chapter - 7 additional studies- risk assessment report

Aqua Air Environmental Engineers Pvt. Ltd. 364

CHAPTER - 7

ADDITIONAL STUDIES- RISK ASSESSMENT REPORT

In order to support the environment impact assessment and environment management

plan, following additional studies have been included in the report.

• Risk assessment

• Disaster Management Plan

• On site and off site emergency action plan

• Occupational Health and Safety Management System

7.1 RISK ASSESSMENT

7.1.1 INTRODUCTION

Hazard analysis involves the identification and quantification of the various hazards (unsafe

conditions). On the other hand, risk assessment deals with recognition and computation of

risks, the equipment in the plant and personnel are prone to, due to accidents resulting

from the hazards present in the plant.

Risk assessment follows an extensive hazard analysis. It involves the identification and

assessments of risks to neighboring populations are exposed to as a result of hazards

present. This requires a thorough knowledge of failure probability, credible accident

scenario, vulnerability of population etc. Much of this information is difficult to get or

generate. Consequently, the risk assessment is often confined to maximum credible

accident studies. It provides basis for what should be type and capacity of its on-site and off-

site emergency plan also what types of safety measures shall be required.

7.1.2 APPROACH TO THE STUDY

Risk involves the occurrence or potential occurrence of some accidents consisting of an

event or sequence of events. The risk assessment study covers the following:

• Identification of potential hazard area;

• Identification of representative failure cases;


• Visualization of the resulting scenarios in terms of fire and explosion;

• Assess the overall damage potential of the identified hazardous events and the

impact zones form the accidental scenarios;

• Furnish the recommendations on the minimization of the worst accident possibilities

• Preparation of Disaster Management Plan;

• Emergency Plan, which includes Occupational and Health Safety Plan;

7.1.3 METHODOLOGY

Quantitative risk assessment (QRA) is a means of making a systematic assessment of the

risks from hazardous activities, and forming a rational evaluation of their significance, in

order to provide input to a decision-making process. The term ‘quantitative risk assessment’

is widely used, but strictly this refers to the purely numerical assessment of risks without

any evaluation of their significance. The study has been conducted based on the premises of

a traditional Quantitative Risk Assessment. The key components of a QRA are explained

below, and illustrated in Figure-7.1 and Figure-7.2.

FIGURE – 7.1

QRA METHODOLOGY


FIGURE–7.2

FLOW CHART FOR QUANTITATIVE RISK ASSESSMENT

Start Identify Risk Areas

Select a Risk Area

Identify Failure Cases

Select a Failure Cases

Identify Consequence Outcomes

Select Consequence Outcomes

Determine Frequency

Estimate Consequence

Record Frequency and Consequence in a summary Table

Have all Consequence outcomes been studied?

Have all failure cases been studied?

Have all risk areas been studied?

Draw Risk Contours Finish

Yes

Next Next


7.1.4 HAZARD IDENTIFICATION

Identification of hazards in the proposed project activity is of primary significance of the

analysis, and quantification. Hazard states the characteristics of system/plant/process that

presents potential for an accident. All the components of a system/plant/process need to be

thoroughly examined to assess their potential for initiating or propagating an unplanned

event/sequence of events, which can be termed as an accident.

7.1.4.1 IDENTIFICATION OF HAZARDOUS AREAS

The procedure for QRA starts with identification of major risk areas in the installation.

Operation carried out in specialty and agrochemical Industries usually come under certain

board, general categories. At major risk areas are as follows:

• Bulk storage area for raw materials at ambient temperature and atmospheric

pressure.

• Process plant involving pumping, transportation, reactors, distillation, heating, cooling,

etc.

• Bulk loading and unloading from storage tanks to road takers and vice versa.

7.1.4.2 IDENTIFICATION OF FAILURE CASES FOR HAZARDOUS AREAS

• Release due to catastrophic failure of storage tanks or process vessels.

• Rupture of connected pipe with storage tank or process vessels.

• Continuous release at significant rates for long durations transfer pipelines caused by

sudden, major break of the pipeline.

• Continuous release at low rate through small holes or cracks in piping and vessels, flange

leaks, and leakage from pump glands and similar seals.

It is to be noted that for Quantitative Risk Assessment, worst case scenarios consider,

though their frequency of occurrence is much lower than the cases of small leaks.


7.1.4.3 MAJOR HAZARDOUS AREAS

The hazardous chemical storage area is shown in Figure-7.3. The major Hazardous chemicals

to be stored, transported, handled and utilized within the plot area are summarized in the

Table-7.1. Other hazards and control measures are summarized in Table-7.2.

Facilities/System for process safety, transportation, fire fighting system and emergency

capabilities to be adopted are stated below.

FIGURE-7.3

HAZARDOUS CHEMICAL STORAGE AREA


TABLE-7.1

STORAGE AND HANDLING DETAILS OF HAZARDOUS CHEMICALS (1 WEEK)

Sr.

No.

Raw Materials Required Raw

Material

Mt/Month

Actual

Storage

Capacity

Mt/Month

Type Of Storage No.

Of

Vesse

l

Vessel

Capacit

y

Type Of

Hazard

1. Sulphuric acid 626.75 54.0 Tank 01 30 kl Corrosive

2. Hydrochloric acid 2070 185.0 HDPE Tank 04 40 kl Corrosive

3. Aniline 123.46 27.5 SS Tank 01 25 KL T & F

4. AlCl3 950.37 100.0 Bags/Jumbo bags - - T

5. Chlorine 440.80 4.5 Cylinder/

Tonner

05 900 kg T

6. Phenol 1856.40 44.0 SS Tank 01 40 KL T & F

7. Toluene 2536.34 17.2 SS Tank 01 20 KL T & F

8. EDC 1256.28 25 SS Tank 01 20 KL T & F

9. MCB 1043.80 22 SS Tank 01 20 KL T & F

10. Nitric acid 474.42 28 Aluminium /SS

Tank

01 20 KL C

11. Nitrosyl sulphuric

acid 40%

639

16 SS Tank 01 10 KL T & F & C

12. Thionyl chloride 53.75 5.0 Drums 20 250 kg T & C

13 Hydrogen gas 13.38 9.0 Cylinder 180 50 kg F

14. Benzene 564.7 17.2 SS Tank 01 20 KL T & F

15. Hexane 593.71 17.2 SS Tank 01 20 KL F

16. MDCB 864.33 65.0 MS Tank 01 50 KL F

17. Ferric Chloride 0.78 0.5 Bags 20 50 Kg C

18. Caustic Soda 38.83 5 Bags 100 50 Kg T & C

19. Sodium

Bicarbonate

15.86 5 Bags 100 50 Kg -

20. Activated Carbon 7.15 1 Bags 40 25 Kg -

21. Fluorobenzene 560.81 70 Tanks 01 50 KL F

22. NMP 186.047 17.2 SS Tank 01 20 KL T

23. DMF 0.406 17.2 SS Tank 01 20 KL F& T

24. IPA 97.76 17.2 SS Tank 01 20 KL F


25. Ammonia 12.53 1 Cylinders 20 50 Kg C & T

26. Acetic Acid 0.37 20 Tank 01 20 KL F & C

VAL ORGANIC PVT. LTD.

Prepared By: Aqua-Air Environmental Engineers Pvt. Ltd., Surat 371

TABLE 7.2

OTHER HAZARDS AND CONTROL

SR.

NO.

NAME OF THE POSSIBLE

HAZARD OR

EMERGENCY

ITS SOURCES

&

REASONS

ITS EFFECTS ON

PERSONS, PROPERTY

& ENVIRONMENT

PLACE OF ITS

EFFECT

CONTROL MEASURES PROVIDED

1 BOILER

(1) Burning

(2) Physical injury

(3) Explosion

Over pressure in the boiler if

safety valve not working.

Water level indicator not

working. Low water level

indicator fail. High temp.

System fails.

Minor/Major Injury

Loss of human life

Loss of property (Loss

of Main/Machine

Material)

Boiler House and

surrounding places

Lower & Upper Level Indication System provision. Safety valves

for pressure control fixed temp. & pressure indicator provided.

Blow down & blowing system provided for cleaning tube and

shell. Soft water used. Inter locking provided on pumps, FD fan, ID

fan. Periodical checking & inspection maintenance done. Yearly

inspection done by Boiler Inspector

2 ELECTRICITY

(1) Burning

(2) Fire

(3) Shock

Loose Contacts, Weak

earthling Short Circuit

Improper Insulation

Burning, Shock,

Death

Surrounding the

accident area

Proper Earthing, Periodical Checking of joints, proper insulations

of Equipments, etc. Flame proof fitting in solvent storage area,

bounding and jumpers to all solvent barrier lines provided.

3 HOUSE KEEPING

(1) Physical

(2) Burning

(3) Fire

(4) Chemical Exposure

Bad House keeping Physical/Chemical

Thermal Burn Injury

(Major/Minor)

In all surrounding

areas i.e. Storage,

Plants

Proper Handling, regular cleaning, Proper placement of material

(RIGHT THING AT THE RIGHT PLACE)

4 PIPE LINE LEAKAGES

Spillages etc.

Leaking of pipe line due to

corrosion, Loose contact etc.

Physical/Chemical

Thermal Burn Injury

Plant area Proper maintenance, Proper Selection of Material for pipe lines,

Immediate attention, Earthing provided, flame proof fitting, NO



(1) Corrosion

(2) Toxic gas release

(Major / Minor) SMOKING Boards displayed.

5 Structural Failure Inside the factory (Corrosion) Injury/Death to

persons, damage to

property

Within the factory Automatic operation Periodic Testing of safety valves Regular

Inspection and Maintenance

6 Toxic Release from

outside

Outside the factory Injury/Death Within & outside

the unit

Alarm, Evacuation rescue & shelter/ Welfare

7 Natural Calamity Nature Injury/Death to

persons, damage to

property

Within & outside

the unit

Alarm, Evacuation rescue & shelter/ Welfare



HAZARDOUS PROPERTIES OF THE CHEMICALS, COMPATIBILITIES AND SPECIAL HAZARD

Table-7.3

Sr.

No

NAME OF

CHEMICAL

HA

ZA

RD

FLA

SH

PO

INT

0C

BP

0C

LEL

%

UEL

%

SP.GR

20

0C

VD

SO

LUB

ILIT

Y W

ITH

WA

TE

R

at

20

0C

NFPA

H F R

HAZARDOUS

COMBUSTION

PRODUCT

TLV

PPM

IDLH

PPM

LC50

mg/m3

TARGET

ORGANS

CA

RC

INO

G-

EN

ICIT

Y

ANTIDOTE

1 Anhydrous

Hydrofluoric acid

CAS# 7664-39-3

H/T NA 19.5 NA NA 0.97 1.3-1.9 Very soluble

(violent

reaction)

4 0 1 Hydrogen over an

extended period of

time in steel

cylinders and

systems

3 30 1276 ppm (rat, 1

hour)

Eyes, skin, airway,

lungs, liver, kidney,

heart and bone.

