API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

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RISK-BASED INSPECTION METHODOLOGY, PART 3—CONSEQUENCE OF FAILURE METHODOLOGY 3-65Table 4.14—Toxic Impact Criteria for Toxic ChemicalsToxic ComponentProbit ParametersA B NIDLH(ppm)AEGL3-10(ppm)AEGL3-30(ppm)AEGL3-60(ppm)EPA ToxicEndpoint(mg/L)ERPG-3Acrolein −9.93 2.05 1.00 2 — — — 0.50 —Acrylonitrile −29.42 3.01 1.43 85 — — — 0.08 75Aluminum trichloride −14.65 2.00 1.00 — — — — — —Ammonia −35.90 1.85 2.00 10 — — — 0.14 750Benzene −109.8 5.30 2.00 500 — — — 1,000Bromine −9.04 0.92 2.00 3 — — — 0.01 5Carbon monoxide −37.98 3.70 1.00 1,200 1,700 600 330 — 500Carbon tetrachloride −6.29 0.41 2.50 200 — — — — 750Chlorine −8.29 0.92 2.00 10 — 28 20 0.01 20Ethylene glycolmonoethyl ether−15.54 1.00 2.00 — — — — — —Ethylene oxide −6.21 1.00 1.00 800 — — — — —Formaldehyde −12.24 1.30 2.00 20 — — — 0.01 25Hydrogen chloride −16.85 2.00 1.00 50 620 210 100 0.03 150Hydrogen cyanide −29.42 3.01 1.43 50 27 21 15 — 25Hydrogen fluoride −48.33 4.853 1.00 30 170 62 44 —Hydrogen sulfide −31.42 3.01 1.43 100 76 60 50 — 100Methanol — — — — 15,000 15,000 7,900 —Methyl bromide −56.81 5.27 1.00 — — — — — 200Methyl isocyanate −5.64 1.64 0.65 — — — — — —Nitric acid −5.48 1.00 2.00 — — — — — —Nitrogen dioxide −13.79 1.40 2.00 20 — — — — —Phosgene −19.27 3.69 1.00 2 3.6 1.5 0.75 — —Propylene oxide −7.415 0.509 2.00 400 — — — 0.59 750Styrene — — — 700 — — — — 1,000Sulphur dioxide −15.67 2.10 1.00 100 — — — — —Toluene −6.79 0.41 2.50 500 1,600 900 630 — —Toluenediisocyanate−4.49 1.00 2.00 — — — — — —NOTE Shaded areas in the above table designate toxic fluids and toxic impact criteria modeled in the Level 1 consequence analysisdescribed in Section 4.9. In the Level 2 consequence analysis, all data can be considered for all other fluids and toxic impact criteria.

3-66 API RECOMMENDED PRACTICE 581Table 4.15—Example Component Damage CostsEquipmentTypeComponentTypeDamage Cost (2001 U.S. Dollars), holecostSmall Medium Large RuptureCompressor COMPC 10,000 20,000 100,000 300,000COMPR 5,000 10,000 50,000 100,000Heat exchangerHEXSS,HEXTS,HEXTUBE1,000 2,000 20,000 60,000Pipe PIPE-1 5 0 0 20PIPE-2 5 0 0 40PIPE-4 5 10 0 60PIPE-6 5 20 0 120PIPE-8 5 30 60 180PIPE-10 5 40 80 240PIPE-12 5 60 120 360PIPE-16 5 80 160 500PIPEGT16 10 120 240 700PumpPUMP2S,PUMP1S1,000 2,500 5,000 5,000PUMPR 1,000 2,500 5,000 10,000Tank TANKBOTTOM 5,000 0 0 120,000COURSES-10 5,000 12,000 20,000 40,000FINFAN FINFAN_TUBE 1,000 2,000 20,000 60,000VesselFINFANHEADERKODRUM,DRUM1,000 2,000 20,000 60,0005,000 12,000 20,000 40,000FILTER 1,000 2,000 4,000 10,000REACTOR 10,000 24,000 40,000 80,000COLTOP,COLMID,COLBTM10,000 25,000 50,000 100,000

3-66 API RECOMMENDED PRACTICE 581

Table 4.15—Example Component Damage Costs

Equipment

Type

Component

Type

Damage Cost (2001 U.S. Dollars), holecost

Small Medium Large Rupture

Compressor COMPC 10,000 20,000 100,000 300,000

COMPR 5,000 10,000 50,000 100,000

Heat exchanger

HEXSS,

HEXTS,

HEXTUBE

1,000 2,000 20,000 60,000

Pipe PIPE-1 5 0 0 20

PIPE-2 5 0 0 40

PIPE-4 5 10 0 60

PIPE-6 5 20 0 120

PIPE-8 5 30 60 180

PIPE-10 5 40 80 240

PIPE-12 5 60 120 360

PIPE-16 5 80 160 500

PIPEGT16 10 120 240 700

Pump

PUMP2S,

PUMP1S

1,000 2,500 5,000 5,000

PUMPR 1,000 2,500 5,000 10,000

Tank TANKBOTTOM 5,000 0 0 120,000

COURSES-10 5,000 12,000 20,000 40,000

FINFAN FINFAN_TUBE 1,000 2,000 20,000 60,000

Vessel

FINFAN

HEADER

KODRUM,

DRUM

1,000 2,000 20,000 60,000

5,000 12,000 20,000 40,000

FILTER 1,000 2,000 4,000 10,000

REACTOR 10,000 24,000 40,000 80,000

COLTOP,

COLMID,

COLBTM

10,000 25,000 50,000 100,000

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