Cleaning cargo hold upper frames without scaffolding: how rope access works in bulk carrier holds

Why the upper structure is the hard part

From the tank top, you can hit the upper frames with a combi-gun or cannon. It'll remove loose dust. But by the time the jet travels 12 to 15 metres, it's lost most of its cleaning power, and it's hitting the underside of brackets at an angle that misses the top faces where the residue lies. You can't apply chemicals evenly from that distance, and you can't see what you've missed.

To clean the upper structure properly you need to get a person with an HP lance within a metre or two of the steel. There are four ways to do that.

The four ways to reach upper frames

How do rope access technicians clean upper frames?

Rope access technicians rig two independent lines (a working line and a back-up safety line) from secure anchor points at the hatch coaming or other strong structure. They descend into the hold on the working line, with the back-up line ready to catch them if the first one fails.

Once on the ropes, they can move up, down and sideways across the frames and bulkheads. Each technician works at arm's length from the steel with:

• An HP lance (fed from a pump on deck or in the hold)
• A chemical sprayer for pre-treatment
• Scrapers and brushes for loose rust and stubborn residue
• A torch and camera for close inspection

They work methodically down each section, cleaning the top faces of brackets, the backs of frames and the stiffener flanges that ground-based methods miss.

How do you clean cargo holds above 7 metres?

Seven metres is roughly where ladders, poles and lances from the tank top stop being useful. Above that, you need one of the access methods above. For most bulk carriers, rope access is the quickest because there's nothing to build, nothing to lift into the hold, and the same team can move from hold to hold quickly.

Can cargo holds be cleaned without scaffolding?

Yes. Rope access was developed precisely to reach places where scaffolding is slow or impractical. In cargo holds it's especially useful because:

• Holds are large, open spaces with good anchor points at the coaming
• Staging takes hours to rig and strike in each hold
• Cherry pickers need a crane and may not be allowed alongside
• Rope access works at anchorage and at sea, where other methods often don't

Is rope access safer than scaffolding?

Done properly, rope access has a strong safety record. IRATA publishes annual safety statistics for its member companies. The safety comes from the system: two independent ropes, certified equipment, a supervisor (Level 3) on site, and a written rescue plan for every work location so a technician who gets into difficulty can be brought down quickly.

Scaffolding has its own risks: falls during erection and dismantling, dropped materials, and the manual handling of heavy components through hatch openings. Neither method is automatically safer. What matters is that the work is planned, supervised and done by competent, certified people.

What certifications should rope access technicians have?

IRATA certification is the most widely recognised standard internationally. IRATA has three levels:

• Level 1: works under supervision of a Level 3
• Level 2: can rig and carry out rescues under supervision of a Level 3
• Level 3: supervises rope access work, responsible for the work site and rescue plan

On a ship, rope access technicians also need the same documentation as any riding crew if they're working at sea (STCW basic safety, medical, visas). Check they're familiar with enclosed space entry procedures, since a cargo hold is an enclosed space.

How many rope access technicians are needed?

For a typical five-hold bulk carrier, a team of four to eight technicians, including a Level 3 supervisor, is common. The exact number depends on how much of the upper structure needs work, the previous cargo, the time available and how many holds are being worked at once. Team sizes scale up for larger ships or tighter deadlines.

Can rope access crew remove rust and paint holds too?

Yes. Rope access isn't only for washing. The same technicians can:

• Remove loose rust and scale with hand and power tools
• Spot-prime and touch up damaged coating
• Carry out close-up inspection and photography for class or the owner's superintendent
• Do minor repairs where permitted

That makes rope access useful for hold maintenance as well as cleaning, especially on the upper structure where defects are hardest to reach. We'll cover hold painting and coating repair in a dedicated guide.

How does rope access reduce cleaning time?

The time saving comes from three places:

1. No access set-up. No staging to build, no cherry picker to lift in.
2. Close-range cleaning. The first pass on the upper frames is usually good enough, so there are fewer re-cleans.
3. It works on passage. A rope access team can ride the ship and clean during the ballast leg, with no port time used.

For a full picture, read our guides on how long hold cleaning takes and on riding crews.

Getting a rope access team on board

We provide IRATA-certified technicians for hold cleaning, inspection and coating work at height, in port or on passage. Find out more about our rope access hold cleaning service, or tell us about the vessel and timeline.