COSHH Assessment — Chlorinated Spray & Wipe (Greyland)¶
| Ref | Revision | Issue Date | Next Review | Assessor | Approved By |
|---|---|---|---|---|---|
| COSHH_04 | 2 | 1 June 2026 | 1 June 2027 | Sean Ashton | Aaron Mason, Director |
Key references
1. Product identification¶
| Product name | Chlorinated Spray & Wipe (Greyland) |
| Supplier | Greyland Ltd |
| Active ingredients / CAS | Sodium hypochlorite (< 5%) CAS: 7681-52-9 |
| Physical form | Liquid spray |
| Appearance / odour | Clear/pale yellow liquid, chlorine odour |
| Use | Disinfection of water systems, equipment and surfaces |
2. Hazard classification¶
Overall classification: Skin Corrosive Category 1B, Aquatic Acute 1
Signal word: Danger
Hazard statements (H-codes)¶
| Code | Statement |
|---|---|
| H314 | Causes severe skin burns and eye damage. |
| H410 | Very toxic to aquatic life with long lasting effects. |
| EUH031 | Contact with acids liberates toxic gas. |
Precautionary statements (key P-codes)¶
| Code | Statement |
|---|---|
| P260 | Do not breathe dust/fume/gas/mist/vapours/spray. |
| P280 | Wear protective gloves/protective clothing/eye protection/face protection. |
| P301+330+331 | IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. |
| P303+361+353 | IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. |
| P305+351+338 | IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| P310 | Immediately call a POISON CENTRE or doctor/physician. |
| P405 | Store locked up. |
| P501 | Dispose of contents/container to an authorised waste contractor in accordance with local regulations. |
GHS pictograms¶
| Oxidising | Explosive | Flammable | Toxic | Harmful | Corrosive | Human Health | Dangerous for environment | Gas under pressure |
|---|---|---|---|---|---|---|---|---|
| ☐ | ☐ | ☐ | ☐ | ☐ | ☑ | ☐ | ☑ | ☐ |
3. Persons at risk¶
| Staff | Public | Visitors | Contractor | Workers | Young / Pregnant |
|---|---|---|---|---|---|
| ☑ | ☐ | ☑ | ☑ | ☑ | ☐ |
- Water-treatment operatives
- Maintenance staff
- Cleaning personnel
4. Routes of exposure¶
- Inhalation: Vapour causes respiratory irritation
- Skin contact: Severe burns
- Eye contact: Severe damage — risk of blindness
- Ingestion: Severe corrosive effects on digestive tract
5. Workplace exposure limits (HSE EH40/2005)¶
| Component | STD | 8-hr TWA | 15-min STEL | Notes |
|---|---|---|---|---|
| Chlorine (released) | — | 0.5 ppm | 1 ppm | EH40/2005 |
6. Frequency and duration of exposure¶
COSHH Regulation 6 requires the assessment to consider the amount, level and duration of exposure.
| Amount used | Times per day | Duration per use |
|---|---|---|
| Small — millilitres | 5–10 | 1–5 minutes |
7. Control measures — hierarchy of controls¶
Elimination / substitution: Evaluated where practicable — see Section 12.
Engineering controls:
- Use in well-ventilated areas
- Eyewash station and safety shower within 10 m
- Store in bunded area
Administrative controls:
- Never mix with acids or other chemicals
- Use minimum quantity required
- Restricted-access storage
- Labelled spray bottles only
Personal Protective Equipment (PPE):
- PVC or nitrile chemical-resistant gloves
- Chemical safety goggles
- Face shield when decanting
- Chemical-resistant apron
8. Storage and handling¶
| Temperature | 5–25 °C |
| Location | Cool, ventilated area away from sunlight |
| Avoid | Acids, ammonia, metals, organics, heat |
| Container | Original sealed container — do not decant into unlabelled bottles |
9. Emergency procedures¶
First aid¶
| Route | Action |
|---|---|
| Eyes | Rinse with water for at least 15 minutes, holding eyelids apart. Seek immediate medical attention. |
| Skin | Remove contaminated clothing. Wash with plenty of water for 15 minutes. Seek medical attention. |
| Inhalation | Move to fresh air. Seek medical attention if symptoms persist. |
| Ingestion | DO NOT induce vomiting. Rinse mouth. Give small sips of water if conscious. Seek immediate medical attention. |
Spillage¶
Evacuate area. PPE as above. Dilute with water. Absorb with inert material. Neutralise with sodium thiosulphate if available. Dispose as hazardous waste.
