A practical safety routine for chemical and specialty chemical makers: who checks what, and when

A solvent blending unit goes eight months without an incident. Then an operator fills a drum of toluene with the bonding clamp lying on the floor beside it. Nobody sees. The drum fills without a spark, and the habit spreads to the next shift. The plant has a safety manual, a poster at the gate and a monthly committee meeting. What it lacks is a routine that puts the right eyes on the drum point at the right time.

Below is a working routine for plants in our reactor, blending and filling group. Each check has an owner, a time and a fate for its findings. It records floor habit, not law.

Long smooth runs teach people that shortcuts are safe. A face shield stays on the hook during a quick sample. The second person check on a valve line-up becomes a shout across the bay. Supervisors stop correcting because nothing has gone wrong. Routines fade the same way. If a check belongs to everyone, each person trusts that a colleague already did it.

START OF SHIFT, field operator: eyewash and drench shower flushed. Bonding clamps at drum and IBC points bite cleanly. Spill kit sealed and stocked.
START OF SHIFT, panel operator: alarm list read, interlocks bypassed noted with reason, scrubber circulation and caustic level checked on screen.
EVERY TRANSFER, operator and second checker: line-up read back aloud, receiver level confirmed, nitrogen blanket on solvent tanks verified.
DAILY, shift in-charge: one walk of the whole unit, open permits checked against the work on the ground, one task observed and discussed.
DAILY, loading lead: tanker earthing, wheel chocks, driver briefing, hose condition, sign-off before release.
WEEKLY, safety officer: breathing apparatus cylinders, extinguisher seals, bund drain valves shut, flame arrestors and breather valves on the inspection list.
WEEKLY, plant head: read the week's near misses and open findings, close or reassign each one.
MONTHLY, plant head with safety officer: one drill, one permit audit, one review of protective equipment issue and fit.
Every finding: on the card, with an owner and a closing date, rechecked by whoever is next on the rota.

1. 1

   Field operators own their workstation at the start of shift

   A two-minute check of the things they will rely on if something goes wrong: water at the eyewash, a clamp that bites, a stocked spill kit. They initial a card at the station.

2. 2

   Panel operators own the screen

   They read the alarm list and note any interlock that is bypassed, with the reason and who approved it. A bypass with no reason gets raised before the first batch step.

3. 3

   Every transfer has two people

   One lines up, the other reads the line-up back from the batch card. On solvent tanks, the blanket pressure is confirmed before pumping starts.

4. 4

   The shift in-charge walks the plant once a shift

   He checks open permits against the work: is the blind still in, is the hot work area clear of solvent drums? He watches one task from start to finish and talks about it with the operator.

5. 5

   The safety officer covers equipment weekly

   Breathing sets, extinguishers, bund valves and the list of flame arrestors and breather valves due for inspection. Defects go to maintenance with a date.

6. 6

   The plant head closes the loop

   Each week he reviews near misses and the open list. Each gets closed, reassigned or escalated. Nothing sits open without a name beside it.

• Reactor bay. A cracked sight glass, a manhole gasket weeping, the agitator coupling guard left off after maintenance, a rupture disc tag past its date.
• Tank farm. Nitrogen regulator set wrong, a conservation vent stuck, rainwater standing in the dyke with the drain valve open.
• Drum store. Drums stacked too high, flammables beside oxidisers, a forklift charging point too close to the solvent bay.
• Tanker gantry. Loading arm swivels leaking, the deadman switch taped down, the earthing relay ignored when it beeps.
• Laboratory. Fume cupboard sash jammed open, unlabelled reagent bottles, a gas cylinder without its chain.
• Effluent pit. Lids left off, no gas test before someone climbs down to clear a choke.

Checks on equipment are the easy half. The harder half is watching how people actually do risky tasks. Pick one task a shift: a solvent drum filling, a filter press opening, a tanker hook-up, a reactor sample under nitrogen. The in-charge watches it through, without stepping in unless there is danger. Afterwards he names one thing done right and one to change. It takes a minute or two. Over a month every common task gets watched on every crew. Where flammable vapour raises the stakes, read floor safety at solvent plants. For sticky, fumy mixing and filling, see glue and sealant plant safety.

A check that finds a fault and changes nothing teaches people to stop looking. Give every finding an owner and a closing date. Hold one open list per plant, and have the plant head go through it each Monday. Report back to whoever raised the item. If the same item keeps returning, such as clamps left off at the drum point, treat it as a habit to coach rather than a part to replace. How GullyHR helps set up routines like this is described under workplace safety and wellbeing. The behaviour side gets a deeper look in our post on complacency during quiet runs.

• Walk the plant with one question: who checked this today? Write down every item with no answer.
• Write a start-of-shift card for each workstation, no longer than six lines.
• Ask each in-charge to watch one task a shift and say one thing about it.
• Open a single findings list and read it every Monday with the safety officer.