach. The SENTRY comes in two models. The Compact (GSE230C) packs down shorter for tight setups and transport, while the Standard (GSE230S) reaches about 2,307 mm, roughly 7.6 ft, at its highest setting, which raises the pulley higher over the opening and gives a recovered worker more clearance to clear the lip. Both use two-part telescopic aluminum legs pinned to length, a collapsible head, and auto-leveling feet with a spiked edge for soft ground and rubber pads for hard floors. Eyebolts in the lower legs take a safety chain that stops the legs from splaying under load, which is the failure a tripod has to be set up to prevent. The SENTRY carries 250 kg for loads and 200 kg for personnel and is rated for two people at once.

The mounting bracket is what the device bolts to. A tripod does nothing until the retrieval device is fixed to it, and the SAVER/STOP one-piece mounting bracket for the SENTRY tripod, from $424 to $545, is that link. It clamps to a tripod leg and gives the SAVER lifeline a tested seat, in lengths matched to the cable, 33 to 46 ft or 82 to 112 ft. Buy the bracket built for your device rather than the one that looks close, because a mismatched bracket is where an otherwise sound rig fails. When the entry calls for a controlled crank-down instead of a retracting line, the confined space winches go on the same frame, and for fall arrest with integral rescue in one housing, the 3-way SRL-R units live in rescue lifelines.

Davit receivers for openings a tripod cannot straddle. When the opening sits against a wall, offset from a clear floor, or too wide for three legs to bracket it, a davit arm reaches over the edge instead, and the davit needs a receiver bolted to the structure to drop into. The KStrong Megadavit column mast receivers here are SS316 stainless for concrete embed, floor mount, and wall mount, from about $532, so the anchor point matches whatever surface the job gives you. The receiver is the cheapest part of a davit rig and the one that has to be installed correctly, because everything above it depends on that seat. The complete Megapod tripod and Megadavit davit kits, basic through deluxe, are in rescue and recovery kits; the receivers here are the foundations those davit systems land on.

Accessories that keep a tripod ready to deploy. A confined space rig that lives in a truck and gets set up in a hurry needs the small parts that protect it and speed the setup. The KStrong Megapod storage bag, around $144 for the 7 ft and 10 ft models, keeps the tripod and its head clean and together between entries, and the Megapod chain link assembly, from about $213, is the leg-restraint hardware that holds the spread. Whatever the accessory, the same inspection discipline applies as the rest of the fall protection program: check the legs, feet, head pulley, bracket, and lifeline before every use, pull anything that has arrested a fall, and log the periodic competent-person inspection. The tripod is only as trustworthy as the last time someone looked at it closely.