67053- fra assumption register

FRA ASSUMPTION REGISTER

DOC. NO.: 3415001 REV. A Page # 2 of 30

Z:\Dept - HSE\INDONESIA - AKZO NOBEL

Table of Contents Page

1. PROJECT DESCRIPTION ............................................................................................... 4

1.1 Introduction............................................................................................................ 4

1.2 Project Objective ................................................................................................... 4

1.3 TEBODIN Scope of Services ................................................................................ 4

1.4 Areas/Facilities covered under FRA study ........................................................... 5

1.5 Purpose of the Document ..................................................................................... 7

2. PROJECT INFORMATION .............................................................................................. 8

2.1 Project Title ........................................................................................................... 8

2.2 Definitions .............................................................................................................. 8

2.3 Abbreviations ........................................................................................................ 8

3. FRA METHODOLOGY ..................................................................................................... 9

3.1 Hazard Identification ........................................................................................... 10

3.2 Inventory Analysis ............................................................................................... 10

3.3 Consequence Analysis ....................................................................................... 11

3.4 Fire Risk Assessment ......................................................................................... 11

3.5 Escalation Analysis and Assessment Criteria .................................................... 11

3.6 Passive Fire Protection (PFP) ............................................................................ 12

3.7 Active Fire Protection (AFP) ............................................................................... 12

4. FRA ASSUMPTION REGISTER .................................................................................... 13




Sections Revised in this Issue

No. Section Paragraph




1. PROJECT DESCRIPTION

1.1 Introduction

The plant was constructed in 1979 in the East of Jakarta and is a well established site within the

Pulogadung Industrial Estate. It occupies an area of 1.4 HA and is presently surrounded by many factories.

The plant works on 5 days per week and 3 shift per day. It currently produces a capacity of 26 KL per day

with around 78 production employees.

The plant manufactures a full range of solvent based paints and intermediates for Car Refinishes market

under brands: Sickens, Leona, Miluz and Wanda. All the products were classified under 10 supply family:

1. Putty

2. Primer

3. Pearls & Metallics

4. Clearcoats

5. Thinner

6. Hardener

7. Top/Basecoat Bulk

8. Top/Basecoat Color

9. Top/Basecoat White

10. Top/Basecoat Black

1.2 Project Objective

The objective of this Fire Risk Assessment (FRA) study is to assess the potential fire hazards in the facilities.

1.3 TEBODIN Scope of Services

The scope of services consists of the following activities:

1. Site survey and Data collection.

2. Review of collected data and present a list of assumptions in the form of FRA assumption register

which shall be reviewed and approved.




3. Perform the modelling for the identified potential hazards.

4. Draft report will be provided to AKZO NOBEL.

5. Final FRA report will be submitted to AKZO NOBEL.

1.4 Areas/Facilities covered under FRA study

The product was streamlined based on different flow of process:

Production Stream 1: Putty, Primer, Pearls & Metallics

Putty & Primer consist of high powder materials with process flow starting from dispersion at High speed

dissolver, continued to bead-milling (unless 2000 putty was used without milling) and let down followed by

filling and packing. Pearls and metallics are produced by mixing process without milling. After QC

inspection is carried out, it is sent for filling and packing.

Production Stream 2: Thinner, Clear coats and Hardener

Clear coats, Thinner and Hardener are solution products (non-powder products) processed mostly in the

big tank by mixing process where all raw materials are pumped into the tank, unless they are small batches

produced under mobile tank.

Production Stream 3 : Top/Basecoat Bulk, Colour, White and Black.

Top/Basecoat Bulk is an imported toner product either in drums or pails. The product is repacked in small

packs of sizes 1L or 3.75L. Before repacking, stirring is required to make the product homogenous. QC

inspection is carried out before continuing to filling and packing. Top Basecoat Color, White and Black is

dispersion products required high speed dissolver continue to milling process to get a specified particells

size distribution, let down, filling and packing.

The products produced from this site would cater to the local demands as well as to countries in Asia

Pacific region. These would comprise of Made to Stock products (MTS) and Made To Order products

(MTO).

Production of a batch of paints takes place when a batch ticket (order to manufacture) along with the raw

materials pick list is issued by the Production Planning Officer under the Purchasing Planning department.

