E949 POWER SOURCES AND ALARMS ----------------------------- Rev. March 20, 2001 Kelvin Li Steve Kettell The purpose of this procedure is to assure that everyone on shift is familiar with the power sources, alarms, gate interlock, beam control, circuit breaker and switch locations in the counting house and around the detector area. (See attached Maps.) Emergency Procedure ------------------- Everyone on shift for E949 must be familiar with the E949 Emergency Response Procedure (available on the web as AGS OPM 3.23 http://www.agsrhichome.bnl.gov/AGS/Accel/SND/OPM/Ch03/03-23.PDF). Everyone on shift must also be familiar with the AGS Emergency Response Procedure AGS OPM 3.0 (http://www.agsrhichome.bnl.gov/AGS/Accel/SND/OPM/Ch03/03-00.PDF). If you feel that an emergency exists (is the counting house burning down? are there flames visible at the detector?...). You should: I. Pull the fire alarm (if BNL fire alarm is not already alarming) II. Push the E949 Crash Button III. Evacuate everyone from the area IV. If you can safely fight the fire and you are trained and comfortable doing so, you may fight the fire. V. Evacuate yourself and maintain communication with the Local Emergency Coordinator Serious condiditions that have not yet reached emergency status may include fire alarms, flamable gas alarms, or the observation of smoke or the beginnings of a fire. Any of these conditions may also be deemed an emergency or may soon become an emergency. If they have not reached emergency status, the source and status of the situation must be evaluated. I. Is the alarm real? A. For flammable gas alarms - contact CAS Watch B. For BNL fire alarm - ascertain if there is a fire in the area. C. For E949 fire alarm - ascertain if there is a fire II. If the alarm is real shut off fuel sources and power sources. III. If it becomes an emergency, follow the Emergency Response Procedure (outlined above). Power Sources: ------------- The three power transformers for the counting house are located outside and on the upstream end of the counting house: 1. Smallest unit: power for all A/C and lights, in-wall brown sockets. 2. Middle unit: downstairs experimental power, all out-of-wall orange sockets and pig-tail outlets. 3. Outside unit: upstairs experimental power, all out-of-wall orange sockets. Use on-off switch on them to shut down power if necessary. The transformer primaries are controlled by a series of TRIPS, e.g. power surges, crash button, any one of which can shut off all power to the counting house. The RESET (in a white box labelled EXP 787) is located on the EAST wall of the AGS building behind the C2D3 power supplies. Downstairs of the counting house has four circuit breaker boxes located on the upstream wall and one breaker box for the Uninterruptable Power Supply (UPS) that powers the computers on the street side wall. Upstairs has five circuit breaker boxes: two are on the wall on street side, one is on the wall on AGS side and two are on the upstream wall. In-wall brown sockets are for household use and the out-of-wall orange sockets are for use for experimental equipment. The transformer for the water chiller is located next to the chiller system outside and on the downstream end of the counting house. On-off switch is on the transformer. There are four RED crash buttons (clearly labeled), two downstairs, one upstairs and one just outside the door into AGS. Hitting anyone of them will shut off all power inside the counting house and the power of D3. Power in the pit is controlled by a circuit breaker box located on AGS building wall just inside of the beam gate. This must NOT be used on equipment that has common ground with experimental equipments. The 3 RSSC electronic racks (on downstream face of detector) and the beam counter electronic rack (on upstream face of detector) are powered by proper experimental power from downstairs circuit breaker #18-20 in breaker panel #2. The following alarm systems are installed and active: FIRE ALARMS: ----------- There are two fire alarm systems: BNL and E949: 1. BNL system: This system was installed by Plant Engineering and is monitored by AGS MCR and BNL Fire Dept. A. Activated by: (1) Smoke detectors: in ceiling of each floor, and one on top of each end of the detector. (2) Manual switch: one on top of stairway, and downstairs by exit door. one outside door into AGS. pulling any one of them will set off the alarm. B. Reset: It can be reset only by BNL Fire Department or AGS MCR. C. Action