Free technical library

Instructions for labor protection when working in premises with the possible presence of hazardous gases. Full document

Occupational Safety and Health / Standard instructions for labor protection

 Comments on the article

Safe Operation

1. General provisions

1.1. This instruction has been developed on the basis of DNAOP 5.2.30-5.07-97 "Standard instructions for labor protection when working in premises with the possible presence of hazardous gases."

1.2. This instruction establishes safety requirements when carrying out work in premises with possible gas contamination with gases such as: methane, propane, butane, hydrogen, freon-22, carbon dioxide, hydrogen sulfide.

1.3. This instruction is issued upon signature to everyone who performs work in premises with the possible presence of hazardous gases. The employee must always have instructions with him when working in areas with the possible presence of hazardous gases.

1.4. Potentially dangerous premises from the point of view of gas contamination with the above gases are: cable entry rooms, cable wells, collectors, tunnels.

1.5. Contamination of a room with hazardous gases poses two main dangers to humans: explosion hazard and harmful effects on health and life (suffocation, drug intoxication, etc.)

1.2. The main hazards in gas-polluted premises.

1.2.1. Explosive hazards are determined by hydrocarbon gases: methane, propane, butane, hydrogen, hydrogen sulfide.

1.2.2. The main physical properties of hydrocarbons:

1.2.3. Gases that pose a health hazard are: methane, propane, butane, hydrogen, carbon dioxide, hydrogen sulfide, freon-22. Particularly dangerous are those that have a density greater than air (propane, butane, carbon dioxide, hydrogen sulfide, freon-22) and therefore collect in the lower layers of indoor air.

1.2.4. Small concentrations of all the above gases cause oxygen starvation, suffocation, and drug intoxication in humans. If there is a lot of gas pollution, a person can die.

1.2.5. An additional negative effect of freon-22 is due to the fact that, regardless of its concentration at temperatures above 400°C, it decomposes to form highly toxic substances.

1.2.6. The appearance of explosive gases such as methane, propane, butane in premises is associated with the following factors: natural, leakage from leaky gas pipelines, the use of artificial gases (propane, butane) for heating and other industrial needs.

The appearance in premises of such explosive gases as hydrogen, carbon dioxide, freon-22 is associated with their use by the personnel themselves when performing special work: measuring, technological, etc.

The appearance of hydrogen sulfide in the premises is associated with the process of decay.

1.3. Mandatory requirements for personnel who work in premises with the possible presence of hazardous gases.

1.3.1. Workers are allowed to work in premises with the possible presence of hazardous gases who are at least 18 years old, who have been trained in safe working methods, tested their knowledge of safety rules with a positive result and with a record in the certificate of knowledge testing and permission to work with gas in cylinders, leak detectors, indicators gases

1.3.2. Persons working in premises with possible contamination with hazardous gases must know how to provide first aid to victims of the negative effects of hazardous gases and follow the instructions on safe work practices set out in the following documents:

• Safety rules when working on cable communication lines and wire broadcasting, 1996;
• Safety rules for work at telephone and telegraph stations, 1996;
• Rules for the design and safe operation of pressure vessels, 1994;
• Instructions for labor protection when working in premises with the possible presence of hazardous gases.

Determining the presence of hazardous gases

1.4.1. The presence and concentration of explosive gases is determined by the following gas indicators:

• IVP (portable explosive indicator) - for methane, propane, butane;
• PGF2M (portable Fainberg gas analyzer) - for methane, propane, butane;
• SVK-3M1 (explosive concentration alarm) - for methane, propane, butane, hydrogen;

1.4.2. The presence and concentration of carbon dioxide is determined by the SHI-10 mine interferometer.

1.4.3. The presence and concentration of freon-22 is determined by the following leak detectors:

• GTI-6 (halogen leak detector);
• BGTI-7 (battery halogen leak detector);

1.4.4. The presence of gases used in the gas industry can be determined by the characteristic odor of ethyl mercaptan, which is used as an odorant.

1.4.5. Air sampling for the presence of methane and hydrogen is carried out from the upper layers of indoor air, and for the presence of carbon dioxide, butane, propane, freon-22, hydrogen sulfide - from the lower layers. Indication of the presence of carbon dioxide and freon-22 is carried out only after establishing the absence of explosive gases.

2. Labor protection requirements before starting work

2.1. In the absence of means of continuous monitoring of gas contamination in premises with the possible presence of hazardous gases, the presence and concentration of these gases is monitored at least once a day for premises in which work is carried out regularly, and before starting work for premises in which work is carried out periodically.

2.2. Control must be carried out by persons specially appointed for this purpose by order of the enterprise, using the devices listed in section 1.4.

2.3. The control results are recorded in the journal.

2.4. If explosive gases (methane, propane, butane, hydrogen) are detected in the premises, persons carrying out the work must immediately call the emergency gas service and bring this fact to the attention of the head of the enterprise and the person responsible for fire safety.

