Saturday, 28 August 2021

SOP – Safe Operating Procedure for Controlled Blasting


      (All accidents are preventable)

Precautions to be followed by employees and workers during blasting work

S.No

Precautions

Photographs

1

 

Before start the job, conducted the safety tool box talk meeting and get blasting permit.

Prior permission must be obtained from the District collector or District Magistrate.



2

 


Before start the job, ensure all workmen should wear all Personal Protective Equipment’s i.e Safety Helmet, Reflection Jacket, Safety Shoe, Ear Muff,  Hand Gloves and Goggles.


3

 


Check the explosives license and allow only the explosive license holder to check the connection of explosives and detonate explosives.



4



Before light-up for blasting, barriers should be placed around the work area.


5

Smoking and alcohol consumption must be avoided completely. Flammable materials should not be allowed inside.



6

 


No person entering the blast area should be allowed to carry items such as phones, pagers, appliances, cigarettes etc.



7

Vehicles should be used only after inspection of Plant & Machinery Officer and Safety Officer.


8


The depth of the two holes should not be more than the depth of the empty place of the side.



9

During drilling wooden / MS plate dummy to be used to all drilled holes for avoid misfire and unwanted soil refilling. Gelatin cartridge to be filled in to the hole, after completion of drilling work only.

10

Only the same type of explosives should be used. (Gelatin sticks, electric detonators).

11

During work, Gelatin cartridge filling and explosion to be ensured all extra explosive materials are kept in safe place or explosive Vehicle.

 

 

12

 

Do not allow explosive work during thunder and lightning.

13

Always test four or five EDs (Electric Detonators) with a series connection test device and select the correct ED to explode. As per the site condition, explosive license holder and site engineer will decide to how many holes will be exploded.

14


After attaching the electric detonators to the gelatin sticks, cover with soft sand.


15

After cover with soft stand, then cover with 150mm rubber mat and keep required number of sand bags on rubber mat.

16

After checking all the connections, the public should be made aware through the loudspeaker before exploding. Flagmen to be placed on all passage to observe public people and give all clear for explode. Red flag and whistle to be provided to flagmen.

17

After fixing all types of connections should be detonated at a distance of 70m-100m from the blast site. During explode all site workmen stayed in safe place and blaster also do blasting activity under the safe shelter.

 

18

Follow below instructions after finish the firing;

1. Only the person holding the explosives license should be allowed to inspect the explosive site.

2. If found any miss fire, cover all the way with barrier boards.

 

19

3. Misfire gelatin cartridge to be removed by using of Compressor Air Blower.

4. If not able remove by Air Blower, Soak in soap solution for three days and remove unexploded ordnance. Hard Barricading  to be done around the misfire location.

20

Wash your hands thoroughly after blasting work and before eating.

 

21

Upon completion of the blasting work, the blasting work permit should be returned to the concerned officer and give all clear siren.

 

 

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Friday, 27 August 2021

SOP – Safe Operating Procedure for work at height


                                                                                         (All Accidents are preventable) 

 Precautions to be followed by Employees and workers

S.N

Precautions

Photographs

I

Before start the work at height:

1

Explain to all workers about hazards and safety precautionary measures when working at height.

2

If work carried out above height of 1.8 meters (6 feet), a work permit must be obtained or renewed.

3

Before start the work, make sure that all workers are wearing personal protective equipment (PPEs), safety helmet, safety belt, reflection jacket and safety shoe.



4

Make sure that all the workers who are going to work at height are in good health. Everyone must have passed the Height Pass Test. People with acrophobia should not be allowed to work at height.

5

A hard barricade should be set up at least two meters away from the work area. Barricading tape also should be attached on hard barricading.

6

Make sure there are good ladders or stairs to reach the work place at height and platform in good condition to start the work.

 

7

Height work should be supervised by a qualified and experienced supervisor.

 

II

During work at height:

8

Safety belt should be used properly when ascending and descending on ladders at height or use Rope grape vertical fall arrestor. Safety helmet must be used with chin strap.



9

During working at height, always ensure the safety belt must anchoring with lifeline or to anchoring with strong and fixed horizontal member of the platform. The lifeline at least 12 mm wire rope or 18 mm polyamide rope. The safety Belt must confirm IS 3521.

10

Working platform should be without any gab and guarded completely. Don’t keep loose materials and scraps on working platform.



11

Safety net shall be tied as close as possible to the working platform but not allowing more than 3 meters below the platform. The safety net shall extend out at least 2.5 meters from the side of the open edge. It’s shall be combination of fall protection of man and material from height. The safety net must confirm IS 11057.



12

Modern fall arresting device may be used depending on the required of situation, i.e., Chimney painting, overhead tank painting, wall painting, working on the transmission towers, etc.Modern fall arresting devices are self-retractable fall arrester, K-pod, vertical rope grape fall arrester and fall protection grip descender.

13

Avoid smoking and alcohol while working at heights.


14

Shall we use tool holders, wrist tool holder, tool pocket etc. to avoid the hand tools falling from height. Do not drop any materials directly from the top, use rope to lower the materials down.




III

Other Height Safety Precautions:

15

Work at height on scaffolding:

Before start the work on scaffolding should be ensured following;

1.Erected on frame and stable structure.

2.Good baseplate and cross bracings are provided.

3.Ensure that good and secured ladder provided to reach the working platform.

4. Working platform should be without any gab and guarded completely.

5.Use of safety belt and safety net to be ensured.



16

Work on fragile roof:

Before start the work on fragile roof should be ensured following;

1.Use suitable and sufficient access ladders, cat ladders, crawling boards etc. and fix them properly on the roof.

2. Use safety belts and anchor them properly with the anchorage points on the roof or to the lifeline or fall protection device. Safety net also to provide under and side of the roof.

3. Never step directly on any part of the roof. Always walk or step only on the ladders.

17

Work at height through Man basket / Suspended platform:

Before start the work at height through Man basket following should be ensured;

1.The basket must be tested more than 1.5 times of SWL.

2.Ensured that complete basket is good condition to use i.e platform, guard rails, mesh guard and slings.

3. Attach the safety belt with crane hook, don’t attach with any railings of the basket.

4.If may wall painting and cleaning, separate lifeline or fall arrestor to be provided to safety belt.

5.The man basket must be confirmed EN 14502-1, test Certificate to be obtained to man basket and other all supporting lifting tools and tackles of man basket.


18

Minimum distance required between structure / scaffolding and overhead electrical lines shall be maintained as given below;

For low and medium voltage lines Up to 11 KV- 5.8 meters.

For high voltage lines above 11 KV – 6.1 meters.


19

Be very careful when lifting long objects such as ladder, pipes and iron rods near power lines.

20

If any machine is operated electrically at height, the supply must be taken through 30 mA RCCB / ELCB only. Machine and other electrical equipment's shall be earthed properly.

 

21

When working at height make sure there are no sharp rods and no sharp objects on the ground. Also make sure that no harmful chemicals and flammable substances are stored underneath.



22

Upon completion of the work, the Height Work Permit should be returned to the concerned officer.

 

  

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