In the realm of railway maintenance and safety, the intricacies of ensuring a safe work environment cannot be overstated. Among the myriad of procedures and documentation required, the Line Blockage form plays a pivotal role, acting as both a logistical and safety blueprint for workers and signallers alike. Initially introduced in June 2006, the form, designated as RT3181, underwent significant development, leading to its withdrawal in December 2010 to be replaced by a more comprehensive version. Its primary purpose is to document the temporary cessation of rail traffic in specific sections for maintenance or emergency work. The form categorizes blockages into types like T12, T2A, T2D, T2H, T2T, and T2X, each specifying different scenarios and requirements such as the involvement of level crossings, stabled trains, or particular signaller-only operations. Additionally, it meticulously records the necessary details ranging from the identity of the person in charge (IWA/COSS/PC) to the exact location and duration of the blockage. Appendices attached to the form further detail procedures for sharing blockages among multiple workers, changes in personnel, and specific conditions at level crossings or with stabled trains. This documentation is critical in maintaining the delicate balance between operational efficiency and safety, providing a structured approach to managing the many variables involved in line blockage scenarios.
| Question | Answer |
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| Form Name | Line Blockage Form |
| Form Length | 2 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 30 sec |
| Other names | form t12, what is t12 in real estate, t 12 form, t12 tax form |
Uncontrolled When Printed
Document to be withdrawn as of 04/12/2010
To be superseded by Form RT3181
Line Blockage Form (T12/T2)
RT3181 June 2006: page 1
Section |
1 |
General arrangements
WON/GZAC No.
(if applicable)
Name of
IWA/COSS/PC
Phone Number
Employer
Circle the type |
T12 |
T2A |
T2D |
T2H |
T2T |
T2X |
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of line blockage |
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Circle your role |
IWA |
COSS |
PC |
signaller |
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Name of signaller
Panel/workstation
Signalbox
Phone Number
Time needed |
hrs |
mins |
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for the work |
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Line to be blocked
Between (signal/points)
And (signal/points)
Protecting signal(s)
If a T2 is being taken, go to page 2 and complete -
Appendix
A
if the T2 includes any level crossings
Appendix
B
if protection has been placed on a stabled train
Appendix
C
if a T2A (signaller only), T2D or T2T is being taken
Section
2
Authority number
1
Authority number
Blockage taken at
Time |
Date |
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Call back time
Blockage given up at
Time |
Date |
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Rows
2
3
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5
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9
10
Go to page 2 and complete -
Appendix if a T2 is to be shared by two or more
DCOSSs (PC only)
Appendix
E
if there is a change of COSS/PC in a T2
Appendix
F
if there is a change of signaller (signaller only)
Uncontrolled When Printed
Document to be withdrawn as of 04/12/2010
To be superseded by Form RT3181
Line Blockage Form (Appendices)
RT3181 June 2006: page 2
AppendiA x Level crossing arrangements
Level crossing |
Supervising signal box |
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Method |
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A |
Q |
E |
N |
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In the method column, circle -
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if an attendant is required |
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if an attendant is required some |
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throughout the T2 (at AHBC, |
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of the time (at AHBC, CCTV or |
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CCTV or RC crossings) |
RC crossings) |
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if the signals/siren/bells are |
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if there is normal working at the |
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switched off (at ABCL or AOCL |
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crossing |
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crossings) |
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AppendiB x Trains stabled on platform lines
Protection placed on trains stabled on these platform lines
AppendiC x T2A, T2D or T2T
T2A (signaller only)
These track circuits are occupied by TCODs
T2D
Name of signalling technician
Disconnected signalling equipment
T2T
Time token |
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Time token |
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issued |
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returned |
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Appendix
D
Permission to share the T2 (PC only)
Name of COSS
Phone number
Employer
Authority given at
Time |
Date |
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Work completed at
Time |
Date |
Appendix
E
Change of COSS/PC
Name of new COSS/PC
Phone number
Employer
Time
Date
Appendix
F
Change of signaller (signaller only) (if required by signal box instructions)
Name of new signaller
Time
Date
Name of new signaller
Time
Date