No No specific antidote

2 Chlorobenzene

CAS# 77-73-6

F 32 150-

190

0.8 6.3 0.977 4.5 insoluble 1 3 1 Toxic and irritating

gases

5 NL 500 Eyes, skin,

respiratory system,

central nervous

system, kidneys


3 Diethylether & Toluene

CAS# 60-29-7

F -40 34.6 1.8 48 0.714 2.55 soluble 1 4 1 CO, CO2, Peroxides 400 1900 Inhalation - mouse -

30 min - 31000 ppm

Eyes, skin,

respiratory system,

central nervous

system


4 Dimethylformamide

CAS# 68-12-2

T/F 57 153 2.2 15.2 0.949 2.51 Easily soluble 2 2 0 carbon oxides,

nitrogen oxides

10 500 Inhalation, rat: LC50

= 3421 ppm/1H;

Eyes, skin,

respiratory system,

liver, kidneys,

cardiovascular

system

Yes No specific antidote



5 Ethanol

CAS# 64-17-5

F 14 78 3.3 19 0.790 1.59 soluble 2 3 0 CO, CO2, irritating

and toxic fumes and

gases

1000 3300 Inhalation - rat - 10 h

- 20000 ppm

Eyes, skin,

respiratory system,

central nervous

system, liver, blood,

reproductive system

Ethanol has

been shown to

produce

fetotoxicity in

the embry o or

fetus of

laboratory

animals

Teratogen

Reproductive

effect

Mutagen

2 gm sodium bi

carbonate in 250 ml

water, Diazepam 10

mg through injection

6 Ethyl Acetate

CAS # 141-78-6

F -4.0 77.0 2.0 11.5 0.902 3.0 1 ml/10ml

water

1 3 0 Irritating Vapour 400 2000 200 gm/m3 Eyes, skin,

respiratory

system


7 Methylene chloride

CAS# 75-09-2

H/T NA 39.75 12 19 1.3266 2.93 Partially

soluble

2 1 0 CO, CO2,

halogenated

compounds.

50 52000 1 hours [Rat]. lungs, the nervous

system, liver,

mucous

membranes, central

nervous system

Yes Classified

2B

(Possible for

human.)

by IARC

No specific antidote

8 o-Xylene

CAS # 1330-20-7

F 31 143-

145

1.7 7.6 0.878 3.7 0.2 g/l 3 2 0 CO, CO2 100 900 4550 ppm 4 hour(s)

[Rat].

Eyes, skin,

respiratory system,

central nervous

system,

gastrointestinal

tract, blood, liver,

kidney

No Diazem – 1

mg/Kg.(Intraveno us),

Epinephina, Efidrine

9 Toluene F 4.0 111 1.1 7.1 0.87 3.2 Insoluble 2 3 0 Irritating Vapour 50 2000 400 ppm for 24Hr Rat Eyes, skin, No Diazem – 1



CAS # 108-88-378 generated respiratory system,

central nervous

system,

liver, kidneys

mg/Kg.(Intraveno us),

Epinephina, Efidrine

10 Hexane

CAS #110-54-3

F -7 68.7 1.2 7.7 0.659 3.0 - 1 3 0 CO & CO2 50

ppm

5000

ppm

- No No specific Antidote

11 Sodium methoxide

CAS #124-41-4

F 60.55 300 7.3 36 0.996 1.3 Reacts with

water

3 4 3 CO, CO2, sodium

oxide

200 6000 NA Respiratory

system,

gastrointestinal

system, eyes,

skin

No No specific Antidote

12 Acetic Acid

CAS No. 64-19-7

T / F 44.

4

117

.9

5.4 16.

0

1.01

5

2.1 Soluble 2 2 1 Irritating

Vapour generated

10

ppm

50

ppm

5620 ppm/1H Teeth, eyes,

skin, mucous

membranes

No Milk of magnesia.

13 Ammonia

(Anhydrous) CAS #

7664-41-7

C NF - 33.3 15.5

0

27 0.681

9

at -30 C

(Wate r)

0.597

0 at

00C 1

atm

(Air 1)

Liq.

608.7

kg/m 3

210C

Gas

0.771

kg/m 3

00C

Insoluble 3 1 0 N A 25

ppm

300

ppm

7040 mg/m3 Eyes, skin,

respiratory system

No Smelling Ethanol or

Ether

14 Bromine

CAS #7726-95-6

C/T -- 58.7

8

-- -- 3.11 7.1 Soluble in

water

3 0 0 Non combustible 0.2

ppm

3.0

ppm

2600 mg/kg [Rat respiratory system,

eyes, central

nervous system,

skin

No Put two or three

drops of Pontocane

(0.5 solution) or

Benoxinate

(Novesine) 0.4



%. If problem in

respiration, give milk,

butter-milk or lemon

juice or make a small

cotton ball and

drench with ethanol

or ether solution

drops and put it near

victim’s nose for

smell. Apply pure

oxygen.

15 Dichloro Methane

(MDC, DCM )

CAS#: 75-09-2

T N.F 39.8 14.0 22.0 1.325 2.9 20 g/ lit. 2 0 1 CO, CO2, Cocl2, HCL

(g) generated

25 2300 52 gm/m3 inhalation

-

rat

blood, central

nervous system

Yes

Cancer Site [in

animals: lung,

liver, salivary

& mammary

gland tumors]

No specific antidote.

16 Chlorine

CAS #7782-50-5

T - The

lowest

known

value is

100°C

NA NA 1.424 0.62 Boils 3 0 0 Toxic and irritating

gases

1 10 1017 ppm For human Eyes, skin,

respiratory system

No Milk butter and milk

of magnesia.

17 Chloro Benzene

CAS # 108-90-7

T/F 28 132 1.3 9.6 1.11 3.9 Insoluble 2 3 0 Phosgene &

Hydrochloric gases

generated

75 1000 22,000 ppm Rat Eyes, skin,

respiratory system,

central nervous

system, liver

No Diazem – 1

mg/Kg.(Intraven ous)

Epinephina,

Efidrine

18 Ethyledichloride

CAS# 107-06-2

F/T 13 83 6.2 15.

9

1.25

3

3.4 0.87 % 2 3 1 Hcl, Phosgene NIOS

H- REL: 1

50 N.L Eyes, skin,

kidneys, liver,

Yes

Cancer Site [in

No specific

antidote



ppm central nervous

system,

cardiovascular

system

animals:

forestomach,

mammary

gland &

circulatory sys

cancer]

19 Hydrazine hydrate F/T 75 113.

5

3.5 99.9

9

1 1.1 Soluble in

water

3 2 2 Irritating & toxic Gas NL NL Acute: 570 ppm

4 hour(s) [Rat].

lungs, liver,

mucous

membranes.


20 Hydrogen Gas

CAS # 1333-74-0

F/E N.A. - 252.

8°C

3.0 74 0.069

6

- Soluble in

water

1 4 0 Explosive gas 250

ppm

LC50 >800000

ppm rat

lungs, heart, upper

respiratory tract,

central nervous

system (CNS)


21. Liquified Petroleum

Gas CAS# 74-98-6

F/H -104 - 42.04 2.1 9.5 0.58 1.5 Very lightly

soluble

2 4 0 CO, CO2, H2 gas 1000 2100 inhalation rat 658

mg/l/4h

central nervous

system

No Oxygen is the

antidote for

asphyxiant poisoning.

22 Methanesulfonyl

chloride (MSCl)

CAS# 124-63-0

T/C 110 161 NA NA 1.481 3 NA 3 1 1 CO, CO2,

halogenated

compounds

Nl NL NL Eyes, skin, airway,

lungs

NA No specific antidote

23. Methanol

CAS# 67-56-1

F/T 10 54 5.4 44 0.792 1.1 Soluble 1 3 0 Irritating vapour 200 6000

LEL

64000 ppm for 4H rat Kidneys, heart,

central nervous

system, liver,

eyes

No 10 mg diazepam

through injection

Activated

Charcoal

24 Oleum

Component:

SULFURIC ACID-

CAS# 7664-93-9:

SULFUR TRIOXIDE-

T/C

Stro

ng

oxed

izer

NA 65 NA NA 1.992

at 4 C

NA miscible 3 0 2 Toxic and

irritating

vapors

1

mg/m

3

15

mg/m

3

510 mg/m3 for

2 hrs RAT

Teeth, Lungs,

Heart,

Respiratory

system,

Cardiovascular

No Sodium Hydro-

Carbonate (4%

Conc.), Milk,

Lime Juice, Milk

of Magnesia



CAS# 7446-11-09 system

25 P-Chloro toluene

CAS# 106-43-4

F/H 49 162 0.7 12.2 1.07 4.4 Insoluble 1 2 0 CO , HCL gas,

possibly phosgene .

Reacts with

strong oxidants.

NL NL Inhalation (rat):

>26700

ppm/1h

Eyes, skin,

respiratory system


26 Sulfuric Acid

CAS # 7664-93-9

C -- 340 -- -- 1.84 -- Water

reactive

3 0 2 Non combustible 1

mg/ m3

15

mg/m

3

510 Rat Skin, eyes, Lung, No Sodium Hydro-

Carbonate (4%

Conc.), Milk, Lime

Juice, Milk

of Megnesia

F = FIRE T = TOXIC C = CORROSIVE

E = EXPLOSIVE R = REACTIVE STEL = SHORT TERM EXPOSURE LIMIT

BP = BOILING POINT LEL = LOWER EXPLOSIVE LIMIT PPM = PARTS PER MILLION

UEL = UPPER EXPLOSIVE LIMIT SP.GR = SPECIFIC GRAVITY VD = VAPOUR DENSITY

ER = EVAPORATION RATE H = HEALTH HAZARD CLASS F = FIRE HAZARD CLASS

R = REACTIVE HAZARD BR = BURNING RATE TLV = THRESHOLD LIMIT VALUE

NFPA =NATIONAL FIRE PROTECTION ASSOCIATION-usa N.A = NOT AVAILABLE N.L =NOT LISTED



Sr.

No.

Hazardous

Chemical

B.P.

º C

M.P.

º C

Flash

Point

º C

LEL

UEL

%

TLV ppm or

mg/m3

LD50

mg/kg &

LC50 mg/l

Pressure

kg/cm2 Temp °C

Sp.Gr.

(water =1

Vapour

Density

(air = 1)

Odour

Threshold

ppm or

mg/m3

1 Phenol 181.7 40.5 79°C 1.8%

- 8.6%

5 ppm or

19 mg/m3

LD50: 270 mg/kg

[Mouse] _ 694.2 1.057 3.24 0.048 ppm

2 NaOH 1388 318-323 _ _ 2 mg/m3 LD50 = 500mg.kg

(Rabbit, Oral) _ _ 2.13 _ _

3 Carbon

Dioxide -78.5 _ _ _ 5,000 ppm 470,000 ppm (Rat) _ 31 1.522 _

4 Sulphuric Acid 2790 -35 _ _ 0.2 mg/m3

LD50: 2140 mg/kg

[Rat] &

LC50: 320 mg/m3 2

hours [Mouse]

_ _ 1.84 3.4 -

5 Salicylic Acid 200 157-159 157 LEL =

1.1% _

LD50 = 480 mg/kg

(mice, oral) &

LC50: = 90 mg/L,

48h static

(Leuciscus idus)

_ 540 °C 1.443 4.8

6 Zinc Chloride 732 290 _ 2 (mg/m3) _ _ 2.907 4.7 _

7 Salicyldehyde 196 to 197 -7 78 _ _ LD50 = 520 mg/kg _ _ 1.1674 4.2 _



[Rat, Oral]

8 Sodium

Acetate 881.4 324 >250 _ _

LD50 = 3530 mg/kg

(oral, rat) _ _ 1.45 _ _

9 Ethanol 78.24 −114.14 12.78 3.3 - 19 1,000 ppm

LD50: 3450 mg/kg

[Mouse] &

LC50: 39000 mg/m3

4 hours [Mouse].

