Page 58 - IRSEM_Main Book

Classification Of Accidents
(Ref: Railway Board letter No: 2000/ Safety (A&R)/19/20 dated 13.12.2000).
Sl.
No. Category Class Type
Class D6
Class F (F1 – F4) Averted collisions cases
Indicative
III Class G (G1 – G4) Cases of breach of block rules
accidents
Class H (H1 – H2) Signal passing at danger (SPAD cases)
Class J (J1 – J10) C&W, Loco failures
Equipment Class K (K1 – K7) Engg. department failures
IV
failures Class L (L1– L4) Electric department failures
Class M (M1– M7) S&T department failures
Intentionally damages to Rail, train,
Class N (N1– N3)
stations
Class P (P1 – P3) Human run over cases
Abnormal Natural human death, murder,
V
incidents Class Q (Q1 – Q6) suicide, theft, fire, blasts in railway
area
Cattle run over cases,
Class R (R1– R5)
Other natural incidents

Rail Wear and Tear

Sl.
No. VERTICAL WEAR LATERAL WEAR
1 8 mm for 60 Kg 8 mm for 60 Kg
2 5 mm for 52 Kg & 90 R 6 mm for 52 Kg & 90 R

C
ANGULAR WEAR : MEASURED AT
25º
PROFILE OF 18 mm BELOW RAIL HEAD
NEW RAIL
LATERAL WEAR : TO BE MEASURED
AT THE CENTRE OF THE
L RAIL SECTION
WORN PROFILE
A
VERTICAL WEAR : TO BE MEASURED
AT THE CENTRE OF THE
D RAIL SECTION

B
STOCK RAIL WEAR

Fig No: 4F1

Chapter 3: Duties Of Signal Supervisors And Technical Staff Page 36 of 535