10
Substances on site
AI-ASSISTED
This COSHH index was generated from the materials specification in the Output 01 Intake against Built AI's substance hazard library. Manufacturer SDS for each item attached to the project record. Health surveillance and training requirements pre-flagged. Final approval rests with the competent occupational health adviser before mobilisation.
6
High-hazard items
4
Health surveillance REQ
7
Training REQ
10
SDS on file
Health surveillance — required for 4 substances
The following exposures trigger pre-employment, periodic and post-employment health surveillance under the Control of Substances Hazardous to Health Regulations 2002 (COSHH) and the Control of Lead at Work Regulations 2002 where applicable:
- Isocyanate exposure (S03 polyurethane top coat) — pre-employment lung function, periodic spirometry, immediate medical review on respiratory symptoms.
- Lead exposure from existing bridge coatings disturbed during S10 abrasive blasting — pre/periodic blood lead testing per CLAW 2002.
- Solvent exposure (S01 / S02 / S03 / S06) — periodic biological monitoring during sustained spray campaigns.
- Skin sensitisers (S01 / S03 / S04) — periodic skin checks and review on dermatitis symptoms.
- Respiratory sensitisers (S03 isocyanates) — symptom-based review at any reported respiratory complaint.
Substances on site
Two-pack zinc-rich epoxy primerZinc-rich, solvent-based, high build · spray-applied
S01DANGER
GHS4 hazards
Supplier
Hempel — Hempadur Zinc 17360
Hazard class
Flammable liquid Cat 3 · Skin sensitiser Cat 1 · STOT-RE Cat 2 · Aquatic Acute 1
Controls
Local exhaust ventilation, controlled spray booth, no smoking/hot works during application; isolate spray-painting zones from other operatives.
PPE
Air-fed RPE (BS EN 14594), Type 5/6 spray suit, butyl gloves, full-face protection, hearing protection during spray.
Storage
Cool dry store, segregated from oxidising agents; max 1,000 L on site, bunded; daily stock check.
Disposal
Empty containers retained for hauler collection; not to UFW; hazardous waste consignment notes required.
Training
REQ
Health surveillance
REQ
Two-pack high-build epoxy intermediatePolyamide-cured epoxy, MIO pigmented, build coat
S02DANGER
GHS4 hazards
Supplier
Jotun — Jotamastic 87
Hazard class
Flammable liquid Cat 3 · Skin/Eye irritant · STOT-SE Cat 3 (respiratory irritation) · Aquatic Chronic 2
Controls
Spray application within enclosure, LEV, no naked flames, area earthed during decanting; no concurrent hot works.
PPE
Air-fed RPE, Type 5/6 spray suit, nitrile/butyl gloves, eye protection.
Storage
Cool dry store, segregated; max 1,000 L on site, bunded.
Disposal
Empty containers to hazardous waste hauler; off-spec material to licensed disposal.
Training
REQ
Health surveillance
ADV
Polyurethane top coat (aliphatic)Aliphatic polyurethane finish · brush, roller or spray · isocyanate component
S03DANGER
GHS4 hazards
Supplier
International — Interthane 990
Hazard class
Flammable Cat 3 · Resp sensitiser Cat 1 (isocyanates) · Skin sensitiser Cat 1 · Aquatic Chronic 2
Controls
Mandatory air-fed RPE during spray; substitute brush/roller where specified; isolate work area; no untrained personnel to enter; isocyanate-only PPE.
PPE
Air-fed positive-pressure RPE (NOT FFP3), full Type 5/6 suit, butyl gloves, full face/head cover, post-task showering.
Storage
Sealed in original containers, segregated from primer activator; max 500 L on site.
Disposal
Empty containers to hazardous waste hauler; symptomatic ops to occupational health.
Training
REQ
Health surveillance
REQ
Polyamine activator / hardenerCuring agent for epoxy systems · highly reactive · used in stoichiometric ratio
S04DANGER
GHS3 hazards
Supplier
Various — supplied with main pack
Hazard class
Skin Corr 1B · Eye Damage 1 · Skin sensitiser Cat 1 · STOT-SE Cat 3
Controls
Decant under LEV, no skin contact, eye-wash station within 10 m, dedicated mixing bay segregated from other ops.
PPE
Chemical splash goggles + face shield, butyl gloves, chemical-resistant apron, hard hat with face shield for decanting.
Storage
Sealed containers, cool dry store, segregated from epoxy resins until use; bunded.
Disposal
Off-spec or contaminated material to hazardous waste hauler — NEVER mix discarded resin with hardener.
Training
REQ
Health surveillance
ADV
Surface preparation acid washPhosphoric acid-based etch wash · pre-coating prep on bare steel · wipe-applied
S05DANGER
GHS2 hazards
Supplier
Multiple suppliers — proprietary
Hazard class
Skin Corr 1B · Eye Damage 1
Controls
Local PPE during application, application by hand/cloth only — no spraying; eye-wash at point of use; dedicated cleaning station.