_ 243 0.789 1.59 100 ppm

10 Acetic Acid 118 to 119 16 to 17 39-40 4 -

19.9 10 ppm

LD50 = 3.31 g kg−1,

oral (rat) &

LC50 = 5620 ppm

(mouse, 1 hr)

_ 321.67 1.049 2.07 0.48 ppm

11 Hydroxylamine

Hydrochloride _ 155 to 157 152 _ _

LD50: 408 mg/kg

[Rat]. _ _ 1.67 _ _

12 Sodium

Formate decomposes 253 _ _ _

LD50: 11200 mg/kg

[Mouse]. _ _ 1.92 _ _

13 Formic Acid 100.8 8.4 69 18 -

57 5ppm

LD50 = 700 mg/kg

(mouse, oral) &

LC50 = 7853

ppm(rat, 15 min)

3246 ppm (mouse,

15 min)

_ _ 1.22 0.59 0.625 ppm

14 2-Hydroxy 92 - 93 4 - 6 110 _ 200 _ _ _ 1.131 _ _



Aceto

Phenone

ppm

15 Sulfur 444.6 115.21 207 _ LD50 : >8437 mg/kg

[Rat] _ 1040 2.07 _ _

16 Morpholine 129 −5 35 1.8 -

11.2 20ppm

LD50 = 1050 mg/kg

(rat, oral) &

LC50 = 365 ppm

(mouse, 2 hr)

_ _ 0.9168 3 0.1 ppm

17 Sodium

Bicarbonate _ _ incombustible _ _

LD50 = 4220 mg/kg

( rat, oral ) _ _ 2.159 _ _

18

P-toluene

Sulfonic Acid

(Catalyst)

140 °C at

20mm/Hg 38 °C -20°C

2.6 -

12.8 750 ppm

LD50: 2840 mg/kg

(Mouse _ 235 0.82 1.59 62 ppm

19 Ethyl Acetate 77.1 −83.6 -4.4 2.2 - 9 400

ppm

LD50 = 11.3 ml/kg,

rat &

LC50 = 16000 ppm

(rat, 6 hr)

_ 250 0.902 3.04 3.9 ppm

20

Tri Ethyl

Benzyl

Ammonium

Chloride

_ 183-185 > 275 °C _ _ LD50 Oral = 2219

mg/kg ( Rat ) _ 185 _ _ _

21 2-Hydroxy 321.8 145-147 _ _ _ _ _ > 240 _ _ _



Phenyl Acetic

Acid

22 Methanol 64.7 −97.6 12 6 - 36.5 200 ppm

LD50 = 5628 mg/kg

(rat, oral) &

LC50 = 64,000 ppm

(rat, 4 hr)

_ 240 0.7915 1.11 100 ppm

23 Sodium

Carbonate _ 851 _ _ _

LD50 = 116.6 mg/kg

(rat, oral) _ _ 2.532 _ _

24 β -Naphthol 285 121 to 123 161°C _ _ LD50: 1960 mg/kg

[Rat, Oral] _ _ 1.22 4.98 _

25 KOH 1,327 360 Non-flammable _ 2 mg/m3 LD50 = 1.23 mg/kg

(oral, rat) _ _ 2.044 _ _

26 n-Paraffin _ 47 199 _ 2 mg/m3 _ _ _ 0.92 _ _

27

6-Hydroxy 2-

Naphthoic

Acid

_ 249 _ _ _ _ _ _ _ _ _

28 Carbon _ 3500 _ _ 3.5 mg/m3 _ _ 6810 3.51 _ _

29 O-Cresol 191 31 81 LEL =

1.4% _

LD50= 500 mg/kg

(rat, oral) _ 424 1.047 3.72 5 ppm

30 Sodium

Hydroxide 1,388 318 _ _ 0.1ppm

LD50 = 40 mg/kg

(mouse, _ _ 2.13 _ _



intraperitoneal)

31 ODCB 180.5 −17.03 66.0 2.2 - 9.2 _ LD50 = 500 mg/kg

(oral, rat, rabbit) _ _ 1.31 1.11 _

32 Urea _ 133 to 135 Non-flammable _ _ LD50 = 8500 mg/kg

(oral, rat) _ _ 1.323 2.07 _

33 Sulfamic Acid _ 205 °C

decomposed_ _ _

LD50: 1.6 gm/kg

[Rat, Oral] _ _ 2.15 _ _

34 Catalyst (

sod.sulphate) 1,429 884 Non-flammable _ _

LD50: 5989 mg/kg

[Mouse, Oral] _ _ 2.671 _ _

35 P-Hydroxy

Benzoic Acid decomposes 214.5 _ _ _

LD50 = 2200 mg/kg

(oral, mouse) _ _ 1.46 _ _

36 m-Cresol 202.8 11 86 LEL =

1.1% 5ppm

LD50= 242 mg/kg

(oral, rat) & LC50:

>710 mg/m 1 hours

[Rat, Oral]

_ 342.6 1.034 3.72 _

37 p-Cresol 201.9 34.8 86 LEL = 1% _

(LD50): 207 mg/kg

[Rat, Oral] & LC50):

355.5

ppm 4 hour(s) [Rat,

Oral]

_ _ 1.035 3.72 0.1 ppm

38 3- Hydroxy

Benzoic Acid _ 201-203 220 _ _

LD50 = 2000 mg/kg

(Oral, Rat) _ _ 1.48 _ _



39 Resorcinol 281 110 127.22 _ 20ppm LD50: 200 mg/kg

[Mouse, Oral] _ _ 1.272 3.8 _

40 Potassium

Carbonate Decomposes 891 _ _ _

LD50: 1870 mg/kg

[Rat, Oral] _ _ 2.29 _ _

41

Sodium Meta

Bisulfite

(Catalyst)

_ 150 _ _ 5 mg/m3 LD50 = 1131 mg/kg

[Rat, Oral] _ _ 1.4 _ _

42 Dimethyl

Sulphate 188 -31.8 83.3 _ 0.1ppm

LD50: 140 mg/kg

[Mouse, Oral] &

LC50: 45 ppm 4

hour(s) [Rat]

_ _ 1.3322 4.35 _

43

6 - Hydroxy 2-

Napthoyl

Chloride

160-162 50 113 _ _ _ _ _ _ _ _

44 Xylene 138.5 -47.4 29 1 - 7 100ppm

LD50: 2119 mg/kg

[Mouse, Oral] &

LC50 : 5000 4 hours

[Rat]

_ _ 0.864 3.7 1 ppm

45 Hydrogen Gas -252.76 -259.2 FLAMMABLE 4 -

75 _ _ _ _ 0.07 21.1 _

46 o-Chloro

Phenol 174.9 9.8 64 _ _

LD50: 40 mg/kg

[Rat, Oral] _ _ _ 4.4 1.24 ppm



47 EDTA _ 220-240 _ _ _ LD50 : 30 mg/kg

[Mouse, Oral] _ _ 0.72 _ _

48 3- Chloro

salicylic Acid _ 184-186 _ _ _ _ _ _ _ _ _

49

3-Chloro 2-

Methoxy

Benzoic Acid

Methyl Eater

_ _ _ _ _ LD50 = 50ml/kg

(Mouse) _ _ _ _ _

50 TBAB Decomposes 103.5 _ _ _ _ _ _ _ _ _

51

3-Chloro 2-

Ethoxy

Benzoic Acid

_ 118-123 _ _ _ LD50 = 30mg/kg

(Mouse) _ _ _ _ _

52 4-Chloro

Salicylic Acid _ 210 - 212 _ _ _ _ _ _ _ _ _

53

4- Chloro 2-

Methoxy

Benzoic Acid

_ 146 - 148 _ _ _ _ _ _ _ _ _

54 Para Chloro

Phenol 220 44 115 _

LD50: 1500 mg/kg

[Rat, Oral] _ _ _ 4.43 30 ppm

55 5- Chloro

Salicylic Acid _ 171 - 172 _ _ _

LD50 Oral = 250

mg/kg [Rat] _ _ _ _ _



56

5- Chloro 2-

Ethoxy

Benzoic Acid

_ _ _ _ _ LD50 Oral =

70mg/kg _ _ _ _ _

57 O- Creosotic

Acid _ 163-165 _ _ _

Oral, mouse: LD50 =

1 gm/kg & Oral,

rat: LD50 = 445

mg/kg

_ _ _ _ _

58 m-Creosotic

Acid _ 173-177 _ _ _

LD50 Oral - Mouse =

1,800 mg/kg _ _ _ _ _

59 p-Creosotic

Acid _ 151-154 _ _

Oral, mouse: LD50 =

1 gm/kg. _ _ _ _ _

60 Benzyl Alcohol 205.3 -15.2 93 _ _ LD50: 1040 mg/kg

[Rabbit, Oral] _ 441.85 1.04 3.72 5.5 ppm

61 Benzoic Acid 249.2 122.4 121 _ _

Inhalation, rat: LC50

= >26 mg/m3/1H;

& Oral, mouse:

LD50 = 1940 mg/kg;

_ _ 1.321 4.21 _

62 P-Cyano

Phenol

146°C at

2mm/ Hg 110-112.5 _ _ _

LD50: 450 mg/kg

[Mouse, Oral] _ _ _ _ _

63 Toluene 110.6 -95 4.4444 1.1 -

7.1 50ppm

LD50: 75 mg/kg

[Rat, Oral] ;

LC50: 440

_ 318.6 0.8636 3.1 1.6ppm



24 hours [Mouse]

64 n- Butanol 117.7 -89.5 28.9 1.4 -

11.2 _

LD50: 4.36 gm/kg

[Rat, Oral]; LC50:

8000

4 hours [Rat]

_ _ 0.81 2.55 1.2 ppm

65 Iso Propyl

Alcohol 82.5 -88.5 11.667

2 -

12.7

400

ppm

LD50: 3600 mg/kg

[Mouse, Oral];

LC50:

16000 8 hours [Rat]

_ 235 0.78505 2.07 22ppm

66 Iso Butyl

Alcohol 108 -115 28

1.2 -

10.9 50ppm

LD50: 2460 mg/kg

[Rat, Oral] _ 274.6 0.806 2.56 40ppm

67 Mix Xylene 137 -47.4 29 1 - 7 _

LD50 = 3,910 mg/kg

(Rat, Oral) & LC50 =

5,000 ppm / 4 hr

(Rat)

_ _ 0.864 3.7 _

68 Benzyl

Paraben 389.8 111 168 _ _

LD50 = 1000 mg/kg

(Rat) _ _ 0.8 _ _

69 Methyl

Paraben 270 131 _ _ _

LD50: >8000 mg/kg

[Mouse, Oral] _ _ 0.86 _ _

70 Ethyl Paraben Decomposes.

(297.5°C) 116 297-298 _ _

LD50: 3000 mg/kg

[Mouse, Oral] _ _ 0.68 _ _

71 Propyl Decomposes 96 185 _ _ LD50: 7500 mg/kg _ _ 1.06 _ _



Paraben [Mouse, Oral]