This batch initially requires all raw materials accurately weighted and prepared. Then, it is followed by a

sequence of activities such as premixing, milling, Let down, color matching, adjustments, quality control

tests and filling into containers.




RAW MATERIALS PREPARATION

Upon receiving a raw materials pick list, the raw materials handler prepares and weighs the required

materials and places them on a wooden pallet. All pigments and powdery materials are prepared and

weighed in a powder weighing booth provided with a dust collector. All solvents are weighed and prepared

at the solvent dispensing area while the additives are prepared at the semi finish weighing area. All along,

the hand pallet lorry and the explosion proof type of forklift truck are used to move the palletized raw

materials and portable tanks containing the products in the production area.

DISPERSION - PREMIXING

All manufacturing recipes would be based on two routes: namely the HSD (High Speed Disperser) - Bead

Mill route wherever secondary dispersion is required or the only HSD / Let down Mixing route otherwise.

There are 4 units of HSD capable of dispersing products in portables tanks with capacities ranging from

500 up to 2,000 L. These units are installed in a closed ventilated room and the room is equipped with a

dust collector. In this stage, solvent, dispersant additive, pigment and resin are slowly added into portables

tanks and are stirred from low to high speed to achieve homogeneity of the products. The dust collector

extracts the dust generated from the loading of pigment and other powdery raw materials.

DISPERSION - BEADMILLING

Once the intermediate from the above premixing stage is QC passed, it is then taken out from the Premix

room to the bead milling area. In this stage the intermediate is run through a bead milling machine for

several passes until the fineness of the product is achieved. In normal run, one pass goes for around 4

hours. The intermediates output from this stage is called mill base. There are 5 units of horizontal bead

milling machines ranging from 5 up to 45 L grinding chambers. The grinding chamber is cooled with a

chilled water of 3°C to reduce the generated heat. The bead milling machines are dedicated to certain

products based on mutual compatibility and to avoid cross contamination.

LET DOWN

Once the mill base is QC passed, it then must right away be processed in the next process stage called Let

Down. The portable tank containing the mill base is transferred to the Letdown area. In here, the mill base

is added with more resin and additives to stabilize the mill base to prevent the pigment from agglomerating

again. It is then mixed well at a low speed to give a homogeneity product. Through color matching,

adjustment and quality control test, the product is QC passed and is now ready to be filled into containers.

A fume extraction unit is installed in all production area to tap off the released vapor.

FILLING

The portable tank containing the product is then transferred to the filling area for filling. From the filling

batch ticket, the required packaging such as empty cans, labels, boxes and lids are prepared by the raw

materials handler and issued to production. During the filling, the product is pumped through a pump filter

set then goes into the hopper of the filling machine. There are 7 filling machines of type manual and semi-

automatic available plus putty press filling machine. Three of them are manual and weight based type

(gravity based). Four of them are of semi-automatic type and volumetric based. The filling machines are




dedicated to certain products to avoid cross contamination. Upon finishing the filling, the packed product is

then the next batch of paints. A portable tank cleaning unit is currently being ordered to eliminate the

manual cleaning transferred to the Distribution Center for delivery to customers. The empty portable tank is

then brought to the tank cleaning area for cleaning prior to be used for the tank. The cleaning solvent is

recycled until several uses then collected in 200L drums as a dirty solvent which later on is sent to the

legalized third party recycler.

Fig 1: Process Flow

1.5 Purpose of the Document

This report presents the register of agreement between AKZO NOBEL and Tebodin on the assumptions

necessary to be made prior to the commencement of “FRA AND HAC ZONING FOR AKZO NOBEL”.

This document lists the assumptions made prior to starting the FRA study. Any further assumptions that are

necessary to be made in order to develop the study will be clearly presented in the study report.




2. PROJECT INFORMATION

2.1 Project Title

The official title of the PROJECT is “FRA AND HAC ZONING FOR AKZO NOBEL”. This title shall be used

on all the deliverables.

2.2 Definitions

COMPANY AKZO NOBEL, INDONESIA

CONSULTANT M/s. Tebodin Consultants and Engineers India Ltd; (TCEI), appointed by the

COMPANY (AKZO NOBEL, INDONESIA) to perform PROJECT.

CONTRACT The contract between COMPANY (AKZO NOBEL) and CONSULTANT (TCEI) for

PROJECT (“FRA AND HAC ZONING FOR AKZO NOBEL”).

