Qualitative Risk Assessment API RP 581 on CNG Compressor

Ronald Sukianto 13110083Daniel 13110097

Albert Han 13110131

Kompresor CNGP&ID dari sistem SPBG Cibubur, diambil bagian kompresor.

Kompresor (foto)

Part ADetermination of Likelihood Category-Equipment Factor-Damage Factor-Inspection Factor-Condition Factor-Process Factor-Mechanical Design Factor

Equipment factor

0

Sistem yang ditinjau adalah sistem kompresor berjumlah 3 unit (lihat P&ID).

Damage factor

5

0

400021

0010

20

Inspection factor

0

0

00

Condition factor

2

2

26

Process factor

1

1

13

Mechanical Design Factor

2

02

Likehood Category

Likelihood category = 3 (sedang/moderate risk level)

31

3

Part BDetermination of Damage Consequence Category:-Chemical Factor-Quantity Factor-Autoignition Factor-Credit Factor

Gas Alam

Chemical Factor

4

0

25

Quantity Factor

15

6

Autoignition Factor

13

-10

Credit Factor-1-1-1

-1-1

-1-1

-1-1-1-10

Damage Consequence Category

Damage Consequence = B (relatively low consequence).

33

B

Part CHealth Consequence Category:- Toxic Quantity Factor- Dispersibility Factor- Credit Factor- Population Factor

Toxic Quantity Factor

Material released = density * assume leakage time*debit of gas on compressor.

15

-20-5

Dispersibility Factor

1

Credit Factor

There was proper safety equipment based on code and standard.

-1

-1

-5-7

Population Factor

The station was located near the gas station, where approximately 10-100 peoples were having activities there.

7

Health Consequence Category

Health consequence = A (low level consequence).

3

A

Overall Consequence CategoryWe choose the highest between Health and

Damage Consequence.

The consequence factor became B.B

Risk LevelRisk level medium (sedang).