Environmental guidance for your business in Northern Ireland & Scotland

Nickel coatings

Applying nickel coatings

Before you apply single-coat white enamel ('direct-on white enamelling'), you must prepare the surface with a nickel coating (nickel flash) to ensure a good enamel bond. You can normally achieve this by dipping the item to be enamelled into a hot solution of acidified nickel sulphate. Metallic nickel is often deposited by ion replacement but alternative processes are available.

After rinsing, the surface is passivated (made unreactive) in a hot alkaline solution. This neutralises the acid residues and prevents rusting.

What you must do

In the nickel sulphate baths, significant quantities of iron hydroxide are formed. It is filtered out of the bath on a continuous basis.

You must not make any discharge to surface water or groundwater without consulting your environmental regulator. If you discharge without an authorisation, permit or consent from your environmental regulator you could be prosecuted and fined or imprisoned.

Preventing water pollution

You must not discharge trade effluent to a public sewer without trade effluent consent or a trade effluent agreement with your water and sewerage company or authority. If you discharge without a consent or agreement you could be prosecuted and fined or imprisoned.

Trade effluent - managing liquid wastes

You must comply with your duty of care responsibilities when dealing with waste.

Duty of care - your waste responsibilities

Spent nickel sulphate solutions are acidic and you may need to deal with them as hazardous/special waste.

Hazardous / special waste

Good practice

  • Reduce your waste management charges by de-watering sludges.
  • Install splash guards and drip trays around baths to contain leaks and spills.
  • If there is a spill, mop it up rather than rinsing it down. This will reduce the volume of wastewater you produce.
  • Allow sufficient drain times to reduce drag-out.

Whats new on NetRegs

  • Waste – Duty of Care Roles and Responsibilities

    The Northern Ireland Environment Agency has published a short guide to the duty of care responsibilities including advice and information for waste producers, carriers and those accepting, storing and treating waste.

    https://www.daera-ni.gov.uk/publications/waste-duty-care-responsibilities

  • NetRegs:- FREE, ANONYMOUS, PLAIN ENGLISH GUIDANCE FOR BUSINESSES

  • EIA (Agriculture) Regulations for Northern Ireland

    Any person intending to alter the use or management of areas of uncultivated or semi-natural land must obtain prior approval from the Department of Agriculture, Environment and Rural Affairs (DAERA).

    Read more on the DAERA website

  • Guidance from your environmental regulator

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  • 9 NEW GPPs (Guidance for Pollution Prevention) available now

    The NetRegs team at SEPA, in partnership with The Northern Ireland Environment Agency, Natural Resources Wales and a number of industry bodies have produced 9 new GPPs to replace out of date PPGs. More are coming! Check the available topics

  • New guidance

    New guidance for Start-ups, charities and community projects

    http://www.netregs.org.uk/environmental-topics/environmental-management/first-steps-guidance-for-new-starts-projects-and-charities/

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Permits

NIEA - Apply online

SEPA - Application forms