Montag, 22. Februar 2016

Chlorine dioxide-Dossier Guidance on safe use


http://www.qsartoolbox.org/de/web/guest/registration-dossier/-/registered-dossier/15450/9

Chlorine dioxide-Dossier

Guidance on safe use


Administrative data

First-aid measures

There are adequate first aid/medical facilities, trained personnel and equipment, including first aid response capabilities. The emergency eyewash and shower are inspected regularly. The provisions and procedures are under the Company’s management system and also under authority surveillance.

The precautions in case of accident are:
- Inhalation of gases: Ensure access to fresh air if chlorine dioxide has been inhaled.
Provide the injured party with oxygen in the event of severe breathing difficulties and seek immediate hospital treatment.

- Skin contact: Wash off immediately with soap and plenty of water. Seek medical advice if irritation develops. Remove and wash contaminated clothing before re-use.

- Eye contact: Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Seek medical attention.
Ingestion: Rinse out the mouth and immediately drink a few glasses of water, but only if the person is fully conscious. Do not induce vomiting! Seek medical attention.

Fire-fighting measures

There are provisions and procedures in place for fire emergency situations under the Company’s management system. There are appropriate fire fighting equipment including manual extinguishing equipment under management and authority surveillance and inspections (water, foam, dry chemicals or carbon dioxide). There are emergency evacuation procedures; training and fire drills are undertaken regularly. The full procedures and responsible persons are described in the emergency preparedness plan. The fire extinguishers are inspected regularly. There is cooperation and surveillance of the plant operations by the local fireworks / corresponding authorities.

The material is not combustible.
- Extinguishing media: Water is recommended since chlorine dioxide is soluble in water and the toxic effects are reduced on dilution.
Unsuitable extinguishing media: None known.

- Special protective equipment: In the event of fire, wear self-contained breathing apparatus. When risk of direct contact, use chemical resistant protective clothing.

- Special exposure hazardous: Chlorine dioxide gas has highly toxic characteristics. Use a gas mask as a preventive measure if there is any risk of chlorine dioxide in the air.

Accidental release measures

There are provisions and procedures in place for emergency situations that base on a risk assessment conducted to assess all known and potential hazards and under the Company’s management system.

During accidental situations procedures are in place to contain the intermediate within the process buildings / site. In case of accidental spillage, larger amounts should be absorbed and properly disposed of; smaller spills may be diluted with water.

There are procedures in place also to inform authorities of special situations such as temporary process shut downs.

- Environmental precautions: Small amounts can be contained with sand, clay or earth and rinsed with plenty of water. If a large amount has been released, start pumping wastewater into the guard basin and contact expert assistance. Do not return product to container or tank due to risk of decomposition.

- Methods for cleaning up: Rinse thoroughly with plenty of water before disposal. Do not allow material to contaminate ground water system.

- Personal precautions: See section Exposure Control / Personal Protection.
Sources of ignition must be kept away.

Handling and storage

The processes are closed. The Chlorine Dioxide solution is manufactured and consumed during its whole life cycle under strictly controlled conditions.
For loading and unloading, maintenance and emergency situations where limited exposure could potentially exist there are specific guidance and procedures, c.f. Exposure controls / personal protection, Material Safety Data Sheets available for staff etc.

The staff is trained to a level pertinent to their post in all relevant operations of the plant and equipment at the site under the Company’s management system.

There are specific provisions and procedures in place for certain works: Working with certain chemicals, Fireworks, Working in ATEX premises, maintenance of pressurized equipment, works inside tanks, tunnels and pits, working in high places etc.

Avoid inhalation and skin contact. Ensure necessary ventilation in work areas in which chlorine dioxide solution is being used. Use local exhaust ventilation at point of vapour emissions. Ensure that gas masks/gas filters are available. Ensure that emergency shower facilities are available. Avoid contact with the chemicals and materials indicated in § on Stability and reactivity below (Materials to avoid).

There are safety signs and labelling in chemical tanks and certain areas.