to take: If fire originates in the detector, push the "crash button" and pull the fire alarm. In addition, if fire occurs inside detector, discharge the two Halon fire extinguishers one each mounted on the legs of each end of the detector. Shut off all gas bottles, starting with ethane and isobutane. If fire occurs inside the counting house, crash "crash button", set fire alarm and use fire extinguisher, or evacuate. There is one portable Halon fire extinguisher on each floor, one near the top of the stairway and one at the exit door. There is also one just outside of the door to AGS. Also the building is equipped with water sprinklers that are activated by heat. 2. E949 system: This system was installed by E949, and was arranged to protect the electronics upstairs. This system has three alarm sources: smoke detector, temperature sensors and water mats. Some of them can be bypassed. See "CRATE POWER INTERLOCKS AND BY-PASS". A. Activated by: (1) Smoke detector: one on top of each active rack and three on ceiling. (2) Temp sensor: two on each radiator in water-cooled rack, intended to check cooling fan failure and high water and/or ambient temperature. (3) Water mat: one in bottom of each water-cooled rack, plus three along main water manifold under the floor. Indicator LED for each rack and the fire alarm control system are located downstairs and the power supplies and the switch panels are located in rack L19. LED for the individual temp sensor and their resets are located on the top of each rack. The lighted LED shows the location of the sensor that activated the alarm. The flickering smoke detector LED indicates that the smoke detector is functioning normally. B. Reset: To silence the alarm and reset, follow the procedure on the control box door. LED and alarm can be reset only by correcting the fault and reset at the rack. C. Action to take: (1) Smoke detector: turn off all power, use the Halon extinguisher if necessary. Pull fire alarm in the BNL system to notify MCR and the fire house. (2) Temp sensor: High power CAMAC and FB crates are interlocked with these sensors. Crate power will be tripped. Check LED on top of rack to locate faulty unit. If more than one of these sensors activated simultaneously, chances are due to high water or ambient temperature. Check water cooler and/or A/C units. Note also the powering on/off on some crate could activate these sensors. (3) Water mat: If water leak is detected, turn off rack power. Shut off water to the rack by closing the valves under the floor directly in front of the rack. Locate and repair leak. If leak is in main manifold under floor, shut down the water cooler and the water pump. Power down TD, FERA, TDC, CAMAC, TRIGGER in that order. Water mat alarm is sometimes caused by condensation on the water cooled pipes or dirts on the mat. For condensation, raise water cooler temperature setting or lower room A/C setting. Keep all doors and windows properly closed. CHAMBER HV TRIP ALARM: --------------------- UTC, RSSC and BWPC systems HV trips are monitored by one alarm NIM module next to the UTC HV PS. Locate the HV module that tripped, reset. Turn HV down and then back on and up. COUNTER HV (LECROY 1440) ALARM: ------------------------------- The "STATUS" signals of each of the 9 HV crates are connected to individual alarm inputs on same NIM module next to the UTC HV PS. Alarm will sound if the crate AC power trips, or the unit rolls back on HV. Stop data taking and rectify fault. MAGNET D3 ALARMS: ----------------- 1. Power Trip Alarm: One on each floor. Alarms when D3 power makes a transition from on to off, or off to on. Reset on alarm panel downstairs. Even though this alarm can be bypassed, it is not recommended under normal running condition. 2. Temperature Alarm: This alarm can be set by one of the following: a. Magnet water temperature out of range (55-110 deg F) for the whole magnet or for a single coil, b. Magnet interior temperature out of range (55-85 deg F), c. RSSC water temperature out of range (50+/-2 deg F). These temperatures are measured by the THERMOCOUPLE THERMOMETER unit above the DIBBUK beam control console. Alarm can be silenced by pressing "^"(PAPER) button. But the CHANNEL ALARM STATUS indicator remains until fault is corrected. Channels are ch#1,2: magnet outlet and inlet water temperature respectively. ch#3: magnet interior temperature, ch#4: RSSC methylal temperature, ch#5-40: individual magnet coil water outlet temperature. To read a desired channel: enter channel# in 2 digits, then press "^""HOLD" buttons. A "beep" indicates entry is accepted. Be sure to do "^" "HOLD" to re-initiate the scanning. 