72 Butyl Paraben 356.5 68.5 _ _ _ _ _ _ 0.7 _ _

73 Iso Propyl

Paraben 286.9 84-86 120.4 _ _ LD50 >5,000 _ _ 0.68 _ _

74 Iso Butyl

Paraben 302.3 77 125.4 _ _

LD50: 3000 mg/kg

[Mouse, Oral] _ _ 0.8 _ _

75 2-Phenoxy

Ethanol 237 11 - 13 130 _ _

LD50 = 1260 mg/kg

(Rat, Oral) _ _ 1.1 4.8 _

76 Bronopol _ 130-133 167 _ _

LD50 = 3.05mg/kg

(Rat, Oral) & LC50 =

0.588 mg/l / 4hr

(Rat)

_ _ _ _ _

77 Sodium Propyl

Paraben 293 Decomposes _ _ _ LD50 3332mg/kg _ _ 1 _ _

78

Propylene

Glycol or

Water

188 -59 99 2.6 -

12.5 _

LD50: 18500 mg/kg

[Rabbit, Oral] _ _ 1.036 2.62 _

79 Diazolidinyl

Urea _ 150 _ _ _

LD50: >2250 mg/kg

[Birds, Oral] _ _ 1.834 _ _

80 Sodium Butyl

Paraben 309 Decomposes _ _ _ _ _ _ 0.62 _ _



81

Sodium

Methyl

Paraben

_ >125 _ _ _ LD50: 7500 mg/kg

[Mouse, Oral] _ _ 0.68 _ _

82 Sodium Ethyl

Paraben _ _ _ _ _ _ _ _ 0.65 _ _

83 Di ethyl

Sulphate 208 24 104

LEL =

4.1% _

Oral, mouse: LD50 =

647 mg/kg & LC50

rat: >250 ppm/4H

_ _ _ 5.3 _

84 2-Ethoxy

Benzoic Acid 19.3-19.5 174-176 110 _ _

LD50 = >5000

mg/kg (Rat, Oral) _ _ 1.105 _ _

85 4-Ethoxy

Benzoic Acid _ 197-199 110°C _ _ _ _ _ 0.58 0.58 _

86 4- Iso Propoxy

Benzoic Acid 150 164-167 _ _ _ _ _ _ 0.7 1.046 _

87 Iso Propyl

Bromide 59.38 -89 1

LEL =

4.6% _

LC50: 3117/ 4 hours

[Mouse] _ _ 1.31 4.27 _

88 4-Methoxy

Benzoic Acid _ 184 185 _ _

LD50 = 2200 mg/kg

(oral, mouse) _ _ 1.385 _ _

89 2-Methoxy

Benzoic Acid _ 98-100 _ _ _ LD50 = 300 mg/kg _ _ 1.16 _ _

90 O-Anisic Acid _ 98-100 _ _ _ LD50 = 300 mg/kg _ _ _ _ _



91 3-Hydroxy

Benzoic Acid _ 200-203 _ _ _

LD50 = 2000 mg/kg

(Oral, Mouse) _ _ _ _ _

92 Salicylamide Decomposes 140 _ _ _ LD50: 980 mg/kg

[Rat, Oral] _ _ 1.16 _ _

93 Catechol 245.5 105 127.22 _ _ LD50: 800 mg/kg

[Rabbit, Dermal] _ _ 1.344 3.79 _

94 2,6- Dihydroxy

Benzoic Acid _ 154 _ _ _

LD50 = 600mg/kg

(Mouse) _ _ _ _ _

95 TBAB

(Catalyst) Decomposes 103.5 _ _ _

LD50 = 2143mg/kg

(Rat) _ _ 1 _ _

96

4- Amino

Sulfonyl

Benzoic Acid

_ 285 _ _ _ LD50 = 220mg/kg

(Rat) _ _ _ _ _

97 Phosphorous

Trichloride 76 -112 _ _

0.5

ppm

LD50: 18 mg/kg

[Rat, Oral]; LC50: 50

4 hours [Guinea

pig].

_ _ 1.574 _ _

98

2,4 -

Dihydroxy

Benzoic Acid

_ 208-211 _ _ _ LD50 = 600mg/kg _ _ _ _ _

99 Alfa Naphthol _ 121 _ _ _ LD50 = 500 mg/kg _ _ _ _ _



100 SMBS _ 150 _ _ _ LD50 = 115 mg/kg

(Rat, Oral) _ _ 1.5 _

Punget So2

odor

101

1-Hydroxy 2-

Naphthoic

Acid

_ 195-200 150 _ _ LD50 = 1280mg/kg _ _ _ _ _

102 PoCl3 107.2 1.22 _ _ 0.1ppm

LD50: 380 mg/kg

[Rat, Oral] &

(LC50): 32 ppm 4

hour(s) [Rat]

_ _ 1.675 5.3 _

103

1-Methoxy 2-

Naphthoic

Acid

_ 125-129 _ _ _ LD50 = 2000mg/kg _ _ _ _ _

104

1-Ethoxy 2-

Naphthoic

Acid

_ 50-54 110°c _ _ LD50 = 2100mg/kg _ _ _ _ _

105 4-Cyano

Phenol _ 112.5 _ _ _

LD50: 450 mg/kg

[Mouse, Oral] _ _ _ _ _

106 Nitric Acid 121 -41.6 _ 4ppm LD50 = 430mg/kg

(Rat) _ _ 1.408 2.5 0.29 ppm

107 o-Amino

Phenol _ 172 _ _ _

LD50): 316 mg/kg

[Quail, Oral] _ _ 1.328 _ _

108 Sodium _ 20 _ _ _ LD50: >500 mg/kg _ _ 0.8 - 1.02 _ _



Hydrosulfite [Rat, Oral]

109 3-Amino

Salicylic Acid _ 240 _ _ _

LD50 = 4000mg/kg

(Rat) _ _ _ _ _

110 m-Amino

Phenol 164 122.5 155 _ _

LD50: 401 mg/kg

[Mouse, Oral] _ _ _ _ _

111 4-Amino

salicylic Acid _ 147 _ _ _

Oral, mouse: LD50 =

4 gm/kg _ _ _ _ _

112 p-Amino

Phenol Decomposes 190 _ _ _

LD50: 56.2 mg/kg

[Bird, Oral] & LC50:

5001 1 hours [Rat].

_ _ _ _ _

113 5-Amino

Salicylic Acid _ 283 _ _ _

LD50 = 4gm/kg

(Mice) _ 280 >1.0 _ _

114 Caustic Potash

Flakes 1320 400 _ _ _

LD50 (Oral, rat)=365

mg/kg _ _ 2.044 _ _

115 n-Propanol 97 _ 24 2.1 -

13.5

100

ppm

LD50 = 2000 mg/kg

(Rat, Oral) ; LC50 =

>20 mg/l / 4 hr.

_ _ _ 2.1 _



Occupational health impact on employees, control measures, action plan if accident occur

Sr.

No.

Chemical Occupational health impact on

employees

Control measures provided Action plan if accident occurs

1. Acetic Acid

CAS No. 64-19-7

Chronic respiratory disease due to long

term exposure inhalation

Skin disease due to skin contact

Process enclosure, Local

exhaust, General dilution

ventilation, Personal protective

equipments

Remove victim from the spillage location

into fresh air area.

Small spillage control absorb on paper

towel.

Large spillage – Evacuate area and stop

source of ignition. Dilute with water and

collect washed out water in tank and

neutralize it in safe manner.

2. Acetonitrile

CAS #75-05-8

Potential Acute Health Effects: skin

contact (irritant), of eye contact

(irritant),

Potential Chronic Health Effects: The

substance is toxic to blood, kidneys,

lungs, liver, mucous membranes,

gastrointestinal tract, upper respiratory

tract, skin, eyes, central nervous system

Closed system, ventilation,

explosion-proof electrical

equipment and lighting. Do NOT

use compressed air for filling,

discharging, or handling.

Ventilation. Remove all ignition sources.

Collect leaking liquid in sealable

containers. Absorb remaining liquid in

dry sand or inert absorbent and remove

to safe place. Do NOT wash away into

sewer. Personal protection: complete

protective clothing including self-

contained breathing apparatus



(CNS). The substance may be toxic to

the reproductive system.

3. Liq. Ammonia (25

% Solution)

CAS No. 7664-41-7

Very hazardous in case of skin contact

(corrosive, irritant, permeator),

Inhalation of the spray mist may

produce severe irritation of respiratory

tract, characterized by coughing,

choking, or shortness of breath. Severe

over-exposure can result in death. The

substance is toxic

to upper respiratory tract

Provide exhaust ventilation or

other engineering controls to

keep the airborne

concentrations of vapors below

their respective threshold limit

value. Ensure that eyewash

stations and safety showers are

proximal to the work-station

location.

Dilute with water and mop up, or absorb

with an inert dry material and place in

an appropriate waste disposal container.

If necessary: Neutralize the residue with

a dilute solution of acetic acid.

Corrosive liquid. Poisonous liquid. Stop

leak if without risk. Absorb with DRY

earth, sand or other non-combustible

material.

Do not get water inside container. Do

not touch spilled material. Use water

spray curtain to divert vapor drift. Use

water spray to reduce vapors. Prevent

entry into sewers, basements or

confined areas; dike if needed. Call for

assistance on disposal. Neutralize the

residue with a dilute solution of acetic

acid.



4. Chlorine

CAS #7782-50-5

Toxic by inhalation. Irritating to eyes,

respiratory system and skin.

Very toxic to aquatic organisms.

Use only with adequate

ventilation. Use process

enclosures, local exhaust

ventilation or other engineering

controls to keep worker

exposure to airborne

contaminants below any

recommended or statutory

limits.

Immediately contact emergency

personnel. Keep unnecessary personnel

away. Use suitable protective

equipment. Eliminate all ignition sources

if safe to do so.

Do not touch or walk through spilled

material. Shut off gas supply if this can

be done safely. Isolate area until gas has

dispersed.

5. Dimethyl

formamide (DMF)

CAS #68-12-2

The substance is toxic to kidneys, liver,

central nervous system (CNS). The

substance may be toxic to blood, the

nervous system. Repeated or prolonged

exposure to the substance can produce

target organs damage.



keep the airborne






location.

Flammable liquid. Keep away from heat.

Keep away from sources of ignition. Stop



material. Do not touch spilled material.

Prevent entry into sewers, basements or

confined areas; dike if needed.

6. Ethyl Alcohol

CAS # 64–17-5

The substance is toxic to blood, the

reproductive system, liver, upper

Provide close process Flammable liquid. Keep away from heat.




respiratory tract, skin, central nervous leak if without risk. Absorb with DRY





7. Ethyl Acetate

CAS # 141-78-6



respiratory tract, skin, central nervous








8. Ferric chloride

CAS#: 7705-08-0

The substance is toxic to lungs, mucous

membranes. Repeated or prolonged

exposure to the substance can produce

target organs damage. Repeated

exposure of the eyes to a low level of

dust can produce eye irritation.

Repeated skin exposure can produce

local skin destruction, or dermatitis.

Use process enclosures, local

exhaust ventilation, or other

engineering controls to keep

airborne levels below

recommended exposure limits.

If user operations generate dust,

fume or mist, use ventilation to

keep exposure to airborne

Corrosive solid. Stop leak if without risk.



spray to reduce vapors. Prevent entry

into sewers, basements or confined

areas; dike if needed. Call for assistance

on disposal.

