Bhadwasi Gypsum Mine, Rajasthan State Mines & Minerals Limited CHAPTER VII Additional studies

Transcription

1 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited CHAPTER VII Additional studies Risk assessment and safety management Plan: Risk assessment has been done covering following aspects: possible danger due to failure of mine benches, terraces of external dumps, accident due to blasting & use of explosives, operation of mining machineries, transportation trucks etc Hazard identification and risk assessment: To identify risks which need maximum attention and the options for achieving risk reduction. To identify which risks need careful ongoing management, the nature of ongoing management as well as the indicators that show that the risk is being managed. To identify triggers which might be used to monitor that hazard and initiate remedial action if elimination is not feasible Identification of hazards: This should be done by using: i- Past experience of accident and occurrences at the mines ii- process evaluation. iii- Consultation with employees iv- Safety statistic for this and other mines in surrounding mines Risk ranking: - The process of risk ranking is carried out by considering both the likelihood of the occurrence of each hazard and the potential consequence should the hazard occur. Each shall be estimated by engineering principle to enable the risk ranking to be carried out. The risks are ranked according to the level of risk i.e. the highest risk to the lowest risk. The risk of any hazard is dependent upon the change that will be occur (likelihood) and the impact of an occurrence (consequence). The risk score = likelihood x consequence Consequence is the size of the loss or damage. In terms of health and safety, it is the degree of harm that could be caused to people exposed to the hazard, the potential severity of injuries or ill health and or the number of people who could be potentially affected. It should be remembered that consequence of a hazard need not only be in terms of safety criteria but could also be in terms of a money loss, incurred costs, loss of production, environmental impacts as well as public outrage. Likelihood is the change that the hazard might occur In some cases personnel are only exposed to the hazard for part of the time. A more detailed analysis can be carried out of the risk ranking by taking this into consideration. Replacing likelihood by exposure (% time personnel are present) and probability (chance that they will be harmed) Risk score = probability x exposure x consequence The values used for likelihood, consequence, exposure or probability need to be agreed by the risk assessment team. Risk ranking can be determined by qualitative and quantitative means. 125

2 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited Risk ranking process: Scale for consequence: Several dead 5 One dead 1 Significant chance for fatality 0.3 One permanent disability/ 0.1 Less change of fatality Many lost time injuries 0.01 One lost time injury Small injury Scale for exposure: Continuous 10 Frequent ( daily) 5 Seldom (weekly) 3 Unusual (monthly) 2.5 Occasional (yearly) 2 Once in five years 1.5 Once in ten years 0.5 Once in 100 years 0.02 Scale for probability: May well be expected 10 Quite possible 7 Unusual but possible 3 Only remotely possible 2 Conceivable but unlikely 1 Practically impossible 0.5 Virtually impossible 0.1 Based on the above guidelines hazard identification and risk assessment have been done alongwith interse priorities as step -1. On the above guidelines the mechanism contributing principle hazards and ranking have been done as step- 2. The control measures and procedure for respective mechanism contributing hazards have been tabulated as step- 3. STEP 1,Table No: Initial Hazard Identification, Risk, Assessment And Prioritisation S. NO Description of hazard Consequence Probability Exposu re Total risk 1 Fires Use of explosive

3 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited 3 Machinery Open cast workings Dumps Shortage of skilled persons / deployment of unskilled 7 Poor supervision Lack of awareness Employment of contractors workers STEP 2,Table No : Identifying Mechanisms Contributing Principal Hazards And Ranking S.NO Major Hazard Mechanism Cons. Prob. Expo. Risk 1. Fire Explosives magazine Use of explosive Not taking proper shelter not withdrawn from danger zone Searching of sockets / misfired shot Proper handling of explosives MACHINER Maintenance schedules not followed By passing protective devices Unskilled operators Moving parts of the machineries Movement of machineries at mining faces Movement of trucks & dumpers in hilly areas Failure of brakes Over Speeding Reversals Open cast Failure of benches / ing on steep slopes workings ing on high benches Fall of stones and sides Scattered loose boulders on working faces ing of manpower & machineries near each other. Breaking of boulders by manual labourers Steeps gradient of the roads, curves and bends Drilling on high benches

4 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited Loading of trucks by manual labourers Dumps Failure of slopes by flowing rain water Dumping of overburden by tippers Shortage of Absenteeism skilled persons / deployment of unskilled Training not done as per requirement Manpower sanction not as per requirement Examination for workmanship certificate not done regularly 7 Poor Negligence / Lack of commitment Supervision Not having proper knowledge /experience Inadequate training Lack Of Awareness Shortage of Supervisors Non existence of documented procedures Improper / inadequate training Improper communication Inadequate publicity /objective not explained Employment of cont. workers Training of contractor workers Proper deptt. supervision STEP 3,Table: Control Measures & s For Respective Mechanisms Contributing Hazards Fires Explosives magazine Not taking proper shelter not withdrawn from danger zone. Proper cleaning & maintain Explosive safe distance. Rule USE OF EXPLOSIVES / BLASTING Monitor the efficacy of taking shelter. Mark the danger zone Posting of proper guards before blasting. Sairons before blasting. Rule 62, 63 & 164 Rule 62, & MMR REG. 164 Drilling & blasting procedure. Blasting procedure. /N RESPONSIBLE PERSONS Magazine Incharge / foreman & blaster / foreman & blaster 128