PROJECT FRA AND HAC ZONING FOR AKZO NOBEL

SERVICES Services being provided by TEBODIN as per the CONTRACT for the PROJECT

TEBODIN Tebodin Consultants and Engineers India Ltd;

2.3 Abbreviations

AFP Active Fire Protection

API American Petroleum Institute

FRA Fire Risk Assessment

HA Hectares

HAC Hazardous Area Classification

HSD High Speed Disperser

IP Petroleum Institute

MTO Made to Order

MTS Made to Stock

NFPA National Fire Protection Association

OGP Oil & Gas Producers

PFD Process Flow Diagram

PFP Passive Fire Protection

PID Piping and Instrumentation Diagram

QC Quality Control

TCEI Tebodin Consultants and Engineers India

VCE Vapour Cloud Explosion




3. FRA METHODOLOGY

The methodology adopted for this FRA is presented graphically below:

Figure 2: FRA methodology




In summary, the FRA study will involve the following key steps:

� Identification of the hazardous material inventory applicable to the project includes flow rate, pressure,

temperature, composition etc.

� Modelling of physical effects based upon the process conditions of the hazardous material inventories,

and assumptions regarding release hole sizes

� Investigate the effect of flame impingement between equipment.

� Recommend additional requirements for Fire Protection Systems (AFP/PFP).

� The risk contribution that arises from this project will be calculated and this will be compared against

OGP risk acceptance criteria.

3.1 Hazard Identification

Identify the potential hazards related to the fire scenarios. FRA study excludes the analysis of toxic impact

as its purpose is to assess the impact of fire events onto assets.

3.2 Inventory Analysis

The first step in evaluating the FRA is the identification of fuel sources and their location. This includes

information relating to the fuel itself, and the inventories stored or processed, together with the process

conditions. Inventory analysis involves the following:

• Identification of scenarios based on one Process/Storage Unit to another Process/Storage Unit

within the process units.

• Calculation of volume hold-up for different scenarios with respect to gas or liquid within the

equipment.




3.3 Consequence Analysis

The Fire Hazard Information enables the likely fire scenario to be developed based on a consideration of

the events that follow a release of material. For Example, a release of gas that undergoes immediate

ignition will result in jet fire.

This stage of the fire analysis involves determination of the impact of each of the identified hazardous

outcomes from various release events (e.g. gas jet, flashing liquid jet, liquid pool).

The consequence modelling is performed using the latest version of PHAST v 6.7 software. The outcome of

the modelling will be reported in terms of the extent of thermal effects distances.

3.4 Fire Risk Assessment

The FRA study includes:

• Assessment of the credible release from leak hole size.

• Investigate the effect of flame impingement between equipment.

• Recommend additional requirements for Fire Protection Systems (AFP / PFP).

3.5 Escalation Analysis and Assessment Criteria

The potential of escalation is identified based on the fire must have sufficient duration to still impinge onto

the target surface at the time to failure. Consideration is given to the vulnerability of the equipment (for

example the possible presence of a liquid to facilitate heat removal from the system), and the impact of

failure due to fire impingement.

The criteria for determining the potential of escalation are based on the following:

� 35 kW/m2 thermal radiations or jet flame length whichever higher may still impinge on the

equipment.




3.6 Passive Fire Protection (PFP)

The requirement of passive fire protection will be assessed for:

• Vessels

• Pipework between vessels

• Manual valves*

• Vessel and pipework supports.

Note*: All valves used are assumed to be Manual Valves.

3.7 Active Fire Protection (AFP)

The Active Fire Protection has been shown to be effective in a pool fire but uncertainties remain regarding

the degree of protection afforded in a jet fire. Hence, AFP is given credit for pool fire scenarios only.




4. FRA ASSUMPTION REGISTER

The Assumptions are presented in the format of assumption sheets, as follows:

Assumption No. Description

1. FRA Project Scope

2. Atmospheric Conditions

3. Scenarios

4. Process Conditions and Material Composition

5. Release size, Height, Duration and Direction

6. Impact criteria

7. Vulnerability




Project: FRA FOR AKZO NOBEL

Client: AKZO NOBEL

Assumption FRA Project Scope Assumption No. 1

Calculation Run: All Rev.: A Date: 08/10/2013

Assumption/ Rule Set:

Tebodin scope of work is to perform Fire Risk Assessment for the Production Process which covers;

• Diesel Storage

• Production Area which covers:

� Big Tank

� Mobile Tank Area

� Mixing Room

� Raw Material

� Filling Hardener Area

� SFG Storage

� Transfer Area

• Drum Yard

• Warehouse

• Tank Area (Tanks 1 and 2 storing Xylene and Butyl Acetate)

• Color Warehouse

To perform this FRA, Tebodin scope of services consist of following activities;

• Site survey and Data collection.

