CLOSED CIRCUIT TELEVISION (CCTV) SEWER INSPECTION STANDARD

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CITY OF WELLAND CCTV SEWER INSPECTION STANDARD 2.3 SURVEY VIDEO 2.3.1 Permanent colour digital video recordings of the survey length shall be taken. The following shall apply: a) The video shall be recorded in the same sequence as the reports. b) Digital video recordings shall be in the MPEG format and recorded on CD or DVD disc media type. All video CD/DVD disc media including jewel cases shall be supplied by the Contractor and shall be new and unused prior to recording, and all cases and disks are to be clearly labelled as to their contents. c) Disks are to be “Verbatim” or “Maxell” brand or approved equivalent, and should not have stickon labels. Only permanent felt tip pen or “light scribed” labels are permitted. d) Video recordings shall be of the original subjects. e) Survey of any specific sewer length shall not be recorded on more than one (1) CD or DVD disc. f) Video CD/DVD disc identification numbers shall consist of the last two (2) digits of the Contract year and a video CD/DVD disc number consisting of three (3) digits and numbered consecutively starting from 001 (i.e. 02-001, 02-002, …) 2.3.2 The Contractor shall use a “pan and tilt camera” such that at all service connections the camera shall turn to view the inside of the connection as far as is visible. 2.3.3 The Contractor shall pan and focus the camera to provide detail of defects occurring within the pipe. 2.3.4 The Contractor shall pan and focus the camera 360º around all entering and existing manholes to view for junctions and defects. 2.4 SURVEY REPORT SUBMISSION 2.4.1 One (1) computer generated report for each sewer length surveyed in the same sequence as the video recordings shall be provided. A new survey report shall be started for each sewer length between two (2) consecutive manholes. All measurements and dimensions shall be in metric units. 2.4.2 The CCTV survey report shall include the heading, observations and defects for each sewer length surveyed based on the sewer condition reporting format detailed on Schedule ‘A-2’. 2.4.3 The Contractor shall provide a report following NASSCO standards, consisting of two main sections, a Header Section and the Condition Details Section. 2.5 SURVEY REPORT FORMAT – HEADER SECTION 2.5.1 The Header Information is to be completed in accordance with Schedule A-1. 2.5.2 It is imperative that in new sewer runs, where no official City of Welland ID# exists, that the manhole locations are to be described in as much detail as possible to facilitate result data compilation. Refer to Schedule A-1. T:\Clerical\Templates Tender Document Forms\CCTV Sewer Insp Standard Aug 2008-Revised Feb 2013.doc Page 2
CITY OF WELLAND CCTV SEWER INSPECTION STANDARD 2.5.3 The Contractor must input the correct Road Name in the Header Section. In the case of new or unassumed roads, the contractor is to be given the approved Street Names as per the development plans. These approved Street Names must be used. 2.5.4 In the case of easements or servicing corridors, the Street Name is to be listed as the name of the street immediately upstream of the servicing corridor, followed by the word “Easement”, e.g. “Deere Street Easement”. If there is more than one servicing easement on a particular street, additional information should be added after the easement name in parentheses (brackets), giving the relative location of the easement on the street. e.g. “Meadow Crescent Easement (North)”. The above nomenclature does not apply to rear-yard catchbasin leads. These pipe runs are to be labelled by the name of the street, then the acronym “RYCB”, followed by the lot number on which the pipe is located. e.g. “Autumn Crescent RYCB Lot 14”. 2.5.5 As a component of the manhole information in the Header Section, the Contractor is to input the approximate depth of the Start and Finish sewer inverts. Refer to Schedule A-1. 2.6 SURVEY REPORT FORMAT – CONDITION DETAILS SECTION 2.6.1 The Header Information is to be completed in accordance with Schedule A-2 and NASSCO Standards. 2.6.2 The City Of Welland uses NASSCO, Pipeline Assessment Certification Program Version 6.0 (PACP). 2.7 SURVEY PHOTOGRAPHS 2.7.1 For the colour photographs to be provided under the contract, the following shall apply: a) Photographs shall be clearly identified in relation to the location, sewer length, duty, survey direction, chainage, date and time when photograph was taken. b) Where observations exist at adjacent points, photographs should not be taken at intervals of less than two (2) metres unless absolutely necessary to show the second observation. c) All photographs relating to a specific survey of a sewer length shall be kept together in order of ascending chainage and included with the report. Photo numbers for each specific sewer length shall consist of three (3) digits and shall be numbered consecutively starting from 001. d) Digital colour photographs shall be of a quality comparable to colour photographs developed from film (minimum 1200 x 1600 Pixels) and shall be in JPEG format. The naming convention for a digital photo file shall consist of the prefix “SEW”, followed by the Job No and finally the Photo No (i.e. SEW-3452-001). e) Photographs shall be in colour, clear, durable, and shall be approximately 125mm x 90 mm (printed equivalent). f) All colour photographs shall be of the original subjects rather than photos taken from a video monitor. T:\Clerical\Templates Tender Document Forms\CCTV Sewer Insp Standard Aug 2008-Revised Feb 2013.doc Page 3
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CLOSED CIRCUIT TELEVISION (CCTV) SEWER INSPECTION STANDARD

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