3. Coil Short Alarm: This alarm is located on top of the rack next to the DIBBUK beam control console. Alarm sets if there is electrical short in coils. This alarm will trip off magnet power, and so will set the Power Trip Alarm as well. Don't power up D3 until MCR checks this out. This alarm which is under test is presently bypassed. As such, if alarms, turn off D3 power using the beam control and notify AGS MCR. GAS ALARMS: ---------- 1. There are two gas alarm systems: one is located outside on top of the gas bottles, the other is located next to the DIBBUK beam control with the sensor located inside the pit on the upstream end. Check both system are powered. In case of alarm, notify CAS Watch (target desk, x2024). If flammable gas has leaked, I. Turn off detector HV (Demon, CsI, UTC, BWPC, RSSC) II. Turn off preamps at pit (RSSC electronics, UTC preamps) III. Check for gas leak around the gas system. IV. Locate and rectify the leak. V. Reset system on control panel. 2. There are also alarms on the flow rates of the RSSC mass flow meters. They use same alarm module as for the LeCroy HV. But this alarm has not yet made to work. WATER COOLER SYSTEM ALARMS: --------------------------- 1. Water Temperature Alarm: IN and OUT cooling water and ambient temperature upstairs are dis- played downstairs. Alarm is set for ~66 & 70 deg. F on the IN and OUT water temperature respectively. Alarm control is on the panel. Check the water pump and the compressor in chiller. Notify AGS MCR to call the A/C Group for help. Consider power down electronics if the temperature continues to rise. 2. Water Pressure Alarm: Alarms on incoming water pressure if it is <15psi. Check water pump in chiller system. Switch to the 2nd pump if necessary, otherwise, power down water cooled electronics. Ask AGS MCR to call A/C group for help. AGS WATER MAT ALARM: ------------------- This alarm is located in the rack next to the DIBBUK beam control console. Alarm is set if water in pit (a sump pump is located in downstream end of pit) or water leak in nearby water manifolds (sometimes from AGS building leaks when it rains). Call AGS MCR if water leak is detected. Power down D3 if leak is from D3 and shut off valves on the main water pipes upstream of pit starting with the SUPPLY line and then the RETURN line. Reset on panel. RADIATION ALARM; --------------- A radiation counter is located at the exit of D2 magnet. If beam intensity is higher than the set limit, D2 will be tripped off. An alarm (indicator light) is set in the alarm box located on the AGS wall next to the counting house. Push the reset button on the "C4 Secondary Beam Security System" panel on the north wall outside the counting house in order to re-enable the beam. PIT GATE INTERLOCK; ------------------ When the key for the gate to the detector pit is taken out of the interlock control panel inside the counting house and if the beam is on, D2 will be tripped to stop the beam. HP has to be called to sweep the pit area, lock the gate and reset the gate interlock. The key has to be re-inserted into the interlock control panel inside the counting house before the beam can be turned back on. CRATE POWER INTERLOCK AND BY-PASS May 14, l991 --------------------------------- The "high power" electronic crates have AC power interlocked with temp- erature sensors. These include all the Fastbus crates, all FERA ADC CAMAC crates and the CAMAC crates with discriminators. These crates are cooled by chilled water flowing through radiators which necessitates the need of water mat alarm. Other water cooled racks (like the trigger racks) have no radiators and so have no temp sensors. There are two temp sensors on each radiator. The control circuit board is located near the top in the back of the rack. The power supplies are located in rack L19. TEMP SENSOR ALARM: ----------------- When a temp sensor alarms, it turns off the AC power to the power supplies in that crate. It will stay off until reset (reset button on top panel in front of rack). It resets only after the alarm has been cleared, i.e. when temperature is back to normal. The alarm signal passes through the temp sense enable-disable panel in rack L19, and continues onto zone 2 in the smoke detector control down- stairs which set the alarm bell. Reset information on the smoke detector control