• Review of collected data and present a list of assumptions in the form of FRA assumption

register which shall be reviewed and approved.

• Perform the modelling for the identified potential hazards.

• Draft report will be provided to AKZO NOBEL.

• Final FRA report will be submitted to AKZO NOBEL.

Exclusions: [Ref 1]

• The battery charger area is not likely to hold up hazardous material. Hence it has not been

included in the hazard study.

• The QC lab will be holding up a minimal amount of hazardous material. Hence it has not

been included in the hazard study.





Client: AKZO NOBEL

Assumption FRA Project Scope Assumption No. 1



• The Tank cleaning area is considered to have minimal amount of hazardous material

capable of causing fire/explosion as it’s not used periodically. Hence it has not been included in the

hazard study.

• The Labelling area is not considered to have very high amount of hazardous material

capable of causing fire/explosion. Hence it has not been included in the hazard study.

• The Packaging Ware House area is considered to have minimal amount of hazardous

material capable of causing fire/explosion. Hence it has not been included in the hazard study.

• Ruang Bonded Ware House is considered to have minimal amount of hazardous material

capable of causing fire/explosion. Hence it has not been included in the hazard study.

Reference: 1. Site Visit Data

TEBODIN – Assumption Initiated by (sign):

TEBODIN – Assumption Verified by (sign):

AKZO NOBEL – Assumption Agreed Upon (sign):

Comments:





Client: AKZO NOBEL

Assumption Atmospheric Condition Assumption No.

2



Ambient Conditions [Ref. 1]

1. Average Ambient Temperature : 28 ºC

2. Average Barometric Pressure : 1 bar

3. Average Relative Humidity : 64 %

4. Solar Radiation : 0.882 kW/m2

The Pasquill Atmospheric Stability Classes

Table 1: Pasquill Stability Class

Stability Class Definition

A Very Unstable

B Unstable

C Slightly Unstable

D Neutral

E Slightly Stable

F Stable

Based on the Table 1, following stability / wind-speed categories shall be used in the study for two weather

conditions representing day and night:

• D Stability, 5 m/s wind speed

• F Stability, 2 m/s wind speed





Client: AKZO NOBEL


2



Table 2: Wind Direction Probability by Wind Speed [Ref 2]

The meteorological data for the Jakarta, Indonesia airport for the years 2001 to 2010 as follows:

(Wind direction coming from) Weather Class / Wind speed Probability

F2 C5 C/D7 D9 TOTAL

N 0.059 0.078 0.024 0.001 0.162

NNE 0.035 0.049 0.023 0.003 0.110

NE 0.012 0.020 0.021 0.005 0.058

ENE 0.010 0.019 0.024 0.004 0.057

E 0.008 0.019 0.027 0.003 0.056

ESE 0.008 0.014 0.016 0.001 0.038

SE 0.008 0.009 0.004 0.000 0.021

SSE 0.014 0.019 0.007 0.000 0.040

S 0.021 0.028 0.009 0.001 0.059

SSW 0.021 0.028 0.015 0.002 0.066

SW 0.021 0.029 0.021 0.003 0.073

WSW 0.017 0.018 0.012 0.001 0.047

W 0.013 0.007 0.003 0.000 0.022

WNW 0.018 0.013 0.005 0.000 0.035

NW 0.023 0.020 0.007 0.000 0.049

NNW 0.041 0.049 0.015 0.001 0.105

Total 0.326 0.416 0.232 0.025 1.000

Surface Roughness

The ground characteristics are represented by surface roughness which will be assumed as 0.1m (10cm) –

Low crops, occasional large obstacles.





Client: AKZO NOBEL


2



Reference: 1. Atmospheric measurement Data provided by Client

2. Typical Weather Data for Jakarta from Internet (www.solarshine.com)




Comments:





Client: AKZO NOBEL

Assumption Scenarios Assumption No. 3



Scenario:

Basis for Scenario: Each possible different section is considered to hold hazardous material capable of

causing fire/explosion, at one possible time, within the plant facility.

