[S&T Heat Exchanger] Full Diameter Tubesheet에 대한 API 660 요구사항

Full Diameter Tubesheet을 적용해야 하는 Case (API 660 요구사항)

 

 

API 660 Para 7.5.2.4에 따르면 Removable Tube bundle type with Bonnet 일 경우에는 Full Diameter Tubesheet 무조건 적용해야 합니다.

또한 Full Diameter Tubesheet의 경우 Collar bolt를 공급하기 때문에 Test Ring은 따로 공급할 필요가 없습니다.

 

Full Diameter Tubesheet가 설치된 열교환기

 

1. (API 660) Para 7.5.2.4

A full diameter stationary tubesheet shall be provided for removable tube bundle exchangers with bonnets (see TEMA, Figure N-1.2, Type B stationary head). The tubesheet shall be provided with collar studs or tapped tubesheet holes for a minimum of 25 % of the bolts (4 minimum). The tubesheet design shall allow for hydrostatic testing of the shell side with the bonnet removed and all bolting installed.