ACTEW Water. Work Instruction - Treatment Valves and Piping Systems Identification

Transcription

1 1. Introduction To define the procedures necessary to identify piping systems and valves and to record in the Maintenance System. This procedure applies to all piping, and valves installed at Treatment Plants maintained by Treatment Branch. Valve service and piping system abbreviations will identify various valve services and piping systems as described below. Valves of certain sizes will be identified by numbering system described below. Valves specifically identified will be registered in the maintenance system. 2. Instructions Valve Service and Pipe System Abbreviations The various valve services and pipe system in the Treatment Plants are each identified by the two or three letter abbreviations and are given in the document Treatment Valve Service and Pipe System Abbreviations Table. Valve Numbering Power actuated valves (eg electric motor driven, hydraulic driven and valves which use solenoid valves to control the main valve e.g. a large pneumatic knife gate valve) are to be identified by Plant Equipment Numbers as per procedure Treatment Identification and Registration of Plant Assets. In the case of solenoid valves not directly associated with a single equipment item or are common to multiple equipment items then the valve will be identified by one of two numbering systems. The solenoid valve may be allocated a Plant Equipment Number. Alternatively, due to existing similar solenoids within the same process system at LMWQCC or GWTP the solenoid valve may be identified as per the original valve numbering system to maintain continuity with other solenoid valves. The original valve numbering system is detailed below. In the case of solenoid valves which are directly associated with one equipment item and located at that equipment item then they will be generally identified as a Unit Location of that main Plant Equipment Number. In some circumstances manually operated valves may be identified by a Plant Equipment Number. This may be due to requirements such as future maintenance planning or identification issues. The final method used for identifying valves will be determined by the Maintenance Planning and Strategy Group. All other valves larger than 26 mm diameter will have valve numbers. Valve numbers consist of a single digit identifying the structure, a two or three letter service abbreviation and a two digit number sequential for each structure and service. This number uniquely identifies each item of valve by its location and service. Treatment Equipment/Instrument Loop Codes shows the structure numbers Treatment Valve Service and Pipe System Abbreviations Table shows the valve service abbreviations For example, abbreviation 2 C E 1 9 Sequential number Valve service Structure number Authorised by: Manager Treatment Page 1 of 6

2 1.2.1 Pipe Identification Pipes are identified in work executed drawings by coding consist of digits identifying the nominal diameter of the pipe followed by the pipe system abbreviation Treatment Valve Service and Pipe System Abbreviations Table shows the pipe system abbreviations For example, of the pipe Labeling 250 RW Pipe system abbreviation Nominal diameter Valve Labels Every item of valve identified specifically by the numbering system must be labelled to ensure correct identification. The label shall be permanently fixed adjacent to the valve, be clearly legible and durable. Valve labels must show the following details in accordance with Figure 1; and be sized appropriately with lettering as indicated in the figure. As a minimum requirement the lettering shall be 8mm in high. Valve Number 2CE19 Pipe Identification Marking Figure 1 - Valve Label Pipes installation to be marked in accordance with Australian Standards AS1345 Identification of the contents of pipes, conduits and as specified by approved representative of the Manager Treatment. Registration of Valve Numbers Prior to the installation of any valves Assign the valve numbers in accordance with Section 1.2 above and maintain register electronically During Installation Ensure the valves are labelled in accordance with Section 1.3 Authorised by: Manager Treatment Page 2 of 6

3 2 Tables Sewage Treatment Abbreviation Valve Service and Pipe System AA Aeration air AI Inert ash AL Lime ash BA Filter backwash air BW Filter backwash water CA Channel aeration air CD Carbon dioxide CE Centrate CI Citric acid CG Chlorine gas CL Chlorine liquid CO Centrate tank overflow CS Chlorine solution CSC Centrate scum CT Caustic soda (sodium hydroxide) CV Chlorine gas -vacuum CWR Chilled water return CWS Chilled water supply DMW Domestic water DW Deionised water FA Foul air exhaust FD Floor drain FE Flocculant FL Fresh lime FOR Fuel oil return FOS Fuel oil supply FW Filtered water GO Grit dewaterer overflow GR Grit HP Hydrogen Peroxide HR Heat reservoir HTA Compressed air high temp HWR Domestic hot water return HWS Domestic hot water supply IA Compressed air - instrument LD Lime delivery LO Lube oil LS Lime sludge LW Land scape irrigation water Authorised by: Manager Treatment Page 3 of 6

4 ME MED MLR NS NT NU NW NWS PA PD PE PG PHW PS PSC PW RAS RL RS RSW RWL SA SCO SD SDG SDL SE SG SH SL SSC ST STD SWR SWS SWW TD TO TS TW VE WB WS Methanol solution Diluted Methanol Mixed liquor return Return nitrified sludge Nitrogen Nutrient water Nonpotable water Nonpotable water spray Pre-aeration air Pumped drainage Polyelectrolyte Propane gas Process hot water Process sample Primary scum Potable water Return activated sludge Reclaimed lime Recirculated sludge Raw sewage Rainwater leader Compressed air service Scum thickener overflow Sanitary drain Sulphur dioxide gas Sulphur dioxide liquid Secondary treated effluent Screenings Sodium hypochlorite Sieve liquid discharge Secondary scum Storm water Storm drain Scrubber water return Scrubber water supply Settled wastewater Tank drainage Tank overflow Thickened scum Treated water Vent Waste backwash water Waste nitrified sludge/waste activated sludge Authorised by: Manager Treatment Page 4 of 6

5 Water Treatment Abbreviation AA AB AD AL AW BA CAS CC CD CDS CDV CE CG CL CS CV DR ED FD FE FL FO FSW FW FWW HP HR HW LA LD LS LW MW PAC PC PN PP PCS Valve Service and Pipe System Auxiliary acid Auxiliary base Auxiliary dry chemical solution Aluminium sulphate Auxiliary chemical Backwash air Coagulant Aid solution Condenser cooling water Carbon dioxide Carbon dioxide solution Carbon dioxide gas-vacuum Clarifier Effluent Chlorine gas Chlorine liquid Chlorine solution Chlorine gas-vacuum Drainage Effluent drain Floor drain Iron salt Fluoride solution Fuel oil Fire service water Filtered water Filtered Waste Water Hydrogen Peroxide Heat reservoir Hot water Lime air Lime delivery Lime solution Landscape irrigation water Motor cooling water PAC Cationic polymer Non-ionic polymer Polymer Powder Primary coagulant solution Authorised by: Manager Treatment Page 5 of 6

6 PPP PPS PS PW RW RX SL SA SD SSD STD TD TO TS TU TW VA VE WW WWW UW Potassium Permanganate powder Potassium Permanganate solution Polymer Solution or (Process sample) Potable Water Raw water Reclaimed washwater Sludge Compressed air - service Sanitary drainage Sub soil drain Storm drain Tank drainage Tank overflow Supernatant Thickener Sludge or Thickener Underflow Treated water Vacuum air Vent Wash water Waste washwater Utility water RESPONSIBILITY / AUTHORITY The Maintenance Planning and Strategy Group is responsible for: assigning the valve numbers update/maintenance of the Valve register The appropriate Project Managers or Works Coordinator is responsible for the installation of all identification labels. Authorised by: Manager Treatment Page 6 of 6