The handling and storage of chemicals is under surveillance of the environmental and chemical authorities.

Chlorine dioxide solution should be stored at the lowest possible temperature in ventilated tanks equipped with an exposition hatch. High temperatures will have a negative effect on the quality and the function of the product. Increased temperatures may cause gas vaporisation and may lead to decomposition. Chlorine dioxide solution should be stored separate from organic material and reducing agents.

Transport information

Land transport (ADR/RID)

Shippingopen allclose all
Remarks:
Not listed, but transport by road or rail not recommended.

Inland waterway transport (ADN(R))

Shippingopen allclose all
Remarks
Not listed, but transport by inland water not recommended.

Marine transport (IMDG)

Remarks
Not listed, but transport by sea not recommended.

Air transport ICAO/IATA

UN number:
Not applicable.
Remarks
Forbidden to transport by air.

Additional transport information

Additional transport information
Not applicable during normal operation of the Company.

Exposure controls / personal protection

The processes are closed. The Chlorine Dioxide solution is manufactured and consumed during its whole life cycle under strictly controlled conditions. Thus there is no significant human or environmental exposure during normal and maintenance related operations.

Exposure control elements in place include:
- Continuous monitoring of operations and processes, employees health as well as environment automatically and by chemical and physical analysis and site inspections and walk through in operational premises
- Emergency preparedness procedures, e.g. emergency preparedness plan under the Company’s management system
- Employee training procedures under the Company’s management system
- Employee health checks and other health care services
- Surveillance of the Company’s operations by environmental and chemical authorities
- Security and control, e.g. of access into the site
Risk management measures implemented to minimise any exposure include:
- Additionally good ventilation of working spaces is provided.
- In case of handling substance Personal Protective Equipment (PPE) needs to be used such as:
i) chemical resistant protective gloves (butyl rubber, neoprene or PVC)
ii) chemical resistant protective clothing (polyester or acrylic),
iii) eye/face protection (safety goggles or safety visor)
iv) appropriate respiratory protection (respiration filter at concentrations of up to 1 ppm and gas mask at concentrations above this).

- Existence of emergency showers and eye wash station
- Measurement for ClO2 is performed before work is conducted at the working places and equipments (tanks, etc.).
During loading / unloading for transport and sampling controlled limited respiratory exposure may occur which however considering the nature of the substance can be regarded as limited.

Occupational exposure limits Chlorine dioxide (gas): (VLE_MP) 0.1 ppm (8 hr), (VLE-CD) 0.3 ppm (15 min).

Stability and reactivity

Hazardous decomposition: None under normal use.

Conditions to avoid:
- High temperatures. Gaseous chlorine dioxide is emitted on heating. High temperatures will have a negative effect on the quality and the function of the product and may lead to off-gasing and risk of explosion.
- UV light sources. UV causes decomposition.

Materials to avoid:
- Iron, copper and their alloys.
- Reducing agents.
- Organic substances

Hazardous reactions: None under normal conditions. At higher concentrations, chlorine dioxide is an oxidising agent, which is stable as long as the solution is stored in cold and dark conditions. 

Disposal considerations

Under normal operation there is no amount of the substance that would need to be disposed of.

In case of accidents or disturbance situation spills or leaks of substance can be:
- The company has spills monitoring and recovery systems that collect main spills to the process,
- Collected with an inert absorbent and disposed to a landfill according to the local hazardous waste treatment regulations,
- Flushed into canals / safety basins and recycled or discharged to the wastewater treatment plant, where the substance dilutes and/or degrades. The flow is controlled in such a way that the treatment process is not disturbed.
- Packaging should be rinsed with water prior to disposal. If recycling is not practicable, is disposed of in compliance with local regulations.



1 Kommentar:

  1. Hi Chlorine Dioxide ,Very informative and important post regarding breathing apparatus. Also quite a lot of good details about the uses of the equipment. Breathing apparatus sign which indicates mandatory use of it can be life saving. We deal in are safety signs and post like these really help us in improving our knowledge in this field. Thanks for the post.

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