WORKING OF TRAIN IN ELECTRIFIED SECTION (SR-17.04-1)
POWER BLOCK – means blocking of electrified section by disconnecting supply of electric in that section. The operation of electric engine only is blocked or restricted.
TRAFFIC BLOCK:- means blocking the section both for electric operated and diesel operated engine. Power block has been divided into three categories.
1. Pre-planned power block
2. Emergency power block
a. All department in the electrified section who require traffic blocks, power blocks or permits to work in the danger zone of traction equipment, or who require overhead line and /or bonding staff to present at site for scheduled maintenance works shall deliver at the office of the Divisional Electrical Engineer (traction distribution) not later than 10 hours on every Monday morning.
b. The requirements of all departments will be co-ordinate in the office of the Divisional Electrical Engineer (traction distribution) and a consolidated statements is forwarded to the Divisional Operating Manager concerned, by 12 hours on every Wednesday for inclusion in the weekly program of traffic and power block.
c. Works of an urgent character shall be attended to by obtaining emergency blocks and permits to work from the Traction Power Controller (TPC).
d. A weekly program of work involving traffic blocks, power blocks and permits to work shall be prepared in the office of the DOM and dispatched to all concerned by Friday evening, for the work commencing on the following Monday.
e. When power block has been sanctioned, TPC shall issue to the Section Controller a power block message (in prescribed form) in duplicate either through messenger or by telephone with exchange of private number. The Section Controller shall get confirmation from the SM or cabin ASM or switch man that the section will be blocked for electric traffic.
f. On completion of the work, the person who received the permits to work shall ensure that all men and material have been withdrawn from the electrical equipments and its vicinity. He shall remove the earth, and inform the TPC either by written memo or by a phone message supported by private number, that the work for which the permit to work was issued has been completed, men and material have been withdrawn from the specified electrical equipment and the same may be made alive. Such procedure shall be constituted for cancellation of the permits to work.
g. All details related to power block shall be entered in train signal register/SM’S diary and power block register.
h. During power /traffic block “No Voltage” ledger collar /button shall be used by the SM and No Voltage collar shall be used on the related block instruments.
i. On completion of the work after receiving the message from the TPC the section controller shall advise the SM to cancel the power block.
WORKING OF TOWER WAGON (GR-17.08, SR-17.08-1)
1. Whenever it is necessary to work a tower wagon either for maintenance of OHE or attending the site of break down or for any other reason, the person in charge of tower wagon shall advise the station master/cabin ASM/Switch man about the movement of tower wagon.
2. A tower wagon is to be treated like a train and shall be worked without a guard. The duties and responsibility for protecting the train/track and other duties of the Guard shall devolve on the OHE supervisor accompanying the tower wagon.
3. In case of an arranged OHE block, one or more tower wagons can be worked and follow one another. The SM while authorizing the following tower wagons into occupied affected OHE section shall issue an “Authority to proceed without line clear” on prescribed T/A – 602 to pass the Last Stop Signal at ‘ON’ and a caution order mentioning the site of work indicating the speed which under no circumstances, shall exceed 8kmph. The first tower wagon to enter the section shall also not exceed the prescribed limit of 40kmph.
4. A tower wagon shall, however, not be permitted to enter the section following a train in absolute block signaling territory.
5. After completion of the work, the official in charge of the Tower wagon, which entered last in the section shall certify at the station in advance about the clearance of the section and initial against the relevant entry in the train signal register in token of the section having been cleared of the last Tower wagon.
6. Tower wagon have a key role in the maintenance of OHE and for attending to the break downs. As soon as the programmed and sanctioned work is completed they shall be returned to their base depot with the utmost expedition in as much the same way as an accident relief train.