The following table represents the Scenarios that were considered for this study;

Table 3: Scenarios :

Scenario Number Description

1 Loss of containment from Diesel Storage Tank

2 Loss of containment from Drums in Raw material

storage area

3 Loss of containment from Big Tank

4 Loss of containment from Drums/Tanks Mobile

Tank area

5 Loss of containment from Drums in Mixing Room

6 Loss of containment from Drums in SFG Storage

7 Loss of containment from Drums in Cold Room

8 Loss of containment from Drums in Transfer

Area

9 Loss of containment from Drums in Filling

Hardener Area

10 Loss of containment from Drums in Color

WareHouse





Client: AKZO NOBEL

Assumption Scenarios Assumption No. 3



11 Loss of containment from Drums in Drum Yard

12 Loss of containment from Drums Outside Drum

Yard

13 Loss of containment from Tank in Tank Area

14 Loss of containment from Drums/cans in

WareHouse

Reference:




Comments:





Client: AKZO NOBEL

Assumption Process Condition & Material Composition Assumption No. 4



Table 4: Process and Operating Conditions:

The following table represents the Process and Operating conditions for this study:

Scenario Description Phase Material Composition* Quantity (liters)

Operating Pressure

(barg)

Operating Temp.

(oC)

1 Loss of containment from

Diesel Storage Tank Liquid Diesel N-Undecane 2000 Amb Amb


Drums in Raw material

storage area1

Liquid SETALUX 1160 XS -

51

Xylene: 70% Ethyl Benzene: 16% n-butyl acetate: 14%

2000 Amb Amb


Big Tank 2

Liquid Dianal DG 4040 Toluene: 60 %

n-Butanol: 40 % 3050 Amb Amb



C:\Users\62016029\Desktop\FRA Assumption Register - Revised.Docx


Client: AKZO NOBEL





Drums/Tanks Mobile Tank

area3

Liquid, Resin

Exxsol DSP 80/100

n-hexane: (15-20)% Heptane & isomers: (32-

36)% Cyclohexane: (25-27)%

Methylcyclohexane: (3-7)%

2000 Amb Amb


Drums in Mixing Room 4

Liquid EXXSOL DSP 80/100




500 Amb Amb


Drums in SFG Storage5

Liquid Exxsol D30

n hexane: 25% xylene:25%

toluene: 15% cyclohexane:15%

pentane:15% heptane:5%

10000 Amb Amb


Drums in Cold Room 6

Liquid EXXSOL DSP 80/100



700 - -





Client: AKZO NOBEL






Drums in Transfer Area 7


51


2500 Amb Amb


Drums in Filling Hardener

Area8


51


2500 Amb Amb


Drums in Color WareHouse 9


51


1700 Amb Amb


Drums in Drum Yard 10

Liquid Exxsol D30




5200 Amb Amb


Drums Outside Drum Yard 11

Liquid Butanol Normal n-butanol 825 Amb Amb





Client: AKZO NOBEL





Tank in Tank Area Liquid n-Butyl Acetate n - Butyl Acetate 1200 Amb Amb


Drums/cans in WareHouse 12

Liquid Exxsol D30




800 Amb Amb

Note:

• * - Composition taken up such that it is accepted by DNV’s PHAST 6.7 software used for modelling.

1. Raw material storage is assumed to have Talc & Resin to a total quantity of 398.4 (498 <pallets>*4<drums>*200kg<weightage of each drum>) tonnes. Since it

may have substances ranging in different flashpoints, we assume that it may have a total number of 55 different resins & 120 different Talc of equal Quantity i.e.,

2.34 tonnes of each material roughly.

2. Big Tank Area consists of 12 Tanks. Each tank’s processing capacity is given as 3000kg. Dianal DG 4040 is considered for this area.

3. Mobile Tank Area is assumed to have minimal processing capacity. Assuming it has processing capacity of 25 drums with each drum weightage of 200 kg, the

quantity of hazardous material present is 5000 kg. Since it may have resins and solvents, we consider Exxsol DSP 80/100 to be at 2000 l for this study.