Neutralize the residue with a dilute



Repeated inhalation of dust can

produce varying degree of respiratory

irritation or lung damage.

contaminants below the

exposure limit.

solution of sodium carbonate. Be careful

that the product is not present at a

concentration level above TLV.

9. Formic acid

CAS#: 64-18-6

The substance may be toxic to kidneys,

liver, upper respiratory tract, skin, eyes,

central nervous system (CNS). Repeated

or prolonged exposure to the substance

can produce target organs damage.

Repeated or prolonged contact with

spray mist may produce chronic eye

irritation and severe skin irritation.

Repeated or prolonged exposure to

spray mist may produce respiratory

tract irritation leading to frequent

attacks of bronchial inf



keep the airborne






location.

Combustible material. Corrosive liquid.

Keep away from heat. Keep away from

sources of ignition. Stop leak if without

risk.

Absorb with DRY earth, sand or other

non-combustible material. Do not get

water inside container. Do not touch

spilled material. Use water spray curtain

to divert vapor drift. Prevent entry into

sewers, basements or confined areas;

dike if needed.

Call for assistance on disposal.


solution of sodium carbonate. Be careful

that the product is not present at a

concentration level above TLV

10. Hexane The substance is toxic to blood, the Provide close process Flammable liquid. Keep away from heat.



CAS #110-54-3 reproductive system, liver, upper








11. Hydrochloric Acid Very hazardous in case of skin contact

(corrosive, irritant, permeator), of eye

contact (irritant, corrosive), of

ingestion. Slightly hazardous in case of

inhalation (lung sensitizer). Non-

corrosive for lungs. Liquid or spray mist

may produce tissue damage particularly

on mucous membranes of eyes, mouth

and respiratory tract. Skin contact may

produce burns. Inhalation of the spray

mist may produce severe irritation of

respiratory tract, characterized by

coughing, choking, or shortness of

breath.

Provide close process and

scrubber on process vent and

storage vent




material.



spray curtain to divert vapor drift.



Severe over-exposure can result in

death.

12. Hydrogen peroxide Very hazardous in case of skin contact

(irritant), of eye contact (irritant).

Hazardous in case of skin contact

(corrosive), of eye contact (corrosive),

of ingestion. Slightly hazardous in case

of inhalation (lung sensitizer).

The substance is toxic to lungs, mucous

membranes



keep the airborne






location. Use PPEs.

Explosion

Hazard: Severe, when highly

concentrated or pure H2O2 is exposed to

heat, mechanical impact, or caused to

decompose catalytically by metals &

their

Salts, dusts & alkalies. Another source of

hydrogen peroxide explosions is from

sealing the material in strong containers.

Under such conditions even gradual

decomposition of hydrogen peroxide to

water + 1/2 oxygen

Can cause large pressures to build up in

the containers which may burst

explosively.

Corrosive liquid. Oxidizing material. Stop

leak if without risk. Absorb with dry

earth, sand or other non- combustible



material.

Do not get water inside container. Avoid

contact with a combustible material

(wood, paper, oil, clothing...). Keep

substance damp using water spray. Do


spray curtain to divert vapor drift.


Confined areas; dike if needed.

13. Methanol

CAS# 67-56-1











14. Methylene Chloride

CAS #75-09-2

CARCINOGENIC EFFECTS:

Classified + (Proven.) by OSHA. The

substance is toxic to lungs, the nervous

system, liver, mucous membranes,



keep the airborne


Absorb with an inert material and put

the spilled material in an appropriate

waste disposal. Be careful that the

product is not present at a



central nervous system (CNS). their respective threshold limit



proximal to the workstation

location.

concentration level above TLV.

15. Xylene

CAS#: 106-42-3

The substance is toxic to blood, kidneys,

the nervous system, liver. Repeated or

prolonged exposure to the substance




keep the airborne






location.

Toxic flammable liquid, insoluble or very

slightly soluble in water. Keep away from

heat. Keep away from sources of

ignition.

Stop leak if without risk. Absorb with

DRY earth, sand or other non-

combustible material. Do not get water

inside container.

Do not touch spilled material. Prevent


confined areas; dike if needed. Eliminate

all ignition sources. Call for assistance on

disposal. Be careful that the product

is not present at a concentration level

above TLV.



16. Liq. Ammonia (25

% Solution)

Very hazardous in case of skin contact

(corrosive, irritant, permeator),

Inhalation of the spray mist may

produce severe irritation of respiratory

tract, characterized by coughing,

choking, or shortness of breath. Severe

over-exposure can result in death.

The substance is toxic to upper

respiratory tract



keep the airborne






location.

Dilute with water and mop up, or absorb

with an inert dry material and place in

an appropriate waste disposal container.

If necessary: Neutralize the residue with

a dilute solution of acetic acid.




material.



spray curtain to divert vapor drift. Use

water spray to reduce vapors. Prevent


confined areas; dike if needed. Call for

assistance on disposal.


solution of acetic acid.

17. Nitric acid

CAS#7697-37-2

The substance may be toxic to lungs,

mucous membranes, upper respiratory



Corrosive liquid. Oxidizing material.

Poisonous liquid. Stop leak if without



tract, skin, eyes, teeth. Repeated or

prolonged exposure to the substance


Repeated or prolonged contact with

spray mist may produce chronic eye

irritation and severe skin irritation.

Repeated or prolonged exposure to

spray mist may produce respiratory

tract irritation leading to frequent

attacks of bronchial infection.

keep the airborne






location.

risk. Absorb with DRY earth, sand or

other noncombustible material. Do not

get water inside container. Avoid contact

with a combustible material (wood,

paper, oil, clothing...). Keep substance

damp using water spray. Do not touch

spilled material. Use water spray curtain

to divert vapor drift. Use water spray to

reduce vapors. Prevent entry into

sewers, basements or confined areas;

dike if needed. Call for assistance on

disposal. Neutralize the residue with a

dilute solution of sodium carbonate. Be

careful that the product is not present at

a concentration level above TLV.

18. Oleum

CAS#8014-95-7

May be fatal if absorbed through skin,

swallowed or inhaled.

Causes severe respiratory tract burns.

Causes eye and skin burns. Harmful if

absorbed through skin or if swallowed.



keep the airborne


their respective occupational

Prevent liquid from entering sewers or

waterways. Dike with inert material

(sand, earth, etc.). Collect into

containers for reclamation or disposal

only if container is suitable to withstand



Contains material that can cause target

organ damage.

exposure limits.

Use only with adequate

ventilation.

the material. Consider insitu

neutralization and disposal. Anhydrous

sodium sulfate is useful to treat spills of

oleum. It reacts with the liquid to

contain and solidify the spill and

suppress the fume. Tools and equipment

must be properly decontaminated after

clean up. Comply with Federal,

Provincial/State and local regulations on

reporting releases.

19. Phenol

CAS#: 108-95-2

The substance may be toxic to kidneys,

liver, central nervous system (CNS).

Repeated or prolonged exposure to the

substance can produce target organs

damage. Repeated exposure of the eyes

to a low level of dust can produce eye

irritation. Repeated skin exposure can

produce local skin destruction, or

dermatitis. Repeated inhalation of dust

can produce varying degree of









contaminants

below the exposure limit.

Corrosive solid. Stop leak if without risk.



spray to reduce vapors. Prevent entry

into sewers, basements or confined

areas; dike if needed. Eliminate all

ignition sources. Call for assistance on

disposal. Be careful that the product is

not present at a concentration level

above TLV.



respiratory irritation or lung damage.

Repeated exposure to a highly toxic

material may produce general

deterioration of health by an

accumulation in one or many human

organs.

20. Pyridine

CAS # 110 – 86 - 1

Target organs: Liver, kidneys, nerves,

Bone Marrow. Persons with pre-existing

disorders may be more susceptible. This

Product has beeen reported to be a

possible carcinogen.

Long-term exposure may cause liver,

kidney or CNS damage.

Typical STEL 10 ppm. Typical PEL 15

ppm.

Use process enclosure, local


engineering controls to control



Facilities storing or utilizing this

material should be equipped

with an eyewash facility and a

safety shower. Ventilation fans

and other electrical service must

be non-sparking and have an

explosion-proof design.

Absorb spill with inert material (e.g.

vermiculite, sand or earth), then place in

suitable container. Clean up spills

immediately, observing precautions in

the Protective Equipment section.

Remove all sources of ignition. Use a

spark-proof tool. Provide ventilation.

Prevent spreading of vapors through

sewers, ventilation systems and

confined areas. Evacuate unnecessary

personnel. Approach spill from upwind.

Use water spray to cool and disperse

vapors, protect personnel, and dilute

spills to form nonflammable mixtures.



Control runoff and isolate discharged

material for proper disposal.

21. Sodium Acetate

CAS # 127-09-3

Repeated or prolonged exposure is not

known to aggravate medical condition.









contaminants below the

exposure limit.

Use a shovel to put the material into a

convenient waste disposal container.


solution of acetic acid. Finish cleaning by

spreading water on the contaminated

surface and allow to evacuate through

the sanitary system.

22. Sulfuric Acid Prolonged or repeated skin contact may

cause dermatitis. Prolonged or repeated

inhalation may cause nosebleeds, nasal

congestion, erosion of the teeth,

perforation of the nasal septum, chest

pain and bronchitis. Prolonged or

repeated eye contact may cause

conjunctivitis. Effects may be delayed.

Facilities storing or utilizing this

material should be equipped

with an eyewash facility and a

safety shower. Use adequate

general or local exhaust

ventilation to keep airborne

concentrations below the

permissible exposure limits. Use

Clean up spills immediately, observing

precautions in the Protective Equipment

section. Carefully scoop up and place

into appropriate disposal container.

Provide ventilation. Do not get water

inside containers. Cover with dry earth,

dry sand, or other non-combustible

material followed with plastic sheet to



Workers chronically exposed to sulfuric

acid mists may show various lesions of

the skin, tracheobronchitis, stomatitis,

conjunctivitis, or gastritis.

Occupational exposure to strong

inorganic acid mists containing sulfuric

acid is carcinogenic to humans.

a corrosion-resistant ventilation

system.

minimize spreading and contact with

water.

23. Toluene

CAS # 108-88-3













PRECAUTIONS DURING STORAGE AND TRANSPORTATION OF HAZARDOUS CHEMICALS

o LIQUID FROM

• Always use the road tankers having authorization for transporting the said liquids.

• Vendor will be asked to provide MSDS to Tanker Driver.

• Tankers will have clearly marked identification of material being contained with

mentioning Safety Card.

• Driver to have concerned Safety Officer’s contact details to contact him in case of

emergency.

• Provide muffler on exhaust while entering tanker within premises.

• Ensure Earthing Boss connection before starting any transferring.

• SOP to cover routine checking of Tank farm area to be carried out for checking any

spillage/leakage.

• Tanks will be inspected physically daily for having any visual abnormality.

• Readings of Temperature & Pressure will be noted, recorded & reported immediately for

abnormality.

• Safety instruments like rupture disc, safety valves will be checked at defined duration for

intakeness.

• Scheduled testing of tanks to be done for thickness testing.

• Tanks to be painted on regular interval defined as per laws to protect them from

atmospheric corrosion.

• Barrels to be checked for proper fixing of bungs before sending it outside the premises.

• Barrels to be monitored physically daily for developing any pressure or vacuum within it

on long storage.

