PSI - Issue 41

Hryhoriy Nykyforchyn et al. / Procedia Structural Integrity 41 (2022) 326–332 Hryhoriy Nykyforchyn, Vitaliy Pustovyi, Olha Zvirko et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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2. Peculiarities of the technical state diagnostics of the excessively operated hoisting and transporting facilities based on the resistance of the steel to brittle fracture Operational decrease in the resistance to brittle fracture of steels has been analysed for several types of excessively operated port equipment based on the impact testing of Charpy specimens cut out in the transverse direction to rolling (Table 1). Their average service time is around 40 years though their normative lifetime lies within the range of 12 – 20 years.

Table 1. Impact toughness KCV of the tested units of seaport handling equipment

Service time  op [years]

Normative lifetime   normative [years]

KCV e [J/cm

2 ]

Steel

Crane unit

No. Crane

Boom

37 28 48 50 39 31 56 30 69 51 31 79 14 43

1

Albrecht

38

12

Movable counterweight *

St38-b2

Jib

Boom

2

Albrecht

43

12

Movable counterweight

107

St38-b2

Jib

Boom

3

Albrecht

45

12

St38-b2

Movable counterweight

Boom *

Albrecht

56

12

4

St38-b2

Movable counterweight Counterweight linkage

Albrecht

56

12

5

St38-b2

Boom Boom

Albrecht

56

12

6

St38-b2

Movable counterweight ** Counterweight linkage

7 8 9

Ganz Sokol Sokol

39 39 36

12 12 12

Boom

126

ВSt3sp St38-b2 St38-b2

Boom ** Boom *

20 24

Boom

118 152

Movable counterweight

10

Sokol

32

12

St38-b2

Jib

77 49

Column wall Column shelf

131 210

Pylon

11

Krupp

31

12

Bridge *

72 86

St37

Head beam of upper frame

12

Kone

20

12

Fe52 D

Sea console * Sea console 1 * Sea console 2 *

105 100

St3sp

13

Grab loader

41

12

66

Steel 10 17H1S 09H2S

Bridge *

116 118

14 15 16

Shiploader

44

20

Boom Boom Discs

Stacker

44 13

58 92

20 20

Railcar dumper

14H2

Notes: * essential fatigue damage revealed ** fractured