Fire¶
Not flammable but releases toxic fumes (Cl₂) in fire. Use water spray to cool containers.
Emergency contacts¶
- Emergency services: 999
- NHS non-emergency: 111
- AMWS supervisor: Jason May
- HSQE support: Sean Ashton (Onyx Operations)
10. Waste disposal¶
Hazardous waste. Dispose via authorised chemical-waste contractor. EWC code 20 01 29* (detergents containing hazardous substances).
11. Risk rating¶
| Before controls | With controls |
|---|---|
| High | Low |
Risk rating methodology: Severity × Likelihood = Risk (S × L = R). See POL_HSQE_21 — Risk Assessment for the full scoring matrix.
12. Training requirements¶
- COSHH briefing
- Spill and emergency procedures
- Decanting safely
- Fire awareness
13. Assessment outcome¶
| Outcome | |
|---|---|
| Safe to proceed with existing control measures | ☑ |
| Safe to proceed with additional actions | ☐ |
| Unsafe — do not proceed | ☐ |
14. Monitoring and review¶
- Weekly visual check of storage area
- Bi-monthly PPE condition check
- Annual COSHH review
15. References¶
- POL_HSQE_08 — COSHH Policy
- POL_HSQE_19 — Personal Protective Equipment (PPE) Policy
- SOP 8.5 — Hazardous Substances (COSHH)
- APP_09 — COSHH Assessments Log
- HSE COSHH Regulations 2002 (SI 2002/2677, as amended)
- HSE EH40/2005 Workplace Exposure Limits
- CLP Regulation (EC) No 1272/2008 (as retained in UK law)
16. Signatures¶
| Name | Signature | Date | |
|---|---|---|---|
| Assessor | Sean Ashton, HSQE Consultant | 09/09/2026 | |
| Supervisor | Jason May, Site Supervisor | ||
| Approved by | Aaron Mason, Director | ||
| User acknowledgement |
Reformatted 09/09/2026 to the 16-section COSHH template. Hazard classification, exposure limits, control measures and risk rating are unchanged from Issue 2 — the migration added the persons-at-risk grid, frequency and duration of exposure (COSHH Regulation 6), the GHS pictogram grid, the assessment outcome and the signature block.
This assessment must be reviewed annually or when circumstances change — whichever is sooner.
Method statements¶
Used for the disinfection of water systems, equipment and surfaces, which is the activity these method statements cover.
| Ref | Method statement |
|---|---|
| MS 3.6 | Disinfection of Mains |
| MS 3.6.1 | Super Chlorination of Water Mains |
| MS 3.11.2 | Commissioning of Mains and Services |
Held at Issue 2, 01/06/2026 on the Van Packs site and listed in APP_24. The method statement sets out the safe system of work for the task; this assessment controls the substance used within it.
Related documents¶
This assessment is one of thirty held under APP_09. The substance-specific controls are above; the system that maintains them is below.
- POL_HSQE_08 Control of Substances Hazardous to Health (COSHH)
- POL_HSQE_19 Personal Protective Equipment (PPE)
- SOP 8.5 Hazardous Substances (COSHH)
- SOP 8.4 Personal Protective Equipment
- SOP 8.7 Health Surveillance
- SOP 9.5 Hazardous Management of Waste
- APP_09 COSHH Assessments Register
- APP_10 Legal & Compliance Requirements Register with Evaluation
- RA_HO_15 PPE Management
Standard applied: COSHH Regulations 2002 (undated reference), with workplace exposure limits taken from HSE EH40/2005 and hazard classification from GB CLP. Referenced undated so a new edition does not force a re-issue of every assessment.