can be found on the door of the control box. 1. Alarm Enable-Disable Switches in Rack L19: It enables or disables the alarm signal to the smoke detector control. It is used when the control circuit is being worked on, or to stop the alarm from a faulty sensor. There are two levels of enable-disable: one for individual rack, the other for the whole system. Disabling all or just the rack that alarmed will enable the reset of the smoke detector control. It has been noticed that turning CAMAC power on or off could set off a faulty temp sense alarm. (Especially if a CAMAC crate is turned on/off by the front panel switch. It is better to turn the Circuit Breaker on/off for the CAMAC crates; or disable the system before turning the power on-off, and enable after it is done.) All should be enabled in normal running. 2. AC Power By-Pass: In the event of system malfunction that shuts off power to crate, a manual by-pass arrangement is provided. For Fastbus, it is in the form of two position switch mounted on top of the crate power supply panel in the back of the rack, one switch for each power supply. The normal interlock position is to the right, marked N, the by-pass to the left, marked B.P. For CAMAC crates, by-pass is done in one of two ways (for historical reasons). When the power to the control circuit is on, use the toggle switch located on the lower right corner of the control board. The top one of this column of 4 switches is for crate 1, etc. Normal position is up, by-pass is down. When the power to the control circuit is off, replace the relay located below the control board with a jumper plug to by-pass. The jumper plugs can be found on top of nearby CAMAC power supply. All should be in interlock position in normal running. WATER MAT ENABLE-DISABLE: ------------------------ The water mat alarms are usually set by water from leaks from plumbing or from condensation. This is routed through the enable-disable panel in rack L19 to zone 3 in the smoke detector control downstairs. Individual mat or the total system can be disable from this panel to enable reset on the smoke detector control while repair work is being done. All should be set in enable positions in normal running. E949 Fire Alarm RESET PROCEDURES A. System Alarms: 1. NOTE LED ON PANELS ABOVE: source of alarm. 2. NOTE ZONE LED ON BOX, OPEN DOOR. 3. PUSH DOWN SWITCH UNDER ZONE: silent bells; zone RED LED remains on; sets zone YELLOW LED & son-alert. 4. PUSH DOWN "TROUBLE" SWITCH: silent son-alert. 5. RECTIFY SOURCE OF ALARM: LED on panels above off. 6. "RESET" SYSTEM. 7. PUSH UP SWITCH UNDER ZONE: re-energize bell. 8. PUSH UP "TROUBLE" SWITCH: silent son-alert; YELLOW LED off. B. System Troubles: 1. NOTE ZONE YELLOW LED ON BOX, OPEN DOOR. 2. PUSH DOWN "TROUBLE" SWITCH: silent son-alert; YELLOW LED remains on. 3. RECTIFY SOURCE OF TROUBLE: will re-sound son-alert. 4. PUSH UP "TROUBLE" SWITCH: silent son-alert; YELLOW LED off. Note: If operation should get out of sequence, the system cannot be reset. In that case, cut off all power to system by unplugging both the battery and AC line momentarily. This will reset system if source of alarm has been rectified. In case of emergency, call: Artie Mango X3783 924-5982 Henry Diaz X3413 399-6947 E949 SHIFT CHECK LIST Rev. March 20, 2001 --------------------- Items to be checked at least once/shift: SYSTEM | ITEMS | READINGS | COMMENTS ------------------------------------------------------------------------------- Water Cooler| Water Temp. | | readout next to fire alarm box. for upstairs| In | 55+/-3 deg F | If >66, alarms; call MC for A/C | | (may change | help; | | depending on | If >80 and rising, consider power | | humidity) | down TD,FERA,TDC,CAMAC,TRIG, in | | | that order. | Out | 64+/-3 deg F | alarms at >70, see comments above | Water Pres. at | | | chiller: | | | supply | ~30psi | If <15, switch to 2nd pump,and if | return | ~0 | still not up to normal, look for | | | leaks and watch temp. increase, | | | consider power down electronics. ------------------------------------------------------------------------------- Room Air | Therm. set | at "Cool" | all units should be cooling, esp. Conditioners| Fan set | at "On" | upstairs (for humidity), setting (2 downstair| | | should be just below reading. 