How do we run safe shifts around heat and presses?

Four habits carry most of the load. Agree how long anyone stays at the hot face and who relieves them. Brief every shift at the press bay before the first load. Make the in-charge answerable for halting unsafe work, and support each halt. Then go through close calls with the crew and show what changed. Below, those habits become a plan an in-charge can actually run.

A compression or transfer press bay never cools during a shift. Platens radiate across the daylight gap, condensate traps spit behind the frames, and the transfer pot and plunger stay scalding between cycles. A mould change means wrestling steel halves that hold their heat for hours. Burns, pinched fingers and strained backs are not random. They gather late in a shift, in the small hours, through the pre-monsoon heat and among people in their first weeks.

Most plants plan who works which shift. Far fewer plan what happens inside it. A single sheet pinned beside the rota board gives the in-charge a sequence to follow, so safety does not depend on memory at four in the morning.

Before the first load: huddle at the board, guards and two-hand buttons tried on every press, gloves and sleeves inspected, water jug filled.
Every spell: nobody stays at the platen face beyond the posted spell, and the floater steps in on time.
Each cure cycle: hot bushes and grommets lifted with a stripping fork, air gun or tongs, never bare-handed.
Stuck part: press opened fully, shuttle table drawn out, part freed with a brass pick. No reaching into a half-open press.
Mould change: press isolated as its card says, lock-off tag hung, hydraulic pressure bled, two people for any heavy mould half.
Mid-shift: the in-charge walks the bay, asks each operator how they are holding up and refills the water point.
Small hours on nights: a second walk, no new joiner alone on a press, routine mould changes held for daylight.
Last half hour: hot moulds parked on marked trolleys, steam valves set as the card says, handover note written.
End of shift: close calls written on the card and initialled by the in-charge.

• Today's mould changes, the presses they affect and who does each one.
• Any press running hot, a steam header weeping, or a guard that sticks.
• Who has just joined, who is back from leave, and who is on a press they rarely run.
• Today's spell length and the floater's name.
• One close call from last week and what was changed because of it.

Hold it standing, at the bay, in the crew's own language. Tick attendance on the reverse of the shift plan. A huddle that drifts to whenever the in-charge finds a free minute soon stops happening at all.

Stop authority means little if the first halt draws an angry call from dispatch. Put it in writing: a press with a faulty guard, a hissing steam joint or an exhausted operator stays idle until it is put right. Then back the first few halts openly, with the crew watching. People learn the real rule from what follows when a press goes quiet.

That depends on the part, the cure time and the mould weight, so no single figure fits. Fix a written ceiling per part family. Watch for missed timers, rushed stripping and climbing scrap, and lower the ceiling when they show. Piece pay that rewards an extra press pulls the opposite way, so check that the incentive does not quietly cancel the ceiling.

Attention sags in the small hours, and fewer senior hands are around. Place an experienced operator on every night crew. Push routine mould changes into daylight where possible. Keep newcomers on days through their opening weeks. Make the second walk a fixed time on the plan, not a hope.

Shorten the spells. Put a cool-down point with a pedestal fan and drinking water just outside the bay. Shift heavy mould work to the cooler hours, and watch the afternoon crew most closely, because the roof sheeting keeps radiating long after noon. Absence tends to rise after several scorching days, so arrange cover in advance instead of stretching whoever turns up.

• Near-miss cards arrive every week, and the crew can name one change each led to.
• Spells are kept on the record, busy days included.
• Small burns are logged the same shift, and blistered forearms become rare over the months.
• Operators accept night and hot-bay duty without needing to be coaxed.

This answer grows out of a question on the rubber products people guide. For the wider cost of heat, see heat and fatigue on the press floor, and for checks by role, the rubber plant safety routine. Platen and mould handling at shift start is covered in press bay safety for moulders. For logging close calls, start with our near-miss reporting form.