Research and Analysis on Assembly Methodology for the Fusion Blanket System

Table 2

Advantages and disadvantages of PPHM and DFA assembly methods.

	PPHM	DFA
Advantages	High frock efficiency	Less number of parts
	Easy to be connected	Less tooling steps
	Easy to position	Less number of welds
	Easy to weld	Less number of fixtures
		Easy to be connected
Disadvantages	More number of parts	Low frock efficiency
		Hard to position
	More tooling steps	Hard to weld
	More number of fixtures	Complex tooling of fixtures
		Need more auxiliary tools