3 upstairs) | | | digital thermostats are set at 69 | Temp. Read | within few | If 10 deg above setting, call MC | | deg of set. | for A/C help. ------------------------------------------------------------------------------- Magnet D3 | Channel# | alarms if > | Readout unit prints once/2 hr. thermocouple| 1 | 120 deg F | D3 return water temp. readout | 2 | 90 deg F | D3 supply water temp. | 3 | 95 deg F | BV support temp. (inside det.) | 4 | 95 deg F | same as ch 3 above | 5-40 | 120 deg F | D3 coil water temp., if >120, | | | call MC; if continues rising, | | | consider lowering field or shut | | | down D3. ------------------------------------------------------------------------------- Chamber HV | BMWC 2 | volt | If in doubt, check with local | PS U | 2750 | labels. | V | 2750 | | T | 2750 | | BMWC 1 | | | PS U2 | 3300 | | U1 | 3300 | | X | 3300 | | UTC | | | PS 1-1 | 1854 | | 1-2 | 1927 | | 2-1 | 1946 | | 1-3 | 1946 | | 2-2,2-3| 1975 | | 2-4 | 1974 | | 3-1 | 1958 | | 3-2,3-3| 1993 | | 3-4 | 2043 | | 1-4L | 1950 | | 1-4R | 1950 | | RSSC | | | PS 1 | 3450 | | . | . | | . | . | | 12 | . | | 13 | 3300 | | 14 | 3400 | | 15 | 3452 | ------------------------------------------------------------------------------- D3 |Water Pres. | | gauges on water manifold at D3. | supply | 190+/-10psi | Notify MC if out of range. | return | 40+/-10psi | ------------------------------------------------------------------------------- Gas Systems | | | RSSC |Ar: 2 D/S cyl. | | | pres. | 17psi | | flow | 100cc/m | ch 1 of mass flow-meter |Isobutane: | | | pres. | 11psi | Amount of liquid left= | | | (scale readings-100)lb., or use | | | heat gun to locate level which | | | is marked on bottle. | | | Heating strap is warm to touch. | | | If very cold setting has to be | | | raised - watch for liquefication | | | in lines from read-out to mixing | | | panel. | flow | 300cc/m | ch 2 of mass flow-meter |Water chiller: | | | Temp. | 9.6 deg C | set-point knob next to readout |Output bubblers:| | check all are bubbling | | | check all 4 flow-meters according | | | to marks Beam Ch. |CF4: | | run with CF4 recycler | pressure | 10psi | | flow | 10-20cc/m | ch.3 in mass flow-meter,real flow | | | is reading+5cc/m |Isobutane: | | See isobutane on RSSC above. | pressure | 11psi | | flow | 2.5-5cc/m | Ch 5 in mass flow-meter. | | | CF4/Iso=4 |CF4 recycler: | | circular knob: control mixing, | | | square button: gas flow to | | | chamber on/off, | | | pump on-off: bypass recycler | | | flow meter knob: total flow. UTC |Ar: | | | U/S 2 cyl. | 14psi | | flow | 100cc/m | ch. 1 in mass flow-meter |Ethane: | | Amount of liquid left= | 2 cyl. | 12psi | (scale reading-100)lb | flow | 100cc/m | ch. 2 in mass flow-meter |N2: | | cyl. next to CF4 | pres. | 10.5psi | used in between super layers |Ethyl Alcohol: | | use 2 reservoirs on left. | res. level | | Check with local marks. | bub. level | | above local RED mark readout | water bath | | on right side of wood box, | temperature| | set at 0degC, controls cooling. |Pres. controller| | 5 pairs glass tubes, short tube | | | of each pair must bubble, adjust | | | rotometer below if not ------------------------------------------------------------------------------- LN |PRESS. GAUGE | 10+/-2psi | LN tank outside of roll-up door. | | | open V2 to increase pres. | | | auto vent valve on V3 set at | | | about 15psi. take off auto vent | | | valve, open V3 to decrease pres. |Water bath | 72 deg | next to roll-up door, setting | | | according to ambient |Flow-meters | | | overall | | Flow controls on half-ht panel. | | | Adj. valve V1 in front of panel | | | to read ~43 on gauge G5, check | | | all 6 flow meters on top of panel | | | with marks: | DC15 | 10-15 | Meters on top of panel. | ECM | 4-6 | | ECP | 2.5-3 | | U/S endcap | 5 | | D/S endcap | 5 | | Target | 10 | ------------------------------------------------------------------------------- ALARMS: Check and make sure all alarms are enabled. These include: On rack next to DIBBUK beam console D3 coil short alarm; D3 Power-Off; AGS water-mat Detector; AGS isobutane Alarm; On rack of DIBBUK beam control: Thermocouples (do "up arrow", "list" to see if channel alarm limits are set); On rack next to UTC HV supplies: Chamber HV Alarms; PMT HV Alarms; On rack next to fire alarm control: Water in/out Temperatures; Water Pressure; Bottom of rack L19 upstairs: Temp Sensor and Water-mat alarm enables; On top of gas bottle rack: E949 Gas Alarm; It is suggested that we do a "walking tour" of the experiment at least once per shift. These include the detector area, the water chiller and both floors of the counting house. Note if any local temperature build-up which could indicate cooling problem.