1) One of the specific TOR was “A clarification from GPCB whether addition of this

unit would be absorbed by Dahej-1”. However, PP has not submitted the

clarification. Copy of the recommendation of GPCB for the proposed project to be

submitted.

Answer:

2) Details of measures to be taken while handling NaCN.

Answer: Storage of Sodium Cyanide:

Sodium Cyanide will store in closed room of 10 m x 10 m and it will locked always. Only authorised

person will be allowed in storage room with PPE’s. Key of lock will be kept only authorised person.

Sodium Cyanide Transportation, Unloading and handling Procedure:

SR.NO. ACTIVITY TYPE OF POSSIBLE

HAZARD

MITIGATION MEASURES

1 Transportation of

Sodium Cyanide by

road truck

Leakage, Spillage,

Toxic release in

case of direct

contact or

ingestion

• Close pack M.S. drums with seal.

• Transport by dedicated container

• No hazard during transportation due to solid pallets.

• Isolate the contaminated area

2 NACN storage and

handling safety

Leakage, Spillage,

Toxic release in

case of direct

contact or

ingestion

• Separate stored in double locked room.

• To adopt close procedure like charging with hopper

hood & blanketing by nitrogen pressure.

• Away from water sources.

• Total body protection suite will be provided to charging

operator with air line respirator.

• Safe operating (Charging) procedure will be prepared

and displayed in process and storage area.

• Total close process for charging and handling.

• Antidote kit for cyanide will be kept ready in OHC.

• Training is being provided to handle NACN,

• SCBA sets are available in handling area.

3) Chlorine handling and management system to be provided.

Answer: Activity: CHLORINE (CL2): Storage Of Chlorine Tonner At Storage Facility And Handling Of

Chlorine:

No Hazard Sub Hazard Status

Risk Assessment with

consideration of control

measures Control Measures will be

provided.

Severity Probability Risk

1 Fall of Tonner

from FLT.

Body injury and

property

damage

A Serious Highly

unlikely

Moderate FLT will be maintained in good

condition. Train driver will be

employed. Good road condition

will be maintained. Tonner will

be transferred only when Tonner

with Valve protecting cap. SBA

sets, Cl2 Emergency Kit, Air line

Respirator, All ADEQUATE PPE

etc. Will be provided as required.

FRP hood with alkaline scrubber

will be provided. Continuous

monitoring system for chlorine

will be installed and maintained.

On site Off site Emergency plan

will be revised, amended and

rehearsed on regular basis.

Toxic gas

release if

Tonner valve

breakage.

E Serious Highly

unlikely

Moderate

2 Bursting of

Tonner / Valve

due to storage

in open area.

Toxic gas

release

E Serious Highly

unlikely

Moderate Same as above and chlorine will

be stored and used under Shed

to protect from direct sun light.

Tested Tonner will only be

utilized & CCE approval will be

taken. Hot work will be

performed under safety work

permit only.

3 Leakage from

transfer line.

Eye contact A Serious Highly

unlikely

Moderate Chlorine transfer line will be

maintained in good condition.

Will be checked periodically.

Good and sound material will be Skin contact A Moderate Unlikely Moderate

No Hazard Sub Hazard Status

Risk Assessment with

consideration of control

measures Control Measures will be

provided.

Severity Probability Risk

Inhalation of

gas

A Serious Unlikely Significant used for transfer line. Apron,

Hand gloves, gumboot, goggles,

helmet and canister mask will be

provided Ammonia torch will be

provided.

Following measure will be provided- proactively and maintained, to control / reduce the risk,

for PROPOSED FACILITY:

1. CHLORINE (CL2)

1) CCE approved premises with adequate arrangement provided.

2) Apron, Hand gloves, gumboot, goggles & helmet provided

3) ISI Portable fire extinguisher & Hydrant line is provided as per TAC norms.

4) Sufficient amount of sand/soil are kept to control any spillage.

5) Flame proof fitting provided.

6) Emergency CL2 kit.

7) Ammonia Torch.

8) FRP Hood with blower with & pack tower with dil. NaOH circulation tank for emergency

scrubbing

9) Sufficient Nos. of SBA sets & 2 No. of Air line mask.

10) Continuous monitoring system with alarm.

11) OHT crane for Cylinder handling.

12) Water pit.

13) Wind Cock for wind direction.

14) Preventive maintenance on regular basis.

Mitigation Measures in case of Chlorine Leakage:

• Evacuate the area in down wind direction: Evacuate area in down wind direction up to 300 meter.

• Do not direct water at spill or source of leak.

• If possible, turn leaking containers so that gas escapes rather than liquid.

• Use Chlorine Emergency Kit to attend the leak.

• Absorb the fumes through Chlorine Hood with blower.

Preventive measures to avoid such emergency:

♦ Chlorine Emergency Kit will be procured and kept ready at chlorine shed.

♦ Chlorine Hood with blower will be provided with scrubbing arrangement.

♦ SCBA sets will be kept ready at chlorine handling area.

♦ Safety Shower and eye wash will be provided in Chlorine shed area.

♦ Chlorine absorption system will be provided. In case of chlorine leakage in chlorine shed it will be

suck through blower and it will be scrubbed in Caustic scrubber.

♦ Emergency siren and wind sock will be provided.

♦ Tele Communication system and mobile phone will be used in case of emergency situations for

communication.

♦ First Aid Boxes and Occupational health centre will be made at site.

♦ Emergency organization and team will be prepared as per On site-Off site emergency planning.

♦ Full body protection suite and other PPEs will be kept ready in ECC at site.

♦ Emergency team will be prepared and trained for scenario base emergency. Like Toxic control team,

Fire control team, First aid team, Communication and general administration team, Medical team

etc.

4) Clarification regarding notification of GIDC Dahej -1 to be obtained from Industry

Department.

Answer: