Put Request

Hydraulic shock absorbers are designed for movement restriction of the equipment and pipelines of the first and second loops of nuclear power plants at influence of seismic and emergency dynamic loads on them.

Hydraulic shock absorbers provide normal functioning of NPP equipment at the seismic action up to maximum estimated earthquake force 9 according to MSK-64 scale at the ground level.

Technical characteristics

R-450R-300R-170R-100R-50R-20R-10R-5
Resistance force to equipment and pipelines relocation, to be created by hydraulic shock absorber in seismic loads perception mode, ton-force, not above4503001701005020105
Resistance force to equipment and pipelines relocation, to be created by hydraulic shock absorber in thermal relocation compensation mode, kgf, not above300020001000800500250200200
Total length change of hydraulic shock absorber between pins at the perception of dynamic loads at temperature 100 °С, mm, not above±9,5±6,5±7±6±5±4,5±4±4
Piston stroke of hydraulic shock absorber in the mode of equipment and pipelines thermal relocation compensation, mm0–100
Temperature of equipment and pipelines to which one of the hydraulic shock absorber brackets is attached, °С, not above
330
Temperature of steelworks to which another hydraulic shock absorber bracket is attached at standard operation conditions, °С, not above15–60
Environment temperature in emergency mode, °С, not above150
Volume activity, Bq/kg (Ci/l), not above At standard conditions At large break 7,40×104 (2×10-6), 9,25×1010 (2,5)
Absorbed doze rate, Gy/h (R/h), not above At standard conditions At large break1 (100), 103 (105)
Weight, kg8366694863572331657048

Engineering data for hydraulic shock absorber drawing


R-5R-10R-20R-50R-100R-170R-300R-450
L min665720108093590791011501420
L max9651020138012351207121014501780
a155186260232370400435480
c120146180218235250263285
d303060607090120130
e198240310380420450480525
f44446976100109123125
g7979122146202240295295
h2424505066809090
R38509095120130150160