SAN JOAQUIN VALLEY UNIFIED AIR POLLUTION CONTROL DISTRICT

RULE 4451 - VALVES, PRESSURE RELIEF VALVES, FLANGES, THREADED CONNECTIONS AND PROCESS DRAINS AT PETROLEUM REFINERIES AND CHEMICAL PLANTS
(Adopted April 11, 1991, Amended December 17, 1992)

1.0 Purpose

The purpose of this rule is to limit leaks from valves, flanges, threaded connections and process drains that may result in fugitive emissions of VOC at petroleum refineries and chemical plants. Inspection, repair and maintenance schedules, recordkeeping and administrative requirements, and test methods are specified.

2.0 Applicability

This rule applies to all valves, pressure relief valves, flanges, threaded connections and process drains at petroleum refineries and chemical plants that may be the source of fugitive VOC emissions.

3.0. Definitions

4.0 Exemptions

5.0 Requirements

6.0 Administrative Requirements

Table 1

TEMPERATURE VERSUS VAPOR PRESSURE

ORGANIC LIQUID

Reference Properties

Maximum Temp F

Not to Exceed

Gravity

API

IBP

F

0.5 (psia)

1.5 (psia)

Middle Distillates

 

 

 

 

Kerosene

42.5

350

195

250

Diesel

36.4

372

230

290

Gas Oil

26.2

390

249

310

Stove Oil

23

421

275

340

Jet Fuels

 

 

 

 

JP-1

43.1

330

165

230

JP-3

54.7

110

---

25

JP-4

51.5

150

20

68

JP-5

39.6

355

205

260

JP-7

44-50

360

205

260

Fuel Oil

 

 

 

 

No. 1

42.5

350

195

250

No. 2

36.4

372

230

290

No. 3

26.2

390

249

310

No. 4

23

421

275

340

No. 5

19.9

560

380

465

Residual

19.27

---

405

---

No. 6

16.2

625

450

---

Asphalts

 

 

 

 

60-100 pen.

---

---

490

550

120-150 pen.

---

---

450

500

200-300 pen.

---

---

360

420

IBP = Initial Boiling Point