5 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited Searching of Examination of blasting side MMR 166, sockets / after blasting and before 167 & 168 for dealing misfired shot start of drilling in every with misfire shift. & sockets. Proper dealing of misfired shorts. Blasting Proper handling of explosives. Mechanism CONTROL MAINTENANCE SCHEDULES NOT FOLLOWED By passing protective devices Unskilled operators Moving parts of the machineries Movement of machineries at mining Explosives not be used by unauthorized and unqualified persons. Implement, Monitor & / or take corrective action for non compliance. Stop machine if protective device is not functioning. Stop machine if skilled operator is not present train more operators. Fence moving parts of machine & don't allow people wearing loose dresses. Not to allow the working of man and machineries at one place. Isolite the areas by suitable 158 (1),(2),(3) & (4), 161, 162 MACHINER RELEVANT STATURE 2(9), 2 (15), 172 2(9), 2 (15), 117 CIR, (1)/ , for Handling of Explosive. DP/BK/MNT /7.5.1 ISO 9001 WI/BK/MNT 1-15 DP/BK/MNT /7.5.1 ISO 9001 WI/BK/MNT Unsafe practices Act STANDING ORDERS. Unsafe practices Act standing orders & & EXISTING / foreman & blaster / foreman & blaster RESPONSIBLE PERSONS /N / / / / / 129

6 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited faces fencing. Proper supervision. /03 Movement of trucks & dumpers in hilly areas Failure brakes of Provide proper graded roads of proper width and minimum turning etc. One way traffic preferable Regular checking and inspection of brakes. Provide double braking system. 176, DGMS TECH. CIR. NO. 1 / , DGMS TECH. CIR. NO. 1 / 1989 /03. DP/BK/MNT / / / Over Speeding Avoid over speeding. Traffic signals on road to be provided. CIR NO. 1 / 1989 /1-15 / Reversals Failure of benches / ing on steep slopes ing on high benches Automatic reversing horns to be provided on dumpers. Provide supervision by sporters To maintain benches as per safety regulations. Regular inspections for bench failures at the beginning of the shift and during the shift by competent persons. To provide safety belts and ropes or suitable fencing to prevent falling of persons from high benches. CIR NO. 1 / 1989 WORK /1-15 OPEN CAST WORKINGS 106 2(B) 106 2(B) for safety in opencast working, Procedyure DP/BK/MIN /7.1 procedure reg. working on high benches. work instruction / /N,, 130

7 FALL STONES AND SIDES Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited no. /01,02& 03 OF Not working on the faces one above another (B), procedure Withdrawl of persons 111, 117 for safety in working on the next bench opencast down below before any working work regarding dressing, cleaning etc. is done on higher bench. Scattered loose boulders working faces on ing of manpower and machineries near each other. BREAKING OF boulders by manual labourers Steeps gradient of the roads,curves and benches Drilling on high benches Loading of trucks by manual labourers Clean working faces at the end of every shift. To totally stop by providing fencing / bearer between manual and machine working face. Use proper sladge hammers for breaking. Use of protective gogals and knee caps and safety helmat while breaking the boulders. Proper layout of roads. One way traffic. Use safety belts and ropes while drilling. Remove labourers for nearby areas. Use protective helmets 106 2(B), 117, , 2(B), 118 CIRE NO. 1 / (B), , procedure for safe- fety opencast working in DP/BK/MIN /7.1 DP/BK/MIN /7.1 As per regulation & standing order. for Opencast working ISO NO. DP/BK/PQD /7.5.5, 131

8 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited DUMPS Failure of slopes by flowing rain water Dumping of overburden by tippers To provide proper drainage system before rains. Regular cleaning of drains after every heavy rains. Not to dump o/b at the edge To provide stop block at the edge. To dump the O/B at least 2mtr. within the edge. To remove persons from the toe of the dumps and dumps slopes CIR. NO. 1/1989, 1995 & 96, CIR. NO. 1/ 1989 Water drainage plan pre monsoon & monsoon audit. Overburden dumping Auditing of dumping. /N POOR SUPERVISION Negligence / Monitoring motivation & Lack of enforcement of discipline. commitment Not having proper knowledge /experience Inadequate training. Shortage of Supervisors. LACK OF AWARENESS Training & feed back. Training & feed back. Recruitment, Transfer & Train to become competent. 41, 42, 46,47, , 42, 46,47, , 42, 46,47, , 42, 46,47, 116 DP/BK/- MIN/7.1 DP/BK/- MIN/6.2.2 DP/BK/- MIN/7.1 DP/BK/- MIN/7.1 /N /N / / / / 132

9 Bhadwasi Gypsum Mine, Rajasthan State & Minerals Limited Non Document all procedures & MMRS REG. & existence of issue to concerned persons documented EXISTING procedures. Improper / inadequate training Improper communicati on Inadequate publicity /objective not explained. Training & feed back. - - Detailed written communication either by letter or on notice board. DP/BK/VT/ & EXISTING Explain the objective. - & EMPLOMENT OF CONTRACTORS WORKERS Training of Proper Training & Feed Back MVTR 1996 Contractor RULE 6 TO 11 persons. EXISTING DP/BK/VT/6.2.2 /N / / / / /