Client: AKZO NOBEL




4. Mixing Room has pigment, dispersant, additive & solvent. Assuming the maximum capacity of 2000 l, EXXSOL DSP 80/100 with a flashpoint of -15 °C is assumed

to have 500 l at one possible time.

5. SFG storage area is assumed to have solvents to a total quantity of 412.8 (516 <pallets>*4<drums>*200kg<weightage of each drum>) tonnes. Since it may have

solvents ranging in different flashpoints, we assume it to have a total of 50 different solvents of equal Quantity i.e., 8 tonnes of each material roughly.

6. EXXSOL DSP 80/100 with a flash point of – 15 °C is considered for this area. Cold Room is assumed to store substances with flashpoints ranging from – 15 to 10

°C. Assuming it has 11 different substances, the volume of EXXSOL DSP 80/100 is taken as 700 l.

7. Assuming Big Tank’s final outlet i.e., 3 tonnes of product is being sent to Transfer Area at one possible time. Hence, Transfer Area’s capacity at one possible time

is assumed to be 3 tonnes. Assuming the product to flash point above 10 °C, SETALUX 1160 XS – 51 or a material having a similar flash point is assumed for this

study.

8. Filling Hardener Area is assumed to have 3 tonnes of capacity at one possible time.

9. Colour Ware House is assumed to have 5 different products. The total capacity is 50 drums with each drum having a capacity of 200 kg, at one possible time.

10. Drum Yard is assumed to have solvents with a total quantity of 202.4 (253 <pallets>*4<drums>*200kg<weightage of each drum>) tonnes. Since it may have

solvents ranging in different flashpoints, we assume it to have a total of 50 different solvents of equal Quantity i.e., 4 tonnes of each material roughly.

11. Outside Drum Yard facility that extends upto area outside Packaging Warehouse, Ruang Bonded Warehouse & Loading area is assumed to have solvents to a

total quantity of 33 ([112+32+32] <pallets>) tonnes. Since it may have solvents ranging in different flashpoints, we assume it to have a total of 50 different solvents





Client: AKZO NOBEL




of equal Quantity i.e., 660 kg of each material roughly. Butanol Normal is assumed for this study.

12. Ware House is assumed to have a total of 25 different products of equal quantity stored in 20 litres can/drum. Ware House is assumed to have storage capacity of

1000 numbers at one possible time.

Reference: 1. Data provided by Client.




Comments:





Client: AKZO NOBEL








Client: AKZO NOBEL

Assumption Release Size, Height, Duration & Direction Assumption No. 5



Release Size

The Following Leak Sizes are to be considered for this FRA study:[Ref 1]

• 10 mm

• 25 mm

• 50 mm

Since most of the storage is in Drums, leak sizes 25mm and above are the most suitable for this study.

Release height

The release height shall be assumed as 1 m.

Release Duration

The release duration shall be assumed as 30 minutes (1800 Seconds) or inventory depletion whichever is earlier.

Release Direction

The release direction is assumed as Horizontal.

Reference:

1. OGP Risk Assessment Data Directory, Report No. 434 – 1.




Comments:





Client: AKZO NOBEL

Assumption Impact Criteria Assumption No. 6



The following impact criteria shall be used for this FRA study:

Table 5: Impact Criteria [Ref 1]

Accident Hazards Criteria Unit Assessment

Thermal Flux

6 kW/m2

Impairment of escape routes

12.5 kW/m2

Extreme pain within 20s; movement to shelter is instinctive; fatality if escape is not possible.

Outdoors/offshore: 70% lethality Indoors onshore: 30% lethality*

20 kW/m2

20 Incapacitation, leading to fatality unless rescue is done quickly.

35 kW/m2

Immediate fatality (100% lethality)

Reference: 1. OGP Risk Assessment Data Directory Report No: 434 – 14.1




Comments:





Client: AKZO NOBEL

Assumption Vulnerability Assumption No. 7



The following Table represents the Indoor / Outdoor vulnerabilities for this FRA Study:

Table 6: Indoor / Outdoor Vulnerabilities

Scenario Indoor Vulnerability Outdoor Vulnerability

Flash Fire (inside flame envelope) 0.2 0.7

Jet Fire, Pool Fire (≥ 35 kW/m2) 0.2 0.7

Reference:




Comments:

67053- fra assumption register

Documents

fra study

fra methodology

project description

dept hseindonesia

project objective

project information

project title

akzo nobel sections