[TANK] API650 Storage Tank 적용 범위

API650 Storage Tank 적용 범위

 

(1) API 650은 대기압(내압이 roof plate의 weight를 넘지 않는) 근처에서 운전되는 다양한 크기와 용량의 storage tank에 대하여 material, design, fabrication, installation, inspection와 관련한 최소한의 요구 사항을 기술함.

 

(2) Appendix F의 requirement를 만족하면 조금 더 높은 내압을 허용함 (최대 18kpa = 2.5psi)

 

(3) API 650은 Bottom 전체가 균일하게 지지되고 최대 설계온도가 930C(2000F) 이하인 비저온 tank에 적용됨.

 

(4) Appendix M의 requirement를 만족하면 더 높은 온도를 허용함. (최대 2600C(5000F)

 

<API650 Para 1.1.1>

1.1.1 This standard establishes minimum requirements for material, design, fabrication, erection, and inspection for vertical, cylindrical, aboveground, closed- and open-top, welded storage tanks in various sizes and capacities for internal pressures approximating atmospheric pressure (internal pressures not exceeding the weight of the roof plates), but a higher internal pressure is permitted when additional requirements are met (see 1.1.13). This standard applies only to tanks whose entire bottom is uniformly supported and to tanks in non-refrigerated service that have a maximum design temperature of 93 °C (200 °F) or less (see 1.1.20).

 

 

<주요 Appendix 내용>

1)     API 650 : Max Pressure : 0.25 kPa / Max Temperature : 93 ‘C

2)     Annex E : Requirement for seismic loading

3)     Annex F : Max. Internal Pressure (18 kPa = 2.5 psi)

4)     Annex V : Max. Design External Pressure (6.9 kPa = 1 psi)

5)     Annex M : Max. Design Temperature (260’C = 500’F)

 

 

(참고)

-      API 650 : Welded Tanks for Oil Storage

-      API 620 : Large, Welded, Low-Pressure Storage tanks

-      API 625 : Tank Systems for Refrigerated Liquefied Gas Storage

-      API 653 : Tank Inspection, Repair, Alteration and Reconstruction

-      API 2000 : Venting Atmospheric and Low-Pressure Storage tanks