PPE
Acid-resistant gloves, chemical splash goggles, apron, long sleeves; hand wash immediately if contact.
Storage
Sealed containers, cool dry store; small quantities only on bridge deck — main bulk in laydown.
Disposal
Diluted to neutral pH before disposal as trade effluent under permit; or to hazardous waste hauler.
Training
REQ
Health surveillance
ADV
Solvent cleaner / brush wash (aromatic)Xylene-based solvent · used for spray equipment cleaning · highly flammable
S06DANGER
GHS4 hazards
Supplier
Various trade suppliers
Hazard class
Flammable Cat 2 · Asp tox Cat 1 · STOT-SE Cat 3 · Aquatic Chronic 2
Controls
Use only in dedicated cleaning bay with LEV, no naked flames within 5 m, earthed receiving container, fire extinguisher at hand.
PPE
Type 5/6 suit, butyl gloves, eye protection, FFP3 cartridge RPE for short exposures only — air-fed for prolonged use.
Storage
Flame-proof solvent cabinet, max 50 L on site, contained in bunded tray, away from oxidisers.
Disposal
Used solvent collected for licensed hauler — NEVER to drain or surface water.
Training
REQ
Health surveillance
REQ
Rust inhibitor / mill scale converterPhosphoric acid + tannins · spot treatment of light surface rust before priming
S07WARNING
GHS2 hazards
Supplier
Various trade suppliers
Hazard class
Skin Irrit Cat 2 · Eye Irrit Cat 2A
Controls
Brush application only, ventilated workings, no skin contact, eye-wash within reach.
PPE
Nitrile gloves, eye protection, long sleeves.
Storage
Sealed containers, cool dry store, normal flammable goods provisions.
Disposal
Empty containers to commercial waste; full containers to hazardous waste hauler.
Training
ADV
Health surveillance
NO
Polyurethane sealant / masticOne-part PU sealant for joint sealing post-coating
S08WARNING
GHS1 hazards
Supplier
Multiple suppliers — Sikaflex equivalent
Hazard class
Skin sensitiser Cat 1 · Eye Irrit Cat 2
Controls
Standard application — gun applied; ventilated workings; no skin contact during cure.
PPE
Nitrile gloves, eye protection.
Storage
Cool dry store, sealed cartridges; no specific bunding.
Disposal
Cured material to general waste; uncured tubes to hazardous waste.
Training
ADV
Health surveillance
NO
Concrete repair mortarPre-bagged structural repair mortar for spalling concrete repair
S09WARNING
GHS1 hazards
Supplier
Various — Sika MonoTop equivalent
Hazard class
Skin Irrit Cat 2 · Eye Irrit Cat 2A · STOT-SE Cat 3 (respiratory dust)
Controls
Mix in dedicated wetting station with LEV; FFP3 RPE during dry handling only.
PPE
FFP3 RPE during decanting/mixing, nitrile gloves, eye protection, long sleeves.
Storage
Dry store, sealed bags; pallet-stored on bridge deck during use only.
Disposal
Cured offcuts to inert/construction waste; bag waste to commercial waste stream.
Training
ADV
Health surveillance
NO
Compressed air — abrasive blasting (silica)Garnet abrasive blasting media — substitute for silica sand · used for surface preparation
S10WARNING
GHS2 hazards
Supplier
Multiple — abrasive supplier
Hazard class
STOT-SE/RE Cat 3 (respiratory dust) · physical injury hazard — HIGH VELOCITY
Controls
Sealed enclosure / containment screen; specialist blasting operative only; air-fed RPE mandatory; segregation from all other ops.
PPE
Air-fed positive-pressure helmet RPE, blast suit, gauntlets, ear defenders, steel toecap.
Storage
Sealed bulk bags; pre-blasting check of media for silica content (must be <1% per HSE WIS L153).
Disposal
Spent media swept and removed to licensed disposal — assess for surface lead contamination from existing coatings.
Training
REQ
Health surveillance
REQ
Critical reminder — isocyanate exposure
The S03 polyurethane top coat contains isocyanates — a Schedule 3 reportable disease under RIDDOR if occupational asthma develops. Air-fed RPE is mandatory during spray application; FFP3 cartridge RPE alone is NOT acceptable. No operative may apply this product without prior occupational health clearance and recorded training. Spray bay segregation must be maintained — no other operatives within the segregation envelope during application.
COSHH Index — Built AI
Author confirmation
I confirm the COSHH index reflects the materials in the approved specification. SDS for each substance are attached to the project record. Health surveillance and training requirements pre-flagged for OH and Training to action.
Author + role Signature + dateApprover — Occupational Health
Health surveillance approval
As OH adviser I confirm that pre-employment, periodic and post-employment health surveillance arrangements have been put in place for the substances triggering REQ status. No operative will be permitted on site without recorded clearance.
OH adviser + qualification Signature + date