2.5. Work in the room can begin after the gas leak has been eliminated and the room has been ventilated. The permissible level of gas concentration should not exceed 1%.

2.6. Before starting specific work, performers are given targeted instruction by the head of the structural unit.

3. Labor protection requirements during work

3.1. The general condition for the safe conduct of work is its proper organization with the appointment of those responsible for each work, responsible for the condition of control devices and the use of personal protective equipment.

3.2. When carrying out damage localization work using tracer gases, the following rules must be observed:

3.2.1. The concentration of the hydrogen mixture in the cylinder should not exceed 4%.

3.2.2. When working with freon-22:

• use safety glasses and cotton gloves;
• if it is necessary to carry out work with open fire, use a gas mask, and when working in cable wells, ensure intensive ventilation.

3.3. When carrying out measurement and technological work using carbon dioxide, intensive ventilation must be provided.

3.4. When working in rooms with the possible presence of hazardous gases, it is prohibited:

• start work before checking the gas contamination of the premises with dangerous gases;
• carry out work to indicate freon-22 and carbon dioxide until it is established that there are no explosive gases in the room (methane, propane, butane, hydrogen);
• smoke, turn on heating devices, use open fire when working with freon-22;
• use gas cylinders that have not been inspected and do not have a stamp indicating the last inspection, as well as those for which the deadline for the next inspection has already passed.

4. Labor protection requirements at the end of work

4.1. Check the functioning of the ventilation system.

4.2. When using cylinders with gases (air, hydrogen mixture, carbon dioxide, freon), check that the valves are closed securely and ensure that the cylinders are transferred to permanent storage areas.

5. Labor protection requirements in emergency situations

5.1. When working in rooms with the possible presence of hazardous gases, the following emergency situations are possible:

• the appearance of gas contamination with dangerous gases;
• frostbite from carbon dioxide or freon-22 of personnel carrying out technological work.

5.2. Each worker who is the first to detect the threat of an emergency situation must immediately stop work and give the command “Stop!”

5.3. The “Stop!” command given by any employee must be immediately followed by all employees who heard it.

5.4. The employee must immediately report the threat or occurrence of an emergency to the immediate supervisor of the work.

5.5. When gas contamination with explosive gases occurs, it is necessary:

• take all measures to prevent the possibility of an explosion, turn off electrical appliances that are not explosion-proof;
• start searching for the source of gas leakage;
• organize ventilation of the gas-polluted room by all possible means;
• call the emergency gas service.

5.6. In case of frostbite caused by carbon dioxide or freon-22, a worker carrying out work must:

• Gently rub the frostbitten area of ​​skin with a cotton swab or napkin until the skin becomes red;
• wipe the skin with alcohol;
• make a bandage with a sterile bandage.

5.7. In all cases, call a doctor to the victim, and before his arrival, provide first aid to the victim.

5.8. If there is a threat of other emergency situations not directly related to work in premises with the possible presence of hazardous gases, act in accordance with your responsibilities in accordance with the emergency response plan.

 We recommend interesting articles Section Standard instructions for labor protection:

▪ Manure removal system maintenance. Standard instruction on labor protection

▪ Loading wood with Fiskars loaders. Standard instruction on labor protection

▪ Defectoscopist for magnetic and ultrasonic testing. Standard instruction on labor protection

See other articles Section Standard instructions for labor protection.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive New Bluetooth devices from PHILIPS SEMICONDUCTOR 15.03.2003 PHILIPS SEMICONDUCTOR announced two new products in its Bluetooth family, the BGB102 radio system and the PCF87852 data ROM, which together form a complete solution for Bluetooth systems. The BGB102 radio system includes all the necessary RF circuitry: transmitter, receiver, antenna switch, etc. All of this is housed in an ultra-small 6x6mm package. The data ROM (flash option is also available) has everything you need for mobile operations and comes in an ultra-small 80x7mm LFBGA-7 package.

Other interesting news:

▪ Razer Seiren Pro Digital Streaming Microphone

▪ Parking will be easier

▪ Spycam Pen Camera

▪ Metalens - artificial eye

▪ 96-layer QLC NAND flash prototype created

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Riddles for adults and children. Article selection

▪ article Natural and technogenic emergencies, their possible consequences. Basics of safe life

▪ article What are the turns of a sailing ship? Detailed answer

▪ article Beep computer self-diagnosis at startup. Directory

▪ article IP-telephony. Encyclopedia of radio electronics and electrical engineering

▪ article Calculation formulas when working with wire. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages ​​of this page

Arabic	Hebrew	Polish
Bengali	Hindi	Portuguese
Chinese	Italian	Spanish
English	Japanese	Turkish
French	Korean	Ukrainian
German	Malay	Vietnamese

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua
2000-2024