• Concerned persons will be trained properly to use spill kit in case of observing any

spillage inside warehouse.

o SOLID FORM

• Vendor will be asked to provide MSDS to Truck Driver.

• Driver to have concerned Safety Officer’s contact details to contact him in case of

emergency.

• Provide muffler on exhaust while entering truck within premises.



• SOP to cover routine checking of Bags & Containers for checking any damage.

• Containers to be tested for safe racking & transportation.

• Proper PPE to be used while handling the material & concerned persons to be trained for

usage of the same.

• Concerned persons will be trained properly to use spill kit in case of observing any

spillage inside warehouse.

The major hazards in the M/s. Val Organic Pvt. Ltd. are described below.

• Toxic hazard due to leakage of hazardous chemicals Bromine, EDC

• Corrosive hazard due to leakage of chemicals like HNO3, HCl, H2SO4 from storage tank or

Carboys.

• Fire hazard due to leakage of hazardous chemicals Toluene, Methanol, Hexane etc.

• Explosive Hazard to leakage of hazardous Gas like Hydrogen

• Electrical hazards due to the electrical major equipment/machinery, operations, welding,

motors, and heavy lift devices, cabling, human intervention (short circuit possibility),

maintenance work (due to machinery breakdown etc.), plant lighting related electrical

hazards.

• Possibility of human injury due to working with mechanical machines, manual handling

etc.

• Possibility of injury during chemicals handled, during operations and due to intoxication.

• Major dropped objects hazard due to large number of physical handling steps/operations

involved with crane/overhead lifting/ hoisting equipment.

• Fires in any part of the plant working areas – there is a possibility of rapid escalation if it

is not brought under control quickly.

• Possibilities of fire hazards at transformers, switchgear and other electrical equipment

etc.



7.1.4.4 TRANSPORTATION, UNLOADIND, HANDLING PROCEDURE AND SAFETY MEASURES

FOR HAZARDOUS CHEMICALS

• Transportation, Unloading and Handling Procedure for Benzene, Toluene, EDC etc.

SR.

NO.

ACTIVITY TYPE OF POSSIBLE

HAZARD

MITIGATION MEASURES

1 Transportation of Solvents like

Toluene, EDC etc. by road

tanker

Leakage& Spillage

• Check the source of leakage point.

• Do not touch damaged containers or spilled material

unless wearing appropriate protective clothing.

• Stop leak if you can do it without risk.

Fire,& explosion • Use water spray to reduce vapors; do not put water

directly on leak, spill area or inside container.

• Keep combustibles (wood, paper, oil, etc.) away from

spilled material.

Toxic release • Isolate the area

• Isolate the container

• Training will be provided to driver and cleaner

regarding the safe driving, hazard of Flammable

chemicals, emergency handling.

• TREM card will kept with TL.

• Fire extinguishers will be kept with TL.

• Flame arrestor will be provided to TL exhaust.

• Instructions will be given not to stop road tanker in

populated area.

• Clear Hazard Identification symbol and emergency

telephone number will be displayed as per HAZCHEM

CODE.

• Appropriate PPEs will be kept with TL.

2 Toluene, EDC Road tanker

unloading at project site.

Leakage& Spillage





Fire,& explosion • Use water spray to reduce vapors; do not put water



spilled material.



Toxic release • Isolate the area


• Check the source of leakage point

• Isolate the area


• Spray the water on leakage

• Priority will be given to tanker to immediately enter the

storage premises at site and will not be kept waiting

near the gate or on the main road.

• Security person will check License, TREM CARD, Fire

extinguisher condition; Antidote Kit, required PPEs as

per SOP laid down.

• Store officer will take sample as per sampling SOP from

sampling point.

• After approval of QC department unloading procedure

will be allowed be started.

Following precautions will be adopted during unloading

• Wheel stopper will be provided to TL at unloading

platform.

• Static earthing will be provided to road tanker.

• Tanker unloading procedure will be followed according

to check list and implemented.

• Flexible SS hose connection will be done at TL outlet

line.

• The quantity remaining in the hose pipeline will be

drained to a small underground storage tank, which will

be subsequently transferred by nitrogen pressure to

the main storage tank thus ensuring complete closed

conditions for transfer from road tanker.

• All TL valves will be closed in TL.

• Finally earthing connection and wheel stopper will be

removed.

• Only day time unloading will be permitted.

3 Toluene, EDC Storage tank

safety

Leakage& Spillage • Check the source of leakage point.






Fire, Explosion • Use water spray to reduce vapors; do not put water



spilled material.

Toxic release. • Isolate the area



• Isolate the area


• Spray the water on leakage

• SS storage tank will be provided as per IS code.

• Dyke wall will be provided to storage tank.

• Level transmitter will be provided with low level high

level auto cut-off provision.

• Vent will be connected to water trap and vent of water

trap will be provided with flame arrestor.

• Water sprinkler system will be provided to storage

tank.

• Fire hydrant monitor with foam attachment facility will

be provided.

• Dumping/Drain vessel/alternate vessel will be provided

to collect dyke wall spillage material.

• FLP type pump will be provided.

• Nitrogen blanketing will be provided to storage tank.

• Double static earthing will be provided to storage tank.

• Double Jumper clip will be provided to all Solvent

handling pipeline flanges.

4 Toluene, Benzene, EDC &

other Solvents transfer from

storage tank to Day tank

Leakage& Spillage due to

Line rupture, Flange

Gasket failure, Fire,

Explosion, Toxic release.

• Double mechanical seal type FLP type pump will be

provided.

• Double on/off switch will provided at tank farm and

process area near day tank. Pump auto cut off with day

tank high level will be provided.

• Flame arrestor will be provided on day tank vent.

• Over flow will be provided for additional safety and it

will be connected to main storage tank.



• NRV will be provided on pump discharge line.

• Double Jumper clip will be provided to all solvent

handling pipeline.

• Double static earthing will be provided to day tank.

5 Toluene, EDC transfer from

Day tank to reactor.

Leakage, Spillage due to

Line rupture, Flange

Gasket failure, Fire,

Explosion, Toxic release.

• Gravity transfer.

• Total quantity of day tank material will be charged in to

reactor at a time.

• NRV will be provided on day tank outlet line.

• Static earthing will be provided to storage tank.

• Double Jumpers will be provided to pipeline flanges.

• Bromine Transportation, Unloading and Handling Procedure

SR.NO. ACTIVITY TYPE OF POSSIBLE

HAZARD

MITIGATION MEASURES

1 Transportation of

Bromine by ISO

container

Leakage, Spillage,

Toxic release

• Leak check with ammonia torch and detect the leak point.

• ELIMINATE all ignition sources (no smoking, flares, sparks or flames

in immediate area).

• Do not touch damaged containers or spilled material unless

wearing appropriate protective clothing.


• Prevent entry into waterways, sewers, basements or confined

areas.

• Absorb or cover with dry earth, sand or other non-combustible

material and transfer to containers.

• Do not get water inside containers.

• GPS will be installed in all the trucks and ISO container vehicle.

• Driver and assistant will be trained in using GPS.

• Open space separated from public highway and public dwellings,

where public does not normally pass. No passengers are allowed.

• The crew shall know how to use fire-fighting appliances.

• The driver or driver's assistant may not open a package containing

bromine.

• Bromine receptacles are not to be checked with open flames.

• No smoking is permitted around the transport unit or in the vicinity

of the vehicle during handling operations.

• The engine is to be shut off during all handling operations unless



required to drive pumps, hoist, etc.

• Parking brakes are to be applied whenever parked.

• If the vehicle is parked on a road at night or with poor visibility,

warning signs are to be placed 10 meters ahead of and behind the

vehicle.

• TREM CARD provided to all transporters and trained for

transportation Emergency of Hazardous chemicals.

• Training will be provided to driver and cleaner regarding the safe

driving, hazard of Bromine emergency handling, use of Self-

contained breathing apparatus (SCBA) sets and neutralizing agent.

• SCBA set will be kept with ISO container truck.

• All the ISO container truck will be equipped with Global Positioning

system (GPS) and route will be predefined.

• Clear Hazard Identification symbol and emergency telephone

number will be displayed as per HAZCHEM CODE.

• Appropriate PPEs will be kept with Truck.

2 Bromine ISO

container loading

and handling at site

Leakage, Spillage,

toxic release



in immediate area).

• Do not touch damaged containers or spilled material unless

wearing appropriate protective clothing.



areas.




• Directly ISO container will be placed at storage area and connected

with process tank.

• Wear recommended personal protective equipment during

connection of ISO container.

• Make sure the absorber unit is working and capable of handling

vented bromine fumes.

• BE SURE THAT DRY AIR (DEW POINT -40"C) OR DRY NITROGEN is

available in ample supply and its pressure is controlled below 3

atm. gauge.

• Check that all the Iso-container valves are closed and blind flanges



are in place.

• Remove the blind flange above the red valve.

• Connect your pressure release line to the red valve outlet. Use a

new rubber gasket (use limit - 24 hours) to ensure tight

connection.

• Open the red valve slowly and then the depressurizing valve, to

release any pressure which might have developed in the Iso-

container.

• Remove the blind flange above the yellow valve.

• Connect your line to the yellow valve outlet. Use a new rubber

gasket (use limit - 24 hours) to ensure tight connection.

• Open the yellow valve and all the valves in your liquid unloading

line.

• Close the depressurizing valve.

• Open the pressurizing valve, at first slowly (to check for bromine

leaks), then fully, to start bromine unloading. Use only enough

pressure to lift the bromine to the high point in the unloading

system.

• NEVER EXCEED 3 ATM. PRESSURE

• When air/nitrogen blows through the unloading line into your

storage tank, the Iso-container is empty.

• Close the pressurizing valve.

• Close the yellow valve and then all the other valves in your liquid

unloading line.

• Slowly open the depressurizing valve to release the air/nitrogen

pressure on the Iso-container to your absorber unit. Wait 5

minutes.

• Close the red valve and then the depressurizing valve.

• Cautiously disconnect your liquid unloading line from the yellow

valve of the Iso-container. Replace its blind flange, tightening all

the bolts. Do not forget to reinstall the proper gasket.

• Disconnect your pressure release line from the red valve of the Iso-

container. Replace its blind flange, tightening all the bolts. Do not

forget to reinstall the proper gasket.

• If there has been a bromine spillage, wash it off the Iso-container

with plenty of water to prevent corrosion. Small bromine spills on

the ground may be neutralized with a clear soda ash or a sodium



thiosulphate solution. Then dispose of in a manner approved by

the local authorities.

• Close the cover dome and pin it securely.

• Mark the Iso-container EMPTY (use erasable means).

• Bromine Iso tanks should be stored no closer than 10 meters from

human or animal consumable articles. Explosives and flammable

materials should not be stored close to bromine.

• There would be sufficient bromine storage tank capacity or an

empty ISO tank to accommodate the transfer of bromine from a

leaking container

• Area where bromine will be used or stored will be enclosed so that

unauthorized persons and animals are prevented from entering the

area. Adequate lighting will be provided to allow sufficient night

surveillance. Surveillance will be provided 24 hours a day.

• Personnel escape routes will be clearly marked and it will be

maintained without any obstructions including adequately sized

doors and windows.

• Facilities like offices, eating, showering and changing rooms, will be

located in up wind direction and remote from the area where

bromine is handled or stored. Provide an adequate supply of clean

water for washing and showers.

• Emergency siren, telephone will be provided in storage area for the

reporting of accidents or emergency situations. The emergency

telephone numbers will be displayed at prominent locations and it

include the fire department, ambulance service, emergency

response team, hospital and police.

• A wind sock will be provided which will clearly visible from all

points on the site and replaced as required. This is required for

indicating wind strength and direction.

• Emergency respirator equipment cabinets (Cupboard) will be

installed not more than 30 meters or ten seconds walking distance

from any location in the storage area.

• Showers and eyewash fountains will be provided, clearly marked,

well lit and with unobstructed access.

• Signs will be posted prominently at the site entrance and

throughout the installation with area maps showing access ways,

hydrant locations, emergency showers, location of emergency



equipment and emergency telephone numbers.

• All management and operating personnel involved in the use or

handling of bromine will undergo safety training, in addition to

specific task training.

• Only experienced well-trained operators will be allowed to receive

and unload bromine receptacles.

• The management will ensure that emergency response plans have

been made and coordinated with the emergency response local

authorities.

• Safety permit for hazardous material loading unloading will be

prepared and implemented.

Fire hydrant system and water sprinkler system installed at tank

farm area.

• Chlorine Transportation, Unloading and handling Procedure:


HAZARD

MITIGATION MEASURES

1 Transportation of

Chlorine Tonners by

road tanker

Leakage, Spillage,

Toxic release



in immediate area).

• Do not touch damaged containers or spilled material unless wearing

appropriate protective clothing.



areas.




• Training will be provided to driver and cleaner regarding the safe

driving, hazard of Chlorine emergency handling, use of SCBA sets.

• TREM card will kept with TL.

• SCBA set will be kept with TL.

• Instructions will be given not to stop Chlorine road truck in

populated area.

• Clear Hazard Identification symbol and emergency telephone



number will be displayed as per HAZCHEM CODE.

• Appropriate PPEs will be kept with TL.

2 Chlorine Tonners

unloading at site

Leakage, Spillage,

toxic release



in immediate area).





areas.




• Priority will be given to Tanker to immediately enter the storage

premises at site and will not be kept waiting near the gate or the

main road.

• Security person will check License, TREM CARD, Fire extinguisher

condition; SCBA set condition, required PPEs as per SOP laid down.

3 Chlorine Tonners

storage shed

Leakage, Spillage,

Toxic release.



in immediate area).





areas.




• SOP will be prepared for safe handling of Chlorine toners.

• Chlorine Emergency Kit will be procured and kept ready at chlorine

shed.

• Chlorine Hood with blower will be provided with scrubbing

arrangement.

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

• Tonner handling EOT crane will be installed in Chlorine shed area



for safe tonner handling.

• Safety Valve will be provided on chlorine header line and it will be

connected to caustic scrubber.

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

• Safety valve will be provided on vaporizer header and outlet of

safety valve connected to scrubber.

• Flow and temperature controllers will be provided on process line.

4 Chlorine Tonners

connected with

header

Leakage, Spillage

due to Line rupture,

Toxic release.



in immediate area).





areas.




• Teflon or copper tube will be used for connection with header.

Pressure gauge and safety valve will be provided on header line.

Storage of Sodium Cyanide:

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

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

authorized person.

Sodium Cyanide Transportation, Unloading and handling Procedure:


HAZARD

MITIGATION MEASURES

1 Transportation of

Sodium Cyanide by

road truck

Leakage, Spillage,

Toxic release in

case of direct

contact or

ingestion

• Close pack HDPE 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

• Separate stored in locked room.

• To adopt close procedure like charging with hopper

hood & blanketing by nitrogen pressure.



contact or

ingestion

• 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.

7.1.5 CONSEQUENCE ANALYSIS

In a plant handling hazardous chemicals, the main hazard arises due to storage, handling &

use of these chemicals. If these chemicals will be released into the atmosphere, they may

cause damage due to resulting fires or vapour clouds. Blast Overpressures depend upon the

reactivity class of material between two explosive limits.

Operating Parameters

Potential vapour release for the same material depends significantly on the operating

conditions. Especially for any liquefied gas, the operating conditions are very critical to

assess the damage potential. If we take up an example of ammonia, if it is stored at ambient

temperature, say 30oC, and then the vapour release potential of the inventory is much

higher as compared to the case if it is stored at 0oC.

Inventory

Inventory Analysis is commonly used in understanding the relative hazards and short listing

of release scenarios. Inventory plays an important role in regard to the potential hazard.

Larger the inventory of a vessel or a system, larger the quantity of potential release. The

potential vapour release (source strength) depends upon the quantity of liquid release, the

properties of the materials and the operating conditions (pressure, temperature). If all these

influencing parameters are combined into a matrix and vapour source strength estimated

for each release case, a ranking should become a credible exercise.



7.1.5.1 DAMAGE CRITERIA

In consequence analysis, use is made of a number of calculation models to estimate the

physical effects of an accident (spill of hazardous material) and to predict the damage

(lethality, injury, material destruction) of the effects. The calculations can roughly be divided

in three major groups:

a) Determination of the source strength parameters;

b) Determination of the consequential effects;

c) Determination of the damage or damage distances.

The basic physical effect models consist of the following.

Source strength parameters

* Calculation of the outflow of liquid, vapour or gas out of a vessel or a pipe, in case of

rupture. Also two-phase outflow can be calculated.

* Calculation, in case of liquid outflow, of the instantaneous flash evaporation and of

the dimensions of the remaining liquid pool.

* Calculation of the evaporation rate, as a function of volatility of the material, pool

dimensions and wind velocity.

* Source strength equals pump capacities, etc. in some cases.

Consequential effects

* Dispersion of gaseous material in the atmosphere as a function of source strength,

relative density of the gas, weather conditions and topographical situation of the

surrounding area.

* Intensity of heat radiation [in kW/ m2] due to a fire or a BLEVE, as a function of the

distance to the source.

* Energy of vapour cloud explosions [in N/m2], as a function of the distance to the

distance of the exploding cloud.

* Concentration of gaseous material in the atmosphere, due to the dispersion of

evaporated chemical. The latter can be either explosive or toxic.

It may be obvious, that the types of models that must be used in a specific risk study

strongly depend upon the type of material involved:

- Gas, vapour, liquid, solid



- Inflammable, explosive, toxic, toxic combustion products

- Stored at high/low temperatures or pressure

- Controlled outflow (pump capacity) or catastrophic failure?

Selection of Damage Criteria

The damage criteria give the relation between extent of the physical effects (exposure) and

the percentage of the people that will be killed or injured due to those effects. The

knowledge about these relations depends strongly on the nature of the exposure. For

instance, much more is known about the damage caused by heat radiation, than about the

damage due to toxic exposure, and for these toxic effects, the knowledge differs strongly

between different materials.

In Consequence Analysis studies, in principle three types of exposure to hazardous effects

are distinguished:

1. Heat radiation, from a jet, pool fire, a flash fire or a BLEVE.

2. Explosion

3. Toxic effects, from toxic materials or toxic combustion products.

In the next three paragraphs, the chosen damage criteria are given and explained.

Heat Radiation

The consequence caused by exposure to heat radiation is a function of:

• The radiation energy onto the human body [kW/m2];

• The exposure duration [sec];

• The protection of the skin tissue (clothed or naked body).

• The limits for 1% of the exposed people to be killed due to heat radiation, and for

second-degree burns are given in the table herein:

Damages to Human Life Due to Heat Radiation

Exposure

Duration

Radiation for

1% lethality

(kW/m2)

Radiation for 2nd

degree burns

(kW/m2)

Radiation for

first degree

burns (kW/m2)



10 Sec 21.2 16 12.5

30 Sec 9.3 7.0 4.0

Since in practical situations, only the own employees will be exposed to heat radiation in

case of a fire, it is reasonable to assume the protection by clothing. It can be assumed that

people would be able to find a cover or a shield against thermal radiation in 10 sec. time.

Furthermore, 100% lethality may be assumed for all people suffering from direct contact

with flames, such as the pool fire, a flash fire or a jet flame. The effects due to relatively

lesser incident radiation intensity are given below.

Effects Due To Incident Radiation Intensity

INCIDENT

RADIATION

kW/m2

TYPE OF DAMAGE

0.7 Equivalent to Solar Radiation

1.6 No discomfort for long exposure

4.0 Sufficient to cause pain within 20 sec. Blistering of skin (first degree burns are likely)

9.5 Pain threshold reached after 8 sec. second degree burns after 20 sec.

12.5 Minimum energy required for piloted ignition of wood, melting plastic tubing etc.

Explosion

In case of vapour cloud explosion, two physical effects may occur:

* a flash fire over the whole length of the explosive gas cloud;

* a blast wave, with typical peak overpressures circular around ignition source.

As explained above, 100% lethality is assumed for all people who are present within the

cloud proper.

For the blast wave, the lethality criterion is based on:

* A peak overpressure of 0.1 bar will cause serious damage to 10% of the

housing/structures.

* Falling fragments will kill one of each eight persons in the destroyed buildings.



The following damage criteria may be distinguished with respect to the peak overpressures

resulting from a blast wave:

Damage Due To Overpressures

Peak Overpressure Damage Type

0.83 bar Total Destruction

0.30 bar Heavy Damage

0.10 bar

0.03 bar

Moderate Damage

Significant Damage

0.01 bar Minor Damage

From this it may be concluded that p = 0.17 E+5 pa corresponds approximately with 1%

lethality. Furthermore it is assumed that everyone inside an area in which the peak

overpressure is greater than 0.17 E+ 5 pa will be wounded by mechanical damage. For the

gas cloud explosion this will be inside a circle with the ignition source as its centre.

Intoxication

The consequences from inhalation of a toxic vapour/gas are determined by the toxic dose.

This dose D is basically determined by:

- Concentration of the vapour in air;

- Exposure duration.

Furthermore, of course, the breathing rates of the victim, as well as the specific toxic

mechanism unto the metabolism play an important role.

The dose is defined as D = Cn.t, with:

C = concentration of the toxic vapour, in [ppm] or [mg/m3];

t = exposure duration, in [sec] or [min];

n = exponent, mostly > 1.0; this exponent takes into account the fact that a high

concentration over a short period results in more serious injury than a low

concentration over a relatively longer period of exposure. The value of n

should be greater than zero but less than 5.



The given definition for D only holds if the concentration is more or less constant over the

exposure time; this may be the case for a (semi) continuous source. In case of an

instantaneous source, the concentration varies with time; the dose D must be calculated

with an integral equation:

D = ∫ Cn.dt

For a number of toxic materials, so-called Vulnerability Models (V.M.) has been developed.

The general equation for a V.M. (probit function) is:

Pr = a + b.ln (Cn.t), with

Pr = probit number, being a representation of the percentage of people suffering

a certain kind of damage, for instance lethality

Pr = 2.67 means 1% of the population;

Pr = 5.00 means 50% of the population;

a and b material dependent numbers;

Cn.t = dose D, as explained above.

The values for a and b are mostly derived from experiments with animals; occasionally,

however, also human toxicity factors have been derived from accidents in past. In case only

animal experiments are available, the inhalation experiments with rats seem to be best

applicable for predicting the damage to people from acute intoxication. Although much

research in this field have been done over the past decades, only for a limited number of

toxic materials consequence models have been developed. Often only quite scarce

information is available to predict the damage from an acute toxic exposition. Data

transformation from oral intoxication data to inhalation toxicity criteria is sometimes

necessary. Generally, in safety evaluations pessimistic assumptions are applied in these

transformation calculations. The calculated damage (distance) may be regarded as a

maximum. For the purposes of a response to a major incident, the IDLH value level has been

chosen for the ‘wounded‘criteria. This type of injury will require medical attention.



7.1.5.2 MAXIMUM CREDIBLE LOSS ACCIDENT SCENARIOS

A Maximum Credible Accident (MCA) can be characterised as the worst credible accident. In

other words: an accident in an activity, resulting in the maximum consequence distance that

is still believed to be possible. A MCA-analysis does not include a quantification of the

probability of occurrence of the accident. Another aspect, in which the pessimistic approach

of MCA studies appears, is the atmospheric condition that is used for dispersion

calculations. As per the reference of the study, weather conditions having an average wind

speed of 2.00 m/s have been chosen.

The Maximum Credible Loss (MCL) scenarios have been developed for the Facility. The MCL

cases considered, attempt to include the worst “Credible” incidents- what constitutes a

credible incident is always subjective. Nevertheless, guidelines have evolved over the years

and based on basic engineering judgement, the cases have been found to be credible and

modelling for assessing vulnerability zones is prepared accordingly. Only catastrophic cases

have been considered and not partial or small failures (as is the case in Quantitative Risk

Assessment where contributions from low frequency - high outcome effect as well as high

frequency - low outcome events are distinguished). The objective of the study is emergency

planning, hence only holistic & conservative assumptions are used for obvious reasons.

Hence though the outcomes may look pessimistic, the planning for emergency concept

should be borne in mind whilst interpreting the results.

7.1.5.2.1 CONSEQUENCE ANALYSIS CALCULATIONS

The Consequence Analysis has been done for selected scenarios. This has been done for

weather conditions having wind speed 2.00 m/s. In Consequence Analysis, geographical

location of the source of potential release plays an important role. Consideration of a large

number of scenarios in the same geographical location serves little purpose if the dominant

scenario has been identified and duly considered.

7.1.5.2.2 SOFTWARE USED FOR CALCULATIONS

PHAST MICRO: Phast is the most comprehensive software available for performing Process

Hazard Analysis (PHA), Quantitative Risk Assessment (QRA) and Financial Risk Analysis (FRA).



Our extensively validated software for consequence and risk assessment is used by

governments and industry helping them to comply with local safety regulation and their

own corporate best practice. Phast contains all the discharge, dispersion, effects and risk

models you will need to accurately assess all your major hazards and associated risks. Phast

Consequence provides you with comprehensive hazard analysis facilities to examine the

progress of a potential incident from the initial release to its far-field effects.

TOXIC AND FLAMMABLE IMPACT

It calculates the initial discharge, as the material expands from its storage conditions to

atmospheric, through dispersion, as the material mixes with air and dilutes, and the

subsequent toxic or flammable effects. Phast includes a wide range of models for discharge

and dispersion as well as flammable, explosive and toxic effects.

DISCHARGE

• Phast requires basic information about storage or process conditions and material

properties in order to perform discharge calculations

• The software comes with an integrated material property database containing more

than 1,600 pre-defined pure component chemicals

• Various discharge scenario options have been implemented to represent common

process failures, and model their behaviour. These include:

� Leaks and line ruptures from long & short pipelines

� Catastrophic ruptures

� Relief valve and disc ruptures

� Tank roof collapse

� Vent from vapour spaces

� In building release effects

DISPERSION

The dispersion models within Phast are able to model the following phenomena

• Dispersion of gas, liquid and two-phase releases

• Liquid droplet thermo dynamics calculations and liquid droplet rainout



• Pool spreading and vaporization

• Building wake dispersion effects for vapour releases

FLAMMABLE EFFECTS

For releases of flammable material Phast calculates

• Radiation profiles and contours from a range of fire scenarios including pool fires,

flash fires, jet fires and fire balls, including cross-wind effects on a jet fire

• Vapour Cloud Explosion modeling using industry standards models including the

TNO Multi-energy, Baker Strehlow Tang and TNT Equivalence models

• Overpressure contours from Boiling Liquid Expanding Vapour Explosions

TOXIC EFFECTS

• Graphs of toxic concentration profile

• Indoor and outdoor toxic dose prediction

• Reporting of distance to specific dose and concentration

• Calculated exposure time and use as “averaging time” for passive dispersion effects

PHAST RISK

Phast Risk allows you to combine the flammable and toxic consequences from each

scenario in your QRA model with their likelihood to quantify the risk of fatalities. Phast Risk

allows you to take account of local population distribution, sources of ignition, land usage

and local prevailing weather conditions. It is designed to perform all the analysis, data

handling and results presentation elements of a QRA within a structured framework.

Phast Risk allows you to quickly identify major risk contributors so that time and efforts can

be directed to mitigating these highest risk activities. Based on effects calculations and

population vulnerabilities, Phast Risk can integrate over all scenarios and weather

conditions to estimate the total risk. The established individual and societal risk indicators

are predicted by Phast Risk across your facility and surrounding area using the classical QRA

methodology. Risk ranking reports can be produced at points of strategic importance to



show the relative influence of the various failure scenarios and their contribution to both

the individual and societal risk metrics.

A key benefit of Phast Risk is the ability to identify major risk contributors and differentiate

these from incidents with worst case consequences which might otherwise dominate the

safety reviews. Whilst medium scale incidents have lesser consequences, they may have a

higher frequency, which, when combined with their hazardous effects, generate a higher

level of risk. Time and effort directed to mitigating high consequence but often low

frequency events may not be well spent. Phast Risk helps you direct this effort more

effectively.

Phast Risk also provides facilities to help you manage large quantities of input data,

including scenarios, parameters, wind roses, ignition and population, and combine these in

many ways. This is critical when looking at sensitivity analyses and assessing the merits of a

range of risk reduction measures.

Benefits

• Facilitates cost reduction in terms of losses and insurance

• Allows optimization of plant and process design

• Assist in compliance with safety regulators

• Enables quicker response to hazardous incidents

• Improve engineer’s understanding of potential hazards

• Regular software upgrades incorporate industry experience and expertise, and

advances in consequence modeling technology

7.1.5.2.3 SCENARIOS

Table 7.4

SCENARIOS

Scenario MCL Scenario

1 Release of Sulphuric Acid



2 Release of Thionyl chloride

3 Release of Hydrochloric Acid

4 Release of Aniline

5 Release of chlorine Cylinder

6 Release of Phenol

7 Release of Toluene

8 Release of MCB

9 Release of Nitric Acid

10 Release of Benzene

11 Release of Hexane

12 Release of MDCB

13 Release of Acetic acid

14 Release of Anhydrous Ammonia

15 Release of DMF

16 Release of IPA

17 Release of Drum Storage Area



1. Sulphuric Acid

Release of Sulphuric Acid

Results indicate:

Spill pool evaporation module for Sulphuric Acid due to Catastrophic Rupture of 20 MT Storage Tank

Input Data

Stored quantity - 20 KL

Molecular weight -98.08

Wind speed – 1.40 m/s

Failure Mode: Catastrophic failure of 4” bottom nozzle and loss of containment

Density ( Air) – 1840 kg/m3

Release rate: 1000 g/s

Results indicate

LC50 – 510 ppm 38.26 meter

IDLH – 3 ppm 528.56 meter

TLV –1 ppm 792.29 meter

Results:-

• LC50 HUMAN (510 ppm) area is up to 38.26 meter,

• IDLH (3 ppm) concentration area is up to 528.56 meter and

• TLV (1 ppm) area is up to 792.29 meter.

Therefore, 528.56 meter area in wind direction is considered as evacuation area.



TOXIC EFFECT (SULPHURIC ACID)



MITIGATION MEASURES FOR SULPHURIC ACID LEAKAGE:

� Isolate the source if possible without risk.

� If leakage is small, dilute with water and mop up, or absorb with an inert dry material and place in an

appropriate waste disposal container. If necessary: Neutralize the residue with a dilute solution of

sodium carbonate.

� Absorb with DRY earth, sand or other non-combustible material.

� Do not get water inside container. Do not touch spilled material. Use water spray curtain to divert

vapor drift.

� Use water spray to reduce vapors.

� Prevent entry into sewers, basements or confined areas.

� Neutralize the residue with a dilute solution of sodium carbonate.

PREVENTIVE MEASURES TO AVOID SULPHURIC ACID LEAKAGE:

� A dyke will be provided to accommodate the full quantity in tank.

� Periodic testing of storage tank will be done by competent person.

� Provide exhaust ventilation or other engineering controls to keep the airborne concentrations of

vapors below their respective TLVs. Storage tank vent is connected to scrubber system.

� Flange guard provided to prevent splash of material.

� Level interlock

� Keep container dry. Never add water to this product.

� In case of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical

advice immediately and show the container or the label.



� Avoid contact with skin and eyes. Keep away from incompatibles such as oxidizing agents, organic

materials, metals, alkalis, moisture.

� Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area.

� While handling always use face shield. Full suit. Vapor respirator. Be sure to use an approved/certified

respirator or equivalent.



2. Release of Thionyl Chloride

This scenario considers release of Thionyl Chloride from Storage Tank:

Results indicate:

Dispersion starts as ground level instantaneous cloud

Dispersion modeled as passive plume/cloud at distance 104.8 m and time 122.9 s

Cloud center has reached the user-specified concentration 0.0001 fraction at distance 1698 m and time

1038 s

Maximum Pool Radius 16.51m

Pool Vapor Flow Rate – 1.633kg/s



3.Release of Hydrochloric Acid

Catastrophic Rupture

Input Data

Stored quantity - 30 MT

Molecular weight - 36.46

Wind speed - 2.31 m/s

Vapor Density (Air=1) – 1.25

Results indicate

LD50 – 900 mg/kg (rabbit)

TLV – 5 ppm

Cloud Footprint:



Maximum Concentration:

Safety measures:

• In case of contact with eyes, immediately flush eyes with plenty of water for at least

15 minutes. Cold water may be used. Get medical attention immediately.

• In case of contact with skin, immediately flush skin with plenty of water for at least

15 minutes. Cover the irritated skin with an emollient. Cold water may be used.

Wash clothing before use. Thoroughly clean shoes before reuse. Get medical

attention immediately.

• Wash with a disinfectant soap and cover the contaminated skin with an anti-

bacterial cream. Get medical attention.

• If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing

is difficult, give oxygen. Get medical attention immediately.

• Evacuate the victim to a safe area as soon as possible.



• If swallowed, do not induce vomiting unless directed to do so by medical personnel.

Never give anything by mouth to an unconscious person. Loosen tight clothing such

as a collar, tie, belt or waistband. Get medical attention immediately.



4. Release of Aniline

This scenario considers release of Aniline from Storage Tank:

Results indicate:

Dispersion starts as ground level instantaneous cloud

Dispersion modeled as passive plume/cloud at distance 124.3 m and time 146.1 s

Cloud center has touched down at distance 0.1144 m and time 0.5 s

Cloud center has reached the user-specified concentration 0.0001 fraction at distance 1857 m and time 1124 s

Pool Vapor flow rate 0.02446 kg/s

Maximum Pool radius 28.86m

chapter - 7 additional